12-hydroxy stearic acid esters, compositions based upon same and methods of using and making such compositions
AssigneeBernel Chemical Co.
InventorArnold W. Fogel
Life of this patent
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Abstract
The present invention relates to a synthetic, branched chain, oil soluble, fatty acid esters which, when preferably partially neutralized in situ, is revealed as a new water-in-oil emulsifier. Formulations are presented which demonstrate a method for using the disclosed emulsifier to prepare stable water-in-oil emulsions of varying polarity and viscosity for use in a variety of dermatological applications, and/or wherever emulsions according to the present invention may be used.
Claims64
An emulsifier compound for use in producing oil-in-water emulsions consisting essentially of the reaction product of a 12-hydroxystearic acid ester compound of the formula:
- ##STR3## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group and a neutralizing compound selected from the group consisting of sodium tetraborate decahydrate, sodium tetraborate tetrahydrate, Al(OH).sub.3, Ca(OH).sub.2, Mg(OH).sub.2, Na.sub.2 HPO.sub.4, K.sub.2 HPO.sub.4, Na.sub.3 PO.sub.4, K.sub.3 PO.sub.4, NaHCO.sub.3, KHCO.sub.3, Na.sub.2 CO.sub.3, K.sub.2 CO.sub.3, NaOH, KOH, a fatty amine compound and mixtures, thereof.
An emulsifier compound for use in producing oil-in-water emulsions consisting essentially of the reaction product of a 12 hydroxystearic acid ester compound according to the formula:
- ##STR4## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group and a neutralizing compound is selected from the group consisting of sodium tetraborate decahydrate, sodium tetraborate tetrahydrate, Na.sub.2 HPO.sub.4, K.sub.2 HPO.sub.4, Na.sub.3 PO.sub.4, NaHCO.sub.3, KHCO.sub.3, Na.sub.2 CO.sub.3, K.sub.2 CO.sub.3 and mixtures, thereof.
A composition consisting essentially of:
- an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase consisting essentially of about 70% to about 99.75% by weight of an oil and about 0.25% to about 30% by weight of a 12-hydroxystearic acid ester compound according to the formula:
- ##STR5## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group, said water phase consisting essentially of water and an amount of a neutralizing compound effective to produce an emulsion composition when said oil phase and said water phase are mixed.
A composition consisting essentially of:
- an oil phase and a water phase, said oil phase comprising about 25% to about 80% by weight of said composition and said water phase comprising about 20% to about 75% by weight of said composition, said oil phase consisting essentially of about 80% to about 99.5% by weight of an oil and about 0.5% to about 20% by weight of a 12-hydroxystearic acid ester compound according to the formula:
- ##STR6## where R is a linear or branch chained saturated or unsaturated C.sub.11 -C.sub.23 hydrocarbon group, said water phase consisting essentially of water and an amount of a neutralizing compound selected from the group consisting of sodium tetraborate decahydrate, sodium tetraborate, Na.sub.2 HPO.sub.4, K.sub.2 HPO.sub.4, Na.sub.3 PO.sub.4, K.sub.3 PO.sub.4, NaHCO.sub.3, KHCO.sub.3, Na.sub.2 CO.sub.3, K.sub.2 CO.sub.3 and mixtures thereof effective to produce an emulsion composition when said oil phase and said water phase are mixed.
An emulsion composition consisting essentially of:
- 1) about 0.5% to about 15% by weight of the reaction product of a 12-hydroxy stearic acid ester compound according to the structure:
- ##STR7## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group and a neutralizing compound selected from the group consisting of sodium tetraborate decahydrate, sodium tetraborate tetrahydrate, Al(OH).sub.3, Ca(OH).sub.2, Mg(OH).sub.2, Na.sub.2 HPO.sub.4 or K.sub.2 HPO.sub.4 Na.sub.3 PO.sub.4, K.sub.3 PO.sub.4, NaHCO.sub.3, KHCO.sub.3, Na.sub.2 CO.sub.3, K.sub.2 CO.sub.3, NaOH, KOH, a fatty amine compound and mixtures thereof;
- 2) about 15% to about 89.5% by weight of an oil;
- 3) optionally, from 0.1% to about 20% by weight of a secondary emulsifier;
- and
- 4) about 10% to about 75% water.
A composition consisting essentially of:
- an emulsion, said emulsion being formed by mixing an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase consisting essentially of at least about 70% to about 99.75% by weight of an oil and about 0.25% to about 30% by weight of a 12-hydroxystearic acid ester compound according to the formula:
- ##STR8## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group, said water phase consisting essentially of water and an amount of a neutralizing compound effective to produce an emulsion when said oil phase and said water phase are mixed.
A method of producing an emulsion composition from an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase consisting essentially of about 70% to about 99.75% by weight of an oil and about 0.25% to about 30% by weight of a 12-hydroxystearic acid ester compound according to the formula:
- ##STR9## where R is a linear or branch chained saturated or unsaturated C.sub.6 -C.sub.35 hydrocarbon group;
- said water phase consisting essentially of water and an amount of a neutralizing compound effective to produce an emulsion when said oil phase and said water phase are mixed, said method comprising, in any order,
- mixing said oil and said stearic acid ester compound at a temperature effective to form a solution of said oil phase;
- mixing said water and said neutralizing compound at a temperature effective to form a solution of said water phase, and
- mixing said oil phase and said water phase at a temperature above about 75.degree. C. to produce said emulsion.
An emulsion composition produced by mixing an oil phase and a water phase, said oil phase comprising about 10% to about 90% by weight of said composition and said water phase comprising about 10% to about 90% by weight of said composition, said oil phase consisting essentially of at least about 70% to about 99.75% by weight of an oil and about 0.25% to about 30% by weight of 12-(behenoyloxy)stearic acid;
- said water phase consisting essentially of water and an amount of a neutralizing compound effective to produce an emulsion when said oil phase and said water phase are mixed.
Dependencies are inferred from the claim text.