Compositions – Preservative agents – Anti-corrosion
Patent
1985-04-25
1987-09-01
Yarbrough, Amelia B.
Compositions
Preservative agents
Anti-corrosion
2523151, B01J 1300
Patent
active
046907750
ABSTRACT:
Stable, isotropic gels which can be readily redispersed/reconstiuted into fluid emulsions, as such providing useful carriers for a wide variety of substances having little or no solubility in water, e.g., some types of drugs, are prepared by centrifuging an emulsion comprising a substantially oleophilic, hydrophobic liquid component constituting the dispersed phase in a substantially aqueous liquid component containing an emulsifying amount of emulsifying amount of emulsifying agent which is soluble therein at its level of concentration but which is substantially insoluble in the oleophilic, hydrophobic component, the emulsion being devoid of gelling agent, to separate the emulsion into a gel phase containing substantially all of the oleophilic, hydrophobic component of the emulsion and a clear aqueous phase.
REFERENCES:
patent: 3101301 (1963-08-01), Siegal et al.
patent: 4066568 (1978-01-01), Nakazawa et al.
patent: 4160754 (1979-07-01), Schapel et al.
Rehfeld, Journal of Colloid & Interface Science, 46, No. 3, pp. 448-458 (Mar. 1974).
Vold, et al., Journal of Colloid & Interface Science, vol. 65, No. 2, pp. 390-393 (Jun. 15, 1978).
Garrett, J. Soc. Cosmet. Chem., vol. 21 (May 27, 1970) pp. 393-415.
Royce Alan E.
Schott Hans
Research Corporation
Yarbrough Amelia B.
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