Composition, method for the manufacture thereof, and articles made therefrom

1. A composition comprising:

5 to 25 weight percent of a poly(phenylene ether);

20 to 40 weight percent of a poly(alkylene terephthalate);

5 to 15 weight percent of a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene;

0.01 to 2 weight percent of a compatibilizing agent;

5 to 25 weight percent of an arc suppressant comprising a nitrogen-containing compound, a phosphorus-containing compound, or a combination thereof;

5 to 25 weight percent glass fiber;

5 to 20 weight percent of a mineral filler; and

0.1 to 5 weight percent of poly(tetrafluoroethylene);

wherein weight percent of each component is based on the total weight of the composition; and

wherein the composition comprises less than 4 weight percent of a metal di(C 1-6 alkyl)phosphinate.

2. The composition of claim 1 , wherein a circuit breaker housing molded from the composition passes a UL 489 Z-sequence test.

3. The composition of claim 1 , wherein a metal di(C 1-6 alkyl)phosphinate is excluded from the composition.

4. The composition of claim 1 , wherein the poly(alkylene terephthalate) comprises a poly((C 1-8 alkylene) terephthalate).

5. The composition of claim 1 , wherein the poly(phenylene ether) comprises poly(2,6-dimethyl-1,4-phenylene ether).

6. The composition of claim 1 , wherein the hydrogenated block copolymer comprises a styrene-(ethylene-butylene)-styrene triblock copolymer.

7. The composition of claim 1 , wherein the compatibilizing agent comprises

fumaric acid, maleic acid, maleic anhydride, citric acid, or a combination thereof;

a multifunctional polymeric or oligomeric compatibilizer;

or both.

8. The composition of claim 1 , further comprising an additive composition comprising an antioxidant, a lubricant, a thermal stabilizer, an ultraviolet light absorbing additive, a plasticizer, an anti-dripping agent, a mold release agent, an antistatic agent, a dye, a pigment, a laser marking additive, a radiation stabilizer, or a combination thereof.

9. The composition of claim 1 , wherein the composition comprises 0 to 25 weight percent of a polyamide.

10. The composition of claim 1 , wherein the arc suppressant comprises melamine polyphosphate, melamine cyanurate, or a combination thereof.

11. The composition of claim 1 , comprising

5 to 15 weight percent of the poly(phenylene ether);

25 to 35 weight percent of the poly(alkylene terephthalate);

5 to 15 weight percent a styrene-(ethylene-butylene)-styrene triblock copolymer;

0.1 to 1.5 weight percent of the compatibilizing agent;

4 to 9 weight percent of melamine polyphosphate;

4 to 9 weight percent of melamine cyanurate;

5 to 20 weight percent glass fiber;

5 to 15 weight percent talc;

7 to 25 weight percent of a polyamide;

1 to 3 weight percent polytetrafluoroethylene; and

wherein the composition excludes a metal di(C 1-6 alkyl)phosphinate.

12. The composition of claim 11 , wherein

the poly(phenylene ether) comprises poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of 0.25 to 0.35 deciliter per gram, as determined by Ubbelohde viscometer at 25° C. in chloroform;

the poly(alkylene terephthalate) comprises poly(butylene terephthalate);

the styrene-(ethylene-butylene)-styrene triblock copolymer has a polystyrene content of 20 to 35 weight percent, based on the weight of the polystyrene-poly(ethylene-butylene)-polystyrene triblock copolymer;

the compatibilizing agent comprises citric acid and a copolymer comprising repeating units derived from styrene and a glycidyl (meth)acrylate; and

the polyamide comprises polyamide-6.

13. A method for the manufacture of the composition of claim 1 , the method comprising melt blending the components of the composition.

14. An article comprising the composition of claim 1 .

15. The article of claim 14 , wherein the article is a molded circuit breaker or a molded circuit breaker housing.

16. The composition of claim 1 , wherein the mineral filler comprises talc.

17. The composition of claim 1 , wherein the poly(alkylene terephthalate) comprises a poly(ethylene terephthalate), a poly(butylene terephthalate), or a combination thereof.

18. The composition of claim 1 , wherein the compatibilizing agent comprises citric acid;

a copolymer comprising repeating units derived from styrene and a glycidyl (meth)acrylate;

or both.

19. The composition of claim 1 , wherein the arc suppressant comprises melamine polyphosphate and melamine cyanurate.

20. The composition of claim 1 , wherein the poly(phenylene ether) comprises poly(2,6-dimethyl-1,4-phenylene ether) having an intrinsic viscosity of 0.1 to 0.6 deciliter per gram, as determined by Ubbelohde viscometer at 25° C. in chloroform.