Title:
PRODUCTION OF HIGH MOLECULAR WEIGHT ALIPHATIC POLYESTER- BASED POLYMER
Document Type and Number:
Japanese Patent JP3263728
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce the subject polymer having not only excellent color tone but also a meeting temperature sufficient in practical application, and capable of manifesting excellent mechanical strength and processability by polymerizing each specific aliphatic dicarboxylic acid and aliphatic diol in the presence of an acidic phosphorus compound.
SOLUTION: (A) An aliphatic dicarboxylic acid or an ester thereof of formula I (R1 is a 1-12C divalent aliphatic group; R11 is H, a lower alkyl or an aryl; t is 0 or 1), and (B) an aliphatic diol of formula II (R2 is a 2-12C divalent aliphatic group) are used as reaction raw materials, and subjected to a polycondensation reaction in the presence of (C) an acidic phosphorus compound and (D) an ester-exchange reaction catalyst in nonsolvent to provide the objective high molecular weight aliphatic polyester-based polymer having ≥30,000 number average molecular weight. If necassary, at least one kind of compounds selected from an oxycarboxylic acid-based compound, a carbonic ester-based compound, and a polyglycerol-based compound can be added to the reaction raw materials.
Inventors:
Takashi Masuda
Hiroshi Ishigami
Fart Sakaguchi
Kazuo Nakayama
Hiroshi Ishigami
Fart Sakaguchi
Kazuo Nakayama
Application Number:
JP13066499A
Publication Date:
March 11, 2002
Filing Date:
May 11, 1999
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
International Classes:
C08G63/87; C08G63/64; C08G63/692; C08L101/16; (IPC1-7): C08G63/87; C08G63/64
Domestic Patent References:
| JP931173A | ||||
| JP6322081A | ||||
| JP6271656A | ||||
| JP5491589A | ||||
| JP7118360A | ||||
| JP4292620A | ||||
| JP3515244B1 | ||||
| JP35497B1 |