An ultraviolet-curable pressure-sensitive silicone adhesive composition which comprises: 100 parts of an organopolysiloxane (A) having, in the molecule, two groups represented by general formula (1)
(wherein R1 represents a C1-20 monovalent hydrocarbon group, R2 represents an oxygen atom, etc., R3 represents an acryloyloxyalkyl group, etc., p and a respectively indicate numbers satisfying 0≤p≤10 and 1≤a≤3); 1-500 parts of a monofunctional (meth)acrylate compound (B) containing no siloxane structure and/or a polyfunctional (meth)acrylate compound (C) containing no siloxane structure; 1-5,000 parts of an oranopolysiloxane resin (D) comprising R43SiO1/2 units (a) (wherein R4 represents a C1-10 monovalent hydrocarbon group) and SiO4/2 units (b), the (a)/(b) molar ratio being (0.6-1.2)/1; and 0.01-20 parts of a photopolymerization initiator (E). This composition has satisfactory applicability and curability and gives a cured object which, when used as a temporary fixer, has excellent tackiness and strength.
一种紫外线固化压敏型
硅胶粘合剂组合物,它包括100 份的有机聚
硅氧烷(A),其分子中有两个由通式(1)表示的基团
(其中 R1 代表 C1-20 单价烃基,R2 代表氧原子等,R3 代表
丙烯酰氧基烷基等、p 和 a 分别表示满足 0≤p≤10 和 1≤a≤3 的数字);1-500 份不含
硅氧烷结构的单官能度(甲基)
丙烯酸酯化合物 (B) 和/或不含
硅氧烷结构的多官能度(甲基)
丙烯酸酯化合物 (C);1-5,000 份包含 R43SiO1/2 单元(a)(其中 R4 代表 C1-10 单价烃基)和 SiO4/2 单元(b)的兰聚
硅氧烷树脂 (D),(a)/(b)摩尔比为 (0.6-1.2)/1;以及 0.01-20 份的光聚合
引发剂(E)。这种组合物具有令人满意的适用性和固化性,其固化物在用作临时固定剂时,具有极佳的粘性和强度。