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

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

1980-10-23

1982-11-02

Phynes, Lucille M.

Compositions

Preservative agents

Anti-corrosion

252311, B01J 1300

Patent

active

043572588

ABSTRACT:
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 nonylphenoxypoly(ethyleneoxy) ethanol or mixtures thereof, from approximately 3% to 10% by weight of sorbitol and the balance water. The method of preparing such emulsions is also disclosed.

REFERENCES:
patent: 3097131 (1963-07-01), Ueno et al.
patent: 4309564 (1981-01-01), Loncrini et al.

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