Reinforced polyphthalamide/poly(phenylene ether) composition
View Patent ↗Disclosed herein is a reinforced composition comprising: 55 to 80 wt % of a compatibilized blend of a polyphthalamide and a poly(phenylene ether) wherein said compatibilized blend is formed from a mixture of polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and a functionalizing agent in an amount sufficient to effect compatibilization; and 20 to 45 wt % of a nylon glass fiber, wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
1. A reinforced composition comprising:
55 to 80 wt % of a compatibilized blend of a polyphthalamide and a poly(phenylene ether) wherein said compatibilized blend is formed from a mixture of polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and a functionalizing agent in an amount sufficient to effect compatibilization; and
20 to 45 wt % of a nylon glass fiber,
wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
2. The reinforced composition of claim 1 , wherein the polyphthalamide is present in an amount of 30 to 70 weight percent and the poly(phenylene ether) is present in an amount of 10 to 30 weight percent, and weight percent is based on the total weight of the composition.
3. The reinforced composition of claim 1 , wherein the polyphthalamide has a melting point greater than 290° C. and a glass transition temperature greater than or equal to 80° C.
4. The reinforced composition of claim 1 , wherein the composition is substantially free of added aliphatic polyamides.
5. The reinforced composition of claim 1 , wherein the glass fiber has an average diameter of 8 to 16 micrometers.
6. The reinforced composition of claim 1 , wherein the glass fiber has an average length of 2.8 to 3.6 millimeters.
7. The reinforced composition of claim 1 , wherein the poly(phenylene ether) comprises 2,6-dimethyl-1,4-phenylene ether units.
8. The reinforced composition of claim 1 , wherein the polyphthalamide comprises (a) 60-70 mol % of units of formula (I)
wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from terephthalic acid, (b) 20-30 mol % of units of formula (I) wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from isophthalic acid, and (c) 5-15 mol % of units of formula (II)
wherein Q 2 is a 1,4-butyl group and Q 3 is a 1,6-hexyl group.
9. The reinforced composition of claim 1 , wherein the functionalizing agent comprises maleic anhydride, fumaric acid, or citric acid.
10. The reinforced composition of claim 1 , wherein the functionalizing agent is citric acid.
11. The reinforced composition of claim 1 , wherein the citric acid is used in an amount of 0.2 to 0.9 weight percent based on the total weight of the composition.
12. The reinforced composition of claim 1 , further comprising a black pigment.
13. The reinforced composition of claim 12 , wherein the black pigment is carbon black and is present in an amount up to 0.5 weight percent, based on the total weight of the composition.
14. A reinforced composition comprising
55 to 80 wt % of a compatibilized blend of a polyphthalamide comprising (a) 60-70 mol % of units of formula (I)
wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from terephthalic acid, (b) 20-30 mol % of units of formula (I) wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from isophthalic acid, and (c) 5-15 mol % of units of formula (II)
wherein Q 2 is a 1,4-butyl group and Q 3 is a 1,6-hexyl group, and a poly(phenylene ether) comprising 2,6-dimethyl-1,4-phenylene ether units wherein said compatibilized blend is formed from a mixture of said polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and 0.2 to 0.9 weight percent citric acid; and
20 to 45 wt % of a nylon glass fiber, wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
15. The composition of claim 14 , wherein the polyphthalamide is present in an amount of 30 to 70 weight percent, the poly(phenylene ether) is present in an amount of 10 to 30 weight percent, and weight percent is based on the total weight of the composition.
16. The reinforced composition of claim 14 , wherein the polyphthalamide has a melting point greater than 290° C. and a glass transition temperature greater than or equal to 80° C.
17. The reinforced composition of claim 14 , wherein the composition is substantially free of added aliphatic polyamides.
18. The reinforced composition of claim 14 , wherein the glass fiber has an average diameter of 8 to 16 micrometers.
19. The reinforced composition of claim 14 , wherein the glass fiber has an average length of 2.8 to 3.6 millimeters.
20. The reinforced composition of claim 14 , further comprising a black pigment.
21. The reinforced composition of claim 20 , wherein the black pigment is carbon black and is present in an amount up to 0.5 weight percent, based on the total weight of the composition.
22. An article comprises a reinforced composition comprising
55 to 75 wt % of a compatibilized blend of a polyphthalamide and a poly(phenylene ether) wherein said compatibilized blend is formed from a mixture of polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and a functionalizing agent in an amount sufficient to effect compatibilization; and
20 to 45 wt % of a nylon glass fiber, wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
23. The article of claim 22 , wherein the polyphthalamide is present in an amount of 30 to 70 weight percent and the poly(phenylene ether) is present in an amount of 10 to 30 weight percent, and weight percent is based on the total weight of the composition.
24. The article of claim 22 , wherein the polyphthalamide has a melting point greater than 290° C. and a glass transition temperature greater than or equal to 80° C.
25. The article of claim 22 , wherein the composition is substantially free of added aliphatic polyamides.
26. The article of claim 22 , wherein the glass fiber has an average diameter of 8 to 16 micrometers.
27. The article of claim 22 , wherein the glass fiber has an average length of 2.8 to 3.6 millimeters.
28. The article of claim 22 , wherein the poly(phenylene ether) comprises 2,6-dimethyl-1,4-phenylene ether units.
29. The article of claim 22 , wherein the polyphthalamide comprises (a) 60-70 mol % of units of formula (I)
wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from terephthalic acid, (b) 20-30 mol % of units of formula (I) wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from isophthalic acid, and (c) 5-15 mol % of units of formula (II)
wherein Q 2 is a 1,4-butyl group and Q 3 is a 1,6-hexyl group.
30. The article of claim 22 , wherein the functionalizing agent comprises maleic anhydride, fumaric acid, or citric acid.
31. The article of claim 22 , wherein the functionalizing agent is citric acid.
32. The article of claim 22 , wherein the citiric acid is used in an amount of 0.2 to 0.9 weight percent based on the total weight of the composition.
33. The article of claim 22 , wherein the composition further comprises a black pigment.
34. The article of claim 33 , wherein the black pigment is carbon black and is present in an amount up to 0.5 weight percent based on the total weight of the composition.
35. The article of claim 22 , wherein the article is selected from the group consisting of engine cooling components, engine fluid handling components, hoses, pumps, manifolds, turbo outlets, and fluid meters.
36. An article comprises 55 to 80 weight percent (wt %) of a compatibilized blend of a polyphthalamide comprising (a) 60-70 mol % of units of formula (I)
wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from terephthalic acid, (b) 20-30 mol % of units of formula (I) wherein Q 1 is a 1,6-hexyl group and the aromatic portion of the repeating unit is derived from isophthalic acid, and (c) 5-15 mol % of units of formula (II)
wherein Q 2 is a 1,4-butyl group and Q 3 is a 1,6-hexyl group, and a poly(phenylene ether) comprising 2,6-dimethyl-1,4-phenylene ether units wherein said compatibilized blend is formed from a mixture of said polyphthalamide and poly(phenylene ether) in a ratio of between 1.5:1 and 7.0:1, and 0.2 to 0.9 weight percent citric acid; and
20 to 45 wt % of a nylon glass fiber, wherein the composition contains less than 0.1 wt % of phosphinates and less than 0.1 wt % of impact modifiers and weight percent is based on the total weight of the composition.
37. The article of claim 36 , wherein the polyphthalamide is present in an amount of 30 to 70 weight percent, the poly(phenylene ether) is present in an amount of 10 to 30 weight percent, and weight percent is based on the total weight of the composition.
38. The article of claim 36 , wherein the polyphthalamide has a melting point greater than 290° C. and a glass transition temperature greater than or equal to 80° C.
39. The article of claim 36 , wherein the composition is substantially free of added aliphatic polyamides.
40. The article of claim 36 , wherein the glass fiber has an average diameter of 8 to 16 micrometers.
41. The article of claim 36 , wherein the glass fiber has an average length of 2.8 to 3.6 millimeters.
42. The article of claim 36 , wherein the composition further comprises a black pigment.
43. The article of claim 37 , wherein the black pigment is carbon black and is present in an amount up to 0.5 weight percent, based on the total weight of the composition.
44. The article of claim 36 , wherein the article wherein is selected from the group consisting of engine cooling components, engine fluid handling components, hoses, pumps, manifolds, turbo outlets, and fluid meters.