申请人:SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
公开号:US20150322187A1
公开(公告)日:2015-11-12
The present invention pertains to a process for manufacturing a solid composite layer, said process comprising the following steps: (i) providing a mixture comprising:—at least one functional fluoropolymer comprising at least one hydroxyl group [polymer (F)],—at least one metal compound of formula (I) [compound (M)]: X
4−m
AY
m
wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, and—at least one inorganic filler material [filler (I)] in an amount of from 50% to 95% by weight, with respect to the total weight of said polymer (F) and said filler (I); (ii) reacting at least a fraction of said hydroxyl group(s) of at least one polymer (F) with at least a fraction of said hydrolysable group(s) Y of at least one compound (M), so as to provide a fluoropolymer composition comprising at least one grafted fluoropolymer [polymer (Fg)] comprising pendant groups of formula —Y
m−1
—AX
4−m
wherein m, Y, A and X have the same meaning as defined above; and (iii) processing the fluoropolymer composition obtained in step (ii), so as to obtain a solid composite layer. The invention also pertains to the solid composite fluoropolymer layers obtained from said process and to uses of said solid composite fluoropolymer layers as separators in electrochemical devices.
本发明涉及一种制造固体复合层的工艺,该工艺包括以下步骤:(i)提供混合物,该混合物包括:至少一种具有至少一个羟基的功能性氟聚合物[聚合物(F)],至少一种式(I)的金属化合物[化合物(M)]: X4-mAYm,其中X是一个碳氢基团,可选地包含一个或多个功能基团,m是1到4的整数,A是从Si、Ti和Zr组成的金属,Y是从烷氧基、酰氧基和羟基组成的可水解基团,以及至少一种无机填料材料[填料(I)],其重量占聚合物(F)和填料(I)的总重量的50%至95%;(ii)反应至少一种聚合物(F)的至少一部分羟基与至少一种化合物(M)的至少一部分可水解基团Y,以提供至少一种接枝氟聚合物[聚合物(Fg)]的氟聚合物组合物,其包括式—Ym-1—AX4-m的挂链基团,其中m、Y、A和X的含义如上所定义;(iii)加工在步骤(ii)中获得的氟聚合物组合物,以获得固体复合层。本发明还涉及从该工艺获得的固体复合氟聚合物层以及将该固体复合氟聚合物层用作电化学设备中的隔离层的用途。