Friction material composition and friction material using...

Details Friction material composition and friction material using... Friction material composition and friction material using...

2004-05-21

2008-03-04

Wyrozebski, Katarzyna (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S150000, C523S152000, C523S155000, C523S156000

Reexamination Certificate

active

07338987

ABSTRACT:
There are disclosed a friction material composition which comprises a fibrous material except for asbestos, an inorganic friction regulator, an organic friction regulator and a binder, part of the inorganic friction regulator is α alumina and γ alumina in combination, a weight ratio of the α alumina and the γ alumina, α alumina:γ alumina, is in the range of 1:20 to 1:5, and part or whole part of the binder is a silicon-containing phenol resin, and a friction material obtained by molding the friction material composition under heating and pressure.

REFERENCES:
patent: 3003919 (1961-10-01), Broge
patent: 3584718 (1971-06-01), Schiefer et al.
patent: 5693239 (1997-12-01), Wang et al.
patent: 6220404 (2001-04-01), Hara et al.
patent: 6355601 (2002-03-01), Takenaka et al.
patent: 2004/0247847 (2004-12-01), Nagayoshi et al.
Communication and European Search Report mailed Oct. 6, 2004, for No. EP 04 01 2240.

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