Claims
- 1. A method for manufacturing a thermoplastic resin composition, comprising:
introducing carbon fibrils and a polyamide into a first mixture comprising a polyphenylene ether having an intrinsic viscosity of about 0.1 dl/g to about 0.60 dl/g as measured in chloroform at 25° C., a polyamide, and a compatibilizing agent to provide a second mixture comprising, based upon the total weight of the second mixture: about 10 to about 50 wt. % of the polyphenylene ether, about 35 to about 65 wt. % of the polyamide, about 0.4 to about 3 wt. % of the carbon fibrils, and about 0.4 to about 3 wt. % of the compatibilizing agent; and blending the second mixture at a temperature sufficient to melt the polyphenylene ether.
- 2. The method according to claim 1, wherein the first mixture is formed by precompounding the polyphenylene ether, the polyamide, and the compatibilizing agent at a temperature sufficient to melt the polyphenylene ether.
- 3. The method according to claim 2, wherein precompounding comprises precompounding the polyphenylene ether and the compatibilizing agent at a temperature sufficient to melt the polyphenylene ether prior to adding the polyamide.
- 4. The method according to claim 1, wherein the carbon fibrils and polyamide are in the form of a masterbatch.
- 5. The method according to claim 4, wherein the carbon fibrils and the polyamide are present in the masterbatch in a ratio of about 10 to about 30 wt. % of the carbon fibrils to about 90 to about 70 wt. % of the polyamide.
- 6. The method according to claim 5, wherein the ratio is about 15 to about 25 wt. % of the carbon fibrils to about 85 to about 75 wt. % of the polyamide.
- 7. The method according to claim 1, wherein the polyamide has a viscosity of about 90 ml/g to about 350 ml/g as measured in a 0.5 wt % solution in 96 wt % sulphuric acid in accordance with ISO 307.
- 8. The method according to claim 7, wherein the viscosity is about 110 ml/g to about 240 ml/g.
- 9. The method according to claim 1, wherein introducing the carbon fibrils and the polyamide into the first mixture further comprises introducing a talc and a polyamide into the first mixture.
- 10. The method according to claim 8, wherein the talc and the polyamide are in the form of a masterbatch.
- 11. The method according to claim 10, wherein the talc and the polyamide are present in the masterbatch in a ratio of about 5 to about 50 wt. % of the talc to about 95 to about 50 wt. % of the polyamide.
- 12. The method according to claim 1, wherein the intrinsic viscosity is about 0.29 dl/g to about 0.48 dl/g.
- 13. The method according to claim 1, wherein the compatibilizing agent is selected from the group consisting of liquid diene polymers, epoxy compounds, oxidized polyolefin wax, quinones, organosilane compounds, polyfunctional compounds, and combinations comprising at least one of the foregoing.
- 14. The method according to claim 1, wherein the first mixture further comprises about 1 to about 15 wt. % of an impact modifier based upon the total weight of the second mixture.
- 15. The method according to claim 14, wherein the first mixture is formed by precompounding the polyphenylene ether, the impact modifier and a portion of the compatibilizing agent at a temperature sufficient to melt the polyphenylene ether prior to adding the polyamide and the remainder of the compatibilizing agent.
- 16. The method according to claim 14, wherein the impact modifier is selected from the group consisting of A-B diblock copolymers, A-B-A triblock copolymers, partially hydrogenated A-B diblock copolymers, partially hydrogenated A-B-A triblock copolymers, selectively hydrogenated A-B diblock copolymers, selectively hydrogenated A-B-A triblock copolymers, and combinations comprising at least one of the foregoing.
- 17. The method according to claim 1, wherein the first mixture further comprises fillers and additives.
- 18. The method according to claim 1, wherein the polyphenylene ether comprises two polyphenylene ether components having different intrinsic viscosities.
- 19. A method for manufacturing a thermoplastic resin composition, comprising:
introducing carbon fibrils, talc and a polyamide into a first mixture comprising a polyphenylene ether having an intrinsic viscosity of about 0.10 dl/g to about 0.60 dl/g as measured in chloroform at 25° C., a polyamide, and a compatibilizing agent to provide a second mixture comprising, based upon the total weight of the second mixture: about 10 to about 50 wt. % of the polyphenylene ether, about 35 to about 65 wt. % of the polyamide, about 0.4 to about 3 wt. % of the carbon fibrils, about 5 wt. % to about 40 wt. % talc, and about 0.4 to about 3 wt. % of the compatibilizing agent; and blending the second mixture at a temperature sufficient to melt the polyphenylene ether.
- 20. The method according to claim 19, wherein introducing the carbon fibrils, the talc and the polyamide into the first mixture comprises introducing the talc into the first mixture prior to introducing the carbon fibrils and the polyamide.
- 21. The method according to claim 20, wherein the first mixture is formed by precompounding the polyphenylene ether, the talc, the compatibilizing agent and a portion of the polyamide at a temperature sufficient to melt the polyphenylene ether prior to adding the remainder of the polyamide.
- 22. The method according to claim 19, wherein the carbon fibrils and the polyamide are in the form of a masterbatch.
- 23. The method according to claim 22, wherein the carbon fibrils and the polyamide are present in the masterbatch in a ratio of about 10 to about 30 wt. % of the carbon fibrils to about 90 to about 70 wt. % of the polyamide.
- 24. The method according to claim 23, wherein the ratio is about 15 to about 25 wt. % of the carbon fibrils to about 85 to about 75 wt. % of the polyamide.
- 25. The method according to claim 19, wherein the talc and the polyamide are in the form of a masterbatch.
- 26. The method according to claim 25, wherein the talc and the polyamide are present in the masterbatch in a ratio of about 5 to about 50 wt. % of the talc to about 95 to about 50 wt. % of the polyamide.
- 27. The method according to claim 26, wherein the ratio is about 40 to about 50 wt. % of the talc to about 60 to about 50 wt. % of the polyamide.
- 28. The method according to claim 19, wherein the polyamide has a viscosity of about 90 ml/g to about 350 ml/g as measured in a 0.5 wt % solution in 96 wt % sulphuric acid in accordance with ISO 307.
- 29. The method according to claim 28, wherein the viscosity is about 110 ml/g to about 240 ml/g.
- 30. The method according to claim 19, wherein the first mixture further comprises about 1 to about 15 wt. % of an impact modifier based upon the total weight of the second mixture.
- 31. The method according to claim 30, wherein the first mixture is formed by precompounding the polyphenylene ether, the impact modifier and a portion of the compatibilizing agent at a temperature sufficient to melt the polyphenylene ether prior to introducing the polyamide and the remainder of the compatibilizing agent.
- 32. The method according to claim 30, wherein the impact modifier is selected from the group consisting of A-B diblock copolymers, A-B-A triblock copolymers, partially hydrogenated A-B diblock copolymers, partially hydrogenated A-B-A triblock copolymers, selectively hydrogenated A-B diblock copolymers, selectively hydrogenated A-B-A triblock copolymers, and combinations comprising at least one of the foregoing.
- 33. The method according to claim 19, wherein the first mixture further comprises fillers and additives.
- 34. The method according to claim 19, wherein the polyphenylene ether comprises two polyphenylene ether components having different intrinsic viscosities.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation application of U.S. patent application Ser. No. 10/064,321 filed Jul. 2, 2002, which is a continuation application of U.S. patent application Ser. No. 09/438,998 filed on Nov. 2, 1999, now U.S. Pat. No. 6,469,093 the contents of which are hereby incorporated by reference in their entirety.
Continuations (2)
|
Number |
Date |
Country |
Parent |
10064321 |
Jul 2002 |
US |
Child |
10249929 |
May 2003 |
US |
Parent |
09438998 |
Nov 1999 |
US |
Child |
10064321 |
Jul 2002 |
US |