Flame retardant organopolysiloxane composition

Abstract

Abstract 1. A COMPOSITION STABLE UNDER ANHYDROUS CONDITIONS AND CONVERTIBLE TO THE SOLID CURED ELASTIC STATE UPON EXPOSURE TO MOISTURE, AND WHICH IN A CURED STATE EXHIBITS IMPROVED FLAME-RETARDANT PROPERTIES, COMPRISING (A) A SUBSTANTIALLY LIQUID ORGANOPOLYSILOXANE HAVING A VISCOSITY OF FROM ABOUT 200 TO 500,000 CENTISTOKES AT 25* C., CONTAINING AN AVERAGE OF FROM 1.85 TO 2.02 OF SI--C BONDED ORGANIC GROUPS PER SILICON ATOM, CONTAINING 0.02 TO 2.0% SILICON-BONDED HYFROXYL OR SILICON-BONDED ALKOXY GROUPS, AND CONTAINING AT LEAST ABOUT 1.0% BY WEIGHT OF SILICON-BONDED MEMBER SELECTED FROM ARYL, ALKARYL, ARALKYL, AND HALOGENATED DERIVATIVES THEREOF; 8B) A MEMBER SELECTED FEOM THE GROUP OF: (1) ORGANOTRICYLOXYSILANE HAVING THE FORMULA: R"SI(OY)3; WHEREIN R" IS SELECTED FROM THE CLASS OF MONOVALENT HYDROCARBON RADICALS, HALOGENATED MONOVALENT HYDROCARBON RADICALS, AND ORGANOALKYL RADICALS, AND Y IS A SATURATED ALIPHATIC MONOACRYL RADICAL OF A CARBOXYLIC ACID; (2) A MONOMERIC ORGANOSILICATE HAVING THE FORMULA: R"''-O-SI(-O-R"'')2-R"" WHEREIN EACH R"'' INDIVIDUALLY IS A MEMBER SELECTED FROM THE CLASS OF ALIPHATIC HYDROCARBON GROUPS AND HALOGEN-SUBSTITUTED DERIVATIVES THEREOF AND R"" IS A MEMBER SELECTED FROM THE CLASS OF ALKYL, ARYL, ARALKYL, ALKARYL, ALKOXY, AND ARYLOXY GROUPS AND HALOGENATED DERIVATIVES OF THE AFORESAID ALKY, ARYL, ARALKYL, ALKARYL, ALKOXY, AND ARYLOXY GROUPS; AND (3) LIQUID PARTIAL HYDROLYSIS PRODUCTS OF THE MONOMERIC ORGANOSILICATE (2); AND (C) AN EFFECTIVE FLAME RETARDANT AMOUNT OF A PLATIUM CONTAINING MATERIAL.

Inventors

• 👤 R Smith
• 👤 B Karstedt

Bibliographic Details