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    • 2. 发明授权
    • Silicone self-adhesives comprising modified organopolysiloxanes and
self-adhesive tapes
    • 包含改性有机聚硅氧烷和自粘胶带的硅氧烷自粘合剂
    • US5216069A
    • 1993-06-01
    • US632608
    • 1990-12-27
    • Takahide Kobori
    • Takahide Kobori
    • C09J183/04
    • C09J183/04Y10T428/31663
    • A silicone self-adhesive comprising an organopolysiloxane obtained by partial condensation of from 40 to 80 parts by weight of a diorganopolysiloxane containing at least an alkenyl group and a aryl group and correspondingly from 60 to 20 parts by weight of a copolymer which consists essentially of SiO.sub.2 units and R'.sub.3 SiO.sub.0.5 units, in which each R' represents a monovalent hydrocarbon group having not larger than 3 carbon atoms, at a mixing ratio by mole of from 1:0.3 to 1:1.5 and which has at least one hydroxyl group directly bonded to a silicon atom in the molecule, and an organohydrogenpolysiloxane used in an amount sufficient to give from 1 to 30 Si-H bonds per one vinyl group of the above ingredient. A catalytically effective amount of a platinum catalyst is added to the above self-adhesive. An self-adhesive tape or sheet using the above self-adhesive is also provided.
    • 一种硅氧烷自粘合剂,其包含通过部分缩合40-80重量份至少含有烯基和芳基的二有机聚硅氧烷获得的有机聚硅氧烷,相应地,60至20重量份基本上由SiO 2组成的共聚物 单元和R'3SiO0.5单元,其中每个R'表示不大于3个碳原子的一价烃基,其混合比为1:0.3至1:1.5,并且具有至少一个羟基 直接键合到分子中的硅原子,和有机氢聚硅氧烷的用量足以使上述成分每一个乙烯基产生1至30个Si-H键。 向上述自粘合剂中加入催化有效量的铂催化剂。 还提供了使用上述自粘合剂的自粘胶带或片材。