发明申请
- 专利标题: POLISHING PAD
- 专利标题(中): 抛光垫
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申请号: US12593206申请日: 2008-03-13
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公开(公告)号: US20100048102A1公开(公告)日: 2010-02-25
- 发明人: Yoshiyuki Nakai , Atsushi Kazuno , Tsuyoshi Kimura , Tetsuo Shimomura , Kazuyuki Ogawa
- 申请人: Yoshiyuki Nakai , Atsushi Kazuno , Tsuyoshi Kimura , Tetsuo Shimomura , Kazuyuki Ogawa
- 申请人地址: JP Osaka-shi
- 专利权人: Toyo Tire & Rubber Co., Ltd
- 当前专利权人: Toyo Tire & Rubber Co., Ltd
- 当前专利权人地址: JP Osaka-shi
- 优先权: JP2007-084785 20070328
- 国际申请: PCT/JP2008/054583 WO 20080313
- 主分类号: B24B7/20
- IPC分类号: B24B7/20 ; C08J9/00
摘要:
A polishing pad capable of maintaining a high level of dimensional stability upon moisture absorption or water absorption and providing high polishing rate includes a polishing layer of a polyurethane foam having fine cells, wherein the polyurethane foam includes a cured product of a reaction of (1) an isocyanate-terminated prepolymer (A) that includes an isocyanate monomer, a high molecular weight polyol (a), and a low molecular weight polyol, (2) an isocyanate-terminated prepolymer (B) that includes a polymerized diisocyanate and a polyethylene glycol with a number average molecular weight of 200 to 1,000, and (3) a chain extender.
公开/授权文献
- US08865785B2 Polishing pad 公开/授权日:2014-10-21