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:
Aug. 26, 2014
Filed:
Apr. 23, 2012
Wei Zhang, Ambler, PA (US);
Ozzie M. Pressley, Cheltenham, PA (US);
Monica A. Luckenbach, Woxall, PA (US);
James C. Bohling, Lansdale, PA (US);
Wei Zhang, Ambler, PA (US);
Ozzie M. Pressley, Cheltenham, PA (US);
Monica A. Luckenbach, Woxall, PA (US);
James C. Bohling, Lansdale, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention provides one component aqueous compositions comprising (i) from 0.01 to 7 wt. %, based on the total weight of solids in the composition, of anion exchange resin beads having a weight average particle size of from 0.1 to 20 μm a low crosslinker content, the anion exchange resin copolymer beads being chosen from gelular beads, beads having a dual morphology, and mixtures thereof, (ii) an emulsion copolymer having a copolymerization residue of one or more phosphorus acid monomer, and having an anionic surfactant or its polymerization residue and a reductant or its polymerization residue and, (iii) at least one phosphorous containing surfactant in the amount of from 0.1 to 5 wt. %, based on the weight of emulsion copolymer solids. The compositions find use as coating binders and either pigmented or unpigmented paints and enable the provision of a single coat primer plus topcoat with excellent stain blocking.