Title:
FINISHING METHOD FOR DYEING WITH CATIONICALLY MODIFIED REACTIVE DYE BY ONE-BATH PROCESS
Document Type and Number:
WIPO Patent Application WO/2019/214185
Kind Code:
A1
Abstract:
The present invention relates to a finishing method for dyeing with a cationically modified reactive dye by a one-bath process. A treatment liquid containing a cationic modifier and a reactive dye is arranged on a cellulose fiber fabric by a pad dyeing or dip dyeing process, and then soaping is performed to obtain a reactive dye dyed fabric. In the pad dyeing process, the cellulose fiber fabric is steamed, baked, or cold-rolled before being subjected to soaping. The molecular structure of the cationic modifier contains a reactive group and a positively charged group and has a number average molecular weight of 100 to 30000. The reactive group is one or a plurality of an epoxy group, s-triazine, pyridine, and an olefin, and the positively charged group comprises one or a plurality of a quaternary ammonium salt structure and an ammonium chloride structure. The method of the present invention combines cationic modification of a cotton fabric and fixation of a reactive dye into a single step, thereby shortening the process flow and improving the apparent color yield and the fixing rate of the fabric, and avoids the need to add an inorganic salt during the dyeing process, thereby avoiding environmental pollution.
Inventors:
YAN KELU (CN)
WANG LEI (CN)
WANG LEI (CN)
Application Number:
PCT/CN2018/113623
Publication Date:
November 14, 2019
Filing Date:
November 02, 2018
Export Citation:
Assignee:
UNIV DONGHUA (CN)
International Classes:
D06P3/66; D06P1/642; D06P1/645; D06P1/66; D06P1/38
Foreign References:
| CN106638036A | 2017-05-10 | |||
| CN101864676A | 2010-10-20 | |||
| CN102002868A | 2011-04-06 | |||
| CN103333332A | 2013-10-02 | |||
| CN104233866A | 2014-12-24 | |||
| CN106638035A | 2017-05-10 |
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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