PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE SHEET

原文（中国語）

A pressure-sensitive adhesive composition includes: a (meth)acrylic resin, photopolymerization initiator, and crosslinking agent, wherein the (meth)acrylic resin is a diblock copolymer of an X block and a Y block at a molar ratio from 40:60 to 95:5; the X block includes: structural unit (M-1) having a hydroxy, and structural unit (M-2) having an ethylenically unsaturated group; the Y block includes: structural unit (M-3) derived from ethylenically unsaturated compound (m-3) having an SP value of 20 (J/cm)or less; at least one of structural units (M-1) to (M-3) is derived from a (meth)acryloyloxy group; a total amount of structural units (M-1) and (M-2) included in the X block is 18 to 95 mol % relative to all structural units in the X block; and a total amount of structural units (M-1) and (M-2) included in the Y block is 0 to 17 mol % relative to all structural units in the Y block.