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:
Oct. 15, 1991
Filed:
Sep. 06, 1988
Willibald Paar, Graz, AT;
Rudolf Schipfer, Graz, AT;
Vianova Kunstharz, A.G., Werndorf, AT;
Abstract
Cationic paint binders based on the reaction products of epoxide compounds with substituted carbamic acid derivatives and the use thereof in the formulation of cathodically deposited paints are described. The carbamic acid derivatives are urethanes, ureas, allophanates, and biuret compounds. Crosslinking functionality and/or protonatable groups are introduced by a suitable selection of blocking agents for the isocyanate compounds utilized. The reaction between the epoxide compounds and carbamic acid derivatives takes place in the presence of basic groups under relatively mild conditions; and, even when several carbamic acid moieties are present in a molecule, a readily soluble product is obtained.