E.i. Dupont De Nemours and Company

The Chemours Company Fc, LLC

Timothy Edward Hopkins

Ying Wang

Sheng Peng

Stephen James Getty

Peter Michael Murphy

Robert Clayton Wheland

Gerald Oronde Brown

Stephen Ernest Jacobson

Ralph Birchard Lloyd

Melea Rena Langley

Xudong Chen

Ernest Byron Wysong

Michael Henry Ober

Justine Gabrielle Franchina

Andrew Hen Liu

Murat Unlu

Jack Christopher Brady

Douglas Glenn Ewart

Mark Robert Mckeever

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.

Fluoropolymer solution for forming a fluoropolymer coating

A solvent-based non-aqueous fluorinated methacrylate polymer comprising repeating units in any sequence from (1) at least one fluorinated methacrylate, and (2) at least one non-fluorinated alkyl acrylate and (3) at least one non-fluorinated hydroxyalkyl methacrylate,

Non-aqueous composition comprising partially fluorinated methacrylic polymers

A polymer having at least one urea linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I):R(CHCF)(CHCH)(R)&#x2014;XH&#x2003;&#x2003;Formula (I)wherein 

Fluoropolymer compositions and treated substrates

A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by 

Polyfluoroether based polymers

Fluororpolymer compositions and treated substrates

A method for imparting resistance to staining to a substrate comprising contacting the substrate with a copolymer comprising the monomers of Formula wherein

Copolymers for stain resistance

A composition comprising a self-emulsifiable or self-dispersible aqueous solution or dispersion of at least one urea linkage-containing alkoxypolyoxyalkylene fluorocarbamate prepared by contacting (a) at least one polyisocyanate which contains at least three isocyanate groups per molecule, (b) at least one fluorochemical reagent of the formula F(CF2)aCH2CH2OH, wherein a is 4, 6, or 8, or mixtures thereof, provided that a is a maximum of 50% of 8, and (c) at least one hydrophilic, water-solvatable reagent which contains per molecule a single functional group which has at least one reactive Zerewitinoff hydrogen atom, and thereafter with (d) water, the equivalent weight of the polyisocyanate and the reagents (b) and (c) being such that the reagents react with 55% to 95% of the isocyanate groups, and water reacts with all of the remaining isocyanate groups, the composition imparting durable hydrophilicity and stain release properties to a substrate treated therewith is disclosed.

Hydrophilic stain release agents

Perfluoroether based polymers

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Wilmington, DE, United States of America

Timothy Edward Hopkins