| abstract |
An object of the present invention is to provide a heavy-peeling additive for a release sheet, an organic polysiloxane composition having an addition reaction type, and a release sheet which is capable of obtaining a heavy peeling force by a heavy release additive, and which does not deteriorate hardenability. It can be hardened at a low temperature, and the residual adhesion rate of the peeled adhesive sheet is reduced to a small excellent release film.nThe solution is a heavy-peeling additive for a release sheet comprising an acrylic-polyoxy-based graft copolymer having a weight average molecular weight of 30,000 to 2,000,000, and the acrylic-polyoxy-based graft copolymer is (A) a radically polymerizable monomer having a radical polymerizable group and (B) a radical polymerizable monomer having a propylene fluorenyl group and/or a methacryl fluorenyl group; wherein the component (A) The organopolysiloxane compound (A1) having one radical polymerizable group in one molecule, and the component (B) is a radical polymerization having two or more radical polymerizable groups in one molecule. Sex monomer (B2). |