A pressure-sensitive adhesive composition is described, which comprises a polyester having an improved molecular structure and can find wide applications, which polyester has both a good mechanical strength and a good flexibility, is obtained from starting material components essentially comprising an aliphatic diol having a carbonate structure in the main chain thereof, and at least one of a polyhydric alcohol having three or more hydroxyl groups and a polycarboxylic acid having three or more carboxyl groups, and has a number average molecular weight of 5,000 or more and a degree of dispersion of 2.2 or more.
本文描述了一种压敏型粘合剂组合物,该组合物包含一种具有改良分子结构并可广泛应用的聚酯,这种聚酯具有良好的机械强度和柔韧性,由起始材料组分获得,起始材料组分主要包括主链中具有
碳酸盐结构的脂肪族二元醇,以及具有三个或三个以上羟基的多元醇和具有三个或三个以上羧基的聚
羧酸中的至少一种,其平均分子量为 5,000 或更大,分散度为 2.2 或更大。