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. 02, 2003
Filed:
May. 01, 2000
Lloyd Mahlon Robeson, Macungie, PA (US);
Lori Anderson Vratsanos, Breinigsville, PA (US);
Susan Ann Miller, Orefield, PA (US);
Air Products Polymers, L.P., Allentown, PA (US);
Abstract
Water-borne paints having an ASTM 60° gloss value of at least 10 are formulated with a latex of a copolymer of vinyl acetate and ethylene or alkyl acrylate having a dry glass transition temperature (T ) below 20° C. and a latex of a polymer of vinyl acetate having a dry T above room temperature but a T when wet below 23° C. so that it is film-forming from the latex at room temperature. These paints are suitable for service as satin, semi-gloss or high gloss coatings but preferably are used as semi-gloss paints. The addition of the higher T polymer of vinyl acetate to the lower T copolymer provides a paint free with low to no volatile organic content but exhibiting improved blocking resistance without significant reduction in gloss.