IDiyas

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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.:

US 8790416 B1

PDFFull Text
Date of Patent:
Jul. 29, 2014

Filed:

Oct. 05, 2011

Non-metal tanning process

Applicants:

Claus Reineking, Waldenbuch, DE;

Roberta Gamarino, Casale Monferrato, IT;

Licia Trimarco, Saronno, IT;

Maurizio Quaglierini, Chianni, IT;

Markus Gisler, Rheinfelden, CH;

Rainer Nusser, Neuenburg, DE;

Inventors:

Claus Reineking, Waldenbuch, DE;

Roberta Gamarino, Casale Monferrato, IT;

Licia Trimarco, Saronno, IT;

Maurizio Quaglierini, Chianni, IT;

Markus Gisler, Rheinfelden, CH;

Rainer Nusser, Neuenburg, DE;

Assignee:

Stahl International B.V., Waalwijk, NL;

Attorneys:

Peacock Myers, P.C.

Jeffrey D. Myers

Primary Examiner:

Eisa Elhilo

Int. Cl.
CPC ...
C14C 3/26 (2006.01); C14C 3/00 (2006.01); C14C 3/02 (2006.01); C14C 3/04 (2006.01); C14C 3/08 (2006.01); C07D 251/44 (2006.01); C07D 253/00 (2006.01); C07D 253/07 (2006.01); C07D 253/075 (2006.01);
U.S. Cl.
CPC ...
C14C 3/00 (2013.01); C14C 3/02 (2013.01); C14C 3/04 (2013.01); C14C 3/08 (2013.01); C14C 3/26 (2013.01); C07D 251/44 (2013.01); C07D 253/00 (2013.01); C07D 253/07 (2013.01); C07D 253/075 (2013.01);
Abstract

Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least one compound of a formula (I), wherein X signifies fluorine or chlorine, and/or (NR), wherein R is a substituted or unsubstituted Cto Calkyl group, a substituted or unsubstituted Cto Caryl or a Cto Cheteroaryl group, R1 signifies hydrogen, C-alkyl or an alkyleneoxy radical of a formula (Ia), —(—Calkylene-O—)—H (Ia), R2 signifies hydrogen, hydroxyl, C-alkyl or C-alkoxy, m, signifies 1 or 2, n signifies 0 to 2, q is of from 1 to 10, M signifies hydrogen or an alkali metal cation or an ammonium cation, the ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step, wherein the bated hide or skin or pelt is subjected to tanning with (A) without previous pickling.

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