发明名称 |
Wet friction material and process for producing the same |
摘要 |
A wet friction material is mainly composed of a fiber base material, a filler, an friction adjusting agent and a thermosetting resin. The wet frictional material is prepared by impregnating with a liquid thermosetting resin a paper formed by mixing a paper-forming solid thermosetting resin with a fiber base material as at least a part of filler, and then applying heat to the paper so that it is hardened. The solid thermosetting resin is preferably a phenol resin. The liquid thermosetting resin is preferably made of a silicone resin represented by the following average composition formula and the amount of trifunctional unit monomers (RSiO3/2 in which R represents a substituted or unsubstituted monovalent hydrocarbon group) in monomers constituting said silicone resin is from 40 to 100 mol-%:
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申请公布号 |
US6331358(B1) |
申请公布日期 |
2001.12.18 |
申请号 |
US19990261203 |
申请日期 |
1999.03.03 |
申请人 |
NSK-WARNER KABUSHIKI KAISHA |
发明人 |
KITAHARA SHUN;MURAMATSU FUMIMASA;UMEZAWA SHIGEKI |
分类号 |
C08J5/14;C08K7/02;C08L61/04;C08L83/04;C09K3/14;D21H17/48;D21H17/52;D21H17/59;D21H25/06;F16D13/62;F16D69/02;(IPC1-7):B32B5/16;F16D11/00 |
主分类号 |
C08J5/14 |
代理机构 |
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