Emulsifiers having water-in-oil-stabilizing properties and compositions, uses and methods relating to same
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United States of America Patent
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Feb 5, 2019
Grant Date -
Jun 22, 2017
app pub date -
Apr 22, 2015
filing date -
Apr 22, 2014
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Abstract
Emulsifiers are provided that are able to stabilize water-in-oil emulsions. The emulsifiers are homogenous and have a relatively low melting point (e.g., soft pastes, gels or liquids at room temperature), enabling their use in cold-process methods/formulations which reduce energy consumption, manufacturing costs, as well as allow the use thermolabile active ingredients. The water-in-oil emulsifiers may comprise: (a) polyglycerol fatty acid esters consisting of saturated and unsaturated fatty acid esters of polyglycerol; (b) polyhydroxystearic acid copolymers consisting of copolymers of hydroxystearic acid with saturated and unsaturated fatty acids; and (c) hydroxystearic acid. Methods and uses relating to the emulsifiers are also described, for example in cosmetic and pharmaceutical compositions.
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