Title:
HEAVY RELEASE ADDITIVE FOR RELEASE SHEET, POLYORGANOSILOXANE COMPOSITION FOR RELEASE SHEET, AND RELEASE SHEET
Document Type and Number:
WIPO Patent Application WO/2013/176044
Kind Code:
A1
Abstract:
The present invention relates to a heavy release additive for a release sheet, which comprises a condensation reaction product produced by the dehydrative condensation reaction between (A) a polydiorganosiloxane that has an average polymerization degree of 500 to 10,000 and has at least one hydroxy or hydrolysable group per molecule and (B) a polyorganosiloxane resin that is mainly composed of a (SiO4/2) unit and a (R3SiO1/2) unit (wherein R's independently represent a C1-12 monovalent hydrocarbon group or a C2-6 alkenyl group each having no aliphatic unsaturated bond), has a ratio of the content of the (R3SiO1/2) unit to the content of the (SiO4/2) unit of 0.6 to 1.2 by mole, and contains the hydroxy group and the hydrolysable group in the total content of 2.1 mass% or more and less than 10.0 mass%. When the heavy release additive for a release sheet according to the present invention is added to a polyorganosiloxane composition for a release sheet, the heavy release additive can have the effect of achieving an extremely great peel force compared with cases in which no additive is added.
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Inventors:
IHARA TOSHIAKI (JP)
AOKI SHUNJI (JP)
IRIFUNE SHINJI (JP)
AOKI SHUNJI (JP)
IRIFUNE SHINJI (JP)
Application Number:
PCT/JP2013/063752
Publication Date:
November 28, 2013
Filing Date:
May 17, 2013
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C09K3/00; C08G77/44; C08L83/05; C08L83/07; C08L83/10
Foreign References:
JP2007523225A | 2007-08-16 | |||
JP2010037557A | 2010-02-18 | |||
JP2007106908A | 2007-04-26 | |||
JPS5729676A | 1982-02-17 | |||
JPS4927033B1 | 1974-07-13 | |||
JPH10245540A | 1998-09-14 | |||
JP2005509046A | 2005-04-07 | |||
JP2000086893A | 2000-03-28 | |||
JPH10110156A | 1998-04-28 | |||
JPH1161094A | 1999-03-05 | |||
JPS5984953A | 1984-05-16 | |||
JPH0553183B2 | 1993-08-09 | |||
JP2750896B2 | 1998-05-13 | |||
JP2742835B2 | 1998-04-22 | |||
JPH0686582B2 | 1994-11-02 | |||
JPH10110156A | 1998-04-28 | |||
JP2010037557A | 2010-02-18 |
Other References:
See also references of EP 2857475A4
Attorney, Agent or Firm:
KOJIMA Takashi et al. (JP)
Takashi Kojima (JP)
Takashi Kojima (JP)
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