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    • 14. 发明授权
    • Flame retardant organopolysiloxane composition
    • 阻燃剂有机硅氧烷组合物
    • US3840492A
    • 1974-10-08
    • US22529372
    • 1972-02-10
    • GEN ELECTRIC
    • SMITH RKARSTEDT B
    • C08L83/00C08K13/02C08L83/04C08G51/04
    • C08K13/02Y10S528/901C08L83/04
    • 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.