1. A compound of formula (I):
and addition salts thereof, wherein:
each R is independently chosen from linear and branched C1-C4 alkyl radicals; and linear and branched C1-C4 alkoxy radicals;
m is an integer ranging from 0 to 4;
R1 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals;
R2 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals; and
n is an integer ranging from 2 to 6.
2. A compound chosen from the following compounds and addition salts thereof:
N-Methyl-N-(2-methylaminoethyl)benzene-1,4-diamine
2-{2-(4-Aminophenyl)methylaminoethylamino}ethanol
N-2-(2-Methoxyethylamino)ethyl-N-methylbenzene-1,4- diamine
N-(2-Aminoethyl)-N-ethylbenzene-1,4-diamine
2-(4-Aminophenyl)(2-methylaminoethyl)aminoethanol
N-Methyl-N-(3-methylaminopropyl)benzene-1,4-diamine
N-Methyl-N-(4-methylaminobutyl)benzene-1,4-diamine
2-{(4-Aminophenyl)2-(2-hydroxy- ethylamino)ethylamino}ethanol
N-Methyl-N-(6-methylaminohexyl)benzene-1,4-diamine
N-sec-Butyl-N-(6-sec-butylaminohexyl)benzene-1,4- diamine
N-Propyl-N-(6-propylaminohexyl)benzene-1,4-diamine
N-Butyl-N-(6-butylaminohexyl)benzene-1,4-diamine
N-Ethyl-N-(6-ethylaminohexyl)benzene-1,4-diamine
N-Isobutyl-N-(6-isobutylaminohexyl)benzene-1,4-diamine
2,N\u20324\u2032-Dimethyl-N4-(2-methylaminoethyl)benzene-1,4- diamine
2-{2-(4-Amino-3-methylphenyl)- methylaminoethylamino}ethanol
N-4-2-(2-Methoxyethylamino)ethyl-2,N-4- dimethylbenzene-1,4-diamine
N-4-(2-Aminoethyl)-N-4-ethyl-2-methylbenzene-1,4- diamine
2-(4-Amino-3-methylphenyl)(2- methylaminoethyl)aminoethanol
2,N-4-Dimethyl-N-4-(3-methylaminopropyl)benzene-1,4- diamine
2,N-4-Dimethyl-N-4-(4-methylaminobutyl)benzene-1,4- diamine
2-{(4-Amino-3-methylphenyl)2-(2- hydroxyethylamino)ethylamino}ethanol
2,N-4-Dimethyl-N-4-(6-methylaminohexyl)benzene-1,4- diamine
N-4-sec-Butyl-N-4-(6-sec-butylaminohexyl)-2- methylbenzene-1,4-diamine
2-Methyl-N-4-propyl-N-4-(6-propylaminohexyl)benzene- 1,4-diamine
N-4-Butyl-N-4-(6-butylaminohexyl)-2-methylbenzene-1,4- diamine
N-4-Ethyl-N-4-(6-ethylaminohexyl)-2-methylbenzene-1,4- diamine
N-4-Isobutyl-N-4-(6-isobutylaminohexyl)-2- methylbenzene-1,4-diamine
3. A dye composition comprising, in a medium suitable for dyeing keratin fibers, at least one compound chosen from compounds of formula (I):
and addition salts thereof, wherein:
each R is independently chosen from linear and branched C1-C4 alkyl radicals; and
linear and branched C1-C4 alkoxy radicals;
m is an integer ranging from 0 to 4;
R1 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals;
R2 is chosen from a linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals; and
n is an integer ranging from 2 to 6.
4. The dye composition of claim 3, wherein the keratin fibers are human keratin fibers.
5. A dye composition comprising, in a medium suitable for dyeing keratin fibers, at least one compound chosen from the following compounds and addition salts thereof:
N-Methyl-N-(2-methylaminoethyl)benzene-1,4-diamine
2-{2-(4-Aminophenyl)methylaminoethylamino}ethanol
N-2-(2-Methoxyethylamino)ethyl-N-methylbenzene-1,4- diamine
N-(2-Aminoethyl)-N-ethylbenzene-1,4-diamine
2-(4-Aminophenyl)(2-methylaminoethyl)aminoethanol
N-Methyl-N-(3-methylaminopropyl)benzene-1,4-diamine
N-Methyl-N-(4-methylaminobutyl)benzene-1,4-diamine
2-{(4-Aminophenyl)2-(2-hydroxy- ethylamino)ethylamino}ethanol
N-Methyl-N-(6-methylaminohexyl)benzene-1,4-diamine
N-sec-Butyl-N-(6-sec-butylaminohexyl)benzene-1,4- diamine
N-Propyl-N-(6-propylaminohexyl)benzene-1,4-diamine
N-Butyl-N-(6-butylaminohexyl)benzene-1,4-diamine
N-Ethyl-N-(6-ethylaminohexyl)benzene-1,4-diamine
N-Isobutyl-N-(6-isobutylaminohexyl)benzene-1,4-diamine
2,N\u20324\u2032-Dimethyl-N4-(2-methylaminoethyl)benzene-1,4- diamine
2-{2-(4-Amino-3-methylphenyl)- methylaminoethylamino}ethanol
N-4-2-(2-Methoxyethylamino)ethyl-2,N-4- dimethylbenzene-1,4-diamine
N-4-(2-Aminoethyl)-N-4-ethyl-2-methylbenzene-1,4- diamine
2-(4-Amino-3-methylphenyl)(2- methylaminoethyl)aminoethanol
2,N-4-Dimethyl-N-4-(3-methylaminopropyl)benzene-1,4- diamine
2,N-4-Dimethyl-N-4-(4-methylaminobutyl)benzene-1,4- diamine
2-{(4-Amino-3-methylphenyl)2-(2- hydroxyethylamino)ethylamino}ethanol
2,N-4-Dimethyl-N-4-(6-methylaminohexyl)benzene-1,4- diamine
N-4-sec-Butyl-N-4-(6-sec-butylaminohexyl)-2- methylbenzene-1,4-diamine
2-Methyl-N-4-propyl-N-4-(6-propylaminohexyl)benzene- 1,4-diamine
N-4-Butyl-N-4-(6-butylaminohexyl)-2-methylbenzene-1,4- diamine
N-4-Ethyl-N-4-(6-ethylaminohexyl)-2-methylbenzene-1,4- diamine
N-4-Isobutyl-N-4-(6-isobutylaminohexyl)-2- methylbenzene-1,4-diamine
6. The dye composition of claim 5, wherein the keratin fibers are human keratin fibers.
7. The dye composition according to claim 3, wherein the compound of formula (I) is present in an amount ranging from 0.001% to 10% by weight relative to the total weight of the dye composition.
8. The dye composition according to claim 7, wherein the compound of formula (I) is present in an amount ranging from 0.005% to 6% by weight relative to the total weight of the dye composition.
9. The dye composition according to claim 3, further comprising at least one additional oxidation base optionally combined with at least one coupler.
10. The dye composition according to claim 9, wherein the additional oxidation base is chosen from para-phenylenediamines other than the compounds of formula (I), bis(phenyl)alkylenediamines, para-aminophenols, bis-para-aminophenols, ortho-aminophenols and heterocyclic bases, and addition salts thereof.
11. The dye composition according to claim 9, wherein the additional oxidation base is present in an amount ranging from 0.001% to 10% by weight relative to the total weight of the dye composition.
12. The composition according to claim 9, wherein the at least one coupler is chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based couplers, and heterocyclic couplers, and addition salts thereof.
13. The composition according claim 9, wherein the at least one coupler is present in an amount ranging from 0.001% to 10% by weight relative to the total weight of the dye composition.
14. The composition according to claim 3, further comprising at least one direct dye chosen from neutral, anionic and cationic direct dyes.
15. The composition according to claim 14, wherein the at least one direct dye is chosen from nitrobenzene dyes, azo dyes, azomethine dyes, azine dyes, methine dyes, tetraazapentamethine dyes, quinone dyes, anthraquinone dyes, naphthoquinone dyes, benzoquinone dyes, phenothiazine dyes, indigoid dyes, indoamine dyes, xanthene dyes, phenanthridine dyes, phthalocyanin dyes, triarylmethane-based dyes, natural dyes, and mixtures thereof.
16. The composition according to claim 14, wherein the at least one direct dye is present in an amount ranging from 0.001% to 20% by weight relative to the total weight of the dye composition.
17. The composition according to claim 16, wherein the at least one direct dye is present in an amount ranging from 0.01% to 10% by weight relative to the total weight of the dye composition.
18. The composition according to claim 3, further comprising at least one oxidizing agent.
19. The composition according to claim 18, wherein the at least one oxidizing agent is chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts, peracids, and enzymes.
20. The composition according to claim 19, wherein the persalts are chosen from perborates and persulfates and the enzymes are chosen from peroxidases and 2- or 4-electron oxidoreductases.
21. The composition according to claim 19, wherein the at least one oxidizing agent is hydrogen peroxide.
22. A process for oxidation dyeing of keratin fibers, comprising applying a dye composition to the keratin fibers, which may be wet or dry, for a time sufficient to obtain a desired coloration,
wherein the dye composition comprises, in a medium suitable for dyeing keratin fibers, at least one compound chosen from compounds of formula (I):
and addition salts thereof, wherein:
each R is independently chosen from linear and branched C1-C4 alkyl radicals; and linear and branched C1-C4 alkoxy radicals;
m is an integer ranging from 0 to 4;
R1 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals;
R2 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals; and
n is an integer ranging from 2 to 6.
23. The process of claim 22, wherein the keratin fibers are human keratin fibers.
24. The process according to claim 22, wherein at least one oxidizing agent is applied to the fibers in the form of at least one oxidizing composition simultaneously with or sequentially to the dye compositions.
25. A multi-compartment device comprising a first compartment comprising a dye composition and a second compartment comprising an oxidizing agent,
wherein the dye composition comprises, in a medium suitable for dyeing keratin fibers, at least one compound chosen from compounds of formula (I):
and addition salts thereof, wherein:
each R is independently chosen from linear and branched C1-C4 alkyl radicals; and linear and branched C1-C4 alkoxy radicals;
m is an integer ranging from 0 to 4;
a R1 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals;
R2 is chosen from linear and branched C1-C4 alkyl radicals; linear and branched C2-C4 hydroxyalkyl radicals; and linear and branched (C1-C4)alkoxy(C2-C4)alkyl radicals; and
n is an integer ranging from 2 to 6.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bearing structure comprising an outer ring, an inner ring, a middle base and a plurality of roller sets, the middle base sandwiched in between the outer ring and the inner ring, the middle base assembled at a center of the outer ring, the middle base having an assembling hole opened at a center thereof, the inner ring assembled in the assembling hole, a rotation of the inner ring driving the middle base to rotate, the rotation of the middle base driving the outer ring to rotate, the middle base having a plurality of positioning openings opened on a wall of the assembling hole therethrough, each positioning opening having two grooves respectively defined at two opposite walls thereof, each roller set assembled in each corresponding positioning opening, two ends of each roller set respectively inserted into the two grooves of each corresponding positioning opening, an elastomer assembled in each positioning opening, the elastomer located between the two grooves, two ends of the elastomer respectively abutting against another wall of each positioning opening and one end of each corresponding roller set.
2. The bearing structure as claimed in claim 1, wherein each positioning opening has a positioning hole opened at another wall thereof; one end of the elastomer abuts against a bottom of the positioning hole of each positioning opening.
3. The bearing structure as claimed in claim 2, wherein each roller set has a roller member and a frame; the frame has two pivot arms defined at one end thereof; the two pivot arms are spaced from each other, so that the frame is U-shaped; each pivot arm is assembled at each corresponding groove; the roller member is assembled between the two pivot arms; the roller member is rotatable between two ends of the two pivot arms; the frame has a rod defined at another end thereof;
another end of the elastomer is mounted around the rod and abuts against the frame of each corresponding roller set.
4. The bearing structure as claimed in claim 3, wherein a shape of the assembling hole is the same as a shape of the inner ring; the assembling hole and the inner ring are both polygonal.