Poly(etherimide-siloxane)/poly(phthalamide) compositions, articles prepared therefrom, and methods for the manufacture thereof

1. A thermoplastic composition, comprising

40 to 60 wt % of a poly(phthalamide);

40 to 60 wt % of a poly(etherimide-siloxane); and

greater than 0 to 10 wt % of an additive composition,

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

2. The thermoplastic composition of claim 1 , wherein the poly(phthalamide) comprises repeating units of the formula

wherein Q 2 is independently at each occurrence a substituted or unsubstituted C 4-14 alkylene group.

3. The thermoplastic composition of claim 1 , wherein Q 2 is derived from an aliphatic diamine.

4. The thermoplastic composition of claim 3 , wherein the aliphatic diamine is a linear C 4-14 aliphatic diamine, a branched C 4-14 aliphatic diamine, a C 4-14 alicyclic diamine, or combination comprising at least one of the foregoing; and

the linear C 4-14 aliphatic diamine comprises 1,4-butanediamine, 1,6-hexamethylenediamine, 1,8-octamethylenediamine, 1,9-nonamethylenediamine, 1,10-decanediamine, 1,11-undecanediamine, 1,12-dodecanediamine, or a combination comprising at least one of the foregoing;

the branched aliphatic diamine comprises 2-methyl-1,5-pentamethylenediamine, 3-methyl-1,5-pentamethylenediamine, 2,4-dimethyl-1,6-hexamethylenediamine, 2,2,4-trimethyl-1,6-hexamethylenediamine, 2,4,4-trimethyl-1,6-hexamethylenediamine, 2-methyl-1,8-octamethylenediamine, 5-methyl-1,9-nonamethylenediamine, or a combination comprising at least one of the foregoing; and

the alicyclic diamine comprises cyclohexanediamine, 4, 4′-diamino dicyclohexyl methane, or a combination comprising at least one of the foregoing.

5. The thermoplastic composition of claim 1 , wherein the poly(etherimide-siloxane) comprises units of the formula

wherein

each R is a substituted or unsubstituted C 6-20 aromatic hydrocarbon group, a substituted or unsubstituted, straight or branched chain C 4-20 alkylene group, a substituted or unsubstituted C 3-8 cycloalkylene group, or a combination comprising at least one of the foregoing;

each R 4 is independently a C 2 -C 20 alkylene group;

each R′ is independently a C 1-13 monovalent hydrocarbyl group;

each Z is independently an aromatic C 6-24 monocyclic or polycyclic group optionally substituted with 1 to 6 C 1-8 alkyl groups, 1-8 halogen atoms, or a combination comprising at least one of the foregoing;

E is 2 to 50; and

n is an integer from 2 to 500.

6. The thermoplastic composition of claim 5 , wherein each R is independently a divalent group of the formula

wherein Q 1 is —O—, —S—, —C(O)—, —SO 2 —, —SO—, —P(R a )(═O)— wherein R a is a C 1-8 alkyl or C 6-12 aryl, —C y H 2y — or a halogenated derivative thereof wherein y is an integer from 1 to 5, or —(C 6 H 10 ) z — wherein z is an integer from 1 to 4; and

Z is a group of the formula

wherein

R a and R b are each independently a halogen atom or a monovalent C 1-6 alkyl group,

p and q are each independently integers of 0 to 4,

c is 0 to 4, and

X a is a single bond, —O—, —S—, —S(O)—, —SO 2 —, —C(O)—, or a C 1-18 organic bridging group.

7. The thermoplastic composition of claim 1 , wherein the additive composition comprises

a filler, reinforcing agent, antioxidant, heat stabilizer, light stabilizer, ultraviolet light stabilizer, ultraviolet light absorbing additive, plasticizer, lubricant, release agent, processing aid, antistatic agent, anti-fog agent, antimicrobial agent, colorant, surface effect additive, radiation stabilizer, flame retardant, anti-drip agent, hydrostabilizer, or a combination comprising at least one of the foregoing.

8. The thermoplastic composition of claim 1 , wherein the composition comprises

45 to 55 wt % of the poly(phthalamide);

45 to 55 wt % of the poly(etherimide-siloxane); and

0.1 to 5 wt % of the additive composition.

9. The thermoplastic composition of claim 1 , wherein the composition exhibits a notched Izod impact strength of greater than or equal to 95 J/m, as determined by ASTM D256 at 23° C. at a thickness of 3.2 mm.

10. The thermoplastic composition of claim 1 , wherein the composition exhibits a heat deflection temperature of greater than or equal to 100° C., as determined according to ASTM D648 using a testing stress of 0.45 MPa and a sample thickness of 3.2 mm.

11. The thermoplastic composition of claim 1 , wherein the composition exhibits a greater flame retardancy compared to the same composition without the poly(etherimide-siloxane).

12. The thermoplastic composition of claim 1 , wherein the composition comprises

45 to 55 wt % of the poly(phthalamide);

45 to 55 wt % of the poly(etherimide-siloxane); and

1 to 4 wt % of the additive composition; and

wherein

the composition exhibits a notched Izod impact strength of 125 to 350 J/m, as determined by ASTM D256 at 23° C. at a thickness of 3.2 mm; and

a heat deflection temperature of 100 to 250° C., as determined according to ASTM D648 using a testing stress of 0.45 MPa and a sample thickness of 3.2 mm.

13. The thermoplastic composition of claim 1 , wherein a poly(etherimide) other than the poly(etherimide-siloxane) is excluded from the composition.

14. An article comprising the thermoplastic composition of claim 1 .

15. The article of claim 14 , wherein the article is an injection molded article, an extruded article, or a compression molded article.

16. The article of claim 14 , wherein the article is a fiber, a film, a sheet, a pipe, a coating, or a molded part.

17. The article of claim 14 , wherein the article is a flexible article.

18. The article of claim 14 , wherein the article is a component of a consumer electronic device, a wire, a cable, a wearable electronic device, a flexible laminate, a flexible display, or a lighting component.

19. A method for the manufacture of the thermoplastic composition of claim 1 , the method comprising,

melt-mixing the components of the composition; and

optionally, extruding the composition.