Title:
ポリエステルの製造方法
Document Type and Number:
Japanese Patent JP4421657
Kind Code:
B2
Abstract:
The invention provides a process for producing high-molecular aliphatic polyesters capable of being substitutes for general-purpose resins that are required to have high toughness, in a simplified manner and at a high volume efficiency. Specifically, in the process, used as the starting material is an easily-available, low-molecular aliphatic polyester prepolymer to be prepared through polycondensation of inexpensive materials of an aliphatic hydroxycarboxylic acid such as lactic acid, glycollic acid or the like, an aliphatic polyalcohol such as butanediol or the like, and an aliphatic polycarboxylic acid such as succinic acid or the like, and the starting prepolymer is crystallized and thereafter polycondensed in a solid phase in the presence of a catalyst to give the intended, tough and high-molecular aliphatic polyester.
Inventors:
Yuji Terado
Hiroshi Mizutsu
Masatoshi Takagi
Masanobu Amioka
Hiraoka
Katsuyuki Sakai
Hiroyuki Suzuki
Ryo Shinagawa
Shinji Ogawa
Yasushi Kotaki
Hiroshi Mizutsu
Masatoshi Takagi
Masanobu Amioka
Hiraoka
Katsuyuki Sakai
Hiroyuki Suzuki
Ryo Shinagawa
Shinji Ogawa
Yasushi Kotaki
Application Number:
JP2008074076A
Publication Date:
February 24, 2010
Filing Date:
March 21, 2008
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08G63/06; B29B9/16; C08G63/60; C08G63/80; C08G63/85; C08G63/87; C08L101/16
Domestic Patent References:
| JP10324738A | ||||
| JP7247345A |
Attorney, Agent or Firm:
Patent corporation ssinpat
Shinichi Naemura
Shinichi Naemura