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Patent Searching and Data


Title:
PRODUCTION METHOD OF RADICAL POLYMERIZABLE ORGANOPOLYSILOXANE, RADIATION CURABLE ORGANOPOLYSILOXANE COMPOSITION, AND RELEASE SHEET
Document Type and Number:
WIPO Patent Application WO/2019/082601
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide (meth)acryloyl group-containing radical polymerizable organopolysiloxane with low viscosity and to provide a method for producing said organopolysiloxane at low cost and without the use of harmful raw materials. A further purpose of the present invention is to provide a (meth)acryloyl group-containing organopolysiloxane that is useful for providing a release sheet that has light release and high adhesion. [Solution] This (meth)acryloyl group-containing organopolysiloxane production method is characterized by including a step in which (a1) an organopolysiloxane represented by average composition formula (1) and having at least one hydroxyl group-containing group and (a2) a (meth)acrylic acid ester represented by general formula (2) and having an alkoxy group of 1-6 carbons, in an amount such that the molar ratio thereof to the hydroxyl groups in component (a1) is 1-10, are subjected to a transesterification reaction in the presence of component (a3) and component (a4) described below, to obtain the aforementioned (meth)acryloyl group-containing organopolysiloxane. (a3) a zirconium metal complex, in an amount such that the molar ratio thereof to 1 mol of hydroxyl groups in the component (a1) is 0.001-0.1 (a4) a hydroxyl group-containing amine represented by HON(R4)2, in an amount such that the molar ratio thereof to component (a3) is 0.10-1.5 (in the formula, R4s are mutually independent, linear-chain or branched-chain aliphatic hydrocarbon groups with 1-6 carbons.

Inventors:
TANAKA KENJI (JP)
AOKI SHUNJI (JP)
Application Number:
PCT/JP2018/036433
Publication Date:
May 02, 2019
Filing Date:
September 28, 2018
Export Citation:
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Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C08G77/382; B32B27/00; C08F299/08
Foreign References:
JP2017149871A2017-08-31
JP2009517526A2009-04-30
JPS63185989A1988-08-01
JPH0583570B21993-11-26
JP3780113B22006-05-31
JP3925604B22007-06-06
JPS5433426B21979-10-20
JP2583677B21997-02-19
JP2669947B21997-10-29
JP4251575B22009-04-08
JP5882334B22016-03-09
JP6025476B22016-11-16
Other References:
See also references of EP 3702396A4
Attorney, Agent or Firm:
MATSUI Mitsuo et al. (JP)
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