Silicone pressure-sensitive adhesive composition containing functionalized polyisobutylene
    1.
    发明专利
    Silicone pressure-sensitive adhesive composition containing functionalized polyisobutylene 审中-公开
    含有官能化聚异丁烯的硅胶压敏粘合剂组合物

    公开(公告)号:JPH11279520A

    公开(公告)日:1999-10-12

    申请号:JP2472499

    申请日:1999-02-02

    摘要: PROBLEM TO BE SOLVED: To provide a silicone pressure-sensitive adhesive compsn. which has biocompatibility with animal skins, drug permeability, etc., and has a low ten dency of cold flow by compounding a silicate resin, a polyorganosiloxane fluid, and a functionalized polyisobutylene polymer. SOLUTION: This pressure-sensitive adhesive compsn. comprises (A) a silicate resin, (B) a polyorganosiloxane fluid, and (C) a polyisobutylene polymer having at least one functionalized silicon-contg. moiety and exhibits tackiness and adhesiveness upon applying pressure thereto. The sum of ingredients A and B occupies about 75-99 wt.% of the compsn.; and ingredient C, about 1-25 wt.%. The wt. ratio of A:B is about (40:60)-(70:30). The functionalized polyisobutylene polymer may have a silanol group arranged along the polymer chain or at its one or both molecular ends. For example, the compsn. is a reaction product obtd. by heating a mixture of the three ingredients in the presence of a silanol condensation catalyst.

    摘要翻译: 要解决的问题:提供一种硅氧烷压敏粘合剂。 其具有与动物皮肤的生物相容性,药物渗透性等,并且通过混合硅酸盐树脂,聚有机硅氧烷流体和官能化的聚异丁烯聚合物,具有低的冷流速度。 解决方案:该压敏粘合剂组成。 包括(A)硅酸酯树脂,(B)聚有机硅氧烷流体和(C)具有至少一个官能化硅 - 阻聚物的聚异丁烯聚合物。 并且在施加压力时显示粘性和粘合性。 成分A和B的总和占组合物的约75-99重量%。 和成分C,约1-25重量%。 重量 A:B的比例约为(40:60) - (70:30)。 官能化的聚异丁烯聚合物可以具有沿着聚合物链排列的硅烷醇基团或其一个或两个分子末端。 例如,compsn。 是反应产物。 通过在硅烷醇缩合催化剂的存在下加热三种成分的混合物。