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Patent Searching and Data


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)
Application Number:
PCT/KR2016/010637
Publication Date:
June 29, 2017
Filing Date:
September 23, 2016
Export Citation:
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Assignee:
LOTTE FINE CHEMICAL CO LTD (KR)
S-ENPOL CO LTD (KR)
International Classes:
C08G63/78; C08G63/16; C08L67/02; C08L101/16
Foreign References:
KR20150078271A2015-07-08
KR20110007185A2011-01-21
KR20130143711A2013-12-31
KR20150104081A2015-09-14
KR20000057356A2000-09-15
Attorney, Agent or Firm:
TNI IP LAW FIRM (KR)
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