Patent ID: 6218006
Filing Date: 2001-04-17
Classification: C09J,Y10T

Abstract:
A pressure-sensitive adhesive composition, comprising a polymer having a polycarbonate structure having a repeating unit represented by the following formula: ##STR7##wherein R represents a straight chain or branched hydrocarbon group having from 2 to 20 carbon atoms;wherein said polymer is a polyester having a weight average molecular weight of at least 10,000 synthesized from diol components indispensably containing polycarbonate diol and dicarboxylic acid components indispensably containing a dicarboxylic acid having an aliphatic hydrocarbon group of from 2 to 20 carbon atoms or an alicyclic hydrocarbon group in its molecular structure;and the storage elastic modulus (G') at room temperature is at least 2.times.10.sup.6 dyne/cm.sup.2 and at -30.degree. C. is 3.times.10.sup.7 dyne/cm.sup.2 or lower and the adhesive strength at room temperature is at least 1 kg/20 mm width.