Heat-resistant lubricative resin composition

Details Heat-resistant lubricative resin composition Heat-resistant lubricative resin composition

1996-07-09

1999-05-04

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525133, 525151, C08L 7908

Patent

active

059004533

ABSTRACT:
A heat-resistant, lubricative resin composition which can withstand temperatures of 250-270.degree. C., which is wear-resistant and low in friction, and which is less likely to attack a soft alloy such as aluminum alloy, and a high-performance, heat-resistant sliding bearing formed from the abovementioned heat-resistant, lubricative resin composition. The resin composition is made up of a thermoplastic polyimide resin represented by the following formula, and 8-38% by volume of tetrafluoroethylene resin and 3-25% by volume of aromatic polyester resin, ##STR1## (where X is a direct connection or a group selected from the group consisting of a hydrocarbon group having 1-10 carbon atoms, a hexafluorinated isopropylidene group, a carbonyl group, a thio group and a sulfonic group; R1-R4 are hydrogen, lower alkyl groups, lower alkoxy groups, chlorine or bromine, and may be the same or different from one another; Y is a tetravalent group selected from the group consisting of an aliphatic group having two or more carbon atoms, a cyclic aliphatic group, a monocyclic aromatic group, a condensed polycyclic aromatic group, a non-condensed polycyclic aromatic group made up of aromatic groups coupled together direcly or through crosslinking agents.)

REFERENCES:
patent: 4417020 (1983-11-01), Bailey
patent: 4871817 (1989-10-01), Rock
patent: 4908419 (1990-03-01), Holub
patent: 5312866 (1994-05-01), Tsutsumi

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