US 11,274,226 B2 · Fluoropolymer solution for forming a fluoropolymer coating

Abstract

The present disclosure relates to solutions for forming a fluoropolymer coatings, comprising: i) an organic solvent, and dissolved therein ii) a fluoropolymer comprising repeat units arising from specific fluoroolefin, alkyl or aryl vinyl ether and alkenyl silane monomers. The present fluoropolymer solutions have long shelf stability life, minimal to no formation of insoluble residue or gel over the period between their manufacture and use, are of a viscosity that allows for facile filtration and so are substantially free from undesirable submicron size particles, have a dissolved polymer content such that the solutions are of utility in commercial single-coat coating processes, and afford fluoropolymer coatings on substrates that have excellent adhesion to the substrate during use and over the lifetime of the electronic device.

Claims14

Dependent claims

A solution for forming a fluoropolymer coating comprising:

i) an organic solvent, and dissolved therein
ii) a fluoropolymer comprising repeat units arising from monomers:
(a) tetrafluoroethylene;
(b) alkyl vinyl ether wherein the alkyl group is a C1 to C6 straight chain saturated hydrocarbon radical;
and
(c) alkenyl silane of the formula SiR1R2R3R4, wherein R1 is an ethylenically unsaturated hydrocarbon radical, R2 is a branched C3-C6 alkoxy radical, and R3 and R4 are independently selected from linear or branched C1-C6 alkoxy radical;
wherein said solution has a phase stable shelf-life such that it remains a liquid and does not gel at ambient temperature for a time period of at least 3 months.

4 more elements

Dependencies are inferred from the claim text.

Fluoropolymer solution for forming a fluoropolymer coating

Life of this patent

Fluoropolymer solution for forming a fluoropolymer coating

Life of this patent

Abstract

Claims14