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:
Jun. 05, 2001
Filed:
Jan. 19, 1999
Gary P. Craun, Berea, OH (US);
Kenneth G. Hahn, Hinckley, OH (US);
The Glidden Company, Cleveland, OH (US);
Abstract
The invention pertains to an aqueous acrylic copolymer thickener particularly useful for thickening latex paints, the thickener copolymer comprising aqueous copolymerized ethylenically unsaturated monomers comprising between 10% and 90% carboxyl functional monomer, between 1% and 50% long alkyl ester of acrylate or methacrylate, and preferably between 20% and 90% methyl or ethyl acrylate or methacrylate. The mixture of monomers is mixed with water and surfactant, micronized to droplet size less than 5 microns, copolymerized to form a carboxyl functional copolymer, which is then neutralized with amine to form a thickener copolymer.