Title:
CEMENT ADDITIVE FOR GROUT METHOD
Document Type and Number:
Japanese Patent JP3443454
Kind Code:
B2
Abstract:
PURPOSE: To attain the high fluidity of a hardening material and to improve viscosity reducing property to a clay and reference strength by allowing a cement additive to consist of a copolymer obtained by polymerizing a specific monomer and one or more kinds of monomers selected between two kinds of compounds as a component.
CONSTITUTION: The copolymer A having the weight-average molecular weight of 3000-1000000 is obtained by polymerizing the monomer (a) expressed by formula I and one or more kinds of the monomer selected from the compounds expressed by formulas II and III in the mol ratio of (a)/(b)=0.1/100-100/100. The copolymer A and a compound B selected from oxycarboxylic acid or the salt, sugar and sugar alcohol are blended in the ratio of A/B=100/0.01-5.0. In the formula I, each of R1 and R2 is hydrogen or methyl, m1 is 0-2, AO is a 2-3C oxyalkylene, (n) is 110-300, X is H or a 1-3C alkyl. In the formulas II and III, each of R3-R5 is H, methyl or (CH2)m2COOM2, R6 is H or methyl, each of M1, M2 and Y is H, an alkali metal, alkaline earth metal, ammonium, an alkylammonium or a substituted alkylammonium and m2 is 0-2.
More Like This:
Inventors:
Yamato Fuji Cherry Blossoms
Akitoshi Tsuji
Akitoshi Tsuji
Application Number:
JP15483894A
Publication Date:
September 02, 2003
Filing Date:
July 06, 1994
Export Citation:
Assignee:
Kao Corporation
International Classes:
C04B24/06; C04B24/10; C04B24/16; C04B24/26; C04B24/38; C04B28/02; C07C309/04; C08F290/00; C08F290/06; C09K17/10; C09K17/44; C04B103/40; C04B111/70; (IPC1-7): C04B24/26; C04B24/06; C04B24/10; C04B24/38; C04B28/02; C09K17/10; C09K17/44
Domestic Patent References:
| JP6107446A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)