US 12,110,383 B2
Crosslinkable blends of VDF copolymers
Julio A. Abusleme, Saronno (IT); and Ségolène Brusseau, Tavaux (FR)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Appl. No. 17/264,956
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
PCT Filed Aug. 7, 2019, PCT No. PCT/EP2019/071221
§ 371(c)(1), (2) Date Feb. 1, 2021,
PCT Pub. No. WO2020/030694, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 18306092 (EP), filed on Aug. 9, 2018.
Prior Publication US 2022/0363885 A1, Nov. 17, 2022
Int. Cl. C08L 27/16 (2006.01); B29C 71/02 (2006.01); C08J 3/24 (2006.01)
CPC C08L 27/16 (2013.01) [B29C 71/02 (2013.01); C08J 3/246 (2013.01); C08J 2327/16 (2013.01); C08J 2427/16 (2013.01); C08L 2205/025 (2013.01); C08L 2312/00 (2013.01)] 15 Claims
 
1. A crosslinkable composition (C) comprising:
A) at least one fluoropolymer [polymer (FA)] comprising:
(i) recurring units derived from vinylidene fluoride (VDF) monomer;
(ii) recurring units derived from at least one hydroxyl group-containing vinyl monomer (HA),
wherein the total amount of recurring units (ii) in said polymer (FA) is of at most 10.0% by moles, with respect to the total moles of recurring units of polymer (FA); said polymer (FA) being characterized by a fraction of randomly distributed units (HA) of at least 40%; and
B) at least one a fluoropolymer [polymer (FB)], different from polymer (FA), comprising:
(i) recurring units derived from vinylidene fluoride (VDF) monomer;
(iii) recurring units derived from at least one carboxyl group-containing vinyl monomer (CA);
wherein the total amount of recurring units (iii) in said polymer (FB) is of at most 10.0% by moles, with respect to the total moles of recurring units of polymer (FB); said polymer (FB) being characterized by a fraction of randomly distributed units (CA) of at least 40%; and
further comprising at least one acidic crosslinking catalyst.