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Patent Searching and Data


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.

Inventors:
IHARA TOSHIAKI (JP)
AOKI SHUNJI (JP)
IRIFUNE SHINJI (JP)
Application Number:
PCT/JP2013/063752
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
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 2857475A4
Attorney, Agent or Firm:
KOJIMA Takashi et al. (JP)
Takashi Kojima (JP)
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