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. 16, 1991
Filed:
Sep. 19, 1989
Dieter Engel, Kelsterbach, DE;
Josef Mondt, Konigstein/Taunus, DE;
Klaus Zimmerschied, Wiesbaden, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Aqueous dispersion for the production of crosslinkable surface coatings, containing, as the binder, a crosslinkable dispersion copolymer formed from olefinically unsaturated monomers and, if appropriate, further customary formulation constituents of lacquers, the dispersed particles of copolymer having average particle diameters from 0.5 to 10 .mu.m and the proportion in the dispersion copolymer of comonomer units carrying crosslinkable groups being greater than 10% by weight, relative to the dispersion copolymer. The preparation of the dispersion by emulsion or suspension copolymerization, in particular with the addition of free radical chain transfer substances, and also the use of the dispersion as a constituent of baking lacquers, hydrofillers, metallic paints and EPC paints. Also a process for the bake-coating of surfaces of solid substrates using the abovementioned aqueous dispersion, wherein the required amount of dispersion is applied to the surface to be coated and is dried at a temperature below its minimum film-forming temperature, and the dried coating is crosslinked by baking at a temperature above the glass transition temperature.