Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1990-05-02
1992-08-11
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08K 318
Patent
active
051379457
ABSTRACT:
A cement dispersant having as a main component thereof at least one polymer selected from the group consisting of polymers obtained from (A) 0.1 to 100 mol % of a sulfonic acid type monomer represented by the formula I: ##STR1## wherein R stands for hydrogen atom or methyl group, X stands for hydrogen atom, a monovalent metallic atom, a divalent metallic atom, ammonium group, or an organic amine group, A and B independently stand for an alkylene group of 2 to 4 carbon atoms, m stands for 0 or an integer of the value of 1 to 100, and the alkylene oxide group of 2 to 4 carbon atoms in the portion, (AO).sub.m may be bound in any desired sequence, and (B) 99.9 to 0 mol % of olther monomer copolymerizable with said sulfonic acid type monomer, and polymers obtained by neutralizing said polymers with an alkaline substance, a cement composition containing the dispersant and a method for dispersing a cement.
REFERENCES:
patent: 3250736 (1966-05-01), Gibbs
patent: 3312671 (1967-04-01), Swisher
patent: 4086200 (1978-04-01), Lamoria
patent: 4450013 (1984-05-01), Hirsch et al.
patent: 4558092 (1985-12-01), Reinecke et al.
patent: 4743301 (1988-05-01), Ito
patent: 4808641 (1989-02-01), Yagi
patent: 4870120 (1989-09-01), Tsubakimoto
Chem. Abstract 107, (12) p. 324, col. 1, No. 101707 (equivalent to JP-A-62 119147.
Hirata Tsuyoshi
Ito Hiroshi
Kobayashi Hiroya
Tahara Hideyuki
Tsubakimoto Tsuneo
Behr Omri M.
Henderson Christopher
Nippon Shokubai Kagaku Kogyo & Co., Ltd.
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