Abstract: A method of coloring keratinous fibers with, and coloring compositions comprising, a sulfo-containing, water-dispersible polymer having carbonyloxy linking groups, and a colorant reacted into or onto the polymer backbone.

Abstract: Compositions for coloring keratinous fibers comprising a sulfo-containing, water-dispersible polymer having carbonyloxy linking groups, and a colorant reacted into or onto the polymer backbone.

Abstract: A method of coloring keratinous fibers with, and coloring compositions comprising, a sulfo-containing, water-dispersible polymer having carbonyloxy linking groups, and a colorant reacted into or onto the polymer backbone.

Abstract: A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under anaerobic condition and the products made by such process.

Abstract: A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under substantially anaerobic condition and the products made by such process.

Abstract: Process for dyeing human hair by the sequential treatment of the hair with a metal ion and particularly transition metal ion containing composition and with a dye composition containing 5,6-dihydroxyindole-2-carboxylic acid.

Abstract: A process and composition for dyeing hair involving the precipitation of an anionic polymeric dye by means of a cationic polymer preferably in the presence of a surfactant and particularly an amphoteric surfactant.

Abstract: A process for coloring hair in which a functional metal ion and aminoalkyl or aminohydroxyalkyl catechols are used in combination or applied sequentially to dye the hair rapidly.

Abstract: A substituted m-aminophenol coupler useful in hair dyeing having the formula ##STR1## and acid addition salts thereof wherein x and y are selected from the group consisting of halogen and the groups OR of which R is the same or different alkyl, aminoalkyl or hydroxyalkyl groups, at least one of x or y being a group OR and a process for preparing these compounds.

Abstract: 2-Equivalent oxidative hair dye coupler compounds of the formula (I) ##STR1## wherein X is halogen or OR', wherein R and R' may be the same or different and represent alkyl, mono- or poly-hydroxyalkyl, alkoxyalkyl, alkylphenyl, aminoalkyl, mono- and di-alkylaminoalkyl, phenyl or phenylalkyl except that R and R' are not both methyl, and the acid addition salts thereof are used in oxidative hair dye compositions with conventional para bases. The amount of oxidizing agent can be reduced relative to similar compositions containing 4-equivalent meta coupler compounds. Some of the compounds of formula (I) in which X is OR' are novel compounds as is the elimination of HOR' during the oxidative coupling reaction.

Abstract: Compounds of formula: ##STR1## and oxidation hair dye compositions containing the same; also includes a process for dyeing hair with such compositions; Ar being an aryl radical.