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, 1986
Filed:
Dec. 07, 1984
Klaus Nachtkamp, Cologne, DE;
Jurgen Schwindt, Leverkusen, DE;
Karl-Ludwig Noble, Cologne, DE;
Hans-Georg Stahl, Oldenburg, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
The present invention is directed to aqueous stoving lacquers containing pigments or fillers wherein the binders are based on combinations of (a) polyurethane prepolymers containing partly or completely neutralized carboxyl groups and blocked isocyanate groups and (b) polyurethane prepolymers containing free hydroxyl groups and partly or completely neutralized carboxyl groups. The binder components are further characterized by polyester and polyether segments, each being present in amounts of greater than 10% by weight. The present invention is also directed to films and coatings prepared from these aqueous stoving lacquers.