Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
1999-02-04
2001-07-24
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
C424S070220, C424S070240, C424S400000, C424S401000
Reexamination Certificate
active
06264929
ABSTRACT:
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The present invention concerns the use of fluorinated acids for neutralization of polymers with basic groups in hair treatment compositions. The subject matter of the invention also includes hair treatment compositions containing (A) a complex formed from at least one fluorinated acid and at least one polymer with basic groups or a complex of a salt of a fluorinated acid and a protonated polymer with protonated or quaternary amine groups and (B) at least one film-forming, hair-fixing polymer.
Hair styling products are those products, which provide the hair with hold, volume, elasticity, springiness and luster by means of polymer additives. In the first place they bring the hair into a shape (for example, gels), they impart stand to the hair (for example, hair sprays) or they give volume to the hair (for example, fixing foams).
That residue in the form of fine or gross flakes can be formed when the hair is pushed together by motions is a known problem with hair styling products. This occurs, e.g., when the hair is combed or brushed or also when the hair is contacted with materials, e.g. during motion of the head on a pillow. These residues are considered to be unaesthetic by consumers and make frequent hair washing necessary. Thus it is desirable to minimize the residue formation by hair styling products as much as possible without impairing the positive properties of these products.
It is known to improve the residue properties of hair fixing compositions by working materials, such as silicone oils, surfactant compounds, oils, or the like, into the formulation. The use of these materials has the disadvantage that the films formed have a reduced fixing effect. Either a comparatively larger amount of these compositions must be applied or the polymer content of these products must be increased in order to obtain a predetermined styling hold. These additive materials have the additional disadvantage that they load the hair and impart an oily fatty aspect to it.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved hair treatment composition, especially a hair fixing composition, which has good residue properties without the above-described disadvantages.
It has been found that the use of fluorinated acids in styling products, which contain at least one polymer with basic groups, provides an improvement in the residue properties of the composition, without degrading the fixing or causing loading of the hair.
The subject matter of the invention includes the use of fluorinated acids for neutralization of polymers with basic groups in compositions for treatment of the hair, especially in hair fixing compositions. Homopolymers or copolymers, which are formed from at least one type of monomer, which contains a basic group, especially a basic nitrogen atom, are the polymers with basic groups in the sense or meaning of the invention. Preferably these polymers contain no acidic or anionic groups and also have no amphoteric character, but only contain the basic groups.
The hair treatment composition according to the invention contains a complex formed from at least one fluorinated acid and at least one polymer with a primary or secondary amino group or a complex of a salt of a fluorinated acid and a protonated polymer with protonated primary or secondary amine groups. Polymers with primary or secondary amino groups in the sense of the invention are homopolymers or copolymers that are built up from at least one type of monomer, which contains a primary or secondary amino group. Also in these polymers it is a matter preferably of polymers which contain no acidic or anionic groups and also have no amphoteric character, but only contain basic groups.
The subject matter of the invention also includes a hair treatment composition with a content of
(A) a complex formed from at least one fluorinated acid and at least one polymer with basic groups or a complex of a fluorinated acid salt and a protonated polymer with protonated or quaternary amino groups, in which the protonated polymer is preferably free of acid or anionic groups, and
(B) at least one film-forming, hair-fixing polymer.
The film-forming hair-fixing polymer (B) preferably is contained in the hair treatment composition of the invention preferably in an amount of from 0.01 to 50 percent by weight, especially preferably in an amount of from 0.5 to 50 percent by weight.
By the term “complex” in the sense of the present invention an ion pair is understood which is formed from at least one anion of a fluorinated acid and a polymer with cationic groups.
The fluorinated acids or their salts are preferably present in an amount of from 0.01 to 10 percent by weight, especially preferably of from 0.05 to 5 percent by weight. The polymer with basic groups or the protonated polymer with protonated amine groups is preferably present in an amount of from 0.01 to 20 percent by weight. An aqueous or aqueous-alcoholic solvent system is preferred.
The fluorinated acid is preferably a compound having the general formula (I):
A—(CH
2
)
x
—(CF
2
)
y
—(CH
2
)
z
—B (I),
in which x and z, independently of each other, are each a number from 0 to 5, y is a number from 1 to 21, A is an acid group and B is either a fluorine atom or an acid group, with the proviso that z has the value 0 when B represents a fluorine atom. The acid groups A and B are preferably selected from the group consisting of —COOH, —SO
3
H, —OPO
3
H
2
and —OPO
2
H.
Suitable fluorinated acids are, especially, perfluorinated acids, such as trifluoromethanesulfonic acid, perfluoropropionic acid, trifluorobutyric acid, perfluoropentanoic acid, perfluorohexanoic acid, perfluoroheptanoic acid, perfluorooctanoic acid, perfluorononanoic acid, perfluorodecanoic acid, perfluorododecanoic acid, perfluoroglutaric acid, perfluorosebacic acid, perfluorooctanesulfonic acid, mixtures of perfluorinated phosphinic/phosphonic acids marketed by Clariant (Germany) under the trade name Fluowet® PL 80 and perfluorooctanoic acid marketed by 3M under the trade name Fluorad® FX 1001.
Other suitable fluorinated acids include partially fluorinated acids, such as 3H-decafluorohexanoic acids, 6-fluorohexanoic acid, 4,4,5,5,6,6,6-heptafluorohexanoic acid, 5,5,5-trifluorovaleric acid, 2H,2H-heptafluorovaleric acid, 5H-ocotafluorovaleric acid, 3H-octafluorovaleric acid and 2H-decafluoropentan-1-sulfonic acid.
Those compounds according to formula (I) which are soluble in aqueous or in aqueous/alcoholic solution with a water content of at least 10% are preferred. Those compounds according to formula (I) which are solution in purely aqueous solutions, such as perfluoropentanoic acid, perfluorobutyric acid, perfluoropropionic acid or perfluoroglutaric acid, are especially preferred.
The polymers with basic groups having a molecular weight of preferably at least 50,000 g/mol, especially preferably from 100,000 to 6,000,000 g/mol and contain nitrogen-containing groups, such as primary, secondary or tertiary amines. The advantage of the polymers with primary or secondary amine groups is the great affinity of the fluorinated acids for these groups. The resulting complex between the polymers and fluorinated acids is stabilized because the fluorine groups remain in the polymer film and do not migrate from it.
The basic groups are either located in the polymer chain or preferably are substituents in one or more monomers. The polymer with the basic groups can be natural or synthetic homo- or copolymers with amine substituted monomers units and, if necessary, with non-basic comonomers. Suitable polymers with basic groups are, for example, copolymers of amine-substituted vinyl monomers and non-amine substituted monomers. Amine substituted vinyl monomers include,, for example, dialkylaminoalkyl acrylates, dialkylaminoalkylmethacrylate, monoalkylaminoalkylacrylates and monoalkylaminoalkylmethacrylates, wherein the alkyl groups of these monomers are preferably lower alkyl groups, such as C
1
- to C
7
-alkyl groups, especially preferably C
1
- to
Chambettaz Daniel
Karlen Thomas
Dodson Shelley A.
Striker Michael J.
Wella Aktiengesellschaft
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