Mineral oils: processes and products – Refining – Water removal
Patent
1996-06-03
1997-12-02
Diamond, Alan
Mineral oils: processes and products
Refining
Water removal
210708, 252328, 252329, 252330, 252331, 252358, C10G 3304, C02F 156, B01D 1705
Patent
active
056932162
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:
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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.
Ind.Eng.Chem.Prod.Res.Dev. 1982, "Condensed Tannins for Adhesives", A. Pizzi, 21, 359-369, (month unknown).
Chen Fu
Chen Jen-Chi
Duong Thai H.
Hart Paul R.
BetzDearborn Inc.
Boyd Steven D.
Diamond Alan
Ricci Alexander D.
Toomer Cephia D.
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