CURABLE ORGANOPOLYSILOXANE COMPOSITION, A USE THEREOF, AND A LAMINATE PREPARED FROM THE COMPOSITION
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United States of America Patent
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Feb 8, 2018
app pub date -
Mar 5, 2015
filing date -
Mar 5, 2015
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Abstract
A curable organopolysiloxane composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in each molecule; (B) an organohydrogenpolysiloxane in an amount sufficient to provide a value of 1.1:1 to 20:1 (SiH:alkenyl group) for the molar ratio of silicon-bonded hydrogen atoms in the organohydrogenpolysiloxane to the alkenyl groups in component (A), wherein component (B) consists of the following components (B1) and (B2) at a mass ratio of (B1)/(B2) in the range from 100/0 to 15/85: (B1) an organohydrogenpolysiloxane having at least three silicon-bonded hydrogen atoms in each molecule and a silicon-bonded hydrogen content [Si—H] mass % satisfying the following equation: 0<[Si—H] mass %<5/(DP)0.5 wherein the DP is in the range from 5 to 1000; (B2) an organohydrogenpolysiloxane having at least one silicon-bonded hydrogen atom in each molecule, which is different from the component (B1); and (C) a hydrosilation reaction catalyst in a catalytic amount.
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