EXFOLIABLE, PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRODUCT Russian patent published in 2000 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is new exfoliable, pressure-sensitive adhesive composition comprising (a) block copolymer containing at least one unit of poly(monovinyl aromatic hydrocarbon) and at least one unit of poly(conjugated diene) containing at least 3 st % of vinyl, (b) up to 400 wt parts of solid resin which increases adhesiveness and (c) plasticizer. Block copolymer is cross linked through its vinyl groups by reaction with organohydropolysiloxane cross linking agent containing at least two hydrogen atoms directly bonded with silicon atom which has link wherein R is methyl or ethyl group, n is from 2 to 60, in the presence of cross-linking reaction catalyst, and plasticizer is present in amount from 1 to 50 wt parts per 100 wt parts of block copolymer. Exfoliable adhesive composition is useful in self-adhesive note books and also removable bands and labels. EFFECT: improved properties of the composition. 7 cl, 6 ex, 3 tbl