Phenolic hydrazine containing poly(arylene sulfide) having comparative tracking index improvement
AssigneePhillips Petroleum Company
InventorNathaniel Harry, Sr.
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Abstract
The present invention provides: a novel poly(arylene sulfide) (PAS) composition having an increased comparative tracking index (CTI) rating; a novel method wherein the inventive composition is formed and molded to produce a useful article; a novel article produced by the inventive molding method; a novel method wherein the inventive composition is formed and used to encapsulate an article; and a novel encapsulated article produced by the inventive encapsulation method. The inventive PAS composition comprises: poly(arylene sulfide) resin; talc; and an amount of hindered phenol sufficient to increase the composition's CTI rating.
Claims17
A poly(arylene sulfide) composition comprising:
- poly(arylene sulfide) resin;
- talc;
- and N,N'-bis[3-(3', 5'-di-tert-butyl-4-hydroxyphenyl)] propanyl hydrazine, wherein said N,N'-bis[3-(3',5'-di-tert-butyl-4-hydroxyphenyl)] propanyl hydrazine is present in said composition in an amount sufficient to increase the comparative tracking index (CTI) rating of said composition.
A poly(arylene sulfide) composition comprising:
- (a) poly(arylene sulfide) resin, at least about 90% of the repeating units of said poly(arylene sulfide) resin being unsubstituted p-phenylene sulfide repeating units;
- (b) talc;
- (c) glass fiber;
- and
- (d) N,N'-bis(3',5'-di-tert-butyl-4-hydroxyphenyl)]propanyl hydrazine, wherein said N,N'-bis[3-(3',5'-di-tert-butyl-4-hydroxy-phenyl)] propanyl hydrazine is present in said composition in an amount sufficient to increase the CTI rating of said composition.
A method of improving the CTI rating of a poly(arylene sulfide) resin composition comprising the step of adding an amount of talc and an amount of N,N'-bis[3-(3',5'-di-tert-butyl-4-hydroxyphenyl)] propanyl hydrazine to said composition such that said composition comprises from about 30 to about 60 parts by weight poly(arylene sulfide) resin, from about 25 to about 60 parts by weight of said talc, and from about 0.5 to about 3.0 parts by weight of said N,N'-bis[3-(3', 5'-di-tert-butyl-4-hydroxy-phenyl)] propanyl hydrazine.
Dependencies are inferred from the claim text.