Title:
METHOD FOR PRODUCING REPTILE LEATHER OR LEATHER PRODUCT USING HEXAVALENT CHROMIUM TREATMENT AGENT, AND REPTILE LEATHER OR LEATHER PRODUCT USING HEXAVALENT CHROMIUM TREATMENT AGENT
Document Type and Number:
WIPO Patent Application WO/2017/131140
Kind Code:
A1
Abstract:
[Problem] To provide a method for producing reptile leather in which leather can be treated using a hexavalent chromium treatment agent in the process for producing leather, without changing the appearance of the leather.
[Solution] The method for producing reptile leather of the present invention includes a chromium tanning step in which chromium tanning is performed on the skin of a reptile to obtain leather, a dyeing/fatliquoring step in which chromium-tanned leather is simultaneously subjected to dyeing and fatliquoring, and a finishing step in which the dyed and fatliquored leather is finished. This method for producing reptile leather further includes a hexavalent chromium treatment step in which leather that has been subjected to chromium tanning in the chromium tanning step has a hexavalent chromium reducing compound, that reduces hexavalent chromium to trivalent chromium, adhered to the tanned leather before the leather is supplied to the finishing step.
More Like This:
JPS63125600 | TANNING METHOD |
Inventors:
AKAO YUJI (JP)
Application Number:
PCT/JP2017/002891
Publication Date:
August 03, 2017
Filing Date:
January 27, 2017
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
International Classes:
C14C3/06; D06P3/32; D06P5/00
Domestic Patent References:
WO2011061945A1 | 2011-05-26 | |||
WO2014112404A1 | 2014-07-24 |
Foreign References:
KR20120125032A | 2012-11-14 | |||
CN103374634A | 2013-10-30 | |||
JP2017039876A | 2017-02-23 |
Other References:
See also references of EP 3409795A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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