发明名称 |
Preparation of homo-, co- and terpolymers of substituted styrenes |
摘要 |
A novel one-pot cost efficient process for the preparation of homo-, co- and terpolymers of p-hydroxystyrene or substituted p-hydroxystyrene and alkyl acrylates. The process involves polymerization of esters of p-hydroxystyrene (or its substituted analogs), alkyl acrylate monomers and/or one or more of ethylenically unsaturated monomers in an alcohol solvent in the presence of a free radical initiator. The reaction mixture containing the so formed polymer is subjected to transesterification conditions using a catalytic amount of catalyst to result in co- and/or terpolymers of p-hydroxystyrene without cleavage of the alkyl ester in the acrylate repeat unit, and then removing the catalyst from the system. Preferred embodiments include homopolymers of p-hydroxystyrene, copolymer of p-hydroxystyrene and tert-butyl acrylate and terpolymer of p-hydroxystyrene, tert-butyl acrylate and styrene. These polymers have a wide variety of applications including as photoresists in microelectronics industry.
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申请公布号 |
US2002156199(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20020126719 |
申请日期 |
2002.04.19 |
申请人 |
SHEEHAN MICHAEL T.;SOUNIK JAMES R. |
发明人 |
SHEEHAN MICHAEL T.;SOUNIK JAMES R. |
分类号 |
G03F7/039;C08F6/00;C08F6/02;C08F6/04;C08F8/00;C08F8/12;C08F8/14;C08F212/14;G03F7/004;(IPC1-7):C08F126/06 |
主分类号 |
G03F7/039 |
代理机构 |
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