An adhesive obtained by compounding a cross-linking agent to an acrylic resin composition comprising a silane-based compound and the following acrylic resins (1) and (2), wherein the content of acrylic resin (1) is 10 to 50 parts by weight based on 100 parts by weight of the total amount of the acrylic resin (1) and acrylic resin (2); acrylic resin (1): an acrylic resin having a molecular weight of 50,000 to 500,000 and containing a structural unit derived from a monomer (a) (structural unit (a)); acrylic resin (2): an acrylic resin having a molecular weight of 1,000,000 to 1,500,000 and a molecular weight distribution (Mw/Mn) of 5 or less, and containing the structural unit (a) as the main component and a structural unit derived from a monomer (b) (structural unit (b));
(a): a (meth)acrylate of the formula (A)
(b): a monomer containing one olefinic double bond and at least one polar functional group selected from the group consisting of a carboxyl group, hydroxyl group, amide group, amino group, epoxy group, oxetanyl group, aldehyde group and isocyanate group in the molecule.
一种通过将
交联剂与
丙烯酸树脂组合物复合而获得的粘合剂,该
丙烯酸树脂组合物包括
硅烷基化合物和以下
丙烯酸树脂(1)和(2),其中
丙烯酸树脂(1)的含量以
丙烯酸树脂(1)和
丙烯酸树脂(2)总量的 100 重量份计为 10 至 50 重量份;
丙烯酸树脂(1):
丙烯酸树脂 (2):分子量为 1,000,000 至 1,500,000 且分子量分布 (Mw/Mn) 为 5 或以下的
丙烯酸树脂,包含作为主要成分的结构单元 (a) 和衍生自单体 (b) 的结构单元 (结构单元 (b));
(a) 式(A)的(
甲基)
丙烯酸酯
(b): 分子中含有一个
烯烃双键和至少一个极性官能团的单体,该极性官能团选 自羧基、羟基、
酰胺基、
氨基、环
氧基、
氧杂
环丁烷基、醛基和
异氰酸酯基。