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:
Jul. 24, 2001
Filed:
Mar. 07, 2000
Douglas Ronald Chambers, Hunterville, NC (US);
Mario Pschaidt, Charlotte, NC (US);
Allen T. Slocki, Charlotte, NC (US);
David LeBlanc, Charlotte, NC (US);
Tanya T. Ward, Mt. Holly, NC (US);
Brian S. Carpenter, Stanly, NC (US);
Vianova Resins, Inc., Charlotte, NC (US);
Abstract
The present invention is directed to two- and three- component aqueous polyurethane composition which are cured at ambient temperature and have excellent chemical resistance without reduction in abrasion resistance and flexibility. The two component system comprises a first component of a hydroxy functional aqueous polyurethane dispersion and phenoxy resin blended together, and a second component of polyisocyanate. The three component system comprises a first component of a hydroxy functional aqueous polyurethane dispersion, a second component of epoxy resin; and a third component of polyisocyanate. Generally, the mass of the epoxy or phenoxy resins is 1 to 50% of mass of the polyurethane solids in the dispersion and the mass of the polyisocyanate is 50 to 200% of the mass of the polyurethane solids in the dispersion. The two or three component polyurethane composition has a mass fraction of solids of preferably 10-50%.