C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 153/02 (2006.01) C08F 8/00 (2006.01) C08F 8/42 (2006.01) C09J 7/04 (2006.01)
Patent
CA 2139075
A releasable pressure sensitive adhesive composition comprising: (a) a block copolymer comprising at least one poly(monovinyl aromatic hydrocarbon) block and at least one poly(conjugated diene) block and having a vinyl content of at least 3% by weight, (b) a tackifying resin, and (c) a plasticizer, wherein the block copolymer has been cross-linked through its vinyl groups by means of a reaction with an organohydrogenpolysiloxane crosslinking agent containing at least two hydrogen atoms being directly bonded to a silicon atom in the presence of a crosslinking catalyst and wherein the plasticizer is present in an amount of from 1 to 50 parts by weight per 100 parts by weight of block copolymer. The releasable adhesive composition can be suitably applied in removable self-adhering memo notes and in removable tapes and labels.
de Keyzer Noel Raymond Maurice
Vermunicht Geert Emiel Anna
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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