Title:
ONE-STEP SPUN ELASTIC COMPOSITE FILAMENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/114277
Kind Code:
A1
Abstract:
The present invention relates to a one-step spun elastic composite filament and preparation method therefor. Two modified polyesters having different viscosities are melted, metered, subjected to ·compounding extrusion, cooled, oiled, stretched, heat-set and wound respectively to prepare a one-step spun elastic composite filament. Each of molecular chains of the two modified polyesters having different viscosities comprises a terephthalic acid chain segment, an ethanediol chain segment, and a branched diol chain segment. The structural formula of branched diol is as illustrated in the following formula (1), wherein R1 and R2 are independently selected from straight chain alkylene groups having 1-3 carbon atoms, R3 is selected from alkyl groups having 1-5 carbon atoms, and R4 is selected from alkyl groups having 2-5 carbon atoms. The elastic shrinkage of the prepared one-step spun elastic composite filament is higher than or equal to 35%. The method of the present invention is simple and reasonable, and the prepared one-step spun elastic composite filament features the advantages of having high elasticity while being capable of maintaining dimensional stability, having good extensibility, etc., and thus has a great popularization value.
Inventors:
FAN HONGWEI (CN)
JIN GUANFAN (CN)
CHEN MING (CN)
REN HUAILIN (CN)
WANG YONGFENG (CN)
WANG XIANGMING (CN)
JIN GUANFAN (CN)
CHEN MING (CN)
REN HUAILIN (CN)
WANG YONGFENG (CN)
WANG XIANGMING (CN)
Application Number:
PCT/CN2018/097501
Publication Date:
June 20, 2019
Filing Date:
July 27, 2018
Export Citation:
Assignee:
JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)
International Classes:
D01F6/84; C08G63/78; C08G63/83
Foreign References:
| CN108048939A | 2018-05-18 | |||
| CN104141178A | 2014-11-12 | |||
| CN105155034A | 2015-12-16 | |||
| CN106381558A | 2017-02-08 | |||
| CN106283250A | 2017-01-04 | |||
| CN106350889A | 2017-01-25 |
Other References:
See also references of EP 3683339A4
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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