Interior train components having low smoke and low heat release, and methods of their manufacture

1. A railway component,

wherein the component is a molded or extruded train seat component, comprising a thermoplastic composition comprising, based on the total weight of the composition:

3.5 to up to 12 wt. % of an organophosphorus compound;

88 to up to 96.5 wt. % of a first polymer, or a second polymer, or a combination comprising at least one of the foregoing polymers; and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing,

wherein the first polymer comprises:

2 to 20 mol % of bisphenol-A carbonate units of the formula

greater than 60 to 98 mol % of isophthalic acid-terephthalic acid-resorcinol ester units of the formula

and

optionally, 1 to 20 mol % resorcinol carbonate units of the formula

isophthalic acid-terephthalic acid-bisphenol-A ester units of the formula

or a combination comprising at least one of the foregoing;

the second polymer comprises

1 to 20 mol % of bisphenol A carbonate units of the formula

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units of the formula

and

siloxane units in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the second polymer,

wherein the siloxane units are of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 90;

wherein the aromatic organophosphorus compound is of the formula

wherein

each of R 16 , R 17 , R 18 and R 19 is phenyl, and

X is of the formula

each n is 1, and

q is from 1 to 5; and

wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs, and wherein the thermoplastic composition is free of a polyetherimide.

2. The railway component of claim 1 , wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

3. The railway component of claim 1 , wherein the component is extruded or injection molded, and the component has a transmission of 85% or more and a haze of 3% or less, measured according to ASTM D1003 using the color space CIE1931 (Illuminant C and a 2° observer) at a thickness of 3 mm.

4. The railway component of claim 1 , wherein the component is injection molded, and the thermoplastic composition has a melt volume rate of greater than 7 cc/10 min measured at 300° C. under 1.2 kg force measured according to ISO 1133.

5. The railway component of claim 1 , wherein the component is extruded, and the thermoplastic composition has a Vicat B120 of less than 130° C. measured according to ISO 306.

6. The railway component of claim 1 , wherein the first polymer comprises units of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60.

7. The railway component of claim 1 , wherein E has an average value of 2 to 50.

8. The railway component of claim 1 , wherein the organophosphorus compound is bisphenol A bis(diphenyl phosphate), resorcinol bis(diphenyl phosphate), a phenol/bi-phenol polyphosphate, or a combination comprising at least one of the foregoing.

9. The railway component of claim 1 , wherein the organophosphorus compound is effective to provide phosphorus in an amount of 0.1% to 1.0% of phosphorus, based on the weight of the thermoplastic composition.

10. The railway component of claim 1 , wherein no or substantially no flame retarding brominated compounds, flame retardant salts, or a combination comprising at least one of the foregoing are present in the thermoplastic composition.

11. The railway component of claim 1 , wherein the thermoplastic composition further comprises 0.05 to 10.0 wt. % of a light diffuser additive comprising silicone, polymethylsilsesquioxane, crosslinked poly(methyl methacrylate), methyl methacrylate/ethyleneglycol dimethacrylate copolymer, TiO 2 , or a combination comprising at least one of the foregoing, based on the total weight of the polymers in the thermoplastic composition.

12. The railway component of claim 1 , wherein the thermoplastic composition further comprises 0.00002 to 5.0 wt. % of one or more colorants based on the total weight of the polymers in the thermoplastic composition.

13. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a combination comprising, based on the weight of the combination,

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) comprising,

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 50, wherein the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

14. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a combination comprising, based on the weight of the combination,

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) comprising,

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and siloxane units of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing,

wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

15. The railway component of claim 1 , wherein the thermoplastic composition comprises based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

16. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 12 wt. % of bisphenol A bis(diphenyl phosphate);

88 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

17. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 12 wt. % of bisphenol A bis(diphenyl phosphate);

88 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

18. A railway component, wherein the component is an extruded or molded interior train cladding comprising a thermoplastic composition comprising, based on the total weight of the composition:

3.5 to up to 12 wt. % of an organophosphorus compound;

88 to up to 96.5 wt. % of a first polymer, or a second polymer, or a combination comprising at least one of the foregoing polymers; and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein

the first polymer comprises:

2 to 20 mol % of bisphenol-A carbonate units of the formula

greater than 60 to 98 mol % of isophthalic acid-terephthalic acid-resorcinol ester units of the formula

and

optionally, 1 to 20 mol % resorcinol carbonate units of the formula

isophthalic acid-terephthalic acid-bisphenol-A ester units of the formula

or a combination comprising at least one of the foregoing;

the second polymer comprises

1 to 20 mol % of bisphenol A carbonate units of the formula

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units of the formula

and

siloxane units in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the second polymer,

wherein the siloxane units are of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 90;

wherein the aromatic organophosphorus compound is of the formula

wherein

each of R 16 , R 17 , R 18 and R 19 is phenyl, and

X is of the formula

each n is 1, and

q is from 1 to 5; and

wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 ,

a critical heat flux at extinguishment (CFE) of equal to or greater than 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs, and wherein the thermoplastic composition is free of a polyetherimide.

19. The railway component of claim 18 , wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 , and

a maximum average heat release (MAHRE) of equal to or less than 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 .

20. The railway component of claim 18 , wherein the component is extruded or injection molded, and the component has a transmission of 85% or more and a haze of 3% or less, measured according to ASTM D1003 using the color space CIE1931 (Illuminant C and a 2° observer) at a thickness of 3 mm.

21. The railway component of claim 18 , wherein the component is injection molded, and the thermoplastic composition has a melt volume rate of greater than 7 cc/10 min measured at 300° C. under 1.2 kg force measured according to ISO 1133.

22. The railway component of claim 18 , wherein the component is extruded, and the thermoplastic composition has a Vicat B120 of less than 130° C. measured according to ISO 306.

23. The railway component of claim 18 , wherein the first polymer comprises units of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60.

24. The railway component of claim 18 , wherein E has an average value of 2 to 50.

25. The railway component of claim 18 , wherein the organophosphorus compound is bisphenol A bis(diphenyl phosphate), resorcinol bis(diphenyl phosphate), a phenol/bi-phenol polyphosphate, or a combination comprising at least one of the foregoing.

26. The railway component of claim 18 , wherein the organophosphorus compound is effective to provide phosphorus in an amount of 0.1% to 1.0% of phosphorus, based on the weight of the composition.

27. The railway component of claim 18 , wherein no or substantially no flame retarding brominated compounds, flame retardant salts, or a combination comprising at least one of the foregoing are present in the thermoplastic composition.

28. The railway component of claim 18 , wherein the thermoplastic composition further comprises 0.05 to 5.0 wt. % of a light diffuser additive comprising silicone, polymethylsilsesquioxane, crosslinked poly(methyl methacrylate), methyl methacrylate/ethyleneglycol dimethacrylate copolymer, TiO 2 , or a combination comprising at least one of the foregoing based on the total weight of the polymers in the thermoplastic composition.

29. The railway component of claim 18 , wherein the thermoplastic composition further comprises 0.00002 to 5.0 wt. % of one or more colorants based on the total weight of the polymers in the thermoplastic composition.

30. The railway component of claim 18 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a combination comprising, based on the weight of the combination,

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) comprising,

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 50, wherein the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, foregoing,

wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 ,

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 80% to 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

31. The railway component of claim 18 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a combination comprising, based on the weight of the combination,

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) comprising,

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and siloxane units of the formula

or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing,

wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

32. The railway component of claim 18 , wherein the thermoplastic composition comprises based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

33. The railway component of claim 18 , wherein the thermoplastic composition comprises based on the total weight of the composition,

3.5 to 10 wt. % of bisphenol A bis(diphenyl phosphate);

90 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60; and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

34. The railway component of claim 18 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 12 wt. % of bisphenol A bis(diphenyl phosphate);

88 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

35. The railway component of claim 18 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 12 wt. % of bisphenol A bis(diphenyl phosphate);

88 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 150 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 60 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a critical heat flux at extinguishment (CFE) of higher than or equal to 20 kW/m 2 measured in accordance with ISO 5658-2 on a 3 mm thick plaque, and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

36. The railway component of claim 18 , wherein the cladding is an interior vertical surface selected from room dividers, flaps, boxes, hoods and louvres; an interior door or lining for internal and external doors; a window insulation; a kitchen interior surface; an interior horizontal surface selected from ceiling paneling, flaps, boxes, hoods and louvres; a luggage storage area selected from overhead and vertical luggage racks, luggage containers and compartments; a driver's desk application selected from paneling and surfaces of driver's desk; an interior surface of gangways selected from interior sides of gangway membranes (bellows) and interior linings; a window frame; an optionally folding table with downward facing surface; an interior or exterior surface of air ducts, or a device for passenger information.

37. The railway component of claim 36 , wherein the cladding is a side wall, a front wall, an end-wall, a partition, a room divider, an interior door, a window insulation, a lining, a kitchen interior surface, a ceiling panel, an overhead or vertical luggage rack, a luggage container, a luggage compartment, a window frame, an optionally folding table with downward facing surface, or an information display screen.

38. The railway component of claim 18 , wherein the component is a partition, a room divider, an interior door or lining for internal and external doors, a window insulation, an overhead and vertical luggage rack, a luggage container and compartment, a window frame; an optionally folding table with downward facing surface; or a device for passenger information; and wherein the component has a transmission of 85% or more and a haze of 3% or less, measured according to ASTM D1003 using the color space CIE1931 (Illuminant C and a 2° observer) at a thickness of 3 mm.

39. The railway component of claim 18 , wherein the component is a partition, a room divider, an interior door or lining for internal and external doors, a window insulation, an overhead and vertical luggage rack, a luggage container and compartment, a window frame, an optionally folding table with downward facing surface, or a device for passenger information; and wherein the thermoplastic composition comprises a light diffuser additive comprising silicone, polymethylsilsesquioxane, crosslinked poly(methyl methacrylate), methyl methacrylate/ethyleneglycol dimethacrylate copolymer, TiO 2 , or a combination comprising at least one of the foregoing.

40. A railway component, wherein the component is a molded or extruded component comprising a thermoplastic composition comprising, based on the total weight of the composition,

3.5 to 12 wt. % of bisphenol A bis(diphenyl phosphate);

88 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing,

wherein a sample of the thermoplastic composition has:

a smoke density after 1.5 min (Ds1.5) of less than or equal to 100 measured according to ASTM E662-12 in flaming and in non-flaming mode on a 3 mm thick plaque,

smoke density after 4 min (Ds4) of less than or equal to 200 measured according to ASTM E662-12 in flaming and non-flaming mode on a 3 mm thick plaque, and

a maximum flame spread index (Is) of 35 and less, without flaming running or dripping measured according to ASTM E162-12a on a 3 mm thick plaque, and wherein the thermoplastic composition is free of a polyetherimide.

41. The railway component of claim 1 , wherein the thermoplastic composition comprises based on the total weight of the composition,

3.5 to 10 wt. % of an aromatic organophosphorus compound of the formula

wherein each of R 16 , R 17 , R 18 , and R 19 is phenyl,

X is of the formula

each n is 1, and

q is 1-5; and

90 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60; and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

42. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of an aromatic organophosphorus compound of the formula

wherein each of R 16 , R 17 , R 18 , and R 19 is phenyl,

X is of the formula

each n is 1, and

q is 1-5; and

90 to 96.5 wt. % of a combination comprising, based on the weight of the combination,

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester) of the formula

wherein m is 4 to 100, and the mole ratio of x:m is 2:98 to less than 40:60, and

20 to 80 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinol ester)-co-poly(siloxane) comprising,

1 to 20 mol % of bisphenol A carbonate units,

greater than 60 to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 2 to 50, wherein the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of equal to or less than 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of equal to or less than 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of equal to or less than 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.

43. The railway component of claim 1 , wherein the thermoplastic composition comprises, based on the total weight of the composition,

3.5 to 10 wt. % of an aromatic organophosphorus compound of the formula

wherein each of R 16 , R 17 , R 18 , and R 19 is phenyl,

X is of the formula

each n is 1, and

90 to 96.5 wt. % of a poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane) which comprises

1 to 20 mol % of bisphenol A carbonate units,

greater than 60% to 90 mol % of isophthalic acid-terephthalic acid-resorcinol units, and

siloxane units of the formula

wherein E has an average value of 5 to 50, and the siloxane units are present in an amount effective to provide 0.1 to 10 wt. % of siloxane units, based on the weight of the poly(bisphenol-A carbonate)-co-poly(isophthalate-terephthalate-resorcinolester)-co-poly(siloxane); and

optionally, up to 5 wt. % of an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing, wherein a sample of the thermoplastic composition has:

a smoke density after 4 minutes (Ds-4) of less than or equal to 300 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

an integral of the smoke density as a function of time up to 4 minutes (VOF4) of less than or equal to 600 measured in accordance with ISO 5659-2 on a 3 mm thick plaque at 50 kW/m 2 ,

a maximum average heat release (MAHRE) of less than or equal to 90 kW/m 2 measured in accordance with ISO 5660-1 on a 3 mm thick plaque at 50 kW/m 2 , and

a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs.