Organophilic polyphenolic acid adducts

Details Organophilic polyphenolic acid adducts Organophilic polyphenolic acid adducts

C - Chemistry, Metallurgy

09

K

31/13

C09K 8/88 (2006.01) C08H 99/00 (2010.01) C07F 9/02 (2006.01) C08L 97/00 (2006.01) E21B 21/00 (2006.01) C08H 6/00 (2010.01)

Patent

CA 1285746

ABSTRACT Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are pre- pared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vege- table oils, most preferably commercial lecithin. Preferred polyphenolic materials comprise one or more of: humic acid; lignosulfonic acid; lignins; phenolic condensates; tannins; the oxidized, sulfonated, or sulfomethylated derivatives of these polyphenolic materials; and the water soluble or colloidally dispersible salts of these polyphenolic materials or these deriva- tives thereof.

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