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    • 8. 发明授权
    • Silicone rubber compositions and method for making
    • 硅橡胶组合物及其制造方法
    • US5498660A
    • 1996-03-12
    • US360094
    • 1994-12-20
    • Masaharu TakahashiManabu Narumi
    • Masaharu TakahashiManabu Narumi
    • C08L83/05C08K5/5419C08L83/04C08L83/07C08K5/04
    • C08K5/5419C08L83/04C08G77/12C08G77/20
    • To a silicone rubber composition including (A) a diorganopolysiloxane having an aliphatic unsaturated hydrocarbon group, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, and (C) a platinum catalyst, is added (D) an organic silicon compound of the following general formula (2): ##STR1## wherein R.sup.2, R.sup.5, and R.sup.6 are independently selected from monovalent hydrocarbon groups free of an aliphatic unsaturated bond, R.sup.3 is a monovalent hydrocarbon group, R.sup.4 is hydrogen or methyl, and n is an integer of 0 to 3. The composition has a long pot life after addition of curing components (B) and (C) and is extrusion moldable into bubble-free transparent parts. The composition is prepared by mixing component (A) with components (B) and (C) while adding component (D) thereto.
    • 对于包含(A)具有脂族不饱和烃基的二有机聚硅氧烷,(B)分子中具有至少两个SiH基的有机氢聚硅氧烷和(C)铂催化剂)的硅橡胶组合物,(D)有机硅化合物 (2)其中R 2,R 5和R 6独立地选自不含脂族不饱和键的一价烃基,R 3是一价烃基,R 4是氢或甲基,和 n为0〜3的整数。该组合物在添加固化成分(B)和(C)后具有长的适用期,并且可挤出成型为无气泡透明部分。 通过将组分(A)与组分(B)和(C)混合同时向其中加入组分(D)来制备组合物。