Stable emulsions of p-hydroxybenzoic acid esters and method...

Details Stable emulsions of p-hydroxybenzoic acid esters and method... Stable emulsions of p-hydroxybenzoic acid esters and method...

C - Chemistry, Metallurgy

07

C

134/50

C07C 67/62 (2006.01) A01N 25/04 (2006.01) A01N 37/40 (2006.01) B01F 17/00 (2006.01)

Patent

CA 1181654

STABLE EMULSIONS OF p-HYDROXYBENZOIC ACID ESTERS AND METHOD OF PREPARATION Abstract of the Disclosure A heat and freeze-thaw stable, oil-in-water emulsion is comprised of from approximately 10% to 60% by weight of a eutectic oil containing a mixture of three or more lower alkyl esters of p-hydroxybenzoic acid, from approximately 1.5% to 5.0% by weight of an emulsifying agent which may be gelatin, casein, collagen, glyceryl oleate, the ammonium or sodium salt of sulfated nonyl- phenoxypoly(ethyleneoxy) ethanol or mixtures thereof, from approximately 3% to 10% by weight of sorbitol and the balance water. The method of preparing such emul- sions is also disclosed.

385542

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