发明授权
- 专利标题： Process for producing polyfunctional cyanate ester polymer
- 专利标题（中）： 制备多官能氰酸酯聚合物的方法
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申请号： US109199申请日： 1987-10-16
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公开(公告)号： US4820855A公开(公告)日： 1989-04-11
- 发明人: Morio Gaku , Hidenori Kimbara
- 申请人： Morio Gaku , Hidenori Kimbara
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-245456 19861017; JPX61-307778 19861225
- 主分类号： C08G73/06
- IPC分类号： C08G73/06 ; C07F9/09 ; C07C122/00
摘要：
A process for producing a polyfunctional cyanate ester polymer which comprises heating at least one polyfunctional cyanate ester compound having the formula:R--OCN).sub.mwherein m is an integer of at least 2 and R is one or more aromatic organic groups, and the cyanato groups are bonded to the arylene ring, in the presence of a catalytic amount of a dialkyl tin oxide having the formula:R.sup.1 R.sup.2 SnOwherein each of R.sup.1 and R.sup.2 is C.sub.1 -C.sub.30 alkyl is disclosed.
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