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. 29, 1989
Filed:
Sep. 14, 1988
Applicant:
Inventors:
G Dale Ernst, Minnetonka, MN (US);
Alan R Schuweiler, St. Paul, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524839 ; 528 49 ; 528 59 ;
Abstract
A crosslinked and chain extended urethane polymer coating with good performance properties typical of existing solvent borne solution coatings results from cure at ambient temperatures (e.g. 70.degree. F.). The aqueous system is a primary amine-terminated urethane oligomer in which no less than about 25% and no more than about 40% of the amine functionality is substituted by a salt of a volatile acid which aids dispersion of the oligomer. Minimal organic solvent is present, and as the acid evaporates the product lacquer dries.