Title:
POWDER DISPERSANT FOR HYDRAULIC COMPOSITION
Document Type and Number:
Japanese Patent JP3515516
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a powder dispersant excellent in pumping transportation before drying and excellent in pressure and moisture resistances.
SOLUTION: The powder dispersant contains a copolymer obtained by polymerizing a specific vinyl monomer (a) such as an ethylenic unsaturated carboxylic acid derivative having a polyoxyalkylene group and the specific vinyl monomer (b) such as (meth)acrylic acid, an average of addition mole number of a 2-4C oxyalkylene group or an oxystyrene group is 45-150, and the ratio of the monomer (a) to the monomer (b) is (a)/[(a)+(b)]×100 = more than 0 mol% to 45 mol% or less. At least a part of the copolymer is a multivalent metallic salt.
Inventors:
Shiba, Daisuke
Shirota, Kyoichi
Shirota, Kyoichi
Application Number:
JP2000361126A
Publication Date:
April 05, 2004
Filing Date:
November 28, 2000
Export Citation:
Assignee:
KAO CORP
International Classes:
C04B24/26; C04B24/04; C04B24/32; C08F216/12; C08F220/04; C08F222/02; C08F222/04; C04B103/40; (IPC1-7): C04B24/26; C08F216/12; C08F220/04; C08F222/02; C08F222/04
Attorney, Agent or Firm:
古谷 馨 （外４名）