ABRASIVE PAD

WIPO Patent Application WO/2011/105494

A1

Provided is an abrasive pad which comprises an abrasive layer having a phase separation structure, achieves high abrasion speed, excels in planarization properties, and is capable of curbing the occurrence of scratches. The abrasive pad comprises the abrasive layer. The abrasive layer is formed of an isocyanate terminated prepolymer (A), an isocyanate terminated prepolymer (B), and a reaction-hardened body of a polyurethane raw material composition containing a chain extender, said isocyanate terminated prepolymer (A) being obtained by reacting a prepolymer raw material composition (a) containing an isocyanate component and a polyester-based polyol, and said isocyanate terminated prepolymer (B) being obtained by reacting a prepolymer raw material composition (b) containing an isocyanate component and a polyester-based polyol. The abrasive pad is characterized in that the reaction-hardened body has a phase separation structure.

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SHIMIZU, Shinji (LTD. 17-18Edobori 1-chome,Nishi-ku,Osaka-sh, Osaka 61, 〒5508661, JP)
清水　紳司 (〒61 大阪府大阪市西区江戸堀１丁目１７番１８号　東洋ゴム株式会社内 Osaka, 〒5508661, JP)

JP2011/054157

September 01, 2011

February 24, 2011

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TOYO TIRE & RUBBER CO.,LTD. (17-18, Edobori 1-chomeNishi-ku,Osaka-sh, Osaka 61, 〒5508661, JP)
東洋ゴム工業株式会社 (〒61 大阪府大阪市西区江戸堀１丁目１７番１８号 Osaka, 〒5508661, JP)
SHIMIZU, Shinji (LTD. 17-18Edobori 1-chome,Nishi-ku,Osaka-sh, Osaka 61, 〒5508661, JP)

B24B37/00; C08G18/10; H01L21/304

UNIUS PATENT ATTORNEYS OFFICE (SHIN-OSAKA MT Bldg. 1, 13-9 Nishinakajima 5-chome,Yodogawa-ku, Osaka-shi, Osaka 11, 〒5320011, JP)

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