Elastomeric organopolysiloxane compositions containing unsaturated alkoxy silanes

Claim 1

A COMPOSITION CURABLE AT TEMPERATURES IN THE RANGE OF BETGWEEN 80*C. TO 650*C. COMPRISING BY WEIGHT (1) 100 PARTS OF AN ORGANOPOLYSILOXANE POLYMER HAVING A VISCOSITY OF AT LEAST 100,000 CENTIPOISES AT 25*C. OF THE FORMULA, (R)A-SI-O(4-A/2) (2) 10 TO 300 PARTS OF A FILLER SELECTED FROM THE CLASS CONSISTING OF REINFORCING FILLERS, SEMI-REINFORCING FILLERS, AND MIXTURES THEREOF, AND (3) 0.1 TO 5 PARTS OF AN OLEFINICALLY UNSATURATED ORGANOSILANE OF THE FORMULA, R''-SI(-(R")B)-(X)C WHERE R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF MONOVALENT HYDROCARBON RADICALS, HALOGENATED MONOVALENT HYDROCARBON RADICALS, AND CYANOALKYL RADICALS, R'' IS AN OLEFINICALLY UNSATURATED MONOVALENT HYDROCARBON RADICAL, R" IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, AND MONOVALENT HYDROCARBON RADICALS FREE OF OLEFINIC UNSATURATION, X IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF ALKOXY RADICALS, ALKOXYALKOXY RADICALS, ALKOXYARYLOXY RADICALS, AND ACYLOXY RADICALS, A IS EQUAL TO 1.95 TO 2.01 INCLUSIVE, B IS A WHOLE NUMBER EQUAL TO 0 TO 2 INCLUSIVE, C IS AN INTGEGER EQUAL TO FROM 1 TO 3 INCLUSIVE, AND THE SUM OF B AND C IS EQUAL TO 3.