发明授权
- 专利标题： Novolak resin mixtures
- 专利标题（中）： 酚醛清漆树脂混合物
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申请号： US953031申请日： 1992-09-28
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公开(公告)号： US5371169A公开(公告)日： 1994-12-06
- 发明人: Ping H. Lu , Anthony Canize , Dinesh N. Khanna , M. Dalil Rahman
- 申请人： Ping H. Lu , Anthony Canize , Dinesh N. Khanna , M. Dalil Rahman
- 申请人地址： NJ Somerville
- 专利权人： Hoechst Celanese Corporation
- 当前专利权人： Hoechst Celanese Corporation
- 当前专利权人地址： NJ Somerville
- 主分类号： C08L61/04
- IPC分类号： C08L61/04 ; C08L61/06 ; G03F7/023 ; H01L21/027 ; C08G14/04
摘要：
The present invention provides mixture of at least two novolak resins with a molecular weight distribution overlap of at least 50% and having dissolution rates which differ by a factor of at least 2.0. A method is also provided for producing such novolak resin mixtures.
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