Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Phosphorus containing other than solely as part of an...
Reexamination Certificate
2001-01-23
2002-11-19
Pryor, Alton N (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Phosphorus containing other than solely as part of an...
C514S474000, C514S639000, C514S703000
Reexamination Certificate
active
06482808
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present relates to 9 composition for hardening, strengthening and improving the structure (restructuring) materials containing keratin, especially damaged keratin fibers, as well as for the volume of fibers containing keratin, especially of human hair. The present invention also relates to a method for hardening, strengthening and improving the structure (restructuring) of material containing keratin, as well as a method for increasing the volume of fibers containing keratin.
2. Prior Art
Damage to keratin-containing materials due to environmental effects (such as high-energy irradiation), the physiological status (such as the age or health of the individual in question), mechanical and chemical effects are well known. The consequences are disadvantageous mechanical properties of the materials containing the keratin in question. Such damage of the internal structure of materials, containing keratin, is shown, for example, by the loss of hardness, strength, breaking strength, tear strength or bundle tensile strength.
In the case of keratinic fibers such as human hair, for example, such effects become noticeable especially by a lack of gloss, a reduced tear strength and poor combability. They are caused by aging processes, which are brought about physiologically, or induced by physical (weathering), mechanical (combing, brushing) and chemical effect. In the case of longer hair, these effects become noticeable particularly at the tips of the hairs. Chemical effects include, particularly, the bleaching, oxidative dyeing and permanent waving of hair, since these inherently aggressive oxidation or reducing agents show their full effect moreover mostly only in a strongly alkaline medium. However, other chemical influences, such as water containing chlorine or salts, also develop harmful defects on materials containing keratin.
The tear strength measurement is a conventional method for measuring the degree of damage to the hair. For this, a tension and extension measuring device is used to measure the force, which is required to tear individual hairs. From these individual, measured values of the tear strength, the so-called bundle tensile strength (BTS) is determined in that, initially, the tear strength for a hair diameter of 0.08 mm (average diameter) is calculated from the individual values, taking into consideration the respective hair diameter. By including the hair density, the data is finally converted into units of bundle tensile strength (cN/dtex). The larger the numerical value of the tear strength or the bundle tensile strength, the less is the damage to the hair.
SUMMARY OF THE INVENTION
Conventional commercial rinses and cures contain, as active substances, mainly cationic surfactants or polymers, waxes and/or oils. The greater the damage to the hair, the larger is the number of anionic groups at the surface. Cationic compounds are attracted electrostatically to oppositely charged surface, whereas oils and waxes interact with the hydrophobic groups of the keratin. An improvement in the structure of the interior of the hair can therefore not be attained with these care products.
It was therefore an object of the present invention to make available a preparation, especially a cosmetic preparation, which eliminates the disadvantages mentioned above.
Pursuant to the invention, this objective attained with a preparation containing at least one reducing, aliphatic or cyclic compound containing the grouping of atoms —(HO)C═C(OH)—, including its isomeric forms, as well as its salts and esters, as a means for hardening, strengthening and restructuring materials containing keratin.
The use, for example, of ascorbic acid in hair care agents or hair dyeing agents is known. For example, it is proposed in the European patent 0 401 454 to remove residue of hydrogen peroxide, which remain behind in human hair after an oxidative treatment, with an aqueous solution of ascorbic acid. Suitable for this are effervescent tablets, which contain ascorbic acid and are dissolved immediately before use in water, which is then used for rinsing the hair.
Furthermore, ascorbic acid is used in the German Offenlegungsschrift 1 444 2 lb in a liquid hair dyeing agent, in order to stabilize the otherwise unstable liquid agent. The oxidation hair dyeing agent of the German Offenlegungsschrift 3 642 097 also contains ascorbic acid as stabilizer.
All the more surprising was the finding that ascorbic acid can be used for improving the structure (hardening, strengthening, restructuring) of materials containing keratin, especially of fibers containing keratin, such as human hair.
Surprisingly, it was found that, due to the use of a preparation containing at least one reducing, aliphatic or cyclic compound, which contains an endiol of the grouping of atoms —(HO)C═C(OH)—, including its isomeric forms, as well as its salts and esters, changes the structure of keratin-containing materials (skin appendages such as keratin fibers, hair or nails) in such a manner, that a hardening, strengthening, increase in the breaking strength, tear strength or bundle tensile strength of the material in question takes place.
In association with this, not only does a restructuring (repair) of materials containing damaged keratin become possible, but also a protective effect, which counteracts damage to these materials before or during an exposure to appropriate noxious agents and is also capable of preventing or reducing the severity of such damage.
Aside from these harmful changes, which are brought about by exogenous noxious agents, the inventive use can also develop advantageous effects in conditions or changes in the structure of keratin-containing the materials, brought about by physiological processes, such as, material (hair or nails), containing keratin that is brittle due to aging, or fine hair, which may be inherited or acquired due to aging (baby hair, hair of old age).
Associated with this, it was furthermore possible to establish that, in the case of keratinic fibers, especially in the case of hair, an increase in volume, which may have an advantageous effect in hair styling, can be achieved by the inventive use. It is suspected that the action of increasing the volume is related causally with the hair hardening, hair strengthening or the hair restructuring action of the inventive composition.
Accordingly, the object of the present invention is the use of at least one reducing, aliphatic or cyclic compound, individually or as a mixture, containing the atomic grouping
—(HO)C═C(OH)—
including its isomeric forms, as well as its salts and esters, in a composition for hardening, strengthening and restructuring materials containing keratin.
The isomeric forms of these atomic groupings, containing the aliphatic and cyclic compounds in question, comprise epimeric and tautomeric forms.
Pursuant to the invention, preferably reductones are used.
The present invention also includes a method for hardening, strengthening and restructuring materials containing keratin and/or for increasing the volume of fibers containing keratin, wherein a composition, containing at least one atomic grouping
—(HO)C═C(OH)—
containing at least one reducing aliphatic, or cycling compound, including its isomeric forms, as well as its salts and esters, is brought into contact with the material, containing the keratin to be treated, and remains there after the application or is rinsed off or out after a suitable period of action with an aqueous agent.
Further embodiments of the present invention are given in the dependent claims.
Advantageously, for example, ascorbic acid or isoascorbic acid or its salts or esters, such as 6-O-palmitoyl ascorbate, ascorbyl phosphate, hydroxypropandial (triose reductone), 2,3-dihydroxy-2-cyclopenten-1-one (reductic acid), or mixtures of these compounds, can be used. The use of ascorbic acid or isoascorbic acid, especially ascorbic acid, is preferred.
When salts of ascorbic acid or isoascorbic acid are used, the free acid can also be produced in si
Grasser Beate
Hehner Ursula
Javet Manuela
Kripp Thomas
Lang Guenther
Pryor Alton N
Striker Michael J.
Wella Aktiengesellschaft
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