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Title:
METHOD FOR PRODUCING POLYLACTIC ACID RESIN COMPOSITION FOR ELECTROPHOTOGRAPHIC TONER, AND POLYLACTIC ACID RESIN FOR ELECTROPHOTOGRAPHIC TONER OBTAINED BY THE METHOD
Document Type and Number:
Japanese Patent JP2013060490
Kind Code:
A
Abstract:

To provide a method for producing a polylactic acid resin composition for an electrophotographic toner that prevents hydrolytic degradation from occurring during storage for improved storage stability.

The method for manufacturing a polylactic acid resin for an electrophotographic toner includes: a step for preparing a modified polylactic acid resin having a number average molecular weight of 3,000-10,000 by hydrolyzing a polylactic acid resin having a number average molecular weight of 10,000 or more in an alkaline aqueous solution of pH8-12 under heated and pressurized conditions; and a step for preparing a polylactic acid resin composition by mixing the modified polylactic acid resin and a hydrolysis inhibitor of 1-10 mass% relative to the modified polylactic acid resin.


Inventors:
IEGAKI YUICHIRO
KIHIRA KENJI
SUGA YUTA
TSUBAKI TADAHIRO
Application Number:
JP2011198401A
Publication Date:
April 04, 2013
Filing Date:
September 12, 2011
Export Citation:
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Assignee:
CASIO ELECTRONICS CO LTD
CASIO COMPUTER CO LTD
International Classes:
C08L67/04; C08J3/20; C08K5/315; C08L101/16; G03G9/087
Domestic Patent References:
JP2010066491A2010-03-25
JP2011002592A2011-01-06
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori