Compositions – Preservative agents – Anti-corrosion
Patent
1997-07-24
1998-12-22
Howard, Jacqueline V.
Compositions
Preservative agents
Anti-corrosion
252330, 252331, 252358, B01D 1704
Patent
active
058514333
ABSTRACT:
Methods and compositions for breaking oil and water emulsions are disclosed. Oil and water emulsions are broken by treating the emulsion with a copolymer of tannin and a cationic monomer. The preferred composition is an aqueous solution of a copolymer of tannin and a cationic monomer, a water soluble organic multivalent salt and a glycol. The preferred salt is aluminum chlorohydrate and the preferred glycol is hexylene glycol.
REFERENCES:
patent: 5176847 (1993-01-01), Kremer
patent: 5236951 (1993-08-01), Hart
patent: 5250174 (1993-10-01), Hart
patent: 5256304 (1993-10-01), Meyer et al.
patent: 5256305 (1993-10-01), Hart
patent: 5282974 (1994-02-01), Hart
patent: 5433863 (1995-07-01), Braden et al.
patent: 5643462 (1997-07-01), Chen et al.
Chen Fu
Chen Jen-Chi
Duong Thai H.
Hart Paul R.
BetzDearborn Inc.
Boyd Steven D.
Howard Jacqueline V.
Ricci Alexander D.
Toomer Cephia D.
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