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US 5,958,431 AGranted
Use of fatty alcohol based compositions for preparing emulsions; method of preparing emulsions and emulsions so obtained
AssigneeSociete d'Exploitation de Produits pour les Industries Chimique S.E.P.P.I.C.
InventorsBernard Brancq, Jean-Pierre Boiteux
Life of this patent
Estimating the term…
Abstract
The present invention relates to the use of fatty alcohol based compositions comprising: 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, preferably from 16 to 18 carbon atoms, 10 to 40% by weight of an alkylpolyoside, preferably an alkylpolyoside of which the alkyl part is identical to that of the fatty alcohol, and, if appropriate, 0.5 to 5% of polyoside, for preparing emulsions. The invention finds an application in particular for preparing emulsions in the cosmetic and pharmaceutical fields.
Claims56
A method for preparing an emulsion comprising:
- a) a first step of separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, at least one fatty alcohol having from 12 to 22 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolyoside of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase;
- and
- b) a subsequent step of dispersing the composition obtained in step a at said temperature in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion comprising:
- a) a first step of separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, at least one fatty alcohol having from 12 to 22 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolyoside, of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase;
- a1) neutralizing and filtering the composition thus obtained, and
- b) a subsequent step of dispersing the neutralized and filtered composition at said temperature in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion comprising:
- a) a first step of separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, a mixture of fatty alcohols consisting of at least 50% by weight of fatty alcohols having from 16 to 18 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of fatty alcohols from said mixture including at least one fatty alcohol having from 16 to 18 carbon atoms, 10 to 40% by weight of alkylpolyosides with at least one alkylpolyside having an alkyl part identical to that of the at least one fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase;
- and
- b) a subsequent step of dispersing the composition obtained in step a at said temperature in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion comprising:
- a) a first step of separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, a mixture of fatty alcohols consisting of at least 50% by weight of fatty alcohols having from 16 to 18 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of fatty alcohols from said mixture including at least one fatty alcohol having from 16 to 18 carbon atoms, 10 to 40% by weight of alkylpolyosides with at least one alkylpolyside having an alkyl part identical to that of the fatty at least one fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase;
- a1) neutralizing and filtering the composition thus obtained, and
- b) a subsequent step of dispersing the composition obtained in step a at said temperature in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion consisting essentially of
- a) separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, at least one fatty alcohol having from 12 to 22 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolyoside of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase;
- and
- b) dispersing the composition obtained in step a, and optionally also dispersing an oil, at said temperature in the aqueous phase, said composition obtained in step a being dispersed in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion consisting essentially of
- a) separately forming a self-emulsifiable composition consisting essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolysoide of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside;
- and
- b) dispersing the composition obtained in step a), and optionally also dispersing an oil, at a temperature between about 50 and 80 degrees C. in an aqueous phase, said composition obtained in step a being dispersed in the aqueous phase in a sufficient quantity to form a stable emulsion.
A method for preparing an emulsion consisting essentially of
- a) separately forming a self-emulsifiable composition as a reaction product by reacting, in acid medium, at least one fatty alcohol having from 12 to 22 carbon atoms with at least one ose selected from the group consisting of glucose, dextrose, saccharose, fructose, galactose, maltose, maltotriose, lactose, cellobiose, mannose, ribose, dextrane, talose, allose, xylose, levoglucosane, cellulose and starch in reaction conditions such that the reaction product consists essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolyoside of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside and such that the composition can form a stable emulsion merely by dispersion of a sufficient quantity of the composition at a temperature between about 50 and 80 degrees C. in an aqueous phase,
- a1) neutralizing and filtering the composition thus formed;
- and
- b) dispersing the neutralized and filtered composition, and optionally also dispersing an oil, at said temperature in the aqueous phase, said neutralized and filtered composition being dispersed in the aqueous phase in a sufficient quantity to form a stable emulsion.
1 more element
A method for preparing an emulsion consisting essentially of
- a) separately forming a self-emulsifiable composition consisting essentially of 60 to 90% by weight of at least one fatty alcohol having from 12 to 22 carbon atoms, 10 to 40% by weight of an alkylpolysoide of which the alkyl part is identical to that of the fatty alcohol, and from 0 to 5% by weight of polyoside;
- and
- a1) neutralizing and filtering the composition thus formed;
- and
- b) dispersing the neutralized and filtered composition, and optionally also dispersing an oil, at a temperature between about 50 and 80 degrees C. in an aqueous phase, said neutralized and filtered composition being dispersed in the aqueous phase in a sufficient quantity to form a stable emulsion.
2 more elements
Dependencies are inferred from the claim text.