Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1994-02-03
1995-12-05
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424 701, 424 702, 424 704, 424401, 132202, A61K 706, A61K 700
Patent
active
054726972
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a composition for treating keratinous fibers, and more particularly, to a composition for treating keratinous fibers which is capable of imparting favorable firmness and elasticity to keratinous fibers such as hair without giving rough feeling to the texture of the fibers, and also to a treatment method using the composition.
BACKGROUND ART
Several methods have conventionally been proposed to improve the firmness and elasticity of keratinous fibers such as hair, wool and other keratinous fibers for knitting or weaving. The following 1) to 4) may be mentioned as examples of such methods: are adsorbed onto the surface of the keratinous fiber (Japanese patent publication "Kokai" Nos. 52-7449 and 58-216113), publication "Kokai" Nos. 55-108812, 58-109405 and 60-87208), and water-insoluble or sparingly soluble salt inside the fiber (Japanese patent publication "Kokai" No. 1-233208).
However, these methods are not necessarily successful. In method 1) above, when the keratinous fibers are shampooed, the firmness and elasticity imparted to the fibers will easily be lost, because the polymers which had been adsorbed onto the surface of the fibers are washed away. In method 2) above, sufficient effect cannot be obtained because the protein hydrolysates to be used generally have molecular weights over several thousands, and this means that only a slight amount of protein hydrolysates can be permeated into the keratinous fiber. In method 3), metal ions are generally used as a shrinking agent. The shrinking effect is obtained from a chelating reaction between the metal ion and a functional group (mainly a carboxyl group) in the keratinous fiber. Therefore, when the keratinous fiber is shampooed with an ordinary shampoo which contains a chelating agent such as sodium ethylenediaminetetraacetate, a chelate exchanging reaction takes place, which causes a gradual extinguishment of the shrinking effect. Method 4) is good in that a certain degree of firmness and elasticity can be imparted, and they can last after the fibers undergo several shampooing. However, when the concentration of the active ingredients is raised with an aim to improve the effect, considerable amounts of water-insoluble or sparingly soluble salts deposit on the surface of the hair fiber, causing objectionable frictional and rough feeling of the hair.
Accordingly, compositions for treating keratinous fibers which can provide the fibers with excellent firmness and elasticity while avoiding objectionable frictional or rough feeling to the touch have still been desired.
DISCLOSURE OF INVENTION
Accordingly, the present invention provides a composition for treating keratinous fibers, which comprises: permeating into the keratinous fibers and can form a water-insoluble or sparingly soluble complex together with said metal ion of component (A), and fibers, and which reacts with said metal ion of component (A) to form a water-soluble complex.
The present invention also provides a method of treating keratinous fibers, where the fibers are treated with the above-mentioned first agent, and after a certain period of time, they are treated with the above-mentioned second agent.
BEST MODE FOR CARRYING OUT THE INVENTION
Examples of the metal ions which are components of the first agent (A) of the present composition include Mg.sup.2+, Ca.sup.2+, Zn.sup.2+, Ag.sup.+, Al.sup.3+, Ba.sup.2+, Mn.sup.2+, Fe.sup.2+, Fe.sup.3+, Ni.sup.2+, and the like. These ions are used in a form of a water-soluble salt such as chlorides, hydroxides, nitrates, sulfates, phosphates, acetates and carbonates.
These metal ions are used singly or in combination of two or more. It is preferred that the metal ions be incorporated into the first agent in amounts of from 0.05 to 20.0% by weight (hereinafter simply referred to as %), and especially 0.1 to 10.0% based on the total weight of the first agent. Amounts less than the above range will cause insufficient effects in providing the firmness, elasticity and volume of the keratinous fibers
REFERENCES:
patent: 4259204 (1981-03-01), Homma
patent: 4300900 (1981-11-01), Putzar
patent: 4306873 (1991-12-01), Lapidus
patent: 4614200 (1986-09-01), Hsiung
patent: 4828750 (1989-05-01), Simion
patent: 4834971 (1989-05-01), Klenk
patent: 4898725 (1990-02-01), Hoeffkes
patent: 5009813 (1991-04-01), Watanabe
patent: 5045308 (1991-09-01), Spiegel
patent: 5254336 (1993-10-01), Hoshowski
Hirano Yuji
Kure Naohisa
Gardner Sally
Kao Corporation
Page Thurman K.
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