(en)INDAMINE SALTS, HAVING THE FORMULA (1-((4-(R3-N(-R4)-PHENYL)-N=),2-R,3-R5,4-(R1-N(+)(-R2)=) 5-R6-CYCLOHEXA-2,5-DIENE)N (X)N(-) WHEREIN R1 AND R2 ARE LOWER ALKYL, R3 AND R4 ARE LOWER ALKYL WHICH CAN BE SUBSTITUTED WITH HYDROXY, AMINO OR ACYLAMINO, R5 AND R6 ARE HYDROGEN, LOWER ALKYL OR LOWER ALKOXY, R IS AMINO, ACYLAMINO OR HYDROXY, N IS 1-2 AND XN(-) IS AN ANION, ARE USEFUL FOR DYEING KERATINOUS FIBERS AND, IN PARTICULAR, HUMAN HAIR, THESE SALTS CAN BE IN A TAUTOMERIC FORM OF THAT REPRESENTED ABOVE.

1.ApplicationNumber: US-18045671-A
1.PublishNumber: US-3824075-A
2.Date Publish: 19740716
3.Inventor: ESTRADIER F,FR
KALOPISSIS G,FR
BUGAUT A,FR

4.Inventor Harmonized: ESTRADIER F()
KALOPISSIS G()
BUGAUT A()

5.Country: US
6.Claims:
(en)INDAMINE SALTS, HAVING THE FORMULA (1-((4-(R3-N(-R4)-PHENYL)-N=),2-R,3-R5,4-(R1-N(+)(-R2)=) 5-R6-CYCLOHEXA-2,5-DIENE)N (X)N(-) WHEREIN R1 AND R2 ARE LOWER ALKYL, R3 AND R4 ARE LOWER ALKYL WHICH CAN BE SUBSTITUTED WITH HYDROXY, AMINO OR ACYLAMINO, R5 AND R6 ARE HYDROGEN, LOWER ALKYL OR LOWER ALKOXY, R IS AMINO, ACYLAMINO OR HYDROXY, N IS 1-2 AND XN(-) IS AN ANION, ARE USEFUL FOR DYEING KERATINOUS FIBERS AND, IN PARTICULAR, HUMAN HAIR, THESE SALTS CAN BE IN A TAUTOMERIC FORM OF THAT REPRESENTED ABOVE.

7.Description:
(en)United States Patent US. Cl. 8-10 12 Claims ABSTRACT OF THE DISCLOSURE Indamine salts, having the formula alkyl which can be substituted with hydroxy, amino or acylamino, R and R are hydrogen, lower alkyl or lower alkoxy, R is amino, acylamino or hydroxy, n is 1-2 and X is an anion, are useful for dyeing keratinous fibers and, in particular, human hair. These salts can be in a tautomeric form of that represented above.
The present invention relates to novel indamine salts of the general fomula:
(I) R Ra Ra R1 wherein R and R each independently represent lower alkyl containing 1 to 4 carbon atoms; R and R, each independently represent lower alkyl containing 14 car- -bon atoms and substituted with a member selected from the group consisting of hydroxy, amino and acylamino wherein the acyl moiety has 1 to 4 carbon atoms; R and R each independently represent hydrogen and lower alkyl containing 1-4 carbon atoms and lower alkoxy containing 1-4 carbon atoms; R is selected from the group consisting of amino, acylamino wherein the acyl moiety has 1 to 4 carbon atoms and hydroxy; n is a whole number equal to 1 or 2; X is an anion selected from the group consisting of persulfate, perchlorate, chloride, bromide and Cl Zn-, it being understood that these com- 50 pounds can be in a form tautomeric of that shown by formula (I).
The indamine salts of formula (I) can be prepared by condensing a paraphenylenediamine having the formula:
wherein R and K, have the meaning given above, on a compound having the formula:
(III) R wherein R R R R and R also have the meaning above. The condensation reaction can be carried out in a reaction medium comprising a member selected from the group consisting of an aqueous, aqueous alcoholic or aqueous acetonic alkaline medium, in the presence of an oxidizing agent such as hydrogen peroxide or a water-soluble inorganic peroxy salt such as an alkaline persulfate. The initial reactants, represented by formulae (II) and (III) above can be used in the form of their salts. Sub- .sequently there is added to the reaction medium a salt of an acid corresponding to the desired indamine salt which acid salt is more soluble in Water than the desired indamine salt, thereby precipitating the latter from the reaction medium.
The added acid salt can be, for example, an alkaline persulfate such as sodium, potassium or ammonium persulfate, an alkaline perchlorate such as sodium, potassium or ammonium perchlorate, an alkaline chloride or bromide such as sodium, potassium or ammonium chloride or bromide or again zinc chloride when a double salt is desired.
When an alkaline persulfate is used as the oxidizing agent, the resulting indamine persulfate, which is often less soluble in water, precipitates as soon as the condensation is performed. However, it has been found that it is often preferable, in order to obtain indamine persulfates in a greater state of purity, to process in two sages. In the first stage, the condensation reaction is effected in the presence of hydrogen peroxide. In the second stage, an alkaline persulfate including ammonium persulfate is added to the reaction mixture.
Representative paraphenylenediamines of formula (II) that can be used in the process according to the present invention include N,N diethyl paraphenylenediamine, N,N-dimethyl paraphenylenediamine, N,N (ethyl, B- piperidino ethyl) paraphenylenediamine, N,N-(ethyLflacetaminoethyl) paraphenylenediamine and N,N- (di-phydroxyethyl) paraphenylenediamine.
Representative compounds of formula (III) that can be used in the process according to the present invention include metadiethylaminophenol, N,N dimethyl metaphenylene-diamine and meta N,N-(diethyl)amino acetanilide.
The condensation reaction is generally carried out at atmospheric pressure and at a temperature ranging from about -10 C. to 30 C. Generally, the paraphenylenediamine and the compound represented by formula III are employed in essentially equimolar amounts. When the reaction medium is an aqueous alkaline solution, an alkalinizing agent such as ammonia or the like is present in amounts such that the pH is about 8 to 11. When the reaction medium is an aqueous alcohol solution, the alcohol employed is generally a lower alkanol having l-4 carbon atoms and is present in the aqueous solution in amounts of about 10 to 30 percent by weight thereof. When the reaction medium is an aqueous acetonic solution, acetone can comprise between about 10 to 30 weight percent thereof. The oxidizing agent is generally present in stoichiometric amounts when this oxidizing agent is a persalt, and in excess when it is hydrogen peroxide.
Further it is possible to prepare the indamine salts of formula (I) by condensing a compound of formula (III) on a nitroso derivative having the formula:
"medium, the nitroso derivative (IV is preferably used in the form of its hydrochloride or hydrobromide at ,a temperature between 30 and 60 C., thereby isolating a corresponding indamine chloride or bromide after salting out, if necessary. I
When the above condensation is effected in an ethanol medium, the nitroso derivative of formula (IV) is used in unsalified form, and the condensation is effected at reflux in the presence of zinc chloride, thereby producing the double chloride of zinc and the indamine of formula (I), the zinc chloride being present in essentially stoichiometric amounts to produce said indamine salt.
Representative nitroso derivatives of formula (IV) usefully employed in this embodiment of the present invention include p-nitroso N,N-diethylaniline, p-nitroso N,N- dimethylaniline, p nitroso N,N -(ethyl,;8-acetylaminoethyl) aniline, p-nitroso, N,N (di-fl-hydroxyethyl) aniline and p-nitroso N,N-(ethyl, fl-piperidinoethyl) aniline.
The indamine salts according to the present invention constitute dyes which have a great dyeing power in a broad pH range, which can vary from pH 3 to pH 10. Because of their great afiinity for keratinous fibers, very slight concentrations of these dyes are sufiicient to obtain intense shades, which explains why these salts which are relatively insoluble in water are perfectly usable.
Consequently, the present invention also provides novel dye composition for keratinous fibers, in particular human hair, characterized by the fact that it contains in solution at least one compound represented by formula (I).
The dye compositions according to the invention can contain only the compounds of formula (I), in which case they make it possible to obtain on white hair shades that go from blue to green, after an extremely short application period, of the order of three minutes at ambient temperature.
Because of the great dyeing power of the novel compounds of formula (I) their concentration in the compositions according to the invention can, as said above, be extremely slight, of the order of 0.002% by weight. However, this concentration can vary from 0.002 to 1% by weight.
The compositions according to the invention can also contain other direct dyes, for example, anthraquinone dyes, nitro dyes of the benzene series, indoanilines, indophenols or indamines other than those of formula (I).
The compositions according to the invention make it possible to obtain very luminous shades rich in glints, which often give the hair a pearly appearance.
The dye compositions according to the invention are generally in the form of aqueous or aqueous alcohol solutions which can be easily prepared by dissolving in water one or more compounds of formula (I) in mixture or not with other direct dyes. However, they can also contain thickeners and be in the form of creams or gels. When an alcohol solution is employed generally the alcohol will be a lower alkanol such as ethanol or isopropanol, the alkanol being present in the aqueous solution in amounts of about 20 to 70 percent by weight thereof.
The compositions according to the invention can further contain various ingredients usually used in cosmetics, for example, wetting agents, dispersing agents, swelling agents, penetrating agents, softeners o'r perfumes. They can also be packaged under pressure in aerosol bombs or containers, together with a conventional aerosol propellant such as dichlorodifiuoromethane, trichloromonofluoromethane and their mixtures. Obviously, other conventional aerosol propellants can also be used.
The pH of the dye compositions according to the in- 'vention can vary from 3 to 10. Preferably, however, the pH ranges between 4 and 9.
Dyeing of keratinous fibers, in particular human hair,
. with dye compositions according to the invention canbe performed in the usual way by application of the composition to the fibers to be dyed, the composition being left in contact with the fibers for a time varying from 3 to 30 minutes. Following this application, the fibers are rinsed, and if desired, washed. Thereafter, the-thus treated fibers are dried; I 1
In another embodiment 'of the present invention, the novel indamine salts can be employed in the production of capillary hair-setting lotions. These lotions comprise an aqueous alcohol solution, at least a cosmetic film forming resin and atleast one indamine salt of formula (I). The amount of indamine salt present in'the hairsetting lotion of the present invention can be extremely low. Such an amount ranges generally between about 0.002 to 0.5% by weight of the'total hair-setting lotion composition. Representativev cosmetic resins that can be employed in the hair-setting lotion composition of the present invention include, for instance, polyvinylpyrrolidone having a molecular. weight ranging" from about 10,000-70,000, copolymer of crotonic acid and vinyl acetate, copolymer of vinylpyrrolidone and vinyl acetate wherein the ratio of PVP to VA ranges between 50-70z50-30, copolymer of maleic anhydride and butylvinyl ether and the like. These resins are used in a proportion of about 1 to 3% by weight of the hair-setting lotion composition.
The alcohols suitable for the preparation of the hairsetting lotions of the invention are low molecular weight alkanols, preferably, ethanol or isopropanol, which are present in amounts of about 20 to 50% by weight of the total hair-setting lotion composition. The pH ofthe hairsetting lotion of the invention can range fromS-IO, and preferably between about 6-8.
Hair-setting lotions of the present invention that contain only the dyes of formula (I) are shading compositions which make it possible to impart to the hair extremely luminous glints and often give it a pearlyor iridescent appearance.
However, the hair-setting lotions of this in'vention' can also contain other direct dyes, for example, anthra'quinone dyes, nitro dyes of the benzene series, indoanilines, indophenols or again other indamines.
These hair-setting lotions are used in the customa ry way by applying the same to wet human hair which has been previously washed and rinsed, followed by rolling'up and drying of the hair. I p
The following examples are intended to illustrate'the various aspects of the present invention. Unless otherwise specified, all parts and percentages are by weight and all temperatures are expressed in degrees centrigrade.
EXAMPLE 1 The double chloride of zinc and N-[4-(ethyl, fi-piperidino ethyl)amino phenyl]3-hydroxy benzoquinoneimine N,N'-diethyliminium having the below formula is prepared as follows:
0.012 mole (3.1 g.) of paranitroso N,N-(ethyl',5-piperidinoethyl) aniline and 0.012 mole (1.9 g.) of metadiethylaminophenol are dissolved in 20 cc. of absolute ethanol. 1.7 g. of zinc chloride are added to this solution and the reaction mixture is heated for 30 minutes at reflux. After cooling 4.8 g. of the above double salt of zinc and indamine precipitate and are filtered from the reaction medium, washedwithvethanol and dried under a vacuum. The product is chromatographically pure.
EXAMPLE 2 The double chloride of zinc and N-[4-(ethyLB-acetylaminoethyDamino pheny1]3 acetylamino benzoquinoneimine N, -dimethyliminium having the below formula is prepared as follows: rinooorn \CHI NHCOCH; Cm N NQN To a solution of 0.01 mole (2.35 g.) of paranitroso N,N-(ethyl, acetylaminoethyl) aniline in 10 cc. of absolute ethanol there are added, on the one hand, 0.01 mole (1.78 g.) of 3-dimethylamino acetanilide in 10 cc. of absolute ethanol and, on the other hand, 2 g. of zinc chloride. The resulting mixture is heated at reflux for 30 minutes. 2 g. of the double zinc and indamine salt precipitate, are cooled and filtered from the reaction mixture. This double salt, after washing with ethanol, is chromattographically pure.
EXAMPLE 3 The double chloride of zinc and N-[ (4-dimethylamino) phenyl13 hydroxy benzoquinoneimine N',N' diethyliminium having the below formula is prepared as follows:
EXAMPLE 4 The double chloride of zinc and N-[4-(ethyLB-acetylaminoethyl)amino phenyl] 3 hydroxy benzoquinoneimine N, '-diethyliminium, having the below formula,
is prepared as follows:
C2Hs OH a 02H: CHz-CHr-NH C CH:
0.02 mole (4.7 g.) of paranitroso N,N-(ethyLB-acetylaminoethyl) aniline and 0.02 mole (3.3 g.) of metadiethylamino phenol are dissolved in 30 cc. of absolute ethanol. To this solution are added 3 g. of zinc chloride and the reaction mixture is heated for 30 minutes at reflux. After cooling, 8.4 g. of the above double zinc and indamine chloride are filtered from the reaction mixture, washed with ethanol and dried. This product is chromatographically pure.
EXAMPLE 5 The monohydrate of the chloride of N-[(4-dimethylamino)phenyl] 3 acetylamino benzoquinoneimine N, N'-dimethyliminium having the below formula is prepared as follows:
NHCOCH:
CH3 /CH: CH; CE:
0.2 mole (37.3 g.) of paranitroso N,N-dimethylaniline hydrochloride is dissolved in 380 cc. of water at 50. To this solution is rapidly added, with stirring, 0.2 mole (35.6 g.) of meta N,N-dimethylaminoacetanilide in 400 cc. of water at 50. The reaction mixture is kept at 50 for two hours. 20 g. of sodium chloride are then added. After cooling at 5 for four hours, 53 g. of the above iminium chloride, crystallized in monohydrade form, are filtered from the reaction mixture, washed with a little water and then with acetone. This product is chromatographically pure.
Analysis.Calculated for C H N OCLH 0 (percent): C, 59.25; H, 6.85; N, 15.30. Found (percent): C, 59.00, 58.92; H, 6.75, 6.78; N, 15.10, 15.07.
EXAMPLE 6 The perchlorate of N [(4-dimethylamino)phenyl]3- amino benzoquinoneimine N',N' dimethyliminium having the below formula is prepared as follows:
0.01 mole (2.09 g.) of N,N dimethylparaphenylenediamine dihydrochloride and 0.05 mole (l g.) of N,N-dimethylmetaphenylenediamine dihydrochloride are dissolved in 20 cc. of water to which have been added 5 cc. of ammonia at 22 B. 20 cc. of 20 volume hydrogen peroxide are immediately added to the mixture. It takes on an intense blue coloring. After 10 minutes at ambient temperature, 10 g. of sodium perchlorate are introduced little by little with stirring. The above indamine perchlorate precipitates in the form of garnet crystals whose chromatogram shows, as an impurity, traces of N,N-dimethylparaphenylenediamine. After washing with ethyl acetate, the above indamine perchlorate is chromatographically pure.
Analysis.Calculated for C H N.,O Cl (percent): C, 52.10; H, 5.69; N, 15.19. Found (percent): C, 52.21, 51.97; H, 5.74; 5.72; N, 15.24, 15.16.
EXAMPLE 7 The persulfate of N [(4 dimethylamino)phenyl] 3- acetylamino benzoquinoneimine N',N-dimethyliminium is prepared as follows:
0.05 mole (1.05 g.) of N,N-dimethylparaphenylenediamine dihydrochloride is dissolved in 10 cc. of water to which have been added 0.8 cc. of ammonia. 0.05 mole (0.89 g.) of dimethylaminometaccetanilide is dissolved in 5 cc. of water to which have been added 5 cc. of acetone. The two solutions are mixed and cooled to 0. There is then added, with stirring, 0.05 mole (1.19 g.) of ammonium persulfate in 10 cc. of water. After 10 minutes, there is filtered therefrom in the form of green crystals with golden glints, the above indamine persulfate, which, after washing with a little ice water, is chromatographically pure.
EXAMPLE 8 The following hair-setting lotion composition is prepared:
Triethanolamine, q.s.p. pH 7.
This hair-setting lotion when applied to bleached hair imparts thereto a forget-me-not blue shade with pearly glints.
:.- pared;
Dye'of Example 3 i H 7 a A Laa I-TZhe, followingghair-settingj-lotion composition is pre- Water, q.s.p 100 Triethanolamine, q.slp. pH-7.
This hair-setting lotion when applied to bleached hair -imparts thereto a very luminous intense turquoise blue shade.
EXAMPLE 10 The following dye composition is prepared:
G. Dye of Example 1 0.002 Water, q.s.p. 100
Ammonia at 22 B. q.s.p. pH 10.
This composition when applied to bleached hair for ten minutes imparts thereto, after rinsing and shampooing, a silvery blue shade.
EXAMPLE 11 The following hair-setting lotion composition is prepared:
Dye of Example 4 v 0.1
Crotonic acid-vinyl acetate copolymer (90% vinyl acetate, 10% crotonic acid-molecular weight 45,000 to 50,000)
'Isopropyl alcohol 50 Water, q.s.p. 100
T riethanolamine, q.s.p. pH 7.
This hair-setting lotion when applied to bleached hair imparts thereto a very pearly light blue shade.
EXAMPLE 12 The following dye composition is prepared:
G. Dye of Example Q 0.2 'Water, q.s.p 100 The pH of the solution is equal to 6.5.
v This dye composition when applied to 95% naturally .white hair for minutes imparts thereto, after rinsing and shampooing, a very intense green shade.
EXAMPLE 13 The following dye composition is prepared:
G. Dye of Example 3 0.2 Ethanol-96 titer 25 Water, q.s.p. 100
10% lactic acid solution, q.s.p. pH 3.3.
This dye composition when. applied to 95 naturally white hair for minutes imparts thereto, after rinsing and shampooing, a light emerald green shade.
EXAMPLE 1 4 The following hair-setting lotion is prepared; 1 r. a
Dyeof Example 2 0.15 *Crotonic acid-vinyl acetate copolymer;(90% vinyl;
acetate, 10% crotonic acid-molecular weight 45,000 to 50,000) 2- Ethanol-QG" titer, q.s.p. 50. Water, q.s.p. 100 Triethanolamine, q.s.p. pH 7.
This hair-setting lotion when applied to bleached hair imparts thereto a light green shade with golden glints.
This a "co osition and'shampooing, a'deep violet beige s Nitroparaphenylenediamine Water, q.s.p.
"EXAMPLE s N-[2',4'-diamino, 5'methoxy)phenyl] benzo'quinone imine Ethanol Water, q.s.p. 1;;
lien applied 10 minutes to 95% "naturally white hair imparts thereto, after rinsing hadervffl .1 A E"i The following dye composition. is prepared: a
Isopropanol Ammonia at 22 B, q.s.p. pH 10.5. v
This dye composition whedapplied for 10 minutes to 95 naturally white hair imparts thereto, after ginsing and shampooing, an intense yellow green shade. p
The following hair-setting lotion composition is prepared:
' G. Dye of Example 5 0.2 Crotonic acid-vinyl acetate copolymer vinyl v acetate, 10% cnotonic; acid-; mol cul ar; Weight" 45,000 to s0,000 -t Ethanol 96 titer, q.s.p.-50 1 V Triethanolamine, q.s.p, 1171.
This hair-setting 10am fwheil applied to"- light brown hair, imparts thereto-"a -"de'ep'brown= shadewith. green glints. L
The following dyelco mpo si-tion is prepared? V I H Dye of Example 4 c p 3 Butylglycol y 5 Lauryl alcohol oxyethylenated with 10.5 molsf of This dye composition when appliedto 60% naturally white hair for-20 minutes imparts thereto, after rinsing and shampooing,a graygreen shade.
EXAMPLE 19 The following dye composition: is prepared:
Dye of Example 6 1 I Ethanol-96 titer j -g; 25 Water, q.s.p.
This dye composition h-.l1 as a pH of 8, is applied to naturally white""'hair" for a brief period.
"After'rin'sing an'd shampooing, a silvery'green blue shade [is' obtained.:.%. r 1' The following hair-setting lotion composition is prepared:
Crotonic acid-vinyl acetate copolymer (90% vinyl acetate, 10% crotonic acid-molecular weight,-
45,0000; 50,000 v -2 L Ethanol'96 titer, q.s.p.-50L. U 1
Water, q.s.p. 'l00 Triethanolamine, qls.p. pH 7.
This hair-setting lotion when applied to bleached hair imparts thereto a light jade green shade.
What is claimed is:
1. A composition for dyeing human hair comprising an aqueous solution of an indamine salt, including tautomers thereof, having the formula wherein R and R each represent lower alkyl; R and R ach independently represent a member selected from the group consisting of lower alkyl, and lower alkyl substituted with a member selected from the group consisting of piperidino and acetylamino; R and R each re resent hydrogen and R represents a member selected from the group consisting of amino, acetylamino and hydroXy, n is an integer of l to 2 and X is an anion selected from the group consisting of persulfate, perchlorate, chloride, bromide and Cl Zn said compound being present in amounts of about 0.002 to 1% by weight of said composition.
2. The composition of claim 1 wherein said indamine salt is selected from the group consisting of the double chloride of zinc and N-[4-(ethyl B-piperindinoethyl) aminophenyl] 3-hydroxy benzoquinoneimine N',N'-diethyliminium,
the double chloride of zinc and N-[-4-(ethyl, B-acetylaminoethyl) amino phenyl] 3 acetylamino benzoquinoneimine N',N'-dimethyliminium,
the double chloride of zinc and N-[(4-dimethylamino) phenyl] 3-hydroxy benzoquinoneimine N,N'-diethyliminium,
the double chloride of zinc and N-[4-(ethyl, fi-acetyL aminoethyl) amino phenyl] 3-hydroxy benzoquinoneimine N,N'-diethyliminium, the chloride of N-[(4-dimethylamino) phenyl] 3- acetylamino benzoquinoneimine N',N'-dimethylimin mm,
the perchlorate of N-[(4-dimethylamino) phenyl] 3- amino benzoquinoneimine N',N'-dimethylirninium, and
the persulfate of N-[(4-dimethylamino) phenyl] 3- acetylamino benzoquinoneimine N',N'-dimethylimin- 3. The composition of claim 1 having a pH between 3-10.
4. The composition of claim 1 having a pH between 6-9.
5. The composition of claim 1 wherein the aqueous solution further includes a lower alkanol and a film forming resin selected from the group consisting of polyvinyl pyrrolidone, a copolymer of crotonic acid and vinyl acetate, a copolymer of vinylpyrrolidone and vinyl acetate and a copolymer of maleic anhydride and butyl vinyl ether, in amounts of about 13% based on the weight of said composition.
6. The composition of claim 5 wherein said lower alkanol is selected from the group consisting of ethanol and isopropanol.
7. The composition of claim 5 wherein said lower alkanol is present in amounts ranging from about 20 to 50% by weight of said composition.
8. The composition of claim 5 wherein said indamine salt is present in amounts of about 0.002 to 0.5% by weight of said composition.
9. The composition of claim 5 wherein said film forming resin is polyvinylpyrrolidone having a molecular weight ranging from about 10,00070,000.
10. The composition of claim 5 wherein said film form- 10 ing resin is a copolymer of 10% crotonic acid and vinyl acetate having a molecular weight of 45,000 to 50,000.
11. A process for dyeing human hair which comprises applying to said hair in an amount effective to dye the same an aqueous solution containing 0.002 to 1% by weight of an indamine salt having the formula wherein R and R each represent lower alkyl, R and R each independently represent a member selected from the group consisting of lower alkyl, and lower alkyl substituted with a member selected from the group consisting of piperidino and acetylamino; R and R each represent hydrogen and R represents a member selected from the group consisting of amino, acetylamino and hydroxy, n is an integer of 1 or 2 and X is an anion selected from the group consisting of persulfate, perchlorate, chloride, bromide and Cl Zn-, said composition remaining in contact with said hair for a period ranging from about 3 to 30 minutes, rinsing and drying said hair.
12. A process for dyeing and setting human hair which comprises applying to wet hair in an amount eiTective to dye and set the same an aqueous lower alkanol solution of an indamine salt, including tautomers thereof, having the formula wherein R and R each represent lower alkyl; R and R each independently represent a member selected from the group consisting of lower alkyl, and lower alkyl substituted with a member selected from the group consisting of piperidino and acetylamino; R and R each represent hydrogen and R represents a member selected from the group consisting of amino, acetylamino and hydroxy, n is an integer of 1 or 2 and X is an anion selected from the group consisting of persulfate, perchlorate, chloride, bromide and Cl Zn, said compound being present in amounts of about 0.002 to 1% by weight of said composition, said lower alkanol being present in amounts of about 20-50 percent by weight of said composition and a film forming resin selected from the group consisting of polyvinylpyrrolidone, a copolymer of crotonic acid and vinyl acetate, a copolymer of vinylpyrrolidone and vinyl acetate and a copolymer of maleic anhydride and butyl vinyl ether, in amounts of about 1-3 percent based on the weight of said composition, rolling up said hair and drying said hair.
References Cited UNITED STATES PATENTS 248,246 10/1881 Witt I 260-396 N X 249,136 11/1881 Witt 260396 N X 1,102,028 6/1914 Fischer 96100 X OTHER REFERENCES Kass et al., Journal of the Society of Cosmetic Chemists, April 1961, pp. 151-153.
ALBERT T. MEYERS, Primary Examiner V. C. CLARKE, Assistant Examiner US. Cl. X.R.
810.1, 10.2, 11; 260-396 N; 424Digest 1 and 2, 71
ATES PATENT OFFICE TE 0F CORRECTION Patent No. 3,824,075 Dated July 16, 1974 Inventor(s) Gregoire Kalopissis; Andree Bugaut & Francoise Estradier It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
In the Grant (only) In the Heading:
Delete the third line following the title and insert therefor --to Societe Anonyme dite: L'Oreal, Paris, France".
Signed and sealed this 28th day of January 1975.
(SEAL) Attest:
McCOY GIBSON JR. C. MARSHALL DANN Attesting Officer I Commissioner of Patents =oRM Po-wso no-es) v k 1 i I i I uscoM -ocooam-pw v I u Sfcovuuuuu Pululmu emu u'n 0-154