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    • 7. 发明公开
    • 실온 경화 실리콘 고무 조성물
    • 室温可固化硅橡胶组合物
    • KR1020020063827A
    • 2002-08-05
    • KR1020020005135
    • 2002-01-29
    • 다우 코닝 도레이 캄파니 리미티드
    • 모리모토히로토키오카베카쯔토시아다치히로시
    • C08L77/04
    • C08K9/04C08G77/18C08G77/20C08K3/36C08L83/04C08L83/14Y10S528/901C08L83/00
    • PURPOSE: Provided is a nonsagging and extrudable room temperature curable silicone rubber composition that exhibits an excellent and robust adherence to a variety of substrates when the composition is cured while in contact with the substrate. CONSTITUTION: The room temperature curable silicone rubber composition comprises (A) 100 weight parts of diorganopolysiloxane comprising (a-1) 20 to 100 weight-% based on the total weight of (a-1) and (a-2) of a diorganopolysiloxane described by general formula(1), where R1 and R2 represent alkyl or alkoxyalkyl; R3 is selected from the group consisting of monovalent hydrocarbyl, halogenated hydrocarbyl, and cyanoalkyl; a is 0 or 1; Y is selected from the group consisting of oxygen atom, and divalent hydrocarbon group; and n is a positive number that produces a viscosity at 25 deg.C of from 20 to 1,000,000 mPa.s and (a-2) 80 to 0 weight% based on the total weight of (a-1) and (a-2) of a diorganopolysiloxane described by general formula(2), where R1, R2, and R3 are defined as above, R4 is alkyl or alkenyl, and Y, a, and n are defined as above; (B) 1 to 20 weight parts of surface-hydrophobicized dry method silica; (C) 1 to 20 weight parts of non-surface-hydrophobicized dry method silica; (D) 1 to 25 weight parts of alkoxysilane described by general formula:R5bSi(OR6)4-b, where R5 represents monovalent hydrocarbyl, R6 is alkyl or alkoxyalkyl, and b is 0 or 1, or the partial hydrolysis and condensation product thereof; (E) 0.5 to 10 weight parts of organotitanium compound; and (F) 0.01 to 5 weight parts of light stabilizer and/or ultraviolet absorber.
    • 目的:提供一种不分散和可挤出的室温可固化硅橡胶组合物,当组合物在与基材接触时固化时,其表现出对各种基材的优异且牢固的粘附性。 构成:室温可固化硅橡胶组合物包含(A)100重量份的二有机聚硅氧烷,其包含(a-1)基于(a-1)和(a-2)二有机聚硅氧烷的总重量为20-100重量% 由通式(1)表示,其中R 1和R 2表示烷基或烷氧基烷基; R3选自一价烃基,卤代烃基和氰基烷基; a是0或1; Y选自氧原子和二价烃基; n为正数,其在25℃下的粘度为20〜1,000,000mPa.s,(a-2)为80〜0重量%,基于(a-1)和(a-2)的总重量 )由通式(2)表示的二有机聚硅氧烷,其中R1,R2和R3如上定义,R4是烷基或烯基,Y,a和n如上所定义; (B)1〜20重量份表面疏水化干法二氧化硅; (C)1〜20重量份非表面疏水化干法二氧化硅; (D)1〜25重量份通式R5bSi(OR6)4-b所示的烷氧基硅烷,其中R5表示一价烃基,R6表示烷基或烷氧基烷基,b表示0或1,或部分水解缩合产物 ; (E)0.5〜10重量份有机钛化合物; 和(F)0.01〜5重量份的光稳定剂和/或紫外线吸收剂。