Compositions – Preservative agents – Anti-corrosion
Patent
1980-07-17
1983-07-26
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
210925, 252 855D, 252312, 252352, 252DIG6, 435101, B01F 1730, B01F 1734, B01F 1752
Patent
active
043953549
ABSTRACT:
Growth of Acinetobacter Sp. ATCC 31012 on various substrates and under varying conditions has been used to produce two classes of extracellular microbial protein-associated lipopolysaccharides (the "emulsans") which, on a weight-for-weight basis, are probably the most efficient emulsifiers discovered and which possess certain characteristics that permit these unique extracellular microbial lipopolysaccharides to be widely used in cleaning oil-contaminated vessels, oil spill management, and enhanced oil recovery by chemical flooding. These classes have been named .alpha.-emulsans and .beta.-emulsans, both of which have substantially the same polymer backbone but differ from each other in certain important structural aspects. Emulsans and apoemulsans, both of which biopolymers are strongly anionic, exhibit a high degree of specificity in the emulsification of hydrocarbon substrates which contain both aliphatic and cyclic components. In addition, these extracellular microbial polysaccharides as well as their O-deacylated and N-deacylated derivatives are adsorbed on and capable of flocculating aluminosilicate ion-exchangers, such as kaolin and bentonite.
REFERENCES:
patent: 3941692 (1976-03-01), Gutnick et al.
patent: 3997398 (1976-12-01), Zajic et al.
Towner et al., "RP4 Fertility Variants in Acinetobacter Calcoaceticus", Genet. Res. 28: 301-306, (1976).
Horowitz et al.: Applied Microbiology, 30, 10 (1975).
Gutnick et al.: Annual Reviews of Microbiology, 31, 379 (1977).
Reisfeld et al.: Applied Microbiology, 24, 363 (1972).
Rosenberg et al.: EPA Report 660-3-75-001, pp. 157-68, Dec. 1974.
Englander et al.: Int. Assoc. Microbiol. Soc. Abstracts, vol. II, p. 201.
Zajic et al.: Dev. Ind. Microbiol., 12, 87 (1971).
Zajic et al.: Biotechnol. Bioeng., 14, 331 (1972).
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Zajic et al.: Critical Rev. Microbiol., 5, 39 (1976).
Belsky Igal
Gutnick David L.
Rosenberg Eugene
Zinaida Zosim
Lovering Richard D.
Petroleum Fermentations N.V.
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