Invention Grant
- Patent Title: Friction material composition, friction material, and friction member
-
Application No.: US16491195Application Date: 2017-03-06
-
Publication No.: US11649869B2Publication Date: 2023-05-16
- Inventor: Kazuya Baba , Teruyuki Nagayoshi , Yuichi Fukuzawa
- Applicant: HITACHI CHEMICAL COMPANY, LTD.
- Applicant Address: JP Tokyo
- Assignee: RESONAC CORPORATION
- Current Assignee: RESONAC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Fitch, Even, Tabin & Flannery, LLP
- International Application: PCT/JP2017/008849 2017.03.06
- International Announcement: WO2018/163256A 2018.09.13
- Date entered country: 2019-09-05
- Main IPC: F16D69/02
- IPC: F16D69/02 ; F16D65/04

Abstract:
There are provided a friction material composition containing no copper or having a reduced content of copper that can provide a friction material in which the stability of the friction coefficient after standing in a cold environment, the abrasion resistance, and the low rust fixation properties are excellent, and squeal (particularly low temperature squeal) is suppressed, and a friction material obtained by molding the friction material composition, and a friction member using the friction material. The friction material composition is specifically a friction material composition comprising a bonding material, an organic filler, an inorganic filler, and a fiber substrate, in which the friction material composition comprises no copper, or has a content of copper of less than 0.5% by mass in terms of a copper element even if comprising the copper, and comprises, as the organic filler, cashew particles to which a silicone resin adheres.
Public/Granted literature
- US20200032868A1 FRICTION MATERIAL COMPOSITION, FRICTION MATERIAL, AND FRICTION MEMBER Public/Granted day:2020-01-30
Information query