The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
Jul. 05, 2018
Arkema France, Colombes, FR;
Leo Mario Saija, Bagnolo in Piano, IT;
Mario Lugli, Fabbrico, IT;
Flippo Finetti, Parma, IT;
Umberto Amadei, Commessaggio, IT;
Arkema France, Puteaux, FR;
Abstract
The invention relates to aqueous polymer dispersions stable for at least 12 h, when dissolved in high amount of organic solvents and acidified at low pH (pH<2). The polymer comprises units and/or groups issued from: a) at least one (meth)acrylic monomer which is (meth)acrylic ester of a C1-C12 alcohol without any other functional group than (meth)acrylate, b) at least monomer b1) or initiator b2) or both as defined: b1) at least one vinylic, allylic or (meth)acrylic monomer, bearing an anionic group derived from strong acids with pKa<3, b2) at least one initiator, bearing the same anionic group as b1), c) at least one hydroxy-functional vinylic, allylic or (meth)acrylic monomer, and optional monomers, and which polymer bears: the anionic groups as defined in b) in an amount of at least 0.05 meq/g and hydroxy groups as defined in c) in an amount of at least 0.1 meq/g.