TRANSPARENT LIQUID SILICONE RUBBER COMPOSITION

Title:

TRANSPARENT LIQUID SILICONE RUBBER COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2018/055896

Kind Code:

A1

Abstract:

The present invention provides a transparent liquid silicone rubber composition that does not contain an inorganic filler and includes the following as main components: (A) a silicone resin having, as essential structural units, an R3SiO1/2 unit (M unit) and a SiO4/2 unit (Q unit)( R is a monovalent hydrocarbon group containing 1-6 carbon atoms, and at least 2 R's in a molecule are alkenyl groups); (B) a straight-chain or branched organopolysiloxane containing, in a molecule, 2 or more alkenyl groups bonded to silicon atoms; (C) an organohydrogenpolysiloxane containing, in a molecule, 2 or more hydrogen atoms bonded to silicon atoms; (D) an organopolysiloxane which is liquid at room temperature, having a weight-average molecular weight of 37,000 or less and containing, in a molecule, one or more hydroxyl groups bonded to silicon atoms; and (E) a hydrosilylation reaction catalyst. The present invention is a highly transparent, hydrosilylation-curable liquid silicone rubber composition, wherein the hardness and high transparency are sufficiently retained and the mold releasability is excellent.

Inventors:

MURAMATSU HIRONOBU (JP)
SHUDO SHIGEKI (JP)

Application Number:

PCT/JP2017/026247

Publication Date:

March 29, 2018

Filing Date:

July 20, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SHINETSU CHEMICAL CO (JP)

International Classes:

C08L83/07; C08L83/04; C08L83/05; C08L83/06; G02B1/04

Foreign References:

JP2016084419A	2016-05-19
JP2006342200A	2006-12-21
JP2008163060A	2008-07-17
JP2009091449A	2009-04-30
JP2007246894A	2007-09-27
JP2000235103A	2000-08-29
JP2000231002A	2000-08-22
JPH08134358A	1996-05-28

Other References: