Patent ID: 6730737
Filing Date: 2004-05-04
Classification: C08F,C08L,C09J

Abstract:
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 solid tackifying resin, and (c) a plasticizer, wherein the block copolymer has been crosslinked without the use of a curing accelerator through its vinyl groups by means of a reaction, in the presence of a crosslinking catalyst, with an organohydrogenpolysiloxane crosslinking agent which contains at least two hydrogen atoms which are directly bonded to a silicon atom, and wherein the plasticizer is present in an amount of from 1 to 50 parts by weight per 100 parts by weight of the block copolymer.