Title:
リン酸エステル系重合体の製造方法
Document Type and Number:
Japanese Patent JP4805069
Kind Code:
B2
Abstract:
To provide a method for producing a dispersing agent for hydraulic composition imparting an excellent dispersing effect and viscosity reducing effect to a hydraulic composition and stably storing without corruption, in a practical industrial level.
The method for producing the phosphate polymer comprises copolymerization of a specific monomer 1 having a polyoxyalkylene group and a phosphate based monomer 2 in the presence of a chain transfer agent by a solution polymerization method, wherein 50-3000mg of hydrogen peroxide per 1kg of the reaction liquid is added to the reaction liquid after copolymerization reaction.
COPYRIGHT: (C)2007,JPO&INPIT
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Inventors:
Masao Shimoda
Yoshinao Mitsuno
Yoshikazu Morii
Yoshihito Naga
Yoshinao Mitsuno
Yoshikazu Morii
Yoshihito Naga
Application Number:
JP2006240673A
Publication Date:
November 02, 2011
Filing Date:
September 05, 2006
Export Citation:
Assignee:
Kao Corporation
International Classes:
C08F220/28; C04B24/26; C08F2/38; C08F6/02; C08F290/06
Domestic Patent References:
| JP2004043213A | ||||
| JP11209155A | ||||
| JP11209154A | ||||
| JP11079811A | ||||
| JP2000327386A | ||||
| JP10228004A |
Foreign References:
| WO1999062838A1 |
Attorney, Agent or Firm:
Satoshi Furuya
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa