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Patent Searching and Data


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.

Inventors:
AKAO Yuji (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
Application Number:
JP2017/002891
Publication Date:
August 03, 2017
Filing Date:
January 27, 2017
Export Citation:
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Assignee:
CITIZEN WATCH CO., LTD. (1-12, Tanashicho 6-chome Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
International Classes:
C14C3/06; D06P3/32; D06P5/00
Domestic Patent References:
WO2011061945A12011-05-26
WO2014112404A12014-07-24
Foreign References:
KR20120125032A2012-11-14
CN103374634A2013-10-30
JP2017039876A2017-02-23
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (Gotanda Yamazaki Bldg. 6F, 13-6 Nishigotanda 7-chome, Shinagawa-k, Tokyo 31, 〒1410031, JP)
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