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Title:
INTEGRATED PREPARATION PROCESS FOR PRODUCING POLYGLYCOLIC ACID PRODUCTS
Document Type and Number:
WIPO Patent Application WO/2020/087219
Kind Code:
A1
Abstract:
The invention relates to an integrated process for producing a polyglycolic acid product, including polymerization, modification and molding. The resulting polyglycolic acid product may maintain the physical and chemical properties of polyglycolic acid to the greatest extent, including yellowness index (YI), weight-average molecular weight, strength and mean square radius of rotation. Also provided are the polyglycolic acid product and apparatus for carrying out the integrated process.

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Inventors:
WANG SAIBO (CN)
Application Number:
PCT/CN2018/112470
Publication Date:
May 07, 2020
Filing Date:
October 29, 2018
Export Citation:
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Assignee:
PUJING CHEMICAL IND CO LTD (CN)
International Classes:
C08G63/06; B29B9/00; B29C49/00; C08G63/83; C08G63/84; C08G63/85; C08G63/86
Domestic Patent References:
WO2003006525A12003-01-23
Foreign References:
US20090118462A12009-05-07
US20090298979A12009-12-03
CN101374883A2009-02-25
CN1827686B2010-05-12
US20090118461A12009-05-07
Other References:
See also references of EP 3873967A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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