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US 5,852,139 AGranted
Mixtures of thermoplastics and oxidized polyarlene sulfides
AssigneeTicona LLC
InventorDi Helmut Scheckenbach
Life of this patent
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Abstract
Polymer mixtures which comprise at least one thermoplastic and at least one oxidized polyarylene sulfide show particularly good tribological behaviour. The thermoplastics of the mixture are, for example, polyacetal, polyester, liquid-crystalline polymer, polyaryl ether ketone, polysulfone, polyether sulfone, polyphenylene sulfide or polyether imide. The oxidized polyarylene sulfide is preferably polyphenylene sulfone. The polymer mixtures are used for producing gear wheels, gear racks, bearings, chains, pulleys, rollers, wheels or gasket materials.
Claims17
A polymer mixture comprising:
- A. from 40 to 99.5% by weight of at least one non-fluoropolymeric thermoplastic component, and, filled therewith,
- B. from 0.5 to 60% by weight of at least one particulate, oxidized polyarylene sulfide having oxidized sulfur bridges, in which at least 10% of the sulfur bridges have been converted into sulfone bridges, sulfoxide bridges, or combinations thereof,
- where the percentages by weight of said components A and B are based upon the total weight of the polymer mixture, and wherein the polymer mixture is processable by thermoplastic processing and the oxidized PAS is inert under the processing conditions.
Dependencies are inferred from the claim text.