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. 16, 2005
Filed:
Apr. 09, 2003
Matthew Stewart Gebhart, New Britain, PA (US);
Deborah Gay Fradkin, Horsham, PA (US);
Bonnie Elizabeth Baker, Erdenheim, PA (US);
John Michael Friel, Warminster, PA (US);
Steven Scott Edwards, Horsham, PA (US);
Caren Ann Puschak, Norristown, PA (US);
Cindy Eckert, Collegeville, PA (US);
Ralph Craig Even, Blue Bell, PA (US);
Matthew Stewart Gebhart, New Britain, PA (US);
Deborah Gay Fradkin, Horsham, PA (US);
Bonnie Elizabeth Baker, Erdenheim, PA (US);
John Michael Friel, Warminster, PA (US);
Steven Scott Edwards, Horsham, PA (US);
Caren Ann Puschak, Norristown, PA (US);
Cindy Eckert, Collegeville, PA (US);
Ralph Craig Even, Blue Bell, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
An aqueous polymer blend composition including a predominant amount of soft polymer particles and a minor amount of hard polymer particles is provided. The soft polymer particles contain, as copolymerized units, 70 to 99.7% by weight monoethylenically unsaturated (meth)acrylic monomer and from 0.3 to 10% by weight monoethylenically unsaturated acid monomer, based on weight of soft polymer particles. The soft polymer particles are made by a select process including redox polymerization or polymerization in the presence of excess unreacted monomer. The aqueous polymer blend composition is useful for preparing dry coatings having improved dirt pickup resistance and acceptable scrub resistance. A method is provided for preparing a dry coating from the aqueous polymer blend composition.