US 12,319,764 B2
Flexible PVDF polymers
Ségolène Brusseau, Tavaux (FR); Julio A. Abusleme, Saronno (IT); and Giambattista Besana, Mariano Comense (IT)
Assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
Appl. No. 16/762,911
Filed by SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate (IT)
PCT Filed Nov. 21, 2018, PCT No. PCT/EP2018/082108
§ 371(c)(1), (2) Date May 8, 2020,
PCT Pub. No. WO2019/101806, PCT Pub. Date May 31, 2019.
Claims priority of application No. 17306633 (EP), filed on Nov. 24, 2017.
Prior Publication US 2021/0171681 A1, Jun. 10, 2021
Int. Cl. C08F 214/22 (2006.01); B29C 43/00 (2006.01); B29C 43/18 (2006.01); B29C 48/08 (2019.01); H01M 50/406 (2021.01); H01M 50/42 (2021.01); H01M 50/426 (2021.01); B29K 27/00 (2006.01)
CPC C08F 214/225 (2013.01) [H01M 50/406 (2021.01); H01M 50/42 (2021.01); H01M 50/426 (2021.01); B29C 43/18 (2013.01); B29C 48/08 (2019.02); B29K 2027/16 (2013.01); C08F 2500/17 (2013.01); C08F 2500/26 (2013.01)] 16 Claims
 
1. A semi-crystalline fluoropolymer (polymer (F)) comprising:
recurring units derived from vinylidene fluoride (VDF),
recurring units derived from at least one hydrophilic (meth) acrylic monomer (MA) of formula (I):

OG Complex Work Unit Chemistry
R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and
ROH is a hydrogen atom,
in an amount of from 0.2% to 1.0% by moles with respect to the total amount of moles of recurring units in said polymer (F); and
recurring units derived from at least one perhalogenated monomer (FM) in an amount of from 1.5% to 5.0% by moles with respect to the total amount of moles of recurring units in said polymer (F),
said polymer (F) having an intrinsic viscosity greater than 0.38 l/g measured in dimethylformamide at a concentration of 0.2 g/dl and at 25° C.