发明名称 |
Selected methylol-substituted trihydroxybenzophenones and their use in phenolic resin compositions |
摘要 |
A methylol-substituted trihydroxybenzophenone of the formula (I): <IMAGE> (I) This methylol-substituted trihydroxybenzophenone may be reacted with selected phenolic monomers during or after the formation of a phenolic novolak resin thereby said resin having at least one unit of formula (II): <IMAGE> (II) wherein R and R1 are individually selected from hydrogen, a lower alkyl group having 1 to 4 carbon atoms or a lower alkoxy group having 1 to 4 carbon atoms.
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申请公布号 |
US5177172(A) |
申请公布日期 |
1993.01.05 |
申请号 |
US19910654841 |
申请日期 |
1991.02.13 |
申请人 |
OCG MICROELECTRONIC MATERIALS, INC. |
发明人 |
TOUKHY, MEDHAT A. |
分类号 |
G03F7/023 |
主分类号 |
G03F7/023 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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