Wet friction material
AssigneeShowa Denko K.K.
InventorsKenta Asakawa, Noriyoshi Ono
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Abstract
The wet friction material of the present invention is obtained by impregnating a friction base material with a bonding resin composition comprising a resol phenolic resin and a maleinized drying oil and curing the resulting material. The maleinized drying oil is obtained by reacting a drying oil such as tung oil or linseed oil with anhydrous maleic acid. The content thereof is preferably 50 to 250 parts by weight, based on 100 parts by weight of the resol phenolic resin. The wet friction material of the present invention has a high static friction coefficient and excellent durability.
Claims4
A wet friction material obtained by impregnating a friction base material with a bonding resin composition comprising a resol phenolic resin and a maleinized drying oil and curing the resulting material.
Dependencies are inferred from the claim text.