Well cement slurries and dispersants therefor

Details Well cement slurries and dispersants therefor Well cement slurries and dispersants therefor

1989-01-23

1990-05-08

Hearn, Brian E.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106503, 252 8551, C04B 2400

Patent

active

049235168

ABSTRACT:
Well cement slurries, water soluble dispersants therefor and methods of producing the dispersants are provided. The dispersants prevent high initial cement slurry viscosities and friction losses when the slurries are pumped, and are comprised of water soluble sulfoalkylated naphthols in which the naphthol molecules are alkylated with at least one group having the formula --C(R).sub.2 --SO.sub.3 M wherein R is selected from hydrogen and alkyl radicals containing from 1 to 5 carbon atoms and M is an alkali metal.

REFERENCES:
patent: 3479287 (1969-11-01), Floyd et al.
patent: 3537991 (1970-11-01), Parker
patent: 3956140 (1976-05-01), Nahm et al.
patent: 3973904 (1976-08-01), Endres et al.
patent: 4131582 (1978-12-01), Kako et al.
patent: 4293342 (1981-10-01), Detroit
patent: 4389320 (1983-06-01), Clampitt
patent: 4479826 (1989-10-01), Papalos
Chemical Abstracts, 110:156079h; 110:115373k; 108:131267p; 105:80766d; 83:207560s; 78:73621y.

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