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Title:
EMULSION-BASED HIGH RELEASE ADDITIVE FOR RELEASE SHEET, EMULSION COMPOSITION FOR RELEASE SHEET, AND MOLD RELEASE SHEET
Document Type and Number:
WIPO Patent Application WO/2013/176043
Kind Code:
A1
Abstract:
The present invention relates to an emulsion-based high release additive for a release sheet, the additive being characterized by being obtained by dispersing in water a condensation product (A) obtained by subjecting the following to a dehydration condensation reaction: (A-1) a polydiorganosiloxane which has an average degree of polymerization of 100-300,000 and which has one or more hydroxyl groups or hydrolyzable groups per molecule; and (A-2) a polyorganosiloxane resin, which contains (SiO4/2) units and (R3SiO1/2) units (in the formulae, the R groups each represent independently a monovalent hydrocarbon group having 1-12 carbon atoms and not having an aliphatic unsaturated bond or an alkenyl group having 2-6 carbon atoms) as primary components, in which the molar ratio of (R3SiO1/2) units relative to (SiO4/2) units is 0.6-1.2 and in which the total content of hydroxyl groups and hydrolyzable groups is not lower than 2.1 mass % and lower than 10.0 mass %. The present invention can obtain a silicone cured coating film having a high release force by adding the additive to a curable composition for a release sheet such as a release paper or release film, coating the same on a variety of base materials and curing.

Inventors:
YAMAMOTO KENJI (JP)
IHARA TOSHIAKI (JP)
NAKAJIMA TSUTOMU (JP)
Application Number:
PCT/JP2013/063750
Publication Date:
November 28, 2013
Filing Date:
May 17, 2013
Export Citation:
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Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C09K3/00; C08G77/44; C08L83/05; C08L83/07; C08L83/10
Foreign References:
JP2007523225A2007-08-16
JP2009012317A2009-01-22
JP2010037557A2010-02-18
JP2007106908A2007-04-26
JPS5729676A1982-02-17
JPS4927033B11974-07-13
JPH10245540A1998-09-14
JP2005509046A2005-04-07
JP2000086893A2000-03-28
JPH10110156A1998-04-28
JPH1161094A1999-03-05
JPS5984953A1984-05-16
JPH0553183B21993-08-09
JP2750896B21998-05-13
JP2742835B21998-04-22
JPH0686582B21994-11-02
JPH10110156A1998-04-28
JP2010037557A2010-02-18
Other References:
See also references of EP 2860232A4
Attorney, Agent or Firm:
KOJIMA Takashi et al. (JP)
Takashi Kojima (JP)
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