Invention Grant
- Patent Title: Method for producing hydroxyl-terminated (meth) acrylic polymer
- Patent Title (中): 羟基封端(甲基)丙烯酸聚合物的制备方法
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Application No.: US980407Application Date: 1997-11-28
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Publication No.: US5852129APublication Date: 1998-12-22
- Inventor: Masato Kusakabe , Kenichi Kitano , Yoshiki Nakagawa
- Applicant: Masato Kusakabe , Kenichi Kitano , Yoshiki Nakagawa
- Applicant Address: JPX Osaka
- Assignee: Kaneka Corporation
- Current Assignee: Kaneka Corporation
- Current Assignee Address: JPX Osaka
- Priority: JPX8-317195 19961128; JPX9-184684 19970710
- Main IPC: C08F2/46
- IPC: C08F2/46 ; C08F8/00 ; C08F8/26 ; C08F8/42 ; C08F20/10
Abstract:
A method for producing a hydroxyl-terminated (meth) acrylic polymer which comprises converting a halogen atom in a terminal structure of the general formula (1) --CH.sub.2 --C(R.sup.1)(CO.sub.2 R.sup.2)(X) (1) wherein R.sup.1 is hydrogen or methyl, R.sup.2 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or aralkyl containing 7 to 20 carbon atoms, and X is chlorine, bromine or iodine, of a (meth)acrylic polymer obtained by polymerizing a (meth)acrylic monomer using an organic halide or a halogenated sulfonyl compound as an initiator and, as a catalyst, a metal complex with a central metal selected from the elements belonging to the groups 8, 9, 10 and 11 in the periodic table, into a hydroxyl-containing substituent. The present invention can provide, in an easy and simple manner, a (meth)acrylic polymer which is hydroxyl-terminated at both ends in a high proportion and which has been difficult to produce in the prior art. It can give a cured product with good curing characteristics.
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