Polyetherimide bearing compositions

Claim 1

A bearing composition which comprises a polyetherimide resin of the formula: ##STR13## and the following modifiers and reinforcements: (a) from about 1% to about 25% by wt. of a fluoropolymer; (b) from about 1% to about 25% by wt. of a lubricating agent selected from the group consisting of silicone fluid, a molybdenum disulfide, graphite or a molybdenum disulfide-containing solid lubricant, or any mixture thereof; and (c) from 0% to about 50% of a reinforcing agent selected from the group consisting of glass fibers, carbon fibers, glass beads and mixtures thereof; wherein the above proportions are selected such that said bearing compositions contain from about 35% by wt. to about 60% by wt. polyetherimide resin and from about 40% by wt. to about 65% by wt. modifiers and reinforcements; wherein "a" represents a whole number from about 10 to about 10,000, the group --O--A< is selected from: ##STR14## wherein R' is hydrogen, lower alkyl or lower alkoxy; Z is a member of the class consisting of (1) ##STR15## and (2) divalent organic radicals of the general formula ##STR16## where X is a member selected from the class consisting of divalent radicals of the formula: ##STR17## where q is 0 or 1, y is a whole number from 1 to 5 and R is a divalent organic radical selected from the class consisting of (1) aromatic hydrocarbon radicals having from 6 to 20 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (3) divalent radicals of the formula ##STR18## where Q is a member selected from the class consisting of ##STR19## where x is a whole number from 1 to 5 inclusive.