Title:
BIODEGRADABLE POLYESTER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2017/152771
Kind Code:
A1
Abstract:
Disclosed in the present invention is a biodegradable polyester composition, comprising a cyclic ester of the structure shown in formula (I) having a mass content of 100ppm-950ppm based on the total mass of the biodegradable polyester composition; by means of adding the cyclic ester to the composition and controlling the content of the ester in the composition within the range of 100ppm-950ppm, the invention greatly improves the thermo-oxidative ageing resistance of the biodegradable polyester composition, and a blow-moulded film or injection-moulded workpiece, by boiling with 95% ethanol at 40℃ for 240 hours, has little surface precipitate and an excellent surface appearance.
Inventors:
LU CHANGLI (CN)
YUAN ZHIMIN (CN)
CAI TONGMIN (CN)
HUANG XIANBO (CN)
ZENG XIANGBIN (CN)
JIAO JIAN (CN)
YUAN RENXU (CN)
ZHONG YUKE (CN)
XIONG KAI (CN)
YANG HUI (CN)
MAI KAIJIN (CN)
DONG XUETENG (CN)
YUAN ZHIMIN (CN)
CAI TONGMIN (CN)
HUANG XIANBO (CN)
ZENG XIANGBIN (CN)
JIAO JIAN (CN)
YUAN RENXU (CN)
ZHONG YUKE (CN)
XIONG KAI (CN)
YANG HUI (CN)
MAI KAIJIN (CN)
DONG XUETENG (CN)
Application Number:
PCT/CN2017/074667
Publication Date:
September 14, 2017
Filing Date:
February 24, 2017
Export Citation:
Assignee:
YANG HONGMEI (CN)
International Classes:
C08L67/02; C08K5/156; C08K13/02; C08L3/02; C08L25/14; C08L67/04
Domestic Patent References:
| WO2009071475A1 | 2009-06-11 |
Foreign References:
| CN102639594A | 2012-08-15 | |||
| JPS6067550A | 1985-04-17 | |||
| CN104744898A | 2015-07-01 | |||
| CN104479304A | 2015-04-01 | |||
| CN103627153A | 2014-03-12 | |||
| CN102942770A | 2013-02-27 | |||
| CN105585825A | 2016-05-18 | |||
| CN103687902A | 2014-03-26 |
Other References:
See also references of EP 3260495A4
Attorney, Agent or Firm:
GUANGZHOU WISON I.P. LAW FIRM (CN)
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