Patent ID: 9550931
Date: 2017-01-24
CPC Classifications: C08G,C08K,C09J,H01L,Y10T

Claim:
1. A temporary adhesive material for a wafer comprising a first temporary adhesive layer of a silicone-containing polymer layer (A) containing a photo base generator and a second temporary adhesive layer of a silicone-containing polymer layer (B) which is laminated on the first temporary adhesive layer, does not contain the photo base generator, and is different from the polymer layer (A), wherein the polymer in the polymer layer (B) is a non-aromatic saturated hydrocarbon group-containing organopolysiloxane containing the following units (I) to (III): (I) a siloxane unit represented by R (II) a siloxane unit represented by R (III) a siloxane unit represented by R 10 to 40 mol % of the organic groups represent the same or different substituted or unsubstituted monovalent acyclic saturated hydrocarbon groups having 6 to 15 carbon atoms, and groups other than the cyclic and acyclic saturated hydrocarbon groups in all the organic groups represented by R