Title:
PREPARATION METHOD FOR BIODEGRADABLE POLYESTER CHIP
Document Type and Number:
WIPO Patent Application WO/2022/213498
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a biodegradable polyester chip, comprising the following steps: S1, preliminary preparation: two reactors having a stirring function, a temperature adjustment mechanism, a pressure adjustment mechanism, a data acquisition device, succinic acid, butanediol, polylactic acid, an aliphatic-aromatic copolyester, an inert gas inflating device, and a catalyst, the two reactors being connected by means of a connecting pipe; and S2, auxiliary mechanism connection: next, the inert gas inflating device, the temperature adjustment mechanism and the pressure adjustment mechanism are respectively connected to the two reactors by means of adjustment pipes. In the present invention, the biodegradable polyester chip is formed by fully reacting and mixing succinic acid, butanediol, polylactic acid and an aliphatic-aromatic copolyester. The degradation efficiency thereof is high, and no pollution is created after degradation, which can greatly shorten the degradation time and relieve the pressure of polyester on soil during degradation; in addition, the components after degradation do not pollute the soil, which environmentally friendly and convenient.
Inventors:
ZHANG XINFENG (CN)
Application Number:
PCT/CN2021/104216
Publication Date:
October 13, 2022
Filing Date:
July 02, 2021
Export Citation:
Assignee:
SUZHOU KAIRU NEW MATERIAL TECH CO LTD (CN)
International Classes:
C08L67/02; C08G81/00; C08L87/00
Foreign References:
| CN113025011A | 2021-06-25 | |||
| CN107141458A | 2017-09-08 | |||
| CN110573557A | 2019-12-13 | |||
| CN105440268A | 2016-03-30 | |||
| CN105418900A | 2016-03-23 | |||
| CN112280258A | 2021-01-29 |
Attorney, Agent or Firm:
HEFEI KERONG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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