Invention Grant
- Patent Title: Method of preparing a curable polyorganosiloxane composition
- Patent Title (中): 制备可固化聚有机硅氧烷组合物的方法
-
Application No.: US14524036Application Date: 2014-10-27
-
Publication No.: US09303164B2Publication Date: 2016-04-05
- Inventor: Masanori Takanashi
- Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
- Applicant Address: JP Tokyo
- Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
- Current Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP2010-231383 20101014
- Main IPC: C08G77/12
- IPC: C08G77/12 ; C08L83/04 ; H01L23/29 ; C09J183/04 ; B05D3/02 ; C09D183/04 ; C08G77/20 ; C08G77/00

Abstract:
A method of preparing a curable polyorganosiloxane composition including kneading a uniform mixture of an alkenyl group-containing polyorganosiloxane, a polyorganohydrogensiloxane, and a platinum group metal compound, and defoaming the kneaded mixture under reduced pressure, the alkenyl group-containing polyorganosiloxane includes a linear polyorganosiloxane of the formula (I): R is R1 or R2, and at least two Rs are R1; R1 is C2-C6 alkenyl; R2 is C1-C6 alkyl; and n is a value that yields a viscosity at 23° C. of 10 to 10,000 cPs, a branched polyorganosiloxane containing SiO4/2 and R′3SiO1/2 units, optionally a R′2SiO and/or a R′SiO3/2, R′ represents a monovalent aliphatic or alicyclic, and at least three R′ groups per molecule are alkenyls, the alkenyl group-containing polyorganosiloxane having a weight ratio of the branched to linear polyorganosiloxane of 1 to 5; and a number of hydrogens bonded to a silicon atom of the polyorganohydrogensiloxane exceeds 2.
Public/Granted literature
- US20150045487A1 METHOD OF PREPARING A CURABLE POLYORGANOSILOXANE COMPOSITION Public/Granted day:2015-02-12
Information query