Compositions – Preservative agents – Anti-corrosion
Patent
1994-11-03
2000-02-01
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
252332, 252344, 210708, 210728, B01D 1704, C10G 3304
Patent
active
060199121
ABSTRACT:
A method for resolving an oil-and-water emulsion is disclosed. The method comprises adding to the emulsion (1) if the emulsion does not contain a desirably high concentration of polyvalent metal cations of at least one part per million by weight, an amount of polyvalent metal cations sufficient to result in the desirably polyvalent metal cation concentration in the emulsion, and (2) an effective demulsifying amount of a combination of a terminating agent that is either a non-emulsifying hydrotrope composition or a coupling agent, and a composition comprising a polydithiocarbamate compound comprising at least two groups represented by the formula --(OR.sup.1).sub.x NHC(:S)SR.sup.2, wherein R.sup.1 represents an alkylene group of 1 to 30 carbon atoms, R.sup.2 represents an alkali or alkaline earth metal group or an ammonium group; and x represents an integer of from 1 to about 250 independently selected for each of such groups such that the total of the integers x is, on average, from 3 to about 250. Related compositions are also disclosed.
REFERENCES:
patent: 4342657 (1982-08-01), Blair, Jr.
patent: 4689177 (1987-08-01), Thompson et al.
patent: 4826625 (1989-05-01), Thompson et al.
patent: 4864075 (1989-09-01), Thompson et al.
patent: 4956099 (1990-09-01), Thompson et al.
patent: 5026483 (1991-06-01), Thompson et al.
patent: 5089227 (1992-02-01), Thompson et al.
patent: 5089619 (1992-02-01), Thompson et al.
patent: 5190683 (1993-03-01), Evain et al.
patent: 5200086 (1993-04-01), Shah et al.
patent: 5368779 (1994-11-01), Snethen
patent: 5433863 (1995-07-01), Braden et al.
patent: 5523002 (1996-06-01), Carey et al.
Handbook of Chemistry and Physics, Thirty-Fifth Edition (Chemical Rubber Publishing Co, Cleveland, OH) pp. 3087, 1953 month unavailable.
Hawley's Condensed Chemical Dictionary, Eleventh Edition (Van Nostrand Reinhold Company, NY, NY) pp. 837 & 1232, 1987 month unavailable.
Baker Hughes Incorporated
Lovering Richard D.
Metzmaier Daniel S.
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