申请人:ASAHI GLASS COMPANY LTD.
公开号:EP0845483A1
公开(公告)日:1998-06-03
A fluorine-containing copolymer comprising (a) polymer units based on a fluoroolefin, (b) polymer units based on a cyclic monomer having, on its ring, an unsaturated group copolymerizable with the fluoroolefin, (c) polymer units based on an ethylenically unsaturated compound having a curable moiety but having neither an ester bond nor an ether bond, and optionally (d) polymer units based on at least one olefin selected from ethylene, propylene and isobutylene, or polymer units based on a vinyl ether having an aliphatic ring, in such proportions that, based on the total amount of polymer units (a), (b), (c) and (d), polymer units (a) are from 35 to 65 mol%, polymer units (b) are from 5 to 45 mol%, polymer units (c) are from 1 to 30 mol% and polymer units (d) are from 0 to 40 mol%, which has a number average molecular weight within a range of from 2,000 to 100,000, as calculated as polystyrene by gel permeation chromatograph, and which has rings based on said cyclic monomer, on the main chain of the copolymer.
一种含氟共聚物,包括(a)基于氟烯烃的聚合物单元,(b)基于环状单体的聚合物单元,该环状单体的环上有可与氟烯烃共聚的不饱和基团、(c) 以具有可固化分子但既无酯键也无醚键的乙烯基不饱和化合物为基础的聚合物单 元,以及 (d) 以至少一种选自乙烯、丙烯和异丁烯的烯烃为基础的聚合物单元,或以具有脂族环 的乙烯基醚为基础的聚合物单元、在聚合物单元(a)、(b)、(c)和(d)的总量中,聚合物单元(a)的比例为 35 至 65 摩尔%,聚合物单元(b)的比例为 5 至 45 摩尔%,聚合物单元(c)的比例为 1 至 30 摩尔%,聚合物单元(d)的比例为 0 至 40 摩尔%、根据凝胶渗透色谱法计算,该共聚物的平均分子量在 2,000 至 100,000 之间,并且在共聚物的主链上具有基于所述环状单体的环。