Title:
FORMALDEHYDE-FREE AND STRENGTH LOSS-FREE CREASE-RESISTANT FINISHING METHOD FOR COTTON FABRICS
Document Type and Number:
WIPO Patent Application WO/2021/164408
Kind Code:
A1
Abstract:
The present invention relates to the field of crease-resistant finishing of textiles. Disclosed is a formaldehyde-free and strength loss-free crease-resistant finishing method for cotton fabrics. A lipoic acid analogue containing both a disulfide bond (or sulfydryl) and carboxyl is used as a crease-resistant finishing agent for cotton fabrics in the present invention, and a formaldehyde-free and strength loss-free crease-resistant finishing method for cotton fabrics is established. The method comprises: firstly dipping scoured and bleached cotton fabrics in a dimethyl sulfoxide solution of the lipoic acid analogue, and completing an esterification reaction under the action of a dehydrating agent and a catalyst; and reducing a disulfide bond in the lipoic acid analogue into two sulfydryl groups by using a reducing agent, and finally oxidizing the sulfydryl groups into a disulfide bond under a certain tension to form a covalent cross-linked structure so as to obtain the durable crease-resistant cotton fabrics. The finished cotton fabrics are strength loss-free, excellent in crease resistance, and good in washable stability. The molecular structure of the lipoic acid analogue does not contain formaldehyde, so that the problems of formaldehyde release and the like do not exist in the processing process or using process, and the safety of the crease-resistant cotton fabrics is ensured.
Inventors:
WANG QIANG (CN)
HUANG CONG (CN)
YU YUANYUAN (CN)
WANG PING (CN)
ZHOU MAN (CN)
HUANG CONG (CN)
YU YUANYUAN (CN)
WANG PING (CN)
ZHOU MAN (CN)
Application Number:
PCT/CN2020/137849
Publication Date:
August 26, 2021
Filing Date:
December 21, 2020
Export Citation:
Assignee:
UNIV JIANGNAN (CN)
International Classes:
D06M13/248; D06M11/80; D06M101/06
Foreign References:
| CN111172752A | 2020-05-19 | |||
| CN101736575A | 2010-06-16 | |||
| CN109137499A | 2019-01-04 | |||
| KR102052921B1 | 2020-01-08 | |||
| CN108998970A | 2018-12-14 |
Other References:
JOE CHARBONNET ET AL.: "NEW APPROACHES IN COTTON CROSSLINKING", GREENER SOLUTIONS 2013, 31 December 2013 (2013-12-31), pages 1 - 71, XP055839374
Attorney, Agent or Firm:
HARBIN SHINEIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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