CURABLE ORGANOPOLYSILOXANE COMPOSITION, SHEET-LIKE ARTICLE HAVING A CURED LAYER FORMED FROM SAID COMPOSITION, AND LAMINATE
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United States of America Patent
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Oct 8, 2015
app pub date -
Oct 9, 2013
filing date -
Oct 9, 2012
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Abstract
A curable organopolysiloxane composition comprising: (A) at least one type of gum-like or liquid organopolysiloxane having a viscosity of not less than 20 mPa·s, a content of the vinyl(CH2═CH—) part of higher alkenyl groups being in a range of 2.0 to 5.0% by mass; (B) an organopolysiloxane resin formed essentially from R13SiO1/2 units and SiO4/2 units, a molar ratio of the R13SiO1/2 units to the SiO4/2 units being from 0.5 to 2.0 and a content of the vinyl(CH2═CH—) part of alkenyl groups being less than 1.0% by mass; (C) an organohydrogenpolysiloxane; (D) a hydrosilylation reaction catalyst; and, optionally, (E) an organic solvent. In such a composition, a mass ratio of the component (A) to the component (B) is in a range of 2/8 to 8/2.
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