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:
Sep. 06, 2016
Filed:
Aug. 28, 2013
Basf Coatings Gmbh, Münster, DE;
Peter Hoffmann, Senden, DE;
Bernhard Steinmetz, Rütschenhausen, DE;
Jorn Lavalaye, Würzburg, DE;
Hardy Reuter, Münster, DE;
BASF Coatings GmbH, Munster, DE;
Abstract
Disclosed is a polymer which is prepared by reacting where R is a Cto Calkylene radical and n is selected accordingly such that said polyether has a number-average molecular weight of 450 to 2200 g/mol, components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7, and the resulting polymer has a number-average molecular weight of 1500 to 5000 g/mol and an acid number <10 mg KOH/g. Also disclosed is a pigmented aqueous basecoat material which comprises this polymer, and the use of said polymer in pigmented aqueous basecoat materials. It further relates to a method for producing multicoat paint systems, and also to the multicoat paint systems producible by means of said method. Moreover, the present invention relates to the refinish of defect areas on multicoat paint systems.