Polyamide-polyarlene sulfide blends
AssigneeAmoco Corporation
InventorsYu-Tsai Chen, David P. Sinclair
Life of this patent
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Abstract
Polymer blends comprise a crystalline polyphthalamide component having high heat deflection temperature when filled with glass fibers and a polyarylene sulfide component.
Claims13
A composition comprising from about 10 to about 90 wt % of (i) a polyphthalamide comprising terephthalamide units, said polyphthalamide when filled with 33 weight percent glass fibers and molded having a heat deflection temperature at 264 psi according to ASTM D-648 of at least about 240.degree. C.;
- and from about 90 to about 10 wt % of (ii) a polyphenylene sulfide based on the total weight of said components (i) and (ii).
A composition comprising from about 10 to about 90 wt % of a polyphthalamide having a heat deflection temperature at 264 psi according to ASTM D-648 of at least about 240.degree. C. when filled with 33 weight percent glass fibers and molded, said polyphthalamide comprising the following recurring units:
- ##STR2## wherein the mole ratio of units A, B and C is about 40-100:0-35:0-60 and wherein R, R.sub.1 and R.sub.2 are independently divalent hydrocarbyl radicals;
- and
- from about 90 to about 10 wt % of a polyphenylene sulfide, the proportion of each said component being based on combined weight of said polyphthalamide and said polyphenylene sulfide.
A composition comprising from about 10 to about 90 wt % of a polyphthalamide having a heat deflection temperature at 264 psi according to ASTM D-648 of at least about 240.degree. C. when filled with 33 weight percent glass fibers and molded, said polyphthalamide comprising at least two different recurring units selected from the group consisting of the following recurring units:
- ##STR3## wherein R, R.sub.1 and R.sub.2 are independently divalent hydrocarbyl radicals;
- and
- from about 90 to about 10 wt % of a polyphenylene sulfide, the proportion of each said component being based on combined weight of said polyphthalamide and said polyphenylene sulfide.
Dependencies are inferred from the claim text.