Title:
RADIATION CURABLE ORGANOPOLYSILOXANE COMPOSITION, AND RELEASE SHEET
Document Type and Number:
WIPO Patent Application WO/2020/230723
Kind Code:
A1
Abstract:
[Problem] The objective of the present invention is to provide a radiation curable organopolysiloxane composition that can provide a release sheet exhibiting a lighter release (that is to say, the force required for the release thereof from an adhesive layer is small) and having high adhesiveness to a base material compared to a release sheet comprising a cured product from a composition containing a (meth)acryloyl group-containing radical polymerizable organopolysiloxane of the prior art. [Solution] The radiation curable organopolysiloxane composition contains an (A) component, a (B) component, and a (C) component.
(A) The organopolysiloxane represented by formula (1)
(in the formula: each R1 independently represents a substituted or non-substituted monovalent hydrocarbon group having 1 to 10 carbons, an alkoxy group having 1 to 5 carbons, a hydroxyl group, a hydroxyl group-containing organic group, or a (meth)acryloyl group-containing organic group, at least one of the R1 groups representing a (meth)acryloyl group-containing organic group; a represents an integer of 2 or greater, b represents an integer of 0 or greater, c represents an integer of 0 or greater, and d represents an integer of 0 or greater, so as to satisfy 2 ≤ a+b+c+d ≤ 1,000; with respect to the total number of (meth)acryloyl group-containing organic groups, hydroxyl groups and hydroxyl group-containing organic groups from among the R1 groups, the ratio of the number of hydroxyl groups and hydroxyl group-containing organic groups is 0.4 or lower),
(B) a compound having two or more acryloyl groups within one molecule, at an amount of 0.1 to 50 parts by mass with respect to 100 parts by mass of the (A) component, and
(C) a radical polymerization initiator, at an amount of 0.1 to 15 parts by mass with respect to 100 parts by mass of the (A) component.
Inventors:
TANAKA KENJI (JP)
AOKI SHUNJI (JP)
KOBAYASHI ATARU (JP)
AOKI SHUNJI (JP)
KOBAYASHI ATARU (JP)
Application Number:
PCT/JP2020/018673
Publication Date:
November 19, 2020
Filing Date:
May 08, 2020
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
B32B27/00; C08F290/14; C08G77/20
Foreign References:
| JPH078908A | 1995-01-13 | |||
| JPH1135895A | 1999-02-09 | |||
| JPH04239526A | 1992-08-27 | |||
| JP2002194249A | 2002-07-10 | |||
| JP2007066352A | 2007-03-15 | |||
| JP2014043547A | 2014-03-13 | |||
| JPH0583570B2 | 1993-11-26 | |||
| JP2669947B2 | 1997-10-29 | |||
| US6268404B1 | 2001-07-31 | |||
| US6548568B1 | 2003-04-15 | |||
| US6268404B1 | 2001-07-31 | |||
| US6548568B1 | 2003-04-15 | |||
| JP3780113B2 | 2006-05-31 | |||
| JP2016041774A | 2016-03-31 |
Other References:
See also references of EP 3970967A4
Attorney, Agent or Firm:
MATSUI Mitsuo et al. (JP)
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