Title:
セメント分散剤
Document Type and Number:
Japanese Patent JP3612005
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cement admixture which enables exhibition of dispersion characteristics, dispersion retentivity and initial strength of concrete at their respective high levels under a wide variety of concrete production conditions. SOLUTION: This cement dispersant contains: a copolymer mixture A obtained by copolymerizing a specific monomer A1 such as ethylenically unsaturated carboxylic acid derivative having a polyoxyalkylene group, and another specific monomer A2 such as (meth)acrylic acid, wherein the monomer molar ratio of A1/A2 is at least once changed in the process of the copolymerization reaction; and a copolymer B obtained by copolymerizing a specific monomer B1 such as ethylenically unsaturated carboxylic acid derivative having a polyoxyalkylene group, and another specific monomer B2 such as (meth)acrylic acid.
Inventors:
Daisuke Shiba
Haruyuki Sato
Yoshinao Mitsuno
Masanaka Masanaka
Masao Shimoda
Haruyuki Sato
Yoshinao Mitsuno
Masanaka Masanaka
Masao Shimoda
Application Number:
JP2000167465A
Publication Date:
January 19, 2005
Filing Date:
June 05, 2000
Export Citation:
Assignee:
Kao Corporation
International Classes:
C04B24/16; C04B24/26; C08F216/14; C08F220/04; C08F220/12; C08F222/02; C08F222/04; C08F228/02; C08F290/06; C08L29/10; C08L33/02; C08L33/04; C08L33/14; C08L35/02; C08L41/00; C04B103/40; (IPC1-7): C04B24/26; C08F216/14; C08F220/04; C08F220/12; C08F222/02; C08F222/04; C08F228/02; C08F290/06; C08L29/10; C08L33/02; C08L33/04; C08L35/02; C08L41/00
Domestic Patent References:
| JP853522A | ||||
| JP10194808A | ||||
| JP57118058A | ||||
| JP11106249A | ||||
| JP11268940A | ||||
| JP11335150A | ||||
| JP2001180998A | ||||
| JP9286645A |
Attorney, Agent or Firm:
Kaoru Furuya
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida
Yoshitsune Kazumasa
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida
Yoshitsune Kazumasa