Blends of polysiloxane/polyimide block copolymer and poly(arylene sulfide)

1. A composition comprising a compatible blend of

i) 24 to less than 84.5 weight percent of a linear poly(arylene sulfide)

ii) 14 to 75 weight percent of a polysiloxane/polyimide block copolymer; and

iii) 0.1 to less than 2.5 weight percent of a polymeric compatibilizer having an average of 2 or more epoxy groups per molecule

wherein weight percent is based on the total weight of the composition and an article made from the composition has tensile elongation greater than or equal to 60% as determined by ASTM D638 and a Notched Izod impact of greater than 50 joules per meter as determined by ASTM D256 at room temperature.

2. The composition of claim 1 , where in an article made from the composition has (1) a heat deflection temperature at 1.82 megapascals of greater than or equal to 90 degrees C. as determined by ASTM D648.

3. The composition of claim 1 , wherein the linear poly(arylene sulfide) is poly(phenylene sulfide).

4. The composition of claim 1 , wherein the polysiloxane/polyimide block copolymer comprises repeating siloxane units (d) of formula (I):

wherein R 1-6 are independently at each occurrence selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 30 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms and substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms, V is a tetravalent linker selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 50 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms and combinations comprising at least one of the foregoing linkers, g equals 1 to 30, and d is greater than or equal to 1.

5. The composition of claim 1 , wherein the polysiloxane/polyimide block copolymer has a siloxane content of 20 to 40 weight percent, based on the total weight of the block copolymer.

6. The composition of claim 1 , wherein the polymeric compatibilizer has an average of 3 to 20 epoxy groups per molecule.

7. The composition of claim 1 , wherein the polymeric compatibilizer has an average of greater than or equal to 50 epoxy groups per molecule.

8. The composition of claim 1 , wherein the polymeric compatibilizer is present in an amount of 0.1 to 3 weight percent.

9. The composition of claim 1 , wherein the linear poly(arylene sulfide) is present in an amount of 30 to 75 weight percent.

10. The composition of claim 1 , wherein the polysiloxane/polyimide block copolymer) is present in an amount of 20 to 85 weight percent.

11. The composition of claim 1 , wherein the polysiloxane/polyimide block copolymer comprises two polysiloxane/polyimide block copolymers.

12. An article comprising the composition of claim 1 .

13. A composition comprising the reaction product of melt blending

i) 24 to less than 84.5 weight percent of a linear poly(arylene sulfide);

ii) 14 to 75 weight percent of a polysiloxane/polyimide block copolymer;

iii) 0.1 to less than 2.5 weight percent of a polymeric compatibilizer having 2 or more epoxy groups per molecule wherein the composition has a tensile elongation greater than or equal to 100% as determined by ASTM D638 and weight percent is based on the total weight of the composition.

14. The composition of claim 12 , where in an article made from the composition has (1) a heat deflection temperature at 1.82 megapascals of greater than or equal to 90 degrees C. as determined by ASTM D648, and (2) a Notched Izod impact of greater than or equal to 50 joules per meter as determined by ASTM D256 at room temperature.

15. The composition of claim 13 , wherein the linear poly(arylene sulfide) is poly(phenylene sulfide).

16. The composition of claim 13 , wherein the polysiloxane/polyimide block copolymer comprises repeating siloxane units (d) of formula (I):

wherein R 1-6 are independently at each occurrence selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 30 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms and substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms, V is a tetravalent linker selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 50 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms and combinations comprising at least one of the foregoing linkers, g equals 1 to 30, and d is greater than or equal to 1.

17. The composition of claim 13 , wherein the polysiloxane/polyimide block copolymer has a siloxane content of 20 to 40 weight percent, based on the total weight of the block copolymer.

18. The composition of claim 13 , wherein the polymeric compatibilizer has an average of 3 to 20 epoxy groups per molecule.

19. The composition of claim 13 , wherein the polymeric compatibilizer has an average of greater than or equal to 50 epoxy groups per molecule.

20. The composition of claim 13 , wherein the polymeric compatibilizer is present in an amount of 0.1 to 3 weight percent.

21. The composition of claim 13 , wherein the linear poly(arylene sulfide) is present in an amount of 30 to 75 weight percent.

22. The composition of claim 13 , wherein the polysiloxane/polyimide block copolymer) is present in an amount of 20 to 85 weight percent.

23. The composition of claim 13 , wherein the polysiloxane/polyimide block copolymer comprises two polysiloxane/polyimide block copolymers.

24. The composition of claim 1 , wherein the composition contains less than 5 weight % of a branched poly(arylene sulfide).

25. The composition of claim 1 , wherein the composition does not contain any branched poly(arylene sulfide).