Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/347—Phenols
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/10—Preparations for permanently dyeing the hair
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/02—Material containing basic nitrogen
  • D06P3/04—Material containing basic nitrogen containing amide groups
  • D06P3/30—Material containing basic nitrogen containing amide groups furs feathers, dead hair, furskins, pelts
  • D06P3/305—Material containing basic nitrogen containing amide groups furs feathers, dead hair, furskins, pelts with oxidation dyes

Definitions

• This invention relates to the dyeing of hair, including human hair, and other keratinous materials.
• 2,4,5-trihydroxytoluene is capable of dyeing, wool in shades from light reddish-brown to dark brown, depending upon whether the solution is adjusted to an acid or an alkaline pH-value, by operating at 90 "C. for l hour.
• a process for dyeing hair is also known, in which use is made of the 1,2,4-trihydroxy compounds of benzene (which may also contain other s'ubstituents) in the form of their corresponding'1,2,4- triacyl derivatives; such derivatives are saponified a few moments before their application by boiling them in aqueous alcoholic solution in the presence of an excess of an alkaline reactant, such as sodium carbonate.
• thesesaponified derivatives are applied in alkaline medium; whatever the method of oxidation employed (simsirable because of the subsequent chemical treatments.
• a process for dyeing hair and other keratinous material comprises subjectingthe same to the simultaneous action of at least one triphenol of the following general formula:
• Rj represents a hydrogen orhalo gen atom'or an ing and drying the hair or other material.
• the global triphenol concentration of the solution applied to the hair ,or other keratinous material may vary within fairly widelirnits but is preferably between 0.01
• the pH-value of the solutions may vary between 1 V lathe-case where the solution employed contains one of thev aforesaid oxidising agents, account should be taken, in selecting the working pH, of the nature of this oxidising agent.
• an alkali metal or ammo-i 5 nium iodate onperiodate. is employed asthe oxidising reactant, it is preferable not to reduce the pH below 3 alcoholic solutions of 1,2,4-trihydroxybenzene or of'2,4,5-
• trihydroxytoluene which may advantageously be adjusted to an acid pH for application to the hair, the shade being thereafter developed on ⁇ the hair itself by the addition of analiphatic'o'r araliphatic primary amineor again, if-
• u aqueous or aqueous ⁇ alcoholic solution of thetriphenol or of the mixture of triphenols is' prepared, to which theiinorganicoxidiz-Q ,iug agent or agents is or are added at the time of apple The cation to. the hair or other keratinous product.
• pH of the solution may beadjus te'dto the desired value
• the use'of metallic salts does .in I V and the oxidizing agent
• the pH theriresulting simply by the addition of any appropriate reactant. If preferred it is Iev'en'possible to usejthe solution as such that is to 1 1T sa'y,withoutanyothercOnstituent than the'triphenols p 2915.101 9, w e
• the solution is preferably left in contact with the hair or other keratinous material for 5-60 minutes and the gair is then briefly rinsed, shampooed, rinsed again and ried.
• the inorganic oxidizing agent or agents may be introduced into the triphenol solution either in the form of powder or in aqueous solution.
• the process is carried out in two stages, by first applying the solution of the triphenol or triphenols, free from any oxidizing agent, and allowing this solution to remain in contact with the hair or with the product to be dyed for 5-60 minutes in order to complete the impregnation, partly drying the hair, if desired after rinsing with water, and then applying an aqueous solution of the selected oxidizing agent and leaving it in contact for the period necessary for the development of the shade, generally from 5-20 minutes, the hair then being rinsed, shampooed, rinsed again and dried.
• the pH of the triphenol solution applied in the first stage is not adapted to the nature of the oxidizing agent employed or to the desired effect, or if the brief rinsing which has followed this first application has caused the pH on the hair to revert to a higher excessive value, said value may be modified by adding to the solution containing the oxidizing agent an appropriate reactant, for example an organic or inorganic acid, an acid hydrogen salt or a buffer.
• an appropriate reactant for example an organic or inorganic acid, an acid hydrogen salt or a buffer.
• the oxidising agent employed is an iodate or periodate it is preferable not to reduce the pH value below 3 and to avoid the use of strong inorganic acids for obtaining low pH values.
• the concentration of the oxidizing agent in the solution containing it may be comprised between fairly wide limits, depending upon the desired shade and upon the own solubility of the oxidizing agents which may be employed.
• the quantity of oxidizing agent to be employed corresponds to about 0.5 to g. per 100 cc. of the triphenol solution employed, whether or not this solution itself contains the oxidizing agent.
• the volumes of triphenol solution and/ or of oxidizing agent to be employed are based in each case on the bulk of hair to be treated or on the quantity of other keratinous material to be dyed.
• the dyeing process of the invention may be carried out not only by means of aqueous solutions as described above, but also by means of creams, pastes or jellies, the adjustment to the required consistency being effected by any conventional method used in hair dyeing.
• Example I A solution having the following composition is prepared:
• the pH of this solution is 4.
• 2 g. of potassium periodate are added thereto.
• the solution is left'in contact with the hair for 20 minutes, and the hair is then rinsed, shampooed, rinsed again and dried.
• the shade obtained is light chestnut and has a very natural appearance.
• Example III The following composition is employed:
• Example VI A solution having the following composition is prepared:
• the invention is of especial importance in relation to the dyeing of human hair it may also be applied, for example, to keratinous materials in the form of fibers, felts, furs and feathers.
• a process for dyeing live human hair at room temperature which comprises applying thereto, a freshly prepared aqueous solution containing a triphenol of the general formula HO OH wherein R is selected from the group consisting of by drogen, halogen, alkyl, alkoxy and hydroxyalkyl, said solution being adjusted to a pH value of at most 7 and containing an oxidizing agent selected from the group consisting of alkali metal and ammonium iodates, periodates and persulphates.
• a process for dyeing live human hair at room temperature which comprises applying thereto, a freshly prepared aqueous solution containing a triphenol of the general formula HO OH 3.
• a process for dyeing live human hair at room temperature which comprises applying thereto, a freshly prepared aqueous solution containing -a triphenol of the gen: eral formula HO OH HO R wherein R is selected from the group consisting of hydrogen, halogen, alkyl, alkoxy and hydroxyalkyl, said solution being adjusted to a pH value of at least 3 and at most 7 and containing an oxidizing agent selected from the group consisting of alkali metal and ammonium iodates, periodates and presulphates, said solution containing 0.01 mole to 1 mole of said triphenol per litre and 0.5 to 10 grams of said oxidizing agent per cc.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Epidemiology (AREA)
• Birds (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Cosmetics (AREA)
• Coloring (AREA)

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Publications (1)

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Cited By (5)

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Citations (4)

Family Cites Families (3)

• 0
  • NL NL224268D patent/NL224268A/xx unknown
  • BE BE564088D patent/BE564088A/xx unknown
• 1958
  • 1958-01-17 GB GB1753/58A patent/GB827439A/en not_active Expired
  • 1958-01-17 US US709479A patent/US2975101A/en not_active Expired - Lifetime
  • 1958-01-20 DE DES56643A patent/DE1126565B/de active Pending
  • 1958-01-21 CH CH348511D patent/CH348511A/fr unknown

Patent Citations (4)

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