黏着剂组成物;ADHESIVE COMPOSITION

摘要

本发明系提供一种黏着剂组成物，系可抑制调制后的黏着剂组成物之黏度变化、且可以长时间低黏度使用；及提供一种黏着剂片，系于将此黏着剂组成物形成片状之后，至可无问题地进行裁切等加工为止之必要的固化时间短、且加工性优异。又提供附黏着剂之光学膜，系将上述黏着剂片使用在光学膜而成者，亦提供将此附黏着剂之光学膜贴合在以液晶单元为代表例的玻璃基板而成之光学积层体。;本发明之黏着剂组成物系含有丙烯酸树脂(A)、交联剂(B)、有机酸盐(C)及有机酸(D)，该丙烯酸树脂(A)系含有下式(I)(式中，R 1 表示氢原子或甲基、R 2 表示碳数14以下的烷基)表示的(甲基)丙烯酸酯(A-1)的单体之聚合物；并将该黏着剂组成物形成片状成为黏着剂片。;The present invention provides an adhesive composition with limited variation in viscosity, the adhesive composition being useful for a long period of time at low viscosity; after forming this adhesive composition into a sheet, the adhesive composition is capable of shortening the solidifying time for carrying out the cutting process and has a good processing characteristic. This invention also provide an optical film having the adhesive and an optical laminating body consisted of the optical film having the adhesive attached to a glass substrate (LC unit). ;The adhesive composition comprises acrylic resin (A), a cross-linking agent (B), organic acid slat (C) and organic acid (D). The acrylic resin (A) is a polymer composed by monomers containing a (meth)acrylate (A-1) represented by the formula (I) as follows, wherein R 1 represents hydrogen atom or methyl group and R 2 represents an alkyl group having a carbon number equal to or lower than 14. The adhesive composition can be formed into an adhesive sheet.