The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2009
Filed:
Mar. 24, 2006
Masahiro Mori, Shizuoka, JP;
Hirokazu Yagi, Shizuoka, JP;
Sousuke Kawai, Shizuoka, JP;
NSK-Warner Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention provides a wet friction material having high friction coefficient, excellent compression fatigue property and positive gradient of a μ-V property. The wet friction material contains a paper base material and a binder, in which the binder contains a cured material of a liquid resin composition obtained by mixing a hydrolyzed solution of a silane coupling agent represented by the following formula (1) and a resol-type phenol resin, and a weight ratio (S/R) between respective non-volatile components of the hydrolyzed solution (S) of the silane coupling agent and the resol-type phenol resin (R) is in the range of from 80/20 to 20/80: (X)(R)Si(OR)(1), in which X represents an alkylamino group having a primary amine at a terminal; Rand Reach independently represent an alkyl group having from 1 to 3 carbon atoms; and n represents an integer of 0 or 1.