Resin composition for use in manufacturing wet friction materials and wet friction material
AssigneesSumitomo Bakelite Co., Ltd., NSK-Warner K.K.
InventorsHiroshi Aiba, Masahiro Mori
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Abstract
A resin composition for wet friction materials contains as a main component a phenolic resin formed as a result of the reaction between phenols and aldehydes in the presence of a basic catalyst, and a particulate filler having a specific surface area of 35 to 410 m2/g as an additive. A wet friction material is formed using the resin composition for wet friction materials described above as a binder. The thus formed wet friction material exhibits a small initial rate of change in friction coefficient, a large positive gradient of Δμ-V characteristic, and excellent durability.
Claims14
A resin composition for wet friction materials, comprising:
- a phenolic resin contained as a major component, the phenolic resin being formed as a result of the reaction between phenols and aldehydes in the presence of a basic catalyst;
- and
- a particulate filler contained as an additive, the filler having a specific surface area of 35 to 410 m2/g.
Dependencies are inferred from the claim text.