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CN101945950A 含硅氧烷的成膜组合物 无效 - 撤回

含硅氧烷的成膜组合物
摘要：
本发明涉及能在基底上形成粘合剂膜的含硅氧烷的组合物，所述组合物典型地包含可固化的硅氧烷制剂，所述制剂含有：(a)每一分子具有至少两个SiVi基的聚有机基硅氧烷聚合物，每一SiVi基含有直接键合到硅原子上的链烯基官能团；(b)每一分子具有至少三个与硅键合的氢基或SiH基的交联剂聚有机基硅氧烷化合物，(c)扩链剂化合物，所述扩链剂化合物是具有SiH端基的遥爪聚有机基硅氧烷，(d)SiH基与SiVi基反应的氢化硅烷化催化剂，(e)RHV＞1.5，其中RHV是在(b)和(c)内的SiH的摩尔数与在(a)和(d)内的SiVi的摩尔数之比，和0＜RHC＜0.7，其中RHC是在(c)内的SiH的摩尔数与在(b)和(c)内的SiH的摩尔数之比。这一制剂可快速固化并可提供粘合性与发粘性之间良好的平衡。
摘要（英）：

The invention relates to silicone containing compositions able to form adhesive films on substrates, which typically comprises a curable silicone formulation containing: (a) a polyorganosiloxane polymer having at least two functional SiVi groups per molecule, each SiVi group containing an alkenyl functionality directly bonded to a silicon atom; (b) a crosslinker polyorganosiloxane compound having at least 3 Si-bonded hydrogen groups or SiH groups per molecule; (c) a chain extender compound which is a telechelic polyorganosiloxane having terminal SiH groups; (d) a hydrosilylation catalyst for the reaction of SiH groups with SiVi groups; (e) with RHV > 1.5 wherein RHV is the ratio of the number of SiH moles in (b) and (c) to the number of SiVi moles in (a) and (d), and 0 < RHC < 0.7 wherein RHC is the ratio of the number of SiH moles in (c) to the number of SiH moles in (b) and (c). Such formulation can cure quickly and can provide good balance between adhesion and tack.

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