Invention Grant
- Patent Title: Resol phenolic resin for friction material, method for producing the same, adhesive for friction material, and wet friction plate
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Application No.: US15087232Application Date: 2016-03-31
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Publication No.: US10259902B2Publication Date: 2019-04-16
- Inventor: Hajime Mifuka , Tadashige Hirano , Kenichi Iso
- Applicant: SUMITOMO BAKELITE CO., LTD. , NSK-WARNER K.K.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO BAKELITE COMPANY LIMITED
- Current Assignee: SUMITOMO BAKELITE COMPANY LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2015-072169 20150331
- Main IPC: B32B7/00
- IPC: B32B7/00 ; B32B7/12 ; C08G8/24 ; B32B15/00 ; B32B15/04 ; B32B27/00 ; B32B27/06 ; B32B27/28 ; F16D69/02 ; F16D69/04 ; C09J161/06
Abstract:
According to the present invention, there is provided a resol phenolic resin for a friction material wherein the resol phenolic resin has a structural unit A represented by Formula (1) and a structural unit B represented by Formula (2): wherein in Formula (1), m represents an integer of 1 or more; in a case where m is 1, R represents a methylol group; and in a case where m is 2 or more, R's independently represent a hydrogen atom or a methylol group and at least one R is a methylol group; and wherein in Formula (2), n represents an integer of 1 or more; in a case where n is 1, R represents a methylol group; and in a case where n is 2 or more, R's independently represent a hydrogen atom or a methylol group and at least one R is a methylol group.
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