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:
Feb. 23, 1999
Filed:
Oct. 25, 1996
Kurt Dahmen, Mochengladbach, DE;
Richard Mertens, Krefeld, DE;
Helmut Brehm, Krefeld, DE;
Horst Kilian, Krefeld, DE;
Jochen Houben, Tonisvorst, DE;
Thomas Muller, Dusseldorf, DE;
Stockhausen GmbH & Co. KG, Krefeld, DE;
Abstract
The present invention relates to alkoxy-groups-containing copolymers of a) 1 to 99%-wt. water soluble ethylenically unsaturated, acid-groups-containing monomers, b) 1 to 50%-wt. monomers having a polyalkoxy sequence and c) 0 to 60%-wt. water soluble monomers which are copolymerizable with a) and b); and to the use of said copolymers for retanning leathers previously tanned by a mineral or combined method. The leathers treated with the retanning agents according to the invention in particular stand out for an improved fullness and good grain tightness. The acid groups of monomers a) preferably are carboxyl groups.