发明名称 POLISHING PAD
摘要 <p>Disclosed is a polishing pad which is free from center-slow problems while having a good polishing rate and excellent life characteristics. Specifically disclosed is a polishing pad having a polishing layer which is made of a polyurethane resin foam having fine air bubbles. A high molecular weight polyol component as a raw material component for the polyurethane resin foam contains a hydrophobic high molecular weight polyol A having a number-average molecular weight of 550-800 and another hydrophobic high molecular weight polyol B having a number-average molecular weight of 950-1,300 at a weight ratio A/B of 10/90-50/50.</p>
申请公布号 KR20080031486(A) 申请公布日期 2008.04.08
申请号 KR20087004863 申请日期 2006.08.22
申请人 TOYO TIRE & RUBBER CO., LTD. 发明人 OGAWA KAZUYUKI;SHIMOMURA TETSUO;NAKAI YOSHIYUKI;NAKAMORI MASAHIKO;YAMADA TAKATOSHI
分类号 B24B37/20;B24B37/24;C08G18/65;H01L21/304 主分类号 B24B37/20
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