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US 12,319,764 B2Granted
Flexible PVDF polymers
AssigneeSolvay Specialty Polymers Italy S.P.A.
InventorsSégolène Brusseau, Julio A. Abusleme, Giambattista Besana
Life of this patent
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Abstract
The present invention pertains to vinylidene fluoride copolymers having improved flexibility, said copolymers comprising recurring units derived from hydrophilic (meth)acrylic monomers and from perhalogenated monomers, to a process for the manufacture of said copolymers, and to their use in applications where outstanding flexibility is required.
Claims16
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):
- 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.
5 more elements
Dependencies are inferred from the claim text.