Lignosulfonate derivatives

Details Lignosulfonate derivatives Lignosulfonate derivatives

1979-12-17

1981-10-06

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106315, 166293, C04B 735

Patent

active

042933420

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: 3841887 (1974-10-01), Falkehag et al.
patent: 4047567 (1977-09-01), Childs et al.
patent: 4065318 (1977-12-01), Detroit et al.

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