Resin for use in manufacturing wet friction materials,...

Details Resin for use in manufacturing wet friction materials,... Resin for use in manufacturing wet friction materials,...

2006-07-11

2006-07-11

Truong, Duc (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C528S483000, C528S486000, C528S488000, C528S489000

Reexamination Certificate

active

07074877

ABSTRACT:
A resin for use in manufacturing wet friction materials which contributes to enhancing durability of manufactured wet friction materials, a manufacturing method thereof, and a wet friction material having excellent durability are provided. The resin for use in manufacturing wet friction materials can be obtained by reacting phenols with aldehydes in the presence of at least one basic catalyst, which contains a water-soluble phenolic resin as a main component. Further, the manufacturing method of the resin for wet friction materials includes a step of reacting phenols with aldehydes in the presence of at least one basic catalyst to obtain a water-soluble phenolic resin having a predetermined water percentage. Furthermore, the wet friction material is manufactured by impregnating a base material with the resin for wet friction materials.

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