WO1995005412B1 - Cosmetic melanins - Google Patents

Cosmetic melanins

Info

Publication number
WO1995005412B1
WO1995005412B1 PCT/US1994/009153 US9409153W WO9505412B1 WO 1995005412 B1 WO1995005412 B1 WO 1995005412B1 US 9409153 W US9409153 W US 9409153W WO 9505412 B1 WO9505412 B1 WO 9505412B1
Authority
WO
WIPO (PCT)
Prior art keywords
melanin
acid
monomeric units
polymer according
melanin polymer
Prior art date
Application number
PCT/US1994/009153
Other languages
French (fr)
Other versions
WO1995005412A1 (en
Filing date
Publication date
Priority to AT94925861T priority Critical patent/ATE197163T1/en
Priority to DE69426204T priority patent/DE69426204T2/en
Priority to CA002169831A priority patent/CA2169831C/en
Priority to DK94925861T priority patent/DK0714418T3/en
Priority to KR1019960700848A priority patent/KR960703564A/en
Priority to AU75640/94A priority patent/AU702191B2/en
Application filed filed Critical
Priority to BR9407304A priority patent/BR9407304A/en
Priority to JP7507094A priority patent/JPH09501961A/en
Priority to EP94925861A priority patent/EP0714418B1/en
Publication of WO1995005412A1 publication Critical patent/WO1995005412A1/en
Publication of WO1995005412B1 publication Critical patent/WO1995005412B1/en
Priority to GR20000402855T priority patent/GR3035168T3/en

Links

Abstract

Synthetic melanins suitable for cosmetic uses are produced through oxidative polymerization of monomeric precursors that possess aromatic rings with ionizeable side groups. Agents that enhance adherence of the melanins to skin and hair are co-polymerized with the precursors to become part of the melanin molecules. Potential new precursors and adherence-enhancing agents are screened for efficacy by subjecting them to six separate synthetic procedures, and testing the resulting melanins for color, ultraviolet absorbance charcteristics, and substantivity (adherence) to skin and hair. Melanins of different colors can be blended together in cosmetic creams and lotions to complement the natural skin, eye, and hair colors of an individual. The synthetic procedures are amendable to industrial-scale production of cosmetic melanins. The materials reduce the incidence of solar damage to the skin.

Claims

AMENDED CLAIMS[received by the International Bureau on 16 February 1995 (16.02.95); original claims 1 and 2 amended; original claims 29-34 replaced by amended claims 29-32 (4 pages)]
1. A melanin polymer comprising monomeric units selected from the group consisting of 3- am.'.notyrosine, dihydroxyindole-2-carboxylic acid, 3,4- dihydroxybenzoic acid, 3-amino, 4-hydroxybenzoic acid, aloin, dihydroxyphenylalanine, 4,5-dihydroxynaphthalene-2- sulfonic acid, 3-nitrotyrosine and p-aminobenzoic acid, said melanin polymer characterized by being substantive to human skin and hair and being soluble in aqueous cosmetic buffers at physiological pH and temperature.
2. A melanin polymer according to claim 1, further comprising a comonomer which is an agent that enhances substantivity of the melanin polymer to human skin.
3. A melanin polymer according to claim 2, wherein the comonomer comprises an aromatic glycoside.
4. A melanin polymer according to claim 2, wherein the comonomer comprises aloin.
5. A melanin polymer according to claim 2, wherein the comonomer comprises emodin.
6. A melanin according to claim 2, wherein the comonomer comprises a steroid.
7. A melanin according to claim 2, wherein the comonomer comprises cholesterol.
8. A melanin polymer according to claim 2, wherein the comonomer comprises a carbazole alkaloid.
-27-
9. A melanin polymer according to claim 2, wherein the comonomer comprises dihydroxycarbazole.
10. A melanin polymer according to claim 2, wherein the comonomer comprises a fatty acid.
11. A melanin polymer according to claim 2, wherein the comonomer comprises 9,10-dihydroxystearic acid.
12. A melanin polymer according to claim 2, wherein the comonomer comprises linoleic acid.
13. A melanin polymer according to claim 2, wherein the comonomer comprises linolenic acid.
14. A melanin polymer according to claim 1, comprising monomeric units of an aromatic compound carrying an ionizable side group.
15. A melanin according to claim 1, comprising monomeric units of tyrosine.
16. A melanin according to claim 1, comprising monomeric units of dihydroxyphenylalanine.
17. A melanin according to claim 1, comprising monomeric units of 3-amino-tyrosine.
18. A melanin according to claim 1, comprising monomeric units of 3-nitro-tyrosine.
19. A melanin according to claim 1, comprising monomeric units of dihydroxybenzoic acid.
20. A melanin according to claim 1, comprising monomeric units of 3-amino-4-hydroxybenzoic acid.
21. A melanin according to claim 1, comprising monomeric units of 3-dimethylamino phenol.
22. A melanin according to claim 1, comprising monomeric units of p-aminobenzoic acid.
23. A melanin according to claim 1, comprising monomeric units of an indole.
24. A melanin according to claim 1, comprising monomeric units of dihydroxyindole.
25. A melanin according to claim 1, comprising monomeric units of 5,6-dihydroxyindole-2-carboxylic acid.
26. A melanin according to claim 1, comprising monomeric units of dihydroxynaphthalenesulfonic acid.
27. A melanin polymer according to claim 1, consisting essentially of aloin.
28. A melanin polymer according to claim 1, consisting essentially of emodin.
29. A method of obtaining a melanin polymer according to claim 1, which comprises polymerizing a monomeric material selected from the group consisting of aloin, dihydroxyphthalenesulfonic acid, p-aminobenzoic acid, emodin, dihydroxybenzoic acid, aminohydroxybenzoic acid, tyrosine, dihydroxyphenylalanine, dihydroxyindole-2- carboxylic acid, 3-aminotyrosine, 3-dimethylamino phenol and 3-nitrotyrosine in aqueous solution by oxidation in the presence of air:
-29- (a) in the presence of a weak base; or
(b) in the presence of a weak base and a salt of Cu++ or Fe++; or
(c) in the presence of a weak base, a salt of Cu++ or Fe++ and an oxidant; or
(d) in the presence of a strong base; or
(e) in the presence of a strong base and a salt of Cu++ or Fe++; or
(f) in the presence of a strong base, a salt of Cu++ or Fe++ and an oxidant; and thereafter adding to the resulting solution of formed melanin polymer a lower alkanol, thereby to precipitate from said solution the melanin polymer.
30. The method according to claim 29, wherein the lower alkanol comprises ethanol.
31. A composition comprising a melanin polymer according to claim 1 and urea.
32. A liposome containing a melanin polymer according to claim 1.
-30-
PCT/US1994/009153 1993-08-19 1994-08-11 Cosmetic melanins WO1995005412A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE69426204T DE69426204T2 (en) 1993-08-19 1994-08-11 COSMETIC MELANINE
CA002169831A CA2169831C (en) 1993-08-19 1994-08-11 Cosmetic melanins
DK94925861T DK0714418T3 (en) 1993-08-19 1994-08-11 Cosmetic melanins
KR1019960700848A KR960703564A (en) 1993-08-19 1994-08-11 COSMETIC MELANINS
AU75640/94A AU702191B2 (en) 1993-08-19 1994-08-11 Cosmetic melanins
AT94925861T ATE197163T1 (en) 1993-08-19 1994-08-11 COSMETIC MELANIN
BR9407304A BR9407304A (en) 1993-08-19 1994-08-11 Melanin polymer, melanin, screening procedure to test potential precursor and optionally an improving agent for the production of a new malanine polymer, composition, liposome, and process for obtaining a melanin polymer
JP7507094A JPH09501961A (en) 1993-08-19 1994-08-11 Melanin for cosmetics
EP94925861A EP0714418B1 (en) 1993-08-19 1994-08-11 Cosmetic melanins
GR20000402855T GR3035168T3 (en) 1993-08-19 2000-12-29 Cosmetic melanins

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10928693A 1993-08-19 1993-08-19
US109,286 1993-08-19

Publications (2)

Publication Number Publication Date
WO1995005412A1 WO1995005412A1 (en) 1995-02-23
WO1995005412B1 true WO1995005412B1 (en) 1995-03-16

Family

ID=22326854

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/009153 WO1995005412A1 (en) 1993-08-19 1994-08-11 Cosmetic melanins

Country Status (15)

Country Link
EP (1) EP0714418B1 (en)
JP (1) JPH09501961A (en)
KR (1) KR960703564A (en)
AT (1) ATE197163T1 (en)
AU (1) AU702191B2 (en)
BR (1) BR9407304A (en)
CA (1) CA2169831C (en)
DE (1) DE69426204T2 (en)
DK (1) DK0714418T3 (en)
ES (1) ES2153428T3 (en)
GR (1) GR3035168T3 (en)
IL (1) IL110674A0 (en)
PT (1) PT714418E (en)
WO (1) WO1995005412A1 (en)
ZA (1) ZA946327B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5744125A (en) * 1993-08-19 1998-04-28 Yale University Cosmetic melanins
US5766214A (en) * 1996-04-18 1998-06-16 Mehl, Sr.; Thomas L. Melanin enhanced photothermolysis hair removal
US7201815B2 (en) 2003-09-02 2007-04-10 H.B. Fuller Licensing & Financing Inc. Paper laminates manufactured using foamed adhesive systems
JP5403568B2 (en) * 2005-07-15 2014-01-29 Mgcフィルシート株式会社 Method for producing melanin and melanin produced by the method
FR2951373B1 (en) * 2009-10-16 2012-04-13 Oreal COMPOSITION COMPRISING AT LEAST ONE 1,8-DIHYROXY-NAPHTHALENE DERIVATIVE AND AT LEAST ONE ALKALINIZING AGENT DIFFERENT FROM AMMONIA, PROCESS FOR COLORING KERATIN FIBERS FROM THE COMPOSITION
CA2943604A1 (en) * 2014-03-25 2015-10-01 Northwestern University Dopa-melanin formation in high ionic strength solutions
CN116115512B (en) * 2023-04-17 2023-08-04 知想(南京)生物科技有限公司 Oligomeric melanin inclusion, and preparation method and application thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515773A (en) * 1983-07-05 1985-05-07 Repligen Corporation Skin tanning composition and method
LU85320A1 (en) * 1984-04-17 1985-11-27 Oreal COSMETIC COMPOSITION CONTAINING ALOESIN AS A PROTECTIVE AGENT AGAINST SUNLIGHT AND ITS USE FOR PROTECTING SKIN AND HAIR
DE3612305A1 (en) * 1986-04-11 1987-10-22 Roehm Pharma Gmbh LIQUID MEDICINE FOR THERAPY OF PSORIASIS BASED ON FILM-FORMING POLYMERS
US5256403A (en) * 1987-01-05 1993-10-26 Gaskin Frances C Composition and method for protecting the skin from UV-rays
US4855144A (en) * 1987-10-23 1989-08-08 Advanced Polymer Systems Synthetic melanin aggregates
US4968497A (en) * 1988-08-26 1990-11-06 Clairol Incorporated Skin tanning composition and method
AU5195090A (en) * 1989-03-07 1990-10-09 Plough Inc. Liposome compositions
US5252628A (en) * 1989-12-07 1993-10-12 Lions Eye Institute Of Western Australia, Inc. Method of making photoprotective hydrophilic polymers and ocular devices thereof
US5227459A (en) * 1990-05-18 1993-07-13 Yale University Synthetic melanin

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