SOLVENT-FREE SILICONE RELEASE COMPOSITION, RELEASE SHEET, AND METHOD FOR PRODUCING RELEASE SHEET

WIPO Patent Application WO/2019/146518

A1

The present invention provides a solvent-free silicone release composition containing (A) an alkenyl group-containing organopolysiloxane having a vinyl value of 0.016-0.7 mol/100 g and a kinematic viscosity at 25°C of 80-500 mm2/s, (B) an organo hydrogen polysiloxane having a kinematic viscosity of 2-500 mm2/s, (C) a platinum group metal-based catalyst, and (E) an organopolysiloxane having a crosslinked structure and fluidity. According to the present invention, surface roughness caused by high speed rotation of a roll or surface protrusions and recesses caused by the generation of mist can be eliminated during high-speed coating on a sheet-like substrate, and a release sheet can be obtained in which a cured silicone-coated surface has excellent smoothness and an adhesive-coated substrate has a low high-speed peel strength.

IHARA TOSHIAKI (JP)
KOBAYASHI ATARU (JP)

PCT/JP2019/001428

August 01, 2019

January 18, 2019

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SHINETSU CHEMICAL CO (JP)

C09K3/00; B32B27/00; C08J5/18; C08K3/10; C08L83/04; C08L83/05; C08L83/07; C08L83/14; C09D7/63; C09D183/05; C09D183/07

WO2015198828A1	2015-12-30
WO2015198827A1	2015-12-30
WO2016006252A1	2016-01-14
WO2006070947A1	2006-07-06

JP2017002195A	2017-01-05
JP2006290919A	2006-10-26
JP2005343974A	2005-12-15
JP2010502778A	2010-01-28
JP2010535862A	2010-11-25
JP2012224780A	2012-11-15
JP2009292883A	2009-12-17
JP2003128925A	2003-05-08
JP2002356667A	2002-12-13
JPH08217980A	1996-08-27
JP2011132524A	2011-07-07
JP2020032072A	2020-03-05
JPS3513709B1
JPS54162787A	1979-12-24

See also references of EP 3744806A4

PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)

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