Abstract: The invention provides a composition and process for directly dyeing keratinic fibres. The combination of 1-N-methylamino-2-nitro-4-N'-methyl-N'-(2' ,3'-dihydroxypropyl)amino benzene with certain 2-nitroparaphenylenediamine direct nitro dyes produces a dye composition in which the dyes can be more concentrated (without crystallizing out) and hence produce darker shades.
Type:
Grant
Filed:
November 21, 1984
Date of Patent:
July 22, 1986
Assignee:
L'Oreal
Inventors:
Jean-Francois Grollier, Jean Cotteret, Andree Bugaut, Alain Genet
Abstract: Dyeing compositions are disclosed which comprise at least one oxidation dyestuff precursor in combination with at least one direct dyestuff, in an aqueous vehicle, the direct dyestuff being a nitro derivative of the benzene series having the formula: ##STR1## in which R.sub.1 denotes the methyl group, R.sub.2 and R.sub.4 denote hydrogen and R.sub.3 denotes the .beta.-hydroxyethoxy group, or alternatively R.sub.1, R.sub.3 and R.sub.4 denote hydrogen and R.sub.2 denotes the methyl or hydroxyl group, or alternatively R.sub.1 and R.sub.2 denote hydrogen, R.sub.3 denotes the methyl group and R.sub.4 denotes the hydroxyl, (.beta.-hydroxyethyl)-amino or (.beta.-N,N-diethylaminoethyl)-amino group, or R.sub.1, R.sub.2 and R.sub.3 denote hydrogen and R.sub.4 denotes the N,N-bis-(.beta.-hydroxyethyl)-amino group.
Type:
Grant
Filed:
October 14, 1981
Date of Patent:
April 16, 1985
Assignee:
L'Oreal
Inventors:
Christian Monnais, Jean Cotteret, Andree Bugaut
Abstract: A quaternized polymer for use as a cosmetic agent, has recurring units of the formula ##STR1## wherein R is lower alkyl or -CH.sub.2 -CH.sub.2 OH;R' is an aliphatic, alicyclic or arylaliphatic radical containing a maximum of 20 carbon atoms, or R and R' together with the nitrogen atom to which they are attached form a heterocycle capable of containing a heteroatom other than nitrogen;A is a divalent group selected from(1) o-, m- or p-xylylidene of the formula ##STR2## wherein x, y and t are whole numbers ranging from 0 to 11 such that the sum (x+y+t) is greater than or equal to 0 and lower than 18, and E and K represent hydrogen or an aliphatic radical having less than 18 carbon atoms,(3) --(CH.sub.2).sub.n --S--(CH.sub.2).sub.n --,(4) --(CH.sub.2).sub.n --O--(CH.sub.2).sub.n --,(5) --(CH.sub.2).sub.n --S--S--(CH.sub.2 (.sub.n --,(6) --(CH.sub.2).sub.n --SO--(CH.sub.2).sub.n --,(7) --(CH.sub.2).sub.n --SO.sub.2 --(CH.sub.2).sub.
Abstract: The invention provides new chlorine-substituted nitro-para-phenylenediamines of the formula: ##STR1## in which R.sub.1 and R.sub.2, which are identical or different, denote hydrogen, a lower alkyl group or a monohydroxylated or polyhydroxylated alkyl group and n is an integer from 2 to 4, and the cosmetically acceptable salts of these compounds. These compounds can be used for hair dyeing.
Abstract: Cyclical polyethers having amphiphile groups are derived from the tetramer of epichlorhydrin. These are useful in the solubilization of various products.