US 5,077,040 AGranted

Hair-treating microemulsion composition and method of preparing and using the same

AssigneeHelene Curtis, Inc.

InventorsWolfgang Bergmann, Janice Bees

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Abstract

A microemulsion composition for treating the hair, comprising a water-insoluble amino-containing compound, such as an amine or an amino-functionalized silicone; an ionizable metal salt, wherein the metal has a valence of at least II, such as magnesium chloride or zinc chloride; an ester compound having the general structural formula R.sub.1 --O--(A).sub.X --CH.sub.2 CO.sub.2 R.sub.2, wherein R.sub.1 is an alkyl group including from about eight to about 18 carbon atoms, R.sub.2 is an alkyl group including from one to about four carbon atoms, A is an alkylene oxide moiety wherein the alkylene group includes from one to about four carbon atoms, and X is a number in the range of from about 4 to about 20; and water, and wherein the composition has a pH of less than 7 and a particle size in the range of from about 0.1 nm to about 250 nm, to impart durable conditioning properties to treated hair is disclosed.

Claims54

Dependent claims

A hair-treating composition to impart hair conditioning properties to treated hair comprising from about 0.1% to about 6% by weight of a water-insoluble amino-containing compound having a water solubility of 0.5 g or less per 100 milliliters of water, the water-insoluble amino-containing compound selected from the group consisting of:

a) a monomeric primary amine, a monomeric secondary amine of a monomeric tertiary amine having the structure ##STR4## wherein when the amino-containing compound is a primary amine, R.sub.3 is an alkyl group or substituted alkyl group of between five and about 20 carbon atoms in length, and R.sub.4 and R.sub.5 are hydrogen atoms;
when the amino-containing compound is a secondary amine, R.sub.3 and R.sub.4 are alkyl groups or substituted alkyl groups of about 20 or less carbon atoms in length and wherein either R.sub.3 or R.sub.4 is at least five carbon atoms in length, and R.sub.5 is a hydrogen atom;
and when the amino-containing compound is a tertiary amine, R.sub.3, R.sub.4 and R.sub.5 are alkyl groups or substituted alkyl groups of about 20 or less carbon atoms in length and wherein either R.sub.3, R.sub.4 or R.sub.5 is at least five carbon atoms in length,
b) a diamine or an amino-containing polymer including primary or secondary amino-functionalities,
c) a trimethylsilylamodimethicone having the structure ##STR5## wherein X+Y is a number from about 50 to about 500, and the mole % amine functionality varies from about 0.7% to about 8%, and wherein R is an alkyl group having from 2 to 5 carbon atoms, and
d) combinations thereof;
from about 0.005% to about 4% by weight of an ionizable metal salt, wherein the metal of the ionizable metal salt has a valence of at least II;
an ester compound having the formula R.sub.1 --O--(A).sub.X CH.sub.2 CO.sub.2 R.sub.2, wherein R.sub.1 is an alkyl group including from about 8 to about 18 carbon atoms, R.sub.2 is an alkyl group including from one to about four carbon atoms, A is an alkylene oxide moiety wherein the alkylene group includes from one to about four carbon atoms and X is a number in the range of from about 4 to about 20, wherein the ester compound has an HLB value of from about 10 to about 20 and wherein the ester compound is present in an amount ranging from about 0.2% to about 15% by weight of the composition and in a ratio of the amount of ester compound to the amount of the water-insoluble amino-containing compound of at least about 0.75 to 1;
and water;
wherein the composition has a pH of less than 7.

7 more elements

A method of treating hair to impart hair conditioning properties to the hair comprising contacting the hair with a composition comprising from about 0.1% to about 6% by weight of water-insoluble amino-containing compound having a water solubility of 0.5 g or less per 100 milliliters of water, the water-insoluble amino-containing compound selected from the group consisting of:

a) a monomeric primary amine, a monomeric secondary amine or a monomeric tertiary amine having the structure ##STR7## wherein when the amino-containing compound is a primary amine, R.sub.3 is an alkyl group or substituted alkyl group of between five and about 20 carbon atoms in length, and R.sub.4 and R.sub.5 are hydrogen atoms;
when the amino-containing compound is a secondary amine, R.sub.3 and R.sub.4 are alkyl groups or substituted alkyl groups of about 20 or less carbon atoms in length and wherein either R.sub.3 or R.sub.4 is at least five carbon atoms in length, and R.sub.5 is a hydrogen atom;
and when the amino-containing compound is a tertiary amine, R.sub.3, R.sub.4 and R.sub.5 are alkyl groups or substituted alkyl groups of about 20 or less carbon atoms in length and wherein either R.sub.3, R.sub.4 or R.sub.5 is at least five carbon atoms in length,
b) a diamine or an amino-containing polymer including primary or secondary amino-functionalities,
c) a trimethylsilylamodimethicone having the structure ##STR8## wherein X+Y is a number from about 50 to about 500, and the mole % amine functionality varies from about 0.7% to about 8%, and wherein R is an alkyl group having from 2 to 5 carbon atoms, and
d) combinations thereof;
from about 0.005% to about 4% by weight of an ionizable metal salt, wherein the metal of the ionizable metal salt has a valence of at least II;
an ester compound having the formula R.sub.1 --O--(A).sub.X CH.sub.2 CO.sub.2 R.sub.2, wherein R.sub.1 is an alkyl group including from about 8 to about 18 carbon atoms, R.sub.2 is an alkyl group including from one to about four carbon atoms, A is an alkylene oxide moiety wherein the alkylene group includes from one to about four carbon atoms and X is a number in the range of from about 4 to about 20, wherein the ester compound has an HLB value of from about 10 to about 20 and wherein the ester compound is present in an amount ranging from about 0.2% to about 15% by weight of the composition and in a ratio of the amount of the ester compound to the amount of the water-insoluble amino-containing compound of at least about 0.75 to 1;
and water;
wherein the composition has a pH of less than 7.

7 more elements

Dependencies are inferred from the claim text.