Claims
- 1. A hair colouring composition comprising:
a) one or more developers selected from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attack reactions; and b) one or more couplers selected from the group consisting of:
i) 1,3-diketones of the formula (I): 3 wherein X and Y are non-leaving substituents and Z is an active leaving group, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group Z; and ii) compounds of the formula (II): 4 wherein R1, R2, and R3 are independently selected from the group consisting of cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, —R′NHCOR, —CONHR, —R′CONHR, —R′OH, —R′SO2R, —R′SO2NHR, —R′OR, and —COR;
wherein R is selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, and aralkyl; and wherein R′ is selected from the group consisting of alkylene, alkenylene, cycloalkylene, cycloalkenylene, arylene, alkarylene, and aralkyrene, and substituted versions of any of these.
- 2. A hair colouring composition according to claim 1, wherein the couplers are selected from compounds of the formula (I).
- 3. A composition according to claim 1, wherein the composition comprises substantially no developer which is an amino aromatic system capable of being oxidised and thereafter undergoing a single electrophilic attack.
- 4. A composition according to claim 1, wherein the coupler is dimethyl acetoacetamide.
- 5. A composition according to claim 1, wherein the coupler is diethyl acetoacetamide.
- 6. A composition according to claim 1, wherein the one or more developers are selected from the group consisting of para and ortho disubstituted benzene compounds, disubstituted pyridine compounds, disubstituted pyrimidines, and diamino substituted pyrazoles.
- 7. A composition according to claim 6, wherein the developer is para-phenylene diamine.
- 8. A method of improving UV fade resistance of a colour delivered by a composition for colouring hair, said method comprising the steps of:
a) selecting one or more developers from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attack reactions; and b) selecting one or more couplers from the group consisting of:
i) 1,3-diketones of the formula (I): 5 wherein X and Y are non-leaving substituents and Z is an active leaving group, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group Z; and ii) compounds of the formula (II): 6 wherein R1, R2, and R3 are independently selected from the group consisting of cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, —R′NHCOR, —CONHR, —R′CONHR, —R′OH, —R′SO2R, —R′SO2NHR, —R′OR, and —COR;
wherein R is selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, and aralkyl; and wherein R′ is selected from the group consisting of alkylene, alkenylene, cycloalkylene, cycloalkenylene, arylene, alkarylene, and aralkyrene, and substituted versions of any of these.
- 9. A method according to claim 8, wherein the composition for colouring hair contains at least one coupler selected from compounds of the formula (I).
- 10. A method according to claim 8, wherein the developer is selected from the group consisting of para and ortho disubstituted benzene compounds, disubstituted pyridine compounds, disubstituted pyrimidines, and diamino substituted pyrazoles.
- 11. A method according to claim 10, wherein the developer is para-phenylene diamine.
- 12. A method according to claim 8, wherein the composition comprises substantially no developer which is an amino aromatic system capable of being oxidised and thereafter undergoing a single electrophilic attack
- 13. A method according to claim 8, wherein the coupler is dimethyl acetoacetamide.
- 14. A method according to claim 8, wherein the coupler is diethyl acetoacetamide.
- 15. A method for colouring hair comprising:
a) applying to the hair one or more developers selected from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attack reactions; and b) applying one or more couplers selected from the group consisting of:
i) 1,3-diketones of the formula (I): 7 wherein X and Y are non-leaving substituents and Z is an active leaving group, such that in the presence of an oxidising agent the or each developer reacts with the or each coupler substantially only at the position having the active leaving group Z; and ii) compounds of the formula (H): 8 wherein R1, R2, and R3 are independently selected from the group consisting of cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, —R′NHCOR, —CONHR, —R′CONHR, —R′OH, —R′SO2R, —R′SO2NHR, —R′OR, and —COR;
wherein R is selected from the group consisting of H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, and aralkyl; and wherein R′ is selected from the group consisting of alkylene, alkenylene, cycloalkylene, cycloalkenylene, arylene, alkarylene, and aralkyrene, and substituted versions of any of these.
- 16. A hair colouring kit comprising:
a) an individually packaged colouring component comprising:
i) one or more developers selected from amino aromatic systems capable of being oxidised and thereafter undergoing at least two electrophilic attack reactions; and ii) one or more couplers selected from the group consisting of compounds of the formula (I) and compounds of the formula (II); and b) an individually packaged oxidising component.
Priority Claims (1)
Number |
Date |
Country |
Kind |
0108615.6 |
Apr 2001 |
GB |
|
CROSS REFERENCE TO RELATED APPLICATION
[0001] The application is a continuation of International application PCT/US02/10625 (Case CM2530F) filed on Apr. 4, 2002.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/US02/10625 |
Apr 2002 |
US |
Child |
10679776 |
Oct 2003 |
US |