Sequential copolymers based on cyclic carbonates and esters
    7.
    发明授权
    Sequential copolymers based on cyclic carbonates and esters 失效
    基于环状碳酸酯和酯的顺序共聚物

    公开(公告)号:US4965300A

    公开(公告)日:1990-10-23

    申请号:US443041

    申请日:1989-11-27

    IPC分类号: C08G63/64 C08G64/00 C08G64/18

    CPC分类号: C08G64/18

    摘要: Polymers having a sequential structure of the following formula--A--X--B].sub.r (I)with r=1 to 20, in which --A-- is a polymer of a cyclic carbonate, --B-- is a polymer of a lactone and --X-- is a link, with a decreasing concentration of residues of the cyclic carbonate in the --B-- direction and a decreasing concentration of residues of the lactone in the --A-- direction, and the use of the these products as molding compositions.

    摘要翻译: 具有以下式的顺序结构的聚合物-AXB] r(I),其中r = 1至20,其中-A-是环状碳酸酯的聚合物,-B-是内酯的聚合物,-X-是 一个环节,环状碳酸酯在-B-方向的残留浓度降低,内酯残留在-A-方向上的浓度降低,以及这些产物用作模塑组合物。