ADHESIVE MATERIAL, ADHESIVE SHEET, AND USE OF THE ADHESIVE SHEET

摘要

To provide an adherence substance which has a low viscosity and good coatability, can be made solvent free, has good adhesion to an adherend and at the same time has excellent removability, can suppress peel electrostatic charge and is excellent in high speed peeling performance. An adherence substance which is obtainable by curing a curable composition comprising a silyl group-containing polymer (S) represented by the following formula (1):
in the formula (1), R 1 represents a t-valent residue obtained by removing all hydroxy groups from a compound having t pieces of hydroxy groups in the molecule; R 2 represents a bivalent organic group; R 3 represents a monovalent organic group having from 1 to 20 carbon atoms; X is a hydroxy group or a hydrolyzable group; Y represents a bivalent group represented by the following formula (A) or a bivalent group represented by the following formula (B); a represents an integer of from 1 to 3; r represents an integer of from 1 to 1,000; t represents an integer of from 1 to 8;
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-OR 5 -€ƒ€ƒ€ƒ€ƒ€ƒ(B)
in the formula (A), R 4 represents an alkylene group having from 2 to 8 carbon atoms; and in the formula (B), R 5 represents an alkylene group having from 2 to 4 carbon atoms.