The purpose of the present invention is to obtain a biodegradable laminate obtained by laminating a polyvinyl alcohol resin layer on at least one surface of an aliphatic polyester resin layer via an adhesive layer, wherein the biodegradable laminate has excellent biodegradability, gas barrier performance, and interlayer adhesiveness. The biodegradable laminate of the present invention is characterized in that the primary component of the adhesive layer is a polyester resin (A') having polar groups, which is obtained by graft polymerization of an α, β-unsaturated carboxylic acid or anhydride thereof on a biodegradable polyester resin (A) having predetermined structural units.
本发明的目的是获得一种可
生物降解层压板,该层压板通过粘合剂层将聚
乙烯醇树脂层层压在脂肪族聚酯
树脂层的至少一个表面上,其中可
生物降解层压板具有优异的
生物降解性、气体阻隔性能和层间粘合性。本发明的可
生物降解层压板的特征在于,粘合剂层的主要成分是具有极性基团的聚酯
树脂(A'),它是通过在具有预定结构单元的可
生物降解聚酯
树脂(A)上接枝聚合α,β-不饱和
羧酸或其酸酐而得到的。