ADHESIVE COMPOSITION, ADHESIVE LAYER, ADHESIVE SHEET, SURFACE PROTECTIVE SHEET, OPTICAL SURFACE-PROTECTIVE SHEET, AND OPTICAL FILM WITH SURFACE PROTECTIVE SHEET

摘要

An adhesive composition includes: 100 parts by mass of a polymer (A) having a glass transition temperature of less than 0°C; 0.05-3 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight of 1000 or more but less than 50000, and a glass transition temperature in the range of 30-300°C; and an organopolysiloxane compound (C) having polyoxyalkylene chains represented by general formulas (A)-(C). (In formula (C1): R1 represents a monovalent organic group; R2, R3, and R4 each represent an alkylene group; R5 represents a hydroxyl group or an organic group; m and n are integers in the range of 0-1000, with the caveat that m and n are never 0 simultaneously; and a and b are integers in the range of 0-1000, with the caveat that a and b are never 0 simultaneously.) (In formula (C2): R1 represents a monovalent organic group; R2, R3, and R4 each represent an alkylene group; R5 represents a hydroxyl group or an organic group; m is an integer in the range of 1-2000; and a and b are integers in the range of 0-1000, with the caveat that a and b are never 0 simultaneously.) (In formula (C3): R1 represents a monovalent organic group; R2, R3, and R4 each represent an alkylene group; R5 represents a hydroxyl group or an organic group; m is an integer in the range of 1-2000; and a and b are integers in the range of 0-1000, with the caveat that a and b are never 0 simultaneously.)