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US 6,586,373 B2Granted
Wet friction material
AssigneeNSK-Warner K.K.
InventorsMakoto Suzuki, Masahiro Mori, Hideki Tatewaki, Sousuke Kawai, Hirokazu Yagi
Life of this patent
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Abstract
A wet friction material comprises a fiber base material, a filler and a binder: wherein the filler contains a disc-shaped diatomaceous earth; wherein the filler contains at least one of a filler having Mohs hardness of 8 to 9.5 and a diatomaceous earth and the binder contains a specific silicone resin binder; or wherein the binder contains another specific silicone resin binder.
Claims15
A wet friction material comprising:
- a fiber base material;
- a filler containing a disc-shaped diatomaceous earth;
- and
- a binder.
1 more element
A wet friction material comprising:
- a fiber base material;
- a filler containing at least one of a filler having Mohs hardness of 8 to 9.5 and a diatomaceous earth;
- and
- a binder containing a silicone resin, the silicone resin being a hardened product of a hydrolyzed solution containing a silane coupling agent.
1 more element
A wet friction material comprising:
- a fiber base material;
- a filler;
- and
- a binder containing a silicone resin, the silicone resin being a hardened product of a hydrolyzed solution containing a mixture of a silane coupling agent represented by formula (1) below and a silane coupling agent represented by formula (2) below;
- (R1)(R2)nSi(OR3)3−n (1)
- wherein R1 represents an alkyl amino group having primary amino at the end;
- R2 and R3 each independently represents an alkyl group having 1 to 3 carbon atoms;
- and n represents an integer of 0 or 1,
- (R4)mSi(OR5)4−m (2)
- wherein R4 and R5 each independently represents an alkyl group having 1 to 3 carbon atoms;
- and m represents an integer of 1 or 2.
8 more elements
Dependencies are inferred from the claim text.