Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Reexamination Certificate
1999-05-05
2001-07-24
Hardee, John (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
Reexamination Certificate
active
06265372
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a detergent composition which is primarily used on the skin, and more particularly to a detergent composition which provides a comfortable and smooth touch on the skin after cleansing.
BACKGROUND OF THE INVENTION
Conventional skin detergents are used to wash away dirt or soil caused by such substances as sebum or sweat. A variety of approaches have been developed to add various ingredients in a detergent composition so as to provide smooth and moisturized touch on the skin after cleansing. It has been proposed to use silicones as such ingredients since they which can be deposited on the skin after rinsing the detergent composition to improve smooth touch of the skin. However, it is very difficult to keep a dispersed, incompatible silicone material suspended in the composition and the total product stable.
It is therefore an object of the present invention to provide a stable detergent composition which provides unique, comfortable and smooth touch on the skin after cleansing.
SUMMARY OF THE INVENTION
It has been surprisingly found that a detergent composition comprising a glycerol derivative, a silicone and a surfactant, provides a unique, comfortable and smooth touch on the skin after cleansing and is stable during storage (e.g., there is no separation of the ingredients therein.)
The present invention relates to a detergent composition comprising:
A) a glycerol derivative represented by the following formula (1)
wherein one of Z
1
and Z
2
represents R
2
—Y— and the other of Z
1
and Z
2
represents —OH and wherein R
1
and R
2
, which may be the same or different, represent hydrocarbon groups having C3-C12 straight or branched chain or hydrocarbon groups having C14-C20 branched chain respectively and X and Y represent an oxygen atom or
(B) at least one silicone; and
(C) at least one surfactant selected from the group consisting of an anionic surfactant, an amphoteric surfactant and a nonionic surfactant,
wherein component (A) and component (C) are present in a ratio of from 1:1 to 1:100, by weight.
Various other objects, features, and attendant advantages of the present invention will be more fully understood from the following detailed description.
DESCRIPTION OF THE PREFERRED ENBODIMENTS
Component (A)
An essential component of the present composition is a glycerol derivative represented by the following formula (1)
wherein one of Z
1
and Z
2
represents R
2
—Y— and the other of Z
1
and Z
2
represents —OH and wherein R
1
and R
2
, which may be the same or different, represent hydrocarbon groups having C3-C12 straight or branched chain or hydrocarbon groups having C14-C20 branched chain respectively and X and Y represent an oxygen atom or
Preferred glycerol derivatives shown by the above formula (1) are those, 1) R
1
and R
2
of the formula (1) represent C4-C12 hydrocarbon groups respectively, 2) at least one of R
1
and R
2
of the formula (1) comprises a branched aliphatic chain, or 3) R
1
and R
2
of the formula (1) represent C10-C20 hydrocarbon groups respectively and at least one of R
1
and R
2
comprises a branched aliphatic chain. These glycerol derivatives may be used alone or used as mixtures thereof to produce a stable detergent composition which provides very comfortable and smooth touch on the skin after cleansing.
Glycerol derivatives useful herein include 1,3-dialkyl glyceryl ethers represented by the following formula (2)
wherein R
1
and R
2
are as defined above.
Other glycerol derivatives useful as component (A) are 1,3-diacyl glycerols represented by the following formula (3)
wherein R
1
and R
2
are as defined above.
In general, commercially available acyl glycerols are mixtures of mono-glycerol esters and di-glycerol esters, therefore those mixtures can be used as component (A).
The glycerol derivatives of component (A) is present at a level of from about 1 to about 20 weight % (hereinafter referred to as %), preferably from about 0.5 to about 10% in the detergent composition. Above all, incorporation of from about 1 to about 10% of the above described glycerol derivatives 1) in combination with from about 0.5 to about 5% of the above described glycerol derivatives 3) into the detergent composition improves the stability of the composition remarkably.
Component (B)
Component (B) may include a wide variety of silicones, such as dimethyl silicone, cyclic dimethyl silicone, methyl hydrogen silicone, polyether modified silicone, methyl phenyl silicone, and stearoxy modified silicone as well as silicone emulsions of dimethyl silicone and amodimethicones and the like.
Preferred silicones are high molecular weight dimethyl polysiloxanes, e.g. oil type with a viscosity of from 10,000 to 100,000 centipoise and emulsion type gum with a viscosity of from 5,000,000 to 15,000,000 centipoise.
The silicone of component (1) is present at a level of from about 0.5 to about 50%, preferably from about 1 to about 20% in the detergent composition.
Component (C)
Component (C) is at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants.
Anionic surfactants useful herein include alkyl phosphate, alkyl sulfonate, alkyl sulfate, acylated amino acid salt, polyoxyethylene alkyl ether sulfate, alkylbenzene sulfonate, N-acyl-N-methyl taurine salt, &agr;-olefin sulfonate, higher fatty acid ester sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid soap and salts of these compounds. Preferred examples of anionic surfactants are polyoxyethylene lauryl ether sulfate, N-lauroyl-&bgr;-alanine salt, monoalkyl phosphate, polyoxyethylene lauryl ether acetate and polyoxyethylene lauryl amide acetate. Suitable salts include metal salts, such as sodium, potassium or magnesium salts, ammonium salts, and organic ammonium salts, such as monoethanol ammonium, diethanol ammonium or triethanol ammonium salts.
Amphoteric surfactants useful herein include carbobetaine, amidobetaine, sulfobetaine, hydroxy sulfobetaine, amidosulfobetaine, phosphobetaine, imidazolium betaine and amine oxide. Preferred examples of amphoteric surfactants are amidopropyl betaine, laurylhydroxysulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazoliumbetaine and lauryldimethylamine oxide.
Nonionic surfactants useful herein include polyoxyethylene fatty acid ester, polyoxyethylene hardened castor oil, polyoxyethylene sorbitan fatty acid ester, glycerol fatty acid ester, polyoxyethylene alkyl ether and polyoxyethylene polyoxypropylene glycol. Preferred examples of nonionic surfactants are polyethyleneglycol monostearate, polyoxyethylene lauryl ether and polyoxyethylene (160) polyoxypropylene (30) glycol.
The content of the component (C), which may vary depending on the types and properties of the aimed detergent composition, is from about 2 to about 60%, preferably from about 10 to about 50% in the detergent composition. Above all, incorporation of at least about 5%, preferably at least about 12% of an anionic surfactant as component (C) into the detergent composition highly improves the stability of the composition. The surfactant of component (C) may be used alone, or preferably used as mixtures of anionic, amphoteric and nonionic surfactants.
In the detergent composition of the present invention, the component (A) and the component (C) are present in a ratio of from 1:1 to 1:100, preferably from 1:2 to 1:50, more preferably from 1:3 to 1:20, by weight.
Further, a variety of conventional detergent ingredients can be incorporated into the detergent composition of the present invention in addition to the above described essential components, to the extent the particular ingredient does not adversely effect the function and properties of the detergent composition. These conventional ingredients may include viscosity regulators, such as anionic polymers nonionic polymers or cationic polymers; moisturizers such as polyalcohols; foaming agent such as amides or fatty acids; preservatives; antioxidants; perfumes; and pigments.
The detergent compositions of t
Morioka Tomoki
Nozaki Toshio
Sekiguchi Takashi
Birch & Stewart Kolasch & Birch, LLP
Hardee John
Kao Corporation
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