Lignosulfonate derivatives

Details Lignosulfonate derivatives Lignosulfonate derivatives

1978-02-09

1980-08-26

Phillips, Delbert R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106 90, 106315, 166293, C07G 100, C04B 702, C04B 1300, E21B 3313

Patent

active

042194717

ABSTRACT:
This invention relates to lignosulfonate derivatives and alkali metal salts thereof derived from sulfite waste liquor that has been subjected to alkaline oxidation, hydrolysis and partial desulfonation with subsequent resulfonation; and followed by one or more addition and double decomposition and reactions thereof; as well as the method of cementing subterranean geological formations penetrated by well bores utilizing these additives in well cementing compositions.

REFERENCES:
patent: 3578651 (1971-05-01), Ludwig
patent: 3841887 (1974-10-01), Falkehag et al.
patent: 4047567 (1977-09-01), Childs

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