Title:
METHOD FOR PREPARING BIODEGRADABLE POLYESTER RESIN, AND BIODEGRADABLE POLYESTER RESIN PREPARED BY METHOD
Document Type and Number:
WIPO Patent Application WO/2017/111261
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing a biodegradable polyester resin, and a biodegradable polyester resin prepared by the method, the method comprising the steps of: (1) injecting, into a reactor, at least one type of dicarboxylic acid of an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, at least one type of diol of an aliphatic diol and an aromatic diol, a catalyst and a deactivator so as to esterify the dicarboxylic acid and the diol; (2) polycondensing a product obtained by the esterification reaction; (3) cooling a product obtained by the polycondensation reaction (hereinafter, referred to as "polycondensation reaction product"); and (4) additionally injecting a deactivator into the polycondensation reaction product cooled in step (3). The thermal stability, in a molten state, of a biodegradable polyester resin to be finally obtained can be improved by the method for preparing a biodegradable polyester resin, of the present invention, and thus chain extension or compounding in a molten state is possible.
Inventors:
CHA BUM GYU (KR)
RYUM JUNG (KR)
CHUN JONG PIL (KR)
YOON KI CHULL (KR)
KIM YE JIN (KR)
PARK SUNG BAE (KR)
RYUM JUNG (KR)
CHUN JONG PIL (KR)
YOON KI CHULL (KR)
KIM YE JIN (KR)
PARK SUNG BAE (KR)
Application Number:
PCT/KR2016/010637
Publication Date:
June 29, 2017
Filing Date:
September 23, 2016
Export Citation:
Assignee:
LOTTE FINE CHEMICAL CO LTD (KR)
S-ENPOL CO LTD (KR)
S-ENPOL CO LTD (KR)
International Classes:
C08G63/78; C08G63/16; C08L67/02; C08L101/16
Foreign References:
KR20150078271A | 2015-07-08 | |||
KR20110007185A | 2011-01-21 | |||
KR20130143711A | 2013-12-31 | |||
KR20150104081A | 2015-09-14 | |||
KR20000057356A | 2000-09-15 |
Attorney, Agent or Firm:
TNI IP LAW FIRM (KR)
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