ES440316A1 - A procedure for the preparation of an agent in dust for the care and dyeing of the hair. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of an agent in dust for the care and dyeing of the hair. (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1133274Aexternal-prioritypatent/CH603159A5/xx
Application filed by F Hoffmann La Roche AGfiledCriticalF Hoffmann La Roche AG
Publication of ES440316A1publicationCriticalpatent/ES440316A1/en
A process for the preparation of a powdering agent for the care and dyeing of hair, especially provided with a dry shampoo activity, of the type containing a dyed inorganic adsorption agent, characterized in that in its embodiment it is constituted, in a first phase of the process, a dyeing composition of water-insoluble aromatic amines in the form of their acid addition salts, in the presence of color controlling reducing agents to the desired shade, whose composition is transformed, in aqueous solution in the corresponding free bases of said amines; whose dye solution, in a second phase of the process, is treated with an absorption agent, preferably composed of silica gel of high porosity, optionally accompanied by another absorption agent, forming a suspension in which the absorption agent retains the substance dye formerly formed proceeding, at a later stage, to the oxidation of the suspension formerly formed by chemical treatment, according to known methods, with peroxide or oxygen type oxidizing reagents, finally drying the obtained substrate at temperatures lower than 70º c. (Machine-translation by Google Translate, not legally binding)
ES440316A1974-08-201975-08-19A procedure for the preparation of an agent in dust for the care and dyeing of the hair. (Machine-translation by Google Translate, not legally binding)
ExpiredES440316A1
(en)
A procedure for the preparation of an agent in dust for the care and dyeing of the hair. (Machine-translation by Google Translate, not legally binding)
FREEZE-DRIED MIXTURES OF REACTION IN ANAEROBIC MEDIUM OF POLYHYDROXYBENZENES AND PRECURSORS OF PARA-TYPE OXIDATION DYES, PARTICULARLY FOR HAIR DYEING AND PROCEDURE FOR THEIR PREPARATION.
A procedure for the preparation of an agent in dust for the care and dyeing of the hair. (Machine-translation by Google Translate, not legally binding)