Double-layer lubrication coating composition, double-layer...

Details Double-layer lubrication coating composition, double-layer... Double-layer lubrication coating composition, double-layer...

2009-02-10

2011-12-27

Goloboy, Jim (Department: 1771)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

C508S155000, C508S165000, C508S181000, C508S591000, C092S223000, C029S888048

Reexamination Certificate

active

08082899

ABSTRACT:
A double-layer lubrication coating composition is made up of an upper-layer coating composition and a lower-layer coating composition. The upper-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 5 to 20 wt % of boron nitride, and 15 to 30 wt % of silicone nitride or alumina. The lower-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 15 to 30 wt % of polytetrafluoroethylene and 5 to 20 wt % of molybdenum disulfide and may include graphite as required.

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