Title:
ULTRA-LOW SHRINKAGE POLYESTER INDUSTRIAL YARN AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/113955
Kind Code:
A1
Abstract:
The present invention relates to an ultra-low shrinkage polyester industrial yarn and a preparation method thereof. The ultra-low shrinkage polyester industrial yarn is prepared by spinning a polyester after subjecting the polyester to dissolution, washing and solid-phase tackifying. The ultra-low shrinkage polyester industrial yarn has a dry heat shrinkage rate of 1.8 ± 0.25% under test conditions of 177°C, 10 min, and 0.05 cN/dtex. A mixture of an ethylene glycol magnesium and an ethylene glycol antimony is used as a polycondensation catalyst. The mixture has a very small thermal degradation coefficient. The invention reduces oligomers during polymerization, reduces thermal degradation during processing, greatly reduces impurities in the polyester, and lowers nucleating agent content in the polyester, leading to a reduction in heterogeneous nucleation and a corresponding increase in the probability of homogeneous nucleation. The dissolution and washing further decreases oligomer content, facilitating grain growth and optimizing crystalline perfection in the ultra-low shrinkage polyester industrial yarn fiber. The ultra-low shrinkage polyester industrial yarn has characteristics of relatively low dry heat shrinkage and improved dimensional stability, and can therefore be widely used in fabric filters, coated fabrics, hoses, conveyor belt wefts, and the like.
Inventors:
ZHAO HUIRONG (CN)
FAN XIAOBING (CN)
YANG CHAOMING (CN)
WANG LIJUN (CN)
FAN XIAOBING (CN)
YANG CHAOMING (CN)
WANG LIJUN (CN)
Application Number:
PCT/CN2016/103176
Publication Date:
July 06, 2017
Filing Date:
October 25, 2016
Export Citation:
Assignee:
JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)
International Classes:
C08G63/183; C08G63/83; C25B3/13; D01F6/62
Domestic Patent References:
| WO2013025062A2 | 2013-02-21 |
Foreign References:
| CN105646858A | 2016-06-08 | |||
| CN105504244A | 2016-04-20 | |||
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| CN104499081A | 2015-04-08 | |||
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Other References:
See also references of EP 3348595A4
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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