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:
Apr. 01, 1986
Filed:
Nov. 07, 1983
Willibald Paar, Graz, AT;
Helmut Honig, Graz, AT;
Vianova Kunstharz, A.G., Werndorf, AT;
Abstract
Cationic epoxy resin esters suitable as binders for stoving coating compositions, particularly for application by electrodeposition, and as mill base resins for grinding pigments and extenders; and a process for producing same is described. The resin esters are produced through reaction of a resinous compound carrying at least two 1,2-epoxy groups with carboxylic acids and, optionally, with primary and/or secondary alkyl- and/or alkanolamines. The carboxylic acid employed, totally or partially, is the reaction product of a dicarboxylic acid anhydride and a tertiary amine which has the structure - ##STR1## wherein R and R.sub.x are a hydrogen atom or an alkyl radical or an aryl radical which may be substituted, R.sub.7 is an alkyl radical, an amino-alkyl radical having the primary amino groups, if present, blocked (as a ketimine) or the moiety remaining after the reaction with an active hydrogen atom of an acrylic or methacrylic monomer monofunctional with regard to the double bond, and wherein n is 2 or 3, the quantity of basic component being chosen in order that the epoxy-free final product has an amine value of at least 35, and preferably of from 40 to 140 mg KOH/g.