Title:
PREPARATION METHOD FOR CATIONIC DYEABLE POLYESTER FIBER
Document Type and Number:
WIPO Patent Application WO/2019/047588
Kind Code:
A1
Abstract:
The present invention relates to a preparation method for a cationic dyeable polyester fiber. First, mixing dimethyl isophthalate-5-benzenesulfonate sodium, ethylene glycol and a catalyst for transesterification; after the completion of the transesterification, adding ethylene glycol, a complex ion regulator and sulfuric acid to adjust the mixture; mixing terephthalic acid, ethylene glycol, a catalyst and a flatting agent for esterification reaction; adding a product obtained by adjusting the mixture after the transesterification to a reaction system which reaches the end of the esterification reaction to carry out polycondensation to obtain a spinning melt; and subjecting the spinning melt to metering, extrusion, cooling, oiling, stretching, heat setting and winding to obtain the cationic dyeable polyester fiber. According to the present invention, impurities generated in a fiber production process are reduced, thereby reducing the pressure rise of a spinning assembly and a filter, prolonging the service cycle, reducing the production cost and further ensuring the continuity and safety of the whole production process. Therefore, the method has good economic value, and is suitable for popularization.
Inventors:
SU QI (CN)
CHAI SENGUANG (CN)
LIU BIAO (CN)
ZHANG AIMIN (CN)
CHAI SENGUANG (CN)
LIU BIAO (CN)
ZHANG AIMIN (CN)
Application Number:
PCT/CN2018/092315
Publication Date:
March 14, 2019
Filing Date:
June 22, 2018
Export Citation:
Assignee:
JIANGSU HENGKE ADVANCED MAT CO LTD (CN)
International Classes:
D01F6/92; C08G63/46
Foreign References:
| CN107604463A | 2018-01-19 | |||
| CN107557902A | 2018-01-09 | |||
| CN101570596A | 2009-11-04 | |||
| CN101020743A | 2007-08-22 | |||
| CN102277651A | 2011-12-14 | |||
| JP2005206760A | 2005-08-04 | |||
| CN101891937A | 2010-11-24 | |||
| KR20140093059A | 2014-07-25 |
Attorney, Agent or Firm:
TONGSHE INTELLECUTUAL PROPERTY AGENCY (CN)
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