Classifications

• • 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
  • A61Q5/04—Preparations for permanent waving or straightening the hair
• • 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
  • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• • 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
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur

Definitions

• ThepH value of these solutions ranges vfrom about 8.5 to about according to the specific formula employed, and according as the ammonia is converted or notfln' addition to these products, which are essential-tor obtaining the desired effect, the solutions comprise additives adapted to improve the technical prop erties and the facility of use.
• additives are sequesjftrant s, andmiscellaneous softeners, such as animal oils, vegetable oils,lanolidderivatives, perfumes, dyes, etc.
• the hair impregnated with the product are 'kept curled'on cylindricalcurlers during the time necessary for: enabling'the product to perform its action, ,t his timebeing selected as a function of the desired defigree of curling' g 'i'riicontras't thereto, for the uncurling opj ration" the hair impregnated with'the product is drawn r tens'ioned by combing, or flattened by hand or by brush- 'g, and subs'equentlyfpress'ed on the head in this drawn ex h sds p t tr A V I More particularly, the uncurling method consists in impregnating thehair to be uncurled with solutions of which the force 'denotirfg number may be selected as a function of the specific characteristics of the hair to be States Patent (3 "ice 3,823,232 Patented July
• the smoothing step becomes gradually more detrimental to the hair as the application time proceeds, for as a consequence of the disorganization of its structure the tensile strength of the hair decreases considerably and thus the combing or smoothing operation may cause more or less important local breakages if care is not taken to avoid this operation when about one-half of the application time has elapsed.
• the reducing uncurling solution in the form of a cream having a consistency suflicient to withstand the resilient action of treated, and notably its degree of curling or waving.
• the 7 .hairissoakedwith the. solution thencombedor flattened forfismogthed out so as to press the hair andremove the ztnaturalscurling therefrom.,The hair must be maintained in this pressed condition during the applicationtime.
• emulsions which have a cream consistency and contain to this end an emulsion base of a type known per se. It is obvious that the viscosity of these emulsions may range from the milk grade to a pasty one, the technological adaptation alone determining the choice of the viscosity and therefore the proper formulation.
• These emulsions or creams contain as a rule, like most permanent wave solutions. from 3% to 8% of thioglycolic or thiolactic acid, or of an ammonium salt or of an alkali metal salt of these acids.
• an alkali metal salt of an aminoacid consists preferably of v. glycine or glycocoll (aminoacetic acid) but lysine methionine, tyrosine, glutamic acid, leucine, valine, alanine may also be used to this end.'These aminoacids may be, used in the racemic form or in the form of one of their optical isomers.
• the alkali metal salt may be a' sodium salt, a
• This aminoacid alkali metal salt carbonate may be associated with an organic base such as morpholine, monoethanolamine, triethanolamine, etc.
• the carbonate of the aminoacid alkali metal salt such as sodium glycinate, is adapted to alkalize the curling or uncurling product without having the inconveniences of ammonia; in fact it is not volatile and eliminates the release of unpleasant and suffocating odors, does not attack or modify the perfumes added to said product and is less noxious to the users skin and to the skin of the person undergoing the treatment.
• the organic base possibly associated with the aminoacid alkali metal salt carbonate is advantageous in that it makes the hair considerably more pervious to the curling or uncurling product and permits, as a function of its proportion in the product, of graduating the strength thereof, i.e. the degree and rapidity of the curling and uncurling actions obtained with the product.
• the proportion of aminoacid alkali metal salt carbonate in the product may advantageously range from about 2 to about 12% by weight, and the proportion of the possible organic base may range preferably from about 1% to about by weight.
• the aminoacid alkali metal salt carbonate may be prepared extemporaneously, or even within the curling or uncurling product itself, and in either case without any isolation. This preparation consists in putting into mutual contact, in stoichiometric proportions, alkali metal carbonate and aminoacid, for example 1 mole of sodium carbonate and 2 moles of glycocoll or glycine or aminoacetic acid. From the economical point of view it is advantageous to perform this preparation extemporaneously in aqueous phase during the process of manufacturing the curling or uncurling product.
• EXAMPLE 2 Sodium glycinate carbonate, percent r 4 3:4 Sodium or ammonium thioglycolate or thiolactate (50% aqueous solution), percent 16. 0 16.0 Sequestrant (disodium salt of EDTA), percent 0.3 Methyl p-hydroxybenzoate, percent 0 05 Proteol SN," percent Perfume, percent Morpholine, percent Opaquing agent, percent Water (complement to make 100%), p
• the opaquing agent consists of synthetic latex giving a milky appearance to the solution for purely aesthetic reasons. i
• a composition for permanently-curling, waving or uncurling hair and keratinic fibres comprising 3% to 8% by weight of thioglycolic or thiolactic acid, or of an ammonium salt or an alkali metal salt of these acids, an aqueous carrier and an alkalizing agent, wherein said alkalizing agent consists of the carbonate of anaminogacid alkali metal salt, said aminoacid ,being selected from the group consisting of glycine, lysine, methionine, tyrosine, glutamic acid,,leucine, va'lineffand alanineQand said alkali metal being selected from the -gr0upconsistir'ig of sodium, potassium and lithium, the proportion of said aminoacid alkali metal salt carbonate is within the rang'e of about 2% to about 12% by weight, based on the' weight of the composition, and the pH of the composition is in the range of about 8.3
• a composition 'assetforth'in claim'l which also contains an organic base selected from the group consisting of morpholine, monoethanolamine'add'triethanolamine, in a proportion within the range of about 1% to about 5% by weight, based on the weight of the composition.
• composition as set forthin claim 1 which additionally contains free alkali metal carbonate or free aminoacid.
• composition asset forth in claim 1 in the form of an aqueous solution
• composition as set forth in claim 1 in the form of an emulsion. .7

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Cosmetics (AREA)
• Glanulating (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26215784

Family Applications (1)

Country Status (13)

Cited By (8)

• 1971
  • 1971-02-12 CH CH207471A patent/CH523685A/fr not_active IP Right Cessation
  • 1971-02-17 BE BE763084A patent/BE763084A/xx not_active IP Right Cessation
  • 1971-02-20 NO NO620/71A patent/NO134898C/no unknown
  • 1971-03-01 US US00119921A patent/US3823232A/en not_active Expired - Lifetime
  • 1971-03-24 ES ES71389860A patent/ES389860A1/es not_active Expired
  • 1971-03-26 FI FI710874A patent/FI52809C/fi active
  • 1971-04-08 SE SE7104679A patent/SE388772B/xx unknown
  • 1971-04-09 IT IT68193/71A patent/IT1044218B/it active
  • 1971-04-19 GB GB2229471A patent/GB1314625A/en not_active Expired
  • 1971-04-19 NL NLAANVRAGE7105248,A patent/NL171324C/xx not_active IP Right Cessation
  • 1971-04-28 DK DK204571AA patent/DK129625B/da unknown
  • 1971-05-06 CA CA112,380A patent/CA959417A/en not_active Expired
  • 1971-05-10 OA OA54243A patent/OA03833A/xx unknown

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