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Patent Searching and Data


Title:
METHOD FOR PREPARING WATER-REPELLENT POLYESTER FIBERS
Document Type and Number:
WIPO Patent Application WO/2022/099980
Kind Code:
A1
Abstract:
The present invention belongs to the field of polyester fibers, and particularly relates to a method for preparing water-repellent polyester fibers. The method comprises the following steps: step 1. subjecting ethylene glycol and a pentaerythritol ester to a hydrolysis reaction to obtain a water-repellent dibasic acid ester; step 2. subjecting the water-repellent dibasic acid ester and a prepolymer ester to a transesterification reaction to prepare a water-repellent polyester polymer; and step 3. subjecting the water-repellent polyester polymer to melt spinning to obtain the water-repellent polyester fibers. The present invention fills the gap in the non-halogen flame-retardant field, and the water-repellent polyester polymer produced by means of the transesterification of the water-repellent dibasic acid ester and the prepolymer ester has the characteristics of a good reaction stability and an excellent product water repellency.

Inventors:
SHEN SHUNHUA (CN)
ZHANG JINGDONG (CN)
Application Number:
PCT/CN2021/084436
Publication Date:
May 19, 2022
Filing Date:
March 31, 2021
Export Citation:
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Assignee:
ZHEJIANG HUILONG NEW MAT CO LTD (CN)
International Classes:
C08G63/127; D01F6/84; C08G63/84; C08G63/85; C08G63/86
Foreign References:
CN112281239A2021-01-29
CN110629317A2019-12-31
CN1043942A1990-07-18
CN105860045A2016-08-17
CN102617842A2012-08-01
CN109364905A2019-02-22
JPH03245841A1991-11-01
CN112553707A2021-03-26
Other References:
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"Practical Dictionary of Chemistry and Chemical Engineering; 1st Edition", 30 April 1995, CHINA ASTRONAUTIC PUBLISHING HOUSE, CN, ISBN: 7-80034-367-7, article SONG, XINQI: "Passage", XP009536805
TANG, JIE ET AL.: "Passage; Production and Uses of Eco-Friendly Ceramic", PRODUCTION AND USES OF ECO-FRIENDLY CERAMIC; 1ST EDITION, 31 January 2018 (2018-01-31), CN, pages 203 - 206, XP009536804, ISBN: 978-7-5160-2126-2
"Advances in Fume Desulfurization and Denitrification Technology and Catalysts; 1st ed. ", 31 July 2016, CHINA UNIVERSITY OF MINING AND TECHNOLOGY PUBLISHING HOUSE, CN, article ZHANG, LEI: "Passage; Advances in Fume Desulfurization and Denitrification Technology and Catalysts", pages: 32 - 36, XP009536797
Attorney, Agent or Firm:
HANGZHOU FENGHE PATENT ATTORNEYS OFFICE CO., LTD. (CN)
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