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:
Jan. 13, 2026
Filed:
Jan. 17, 2022
Applicant:
Stahl International B.v., Waalwijk, NL;
Inventors:
Roberta Gamarino, Casale Monferrato, IT;
Guoqiang Qiang, Shanghai, CN;
Frédéric François Bert D'anvers, Waalwijk, NL;
Peter Danisch, Waalwijk, NL;
Assignee:
Stahl International B.V., Waalwijk, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C14C 9/02 (2006.01);
U.S. Cl.
CPC ...
C14C 9/02 (2013.01);
Abstract
The present invention relates to a novel composition for waterproofing leather, hides and/or pelts comprising a carboxyl-functional polysiloxane or an epoxide-functional polysiloxane and a polymer dispersion that contains 2 to 35 weight % of carboxylic groups, preferably a polyacrylate dispersion, to obtain leather that has a good water resistance according to ISO DIN EN ISO 5403-2 and DIN EN ISO 5403-1.