Title:
METHOD FOR PRODUCING LOW-MELTING-POINT RECYCLED POLYESTER USED FOR SHEATH-CORE POLYESTER BY METHANOL DEGRADATION
Document Type and Number:
WIPO Patent Application WO/2014/146587
Kind Code:
A1
Abstract:
A method for preparing low-melting-point recycled polyester used for sheath-core polyester. The low-melting-point recycled polyester is prepared by degradation and polycondensation of the following raw materials: a. recycled raw materials; b. methanol; c. one or more of zinc acetate, potassium acetate, manganese acetate, magnesium acetate, lead acetate, cobalt chloride, tetrabutyl titanate, tetraisopropyl titanate, and dibutyl dilaurate; d. one or more of isophthalic acid, adipic acid, and sebacic acid; e. one or more of neopentyl glycol, hexanediol, butanediol, and polyethylene glycol; f. catalyst antimonous oxide and cobalt acetate; and g. stabilizer trimethyl phosphate. The low-melting-point recycled polyester can be used for preparing sheath-core polyester staple fiber, and the prepared polyester staple fiber can be used for making nonwoven, flocking, and a compound material.
Inventors:
QIAN JUN (CN)
WANG FANGHE (CN)
TANG SHIJUN (CN)
XING XIQUAN (CN)
QIN DAN (CN)
MA ZHEFENG (CN)
DU FANG (CN)
WANG XIUHUA (CN)
WANG FANGHE (CN)
TANG SHIJUN (CN)
XING XIQUAN (CN)
QIN DAN (CN)
MA ZHEFENG (CN)
DU FANG (CN)
WANG XIUHUA (CN)
Application Number:
PCT/CN2014/073750
Publication Date:
September 25, 2014
Filing Date:
March 20, 2014
Export Citation:
Assignee:
NINGBO DAFA CHEMICAL FIBER CO (CN)
International Classes:
C07C29/128; D01F8/14; C07C69/82; C08J11/24; D01D5/34
Foreign References:
| CN101445972A | 2009-06-03 | |||
| CN1275995A | 2000-12-06 | |||
| US5712410A | 1998-01-27 | |||
| CN103145958A | 2013-06-12 |
Attorney, Agent or Firm:
HANGZHOU FENGHE PATENT ATTORNEYS OFFICE CO., LTD (CN)
杭州丰禾专利事务所有限公司 (CN)
杭州丰禾专利事务所有限公司 (CN)
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