POLY(ARYLENE ETHER) BLOCK COPOLYMER COMPOSITIONS, METHODS, AND ARTICLES

Abstract

Poly(arylene ether)-polysiloxane block copolymers and methods for their preparation are provided. The block copolymers include structural units derived from a poly(arylene ether), a hydroxyaryl-terminated polysiloxane, and an activated aromatic carbonate.

Description

Claims

1. A method of preparing a poly(arylene ether)-polysiloxane block copolymer, comprising reacting a poly(arylene ether) comprising a hydroxy group, a hydroxyaryl-terminated polysiloxane, and an activated aromatic carbonate.

2. The method of claim 1, wherein said reacting comprises melt reacting.

3. The method of claim 1, wherein said reacting comprises reacting in a solvent.

4. The method of claim 1, wherein the poly(arylene ether) comprises repeating structural units having the formula

5. The method of claim 1, wherein the poly(arylene ether) comprises 2,6-dimethyl-1,4-phenylene ether units, 2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof.

6. The method of claim 1, wherein the poly(arylene ether) has an intrinsic viscosity of about 0.04 to about 0.6 deciliter per gram at 25° C. in chloroform.

7. The method of claim 1, wherein the poly(arylene ether) has, on average, about 0.5 to 1 aromatic hydroxy group per chain.

8. The method of claim 1, wherein the poly(arylene ether) has, on average, greater than 1 aromatic hydroxy group per chain.

9. The method of claim 1, wherein the hydroxyaryl-terminated polysiloxane comprises repeating units having the structure

10. The method of claim 9, wherein each occurrence of R8, R9, R10, and R11 is independently methyl or phenyl, and wherein Y is methoxy.

11. The method of claim 1, wherein the hydroxyaryl-terminated polysiloxane has the structure

12. The method of claim 1, wherein the activated aromatic carbonate is selected from the group consisting of bis(o-chlorophenyl) carbonate, bis(o-nitrophenyl) carbonate, bis(o-acetylphenyl) carbonate, bis(o-phenylketonephenyl) carbonate, bis(o-formylphenyl) carbonate, bis(methyl salicyl) carbonate, and mixtures thereof.

13. The method of claim 1, wherein the activated aromatic carbonate is bis(methyl salicyl) carbonate.

14. The method of claim 1, wherein the activated aromatic carbonate is used in an amount of about 0.5 to about 2 moles per two moles of total hydroxy groups contributed by the poly(arylene ether) and the polysiloxane.

15. The method of claim 1, wherein the weight ratio of the poly(arylene ether) to the hydroxyaryl-terminated polysiloxane is about 1:10 to about 10:1.

16. The method of claim 1, further comprising melt reacting an endcapping agent with the poly(arylene ether), the hydroxyaryl-terminated polysiloxane, and the activated aromatic carbonate.

17. The method of claim 1, wherein the poly(arylene ether)-polysiloxane block copolymer is a diblock copolymer, a triblock copolymer, a linear multiblock copolymer having more than three blocks, or a radial teleblock copolymer.

18. The method of claim 1, wherein the poly(arylene ether)-polysiloxane block copolymer is a poly(arylene ether)-polysiloxane-poly(arylene ether) triblock copolymer.

19. A poly(arylene ether)-polysiloxane block copolymer prepared by the method of claim 1.

20. A method of preparing a poly(arylene ether)-poly(alkylene ether) block copolymer, comprising melt reacting a poly(arylene ether) comprising a hydroxy group, a hydroxyaryl-terminated polysiloxane, and bis(methyl salicyl) carbonate; wherein the poly(arylene ether) has an intrinsic viscosity of about 0.04 to about 0.2 deciliters per gram at 25° C. in chloroform and comprises 2,6-dimethyl-1,4-phenylene ether units, 2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof;wherein the hydroxyaryl-terminated polysiloxane has the structure

21. A poly(arylene ether)-polysiloxane block copolymer prepared by the method of claim 20.

22. A poly(arylene ether)-polysiloxane block copolymer, comprising: a poly(arylene ether) block;a hydroxyaryl-terminated polysiloxane block; anda carbonate group linking the poly(arylene ether) block and the polysiloxane block.

23. A poly(arylene ether)-polysiloxane block copolymer, consisting of: at least one poly(arylene ether) block;at least one hydroxyaryl-terminated polysiloxane block; andat least one carbonate group linking the poly(arylene ether) block and the polysiloxane block.

24. A poly(arylene ether)-polysiloxane block copolymer, comprising: a poly(arylene ether) block having an intrinsic viscosity of about 0.04 to about 0.2 deciliters per gram at 25° C. in chloroform and comprising 2,6-dimethyl-1,4-phenylene ether units, 2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof;a hydroxyaryl-terminated polysiloxane block having a number average molecular weight of about 1,000 to about 5,000 atomic mass units, wherein the hydroxyaryl-terminated polysiloxane block has the structure

25. A poly(arylene ether)-polysiloxane block copolymer, consisting of: at least one poly(arylene ether) block having an intrinsic viscosity of about 0.04 to about 0.2 deciliters per gram at 25° C. in chloroform and comprising 2,6-dimethyl-1,4-phenylene ether units, 2,3,6-trimethyl-1,4-phenylene ether units, or a combination thereof;at least one hydroxyaryl-terminated polysiloxane block having a number average molecular weight of about 1,000 to about 8,000 atomic mass units, wherein the hydroxyaryl-terminated polysiloxane block has the structure

26. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 19.

27. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 21.

28. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 22.

29. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 23.

30. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 24.

31. An article comprising the poly(arylene ether)-polysiloxane block copolymer of claim 25.