Title:
DEGRADABLE POLYESTER FIBER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/134498
Kind Code:
A1
Abstract:
A degradable polyester fiber and preparation method therefor. The preparation method comprises: according to an FDY process, preparing modified polyester FDY yarns from a modified polyester melt system to obtain degradable polyester fibers. A molecular chain of the modified polyester comprises a terephthalic acid segment, an ethylene glycol segment, a 2,5,6,6-tetramethyl-2,5-heptanediol segment, and a fluorine-containing dibasic acid segment, the fluorine-containing dibasic acid being 2,2-difluoro-1,3-malonic acid, 2,2-difluoro-1,4-succinic acid, 2,2-difluoro-1,5-glutaric acid, or 2,2,3,3-tetrafluoro-1,4-succinic acid; and doped and modified ZrO2 powder is dispersed in the modified polyester. The intrinsic viscosity of the prepared product is decreased by 23-28% after being placed under the conditions of 25°C and 65% relative humidity for 60 months. The preparation method has the advantages of low cost, simple process, fast natural degradation rate of the prepared product, and good application prospect.
Inventors:
ZHANG YUANHUA (CN)
DING ZHUJUN (CN)
WANG LILI (CN)
DING ZHUJUN (CN)
WANG LILI (CN)
Application Number:
PCT/CN2019/113873
Publication Date:
July 02, 2020
Filing Date:
October 29, 2019
Export Citation:
Assignee:
JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)
International Classes:
D01F6/92; C08G63/682; C08G63/86; D01F1/10
Foreign References:
| CN106801265A | 2017-06-06 | |||
| CN106367835A | 2017-02-01 | |||
| CN1119836A | 1996-04-03 | |||
| CN1247181A | 2000-03-15 | |||
| CN109722740A | 2019-05-07 | |||
| US20120322714A1 | 2012-12-20 |
Other References:
See also references of EP 3842577A4
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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