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
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/41—Amines
  • A61K8/415—Aminophenols
• • 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
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/32—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using oxidation dyes

Definitions

• R is selected from the group consisting of hydrogen and alkyl
• R is selected from the group consisting of hydroxy and alkyl
• R, which can be in position or 6 on the ring is selected from the group consisting of hydrogen, halogen, hydroxy and alkyl.
• This invention relates to improvements in processes for the dyeing of hair and to new compositions suitable for one step keratin fiber and hair dyeing.
• a number of processes for dyeing keratinic fibers and notably hair are at present known, among the most commonly employed of these processes are those which are oxidation dyes whose coloration results from polymerization under oxidizing conditions.
• the oxidation dyes employed are almost exclusively mixtures of aromatic diamines and aromatic aminophenols, generally known as bases, in combination with substances, generally called modifiers, such as substituted or unsubstituted monoand polyphenols. It is thus possible, by using a relatively limited number of aromatic bases and phenols, to obtain a fairly wide range of colorations, the proportions of the various constituents which enter into the composition of the dye bath being emperically varied.
• the formation of haircoloring pigments from these mixtures results from a series of very complex chemical reactions which necessitate either the use of an oxidizing substance, hydrogen peroxide, or the presence of a substance having an alkaline reaction, which is generally ammonia. It is also known that by increasing the hydrogen peroxide and ammonia content there is obtained what is known as a decolorizing dye, there being simultaneously produced a decoloration of the hair to be dyed and a hair coloration in the desired shade.
• each of the selected bases employed develops its own shade. Consequently, an extensive range of commercially necessary shades may be made available merely by employing a number of these products, the final shade obtained being the component of the individual shades of the starting materials.
• the dyeing solution comprises no oxidizing agent and no modifier and its pH value is equal to or higher than 7, viz from 7 to 11, the necessary oxidation being induced by atmospheric oxygen.
• EXAMPLE 8 Preparation of 6-methy1-4-hydroxy-2-aminophenol 6-methyl-4-methoxy-2-aminophenol is refluxed with a concentrated hydrobromic acid solution. After cooling, the hydrobromide of 6-methyl-4-hydroxy-2-aminophenol is filtered and separated. M.P. 225-228 C. (dec.).
• a dyeing solution according to the invention is prepared by mixing:
• a human hair dye composition comprising water and an effective amount of 6-brom0-4-methoxy-2-aminophenol having a pH of about 7 to 11.
• a human hair dye composition comprising water and an efiective amount of 4-methyl-5-hydroxy-2-aminophenol having a pH of about 7 to 11.
• a human hair dye composition comprising water and an effective amount of 4-methyl-S-hydroxy-2-methylaminophenol having a pH of about 7 to 11.
• a human hair dye composition comprising water and an effective amount of 5-chloro-4-hydroxy-2-aminophenol having a pH of about 7 to 11.
• a human hair dye composition comprising water and an effective amount of 5-methyl-4-hydroxy-2-aminophenol having a pH of about 7 to 11.
• a human hair dye composition comprising water and an effective amount of 5-methoxy-4-hydroxy-2-aminophenol having a pH of about 7 to 11.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Cosmetics (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=27246678

Family Applications (4)

Family Applications After (3)

Country Status (6)

Cited By (6)

Families Citing this family (16)

Family Cites Families (5)

• 0
  • BE BE634643D patent/BE634643A/xx unknown
  • NL NL295194D patent/NL295194A/xx unknown
• 1963
  • 1963-07-10 DE DE19631492064 patent/DE1492064A1/de not_active Ceased
  • 1963-07-11 CH CH865463A patent/CH415965A/fr unknown
  • 1963-07-11 GB GB27554/63A patent/GB987342A/en not_active Expired
• 1967
  • 1967-06-12 US US645520A patent/US3558259A/en not_active Expired - Lifetime
  • 1967-06-12 US US645522A patent/US3546293A/en not_active Expired - Lifetime
  • 1967-06-12 US US645519A patent/US3666812A/en not_active Expired - Lifetime
• 1970
  • 1970-08-31 US US00068488A patent/US3738799A/en not_active Expired - Lifetime

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