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:
Dec. 15, 2015
Filed:
Sep. 11, 2009
Anton G. El A'mma, Perkiomenville, PA (US);
Robert W. Grich, North Wales, PA (US);
Joseph M. Hoefler, Bensalem, PA (US);
Kelley L. Klein, Reading, PA (US);
Jill A. Ottinger, Roslyn, PA (US);
Anton G. El A'mma, Perkiomenville, PA (US);
Robert W. Grich, North Wales, PA (US);
Joseph M. Hoefler, Bensalem, PA (US);
Kelley L. Klein, Reading, PA (US);
Jill A. Ottinger, Roslyn, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.