SELF-LEVELING AQUEOUS COMPOSITION

Japanese Patent JP3135781

B2

PURPOSE: To obtain a self-leveling aqueous composition capable of keeping high fluidity for a long term, attaining excellent workability and excellent strength development by using a cement mixed with natural type 11 anhydrous gypsum in a specific ratio as a base material and an acrylic dispersing agent having a specific structure.
CONSTITUTION: This self-leveling aqueous composition is obtained by blending 0.1-3 pts.wt. acrylic dispersing agent, 30-300 pts.wt. setting accelerator for gypsum, shrinkage reducing agent, thickener, defoaming agent and aggregate and 30-60 pts.wt. water based on 100 pts.wt. base material having the cement mixed with the natural type 11 anhydrous gypsum in the weight ratio of 40/60 to 80/20. The acrylic dispersing agent is obtained carrying out aqueous radical copolymerixation of 45-65mol% monomer expressed by a formula I [R1 is H or methyl; M1 is alkali (alkaline earth) metal, ammonium or an organic amine], 8-23mol% monomer expressed by a formula II (X is -SO3M1 or a formula VI and M3 is M1), 3-25% monomer expressed by a formula III [R2 and R3 each is R1; (m) is 1-30], 5-25mol% monomer expressed by a formula IV [R4 is R1, R5 is 1-3C alkyl and (n) is 5-50] and 3-15mol% monomer expressed by a formula V (R6 is R1 and R7 is R5).

Koichi Soeda
Hiroshi Hayashi
Masato Matsuhisa
Kazuhiro Sato
Satoshi Ashiyahara
Katsuo Hosono
Mitsuo Kinoshita
Yoshimasa Miura

JP6284594A

February 19, 2001

March 31, 1994

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Taiheiyo Cement Co., Ltd.
Takemoto Yushi Co., Ltd.

C04B24/26; C04B28/16; C04B103/32; C04B111/62; (IPC1-7): C04B28/16; C04B24/26

JP7118047A
JP6206750A
JP6191918A

Miyuki Ariga (3 outside)

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