Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Cationic surfactant containing
Reexamination Certificate
2001-01-29
2003-03-25
Hartley, Michael G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Cationic surfactant containing
C424S070220, C424S070100, C424S070400, C424S047000
Reexamination Certificate
active
06537533
ABSTRACT:
BACKGROUND OF THE INVENTION
Rinse-out hair care conditioner compositions are typically used by contacting the hair with the hair care conditioner, working the conditioner into the hair, and then rinsing the conditioner from the hair. In the rinsing step it is possible for some of the conditioner composition to get into the eyes. Because conditioning agents that are traditionally used in conditioner compositions can be harsh and can cause tear formation, the rinsing step can cause discomfort to the consumer. For this reason, it would be desirable to provide hair care conditioner compositions that are non-irritating to the eyes. Compositions with such a property would be desirable for all consumers, and would be especially desirable for children who often cannot easily tolerate the eye irritation caused by traditional conditioner compositions.
The present invention provides effective hair conditioner compositions which are non-irritating to the eyes.
Publications and products which relate to the field of the invention are as follows:
Helene Curtis Japan Program Conditioner;
L'Oreal for Kids Conditioner;
U.S. Pat. No. 4,374,825 discloses hair conditioner compositions in the form of an emulsion comprising a volatile agent, a nonionic, water soluble thickening agent, a cationic hair conditioning agent and water.
U.S. Pat. No. 4,777,039 discloses a pearlescent hair conditioner composition based on a quaternary compound and a fatty alcohol, consisting of (A) 0.2 to 10 percent by weight of coconut fatty acid monoethanolamide, (B) 0.4 to 10 percent by weight of a straight-chain fatty alcohol with m carbon atoms (m=14 to 18), (C) 0.1 to 4 percent by weight of a quaternary compound of a specified formula (D) 70 to 99.3 percent by weight water and (E) 0 to 24 percent by weight of conventional cosmetic added substances.
U.S. Pat. No. 4,387,090 discloses hair conditioner compositions containing a volatile, liquid hair conditioning agent, which agent is thickened with a hydrophobic thickener.
U.S. Pat. No. 4,950,468 discloses a hair treating composition having excellent resistance to washing which comprises a dimethyl silicone rubber and a quaternary ammonium salt ingredient consisting of stearyltrimethylammonium chloride and behenyltrimethylammonium chloride.
U.S. Pat. No. 4,971,786 discloses a cosmetic composition for the treatment and care of the hair, containing, in a cosmetically acceptable medium: at least one cationic surfactant agent of a specified formula; at least one quaternized hydroxyalkylcellulose polymer; and at least one ethoxylated copolymer of dimethylsiloxane/3-hydroxypropylmethylsiloxane.
U.S. Pat. No. 5,213,793 discloses a water-in-oil emulsion hair conditioner composition containing no more than about one percent total solids, and at least one cationic hair conditioning agent, the hair conditioner composition preferably comprising from about five to about ten percent of a volatile oil, up to about three percent of a hydrophobic emulsifying agent, from about 0.01% to about 0.5% of the cationic hair conditioning agent, and water.
SUMMARY OF THE INVENTION
The invention relates to aqueous hair conditioner compositions that are non-irritating to the eye and which comprise:
a) a C20-C24 quaternary ammonium compound, which has ethosulfate or methosulfate or mixtures thereof as an anion;
b) a second C20-C24 quaternary ammonium compound, which has chloride or bromide or mixtures thereof as an anion;
c) a compound which is solid at room temperature and which is selected from the group consisting of a fatty alcohol, an ester, an amine, an amide, an acid, and a water-soluble polymer;
d) optionally a compound, which is liquid at room temperature, selected from the group consisting of a water insoluble emollient, a water insoluble lubricating agent, and a water insoluble conditioning compound; and
wherein a) and b) are present in a weight ratio of about 1:10 to about 10:1.
The invention also relates to a process for preparing a composition of the invention.
The invention also relates to a method for conditioning hair which comprises contacting said hair with a composition of the invention.
DETAILED DESCRIPTION OF THE INVENTION
As used herein % means weight % of the total composition unless otherwise specified. Degrees are in degrees Celsius unless otherwise specified. “Non-irritating to the eye” means little or no discomfort to the human eye. A “C20-C24 quaternary ammonium compound”, means a quaternary ammonium compound which has at least one saturated or unsaturated, straight-chain, or branched chain hydrocarbon substituent that has about 20 to about 24 carbon atoms.
The invention relates to aqueous hair conditioner compositions that are non-irritating to the eye and which comprise:
a) a C20-C24 quaternary ammonium compound, which has ethosulfate or methosulfate or mixtures thereof, as an anion;
b) a second C20-C24 quaternary ammonium compound, which has chloride or bromide or mixtures thereof, as an anion;
c) a compound, which is a solid at room temperature, selected from the group consisting of a solid fatty alcohol, an ester, an amine, an amide, an acid, and a water-soluble polymer;
d) optionally a compound, which is liquid at room temperature, selected from the group consisting of a water insoluble emollient, a lubricating agent, and a conditioning compound; and
wherein a) and b) are present in a weight ratio of about 1:10 to about 10:1.
More preferably, compositions of the invention can comprise:
a) about 0.1 to about 3% of a C20-C24 quaternary ammonium compound, which has ethosulfate or methosulfate or mixtures thereof as an anion;
b) about 0.1 to about 3% of a second C20-C24 or mixtures thereof quaternary ammonium compound, which has chloride or bromide as an anion;
c) about 0.1 to about 5% of a compound which is solid at room temperature and which is selected from the group consisting of a solid fatty alcohol having about 16 to about 24 carbon atoms, an ester, an amine, an amide, an acid, and a water-soluble polymer; and
d) optionally a compound, which is liquid at room temperature, selected from the group consisting of a water insoluble emollient, a lubricating agent, and a conditioning compound; and
wherein a) and b) are present in a weight ratio of about 1:10 to about 10:1.
The invention also relates to hair conditioner compositions as described above wherein a) and b) taken together are preferably present in said compositions in an amount of about 0.1% to about 5%.
The invention also relates to hair conditioner compositions as described above wherein c) is preferably present at from about 0.1% to about 5%.
The invention also relates to hair conditioner compositions as described above wherein c) is preferably present at from 0.1% to about 5% and is preferably at least one solid fatty alcohol or a water-soluble polymer.
Compositions of the invention are in the form of rinse-out conditioners, and may take the form of a liquid, lotion, mousse, cream, or aerosol product. As noted above, compositions of the invention are formulated so as to cause little or no irritation to the eye. Compositions of the invention are also esthetically pleasing.
What follows is a description of the ingredients used in the compositions of the invention.
C20-C24 Quaternary Ammonium Compounds
The compositions of the invention comprise at least two C20-C24 quaternary ammonium compounds. One such compound has ethosulfate or methosulfate or mixtures thereof as an anion. The other quaternary ammonium compound has bromide or chloride or mixtures thereof as an anion. The weight ratio of the first quaternary ammonium compound to the second quaternary ammonium compound is about 1:10 to about 10:1.
It has unexpectedly been found that the use of at least one C20-C24 quaternary ammonium compound which has ethosulfate or methosulfate or mixtures thereof, as an anion; in combination with at least one other quaternary ammonium compound which has bromide or chloride or mixtures thereof as an anion; results in hair care conditioner compositions which provide the same conditioning benefit as composition
Haghighatian M.
Hartley Michael G.
Honig Milton L.
Unilever Home & Personal Care USA , division of Conopco, Inc.
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