Title:
METHOD FOR MANUFACTURING POLYLACTIC ACID
Document Type and Number:
Japanese Patent JP2012046607
Kind Code:
A
Abstract:
To achieve a high molecular weight and a high optical purity without coloring.
A lactic acid prepolymer is solid-phase polymerized in the presence of at least one phosphate catalyst selected from the group consisting of phenyl phosphate, phenylphosphonic acid, and fluorophosphoric acid.
Inventors:
HONMA NOBUTAKA
OBARA HITOMI
TAKENAKA MAKOTO
OBARA HITOMI
TAKENAKA MAKOTO
Application Number:
JP2010189239A
Publication Date:
March 08, 2012
Filing Date:
August 26, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CORP
KYOTO INST OF TECHNOLOGY
KYOTO INST OF TECHNOLOGY
International Classes:
C08G63/06; C08L101/16
Domestic Patent References:
| JP2010077350A | 2010-04-08 | |||
| JP2010174070A | 2010-08-12 | |||
| JP2005255940A | 2005-09-22 | |||
| JP2005298605A | 2005-10-27 | |||
| JP2003105074A | 2003-04-09 | |||
| JP2007119597A | 2007-05-17 | |||
| JP2010077350A | 2010-04-08 | |||
| JP2010174070A | 2010-08-12 |
Attorney, Agent or Firm:
Yusuke Hiraki
Satoshi Fujita
Satoshi Fujita