Cosmetic or dermatological composition comprising a merocyanine and an oily phase comprising at least one alkyl or alkylene carbonate

1. A cosmetic or dermatological composition comprising:

a) at least one merocyanine corresponding to either of formulae (1) and (2) below or an E/E- or E/Z-geometrical isomer form thereof:

in which:

R 1 and R 2 , independently of each other, are hydrogen; a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, or a C 2 -C 22 alkynyl group, these groups possibly being substituted with at least one hydroxyl group or else interrupted with at least one —O—; or else R 1 and R 2 form, together with the nitrogen atom which links them, a —(CH 2 ) n — ring which may be optionally interrupted with —O— or —NH—;

R 3 is a —(C═O)OR 6 group; or a —(CO)NHR 6 group;

R 6 is a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, a C 2 -C 22 alkynyl group, a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, said groups possibly being substituted with one or more OH;

R 4 and R 5 are hydrogens; or R 4 and R 5 form a —(CH 2 ) n — ring which may be substituted with a C 1 -C 4 alkyl group and/or interrupted with one or more —O— or with —NH—;

R 7 and R 8 , independently of each other, are hydrogen; a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, a C 2 -C 22 alkynyl group, said groups possibly being interrupted with one or more O and/or substituted with one or more OH; a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, said groups possibly being interrupted with one or more —O—;

or else R 7 and R 8 form, together with the nitrogen which links them, a —(CH 2 ) n ring which may be interrupted with one or more —O—;

R 9 and R 10 are hydrogen; or R 9 and R 10 form a —(CH 2 ) n — ring potentially substituted with a C 1 -C 4 alkyl and/or interrupted with an —O— or —NH—;

A is —O—; or —NH;

R 11 is a C 1 -C 22 alkyl group; a C 2 -C 22 alkenyl group; a C 2 -C 22 alkynyl group; a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, said groups possibly being interrupted with one or more O; or a C 1 -C 22 alkyl group or a C 2 -C 22 alkenyl group which is substituted with a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, said C 3 -C 22 cycloalkyl group or C 3 -C 22 cycloalkenyl group possibly being interrupted with one or more —O—;

n is a number between 2 and 7; and,

b) at least one oily phase comprising at least one alkyl or alkylene carbonate.

2. The composition according to claim 1 , in which the compounds of formula (1) are chosen from those for which:

R 6 is a C 1 -C 12 alkyl group, which may be substituted with one or more hydroxyls.

3. The composition according to claim 1 in which the compounds of formula (1) are chosen from those for which:

R 6 is a C 1 -C 12 alkyl group, which may be substituted with one or more hydroxyls;

one of the R 1 or R 2 radicals is a C 4 -C 22 alkyl group; or else R 1 and R 2 form, together with the nitrogen which links them, a —(CH 2 ) n — ring which may be interrupted with —O— and/or —NH—; and

R 4 and R 5 and n have the same meanings indicated in claim 1 .

4. The composition according to claim 1 , in which the compounds of formula (2) are chosen from those for which:

R 11 is a —(CH 2 ) m —O—R 12 radical, in which

R 12 is a C 1 -C 12 alkyl group; or a C 1 -C 6 alkoxy-C 1 -C 6 alkyl group;

m is a number from 1 to 5.

5. The composition according to claim 1 , in which the compounds of formula (1) or (2) are chosen from those for which:

R 1 and R 2 , on the one hand, and R 7 and R 8 , on the other hand, respectively form, together with the nitrogen atom to which they are respectively bonded, a piperidyl radical or a morpholinyl radical.

6. The composition according to claim 1 , in which the compounds of formula (1) or (2) are chosen from those for which:

R 4 and R 5 and R 9 and R 10 respectively form a carbon-based ring which contains 6 carbon atoms.

7. The composition according to claim 1 , in which the compounds of formula (1) are chosen from those for which:

R 1 and R 2 , independently of each other, are hydrogen; or a C 1 -C 22 alkyl group; or a C 1 -C 22 hydroxyalkyl group; or R 1 and R 2 form, together with the nitrogen atom to which they are bonded, a piperidyl or morpholinyl radical;

R 3 is a —(C═O)OR 6 group; or a —(CO)NHR 6 group;

R 6 is a C 1 -C 22 alkyl group, which may be substituted with one or more —OH;

R 4 and R 5 are hydrogen; or R 4 and R 5 are linked together to form a carbon-based ring which contains 6 carbon atoms.

8. The composition according to claim 1 , in which the compounds of formula (1) are chosen from those for which:

R 1 and R 2 , independently of each other, are a hydrogen; or a C 1 -C 22 hydroxyalkyl group; in which at least one of the R 1 and R 2 radicals is a C 1 -C 22 hydroxyalkyl group;

R 3 is a —(C═O)OR 6 group; or a —(C═O)NHR 6 group;

R 6 is a C 1 -C 12 alkyl group;

R 4 and R 5 are hydrogens; or R 4 and R 5 are bonded together to form a carbon-based ring which contains 6 carbon atoms.

9. The composition according to claim 1 , in which the compounds of formula (2) are chosen from those for which:

R 7 and R 8 , independently of each other, are a hydrogen or a C 1 -C 8 alkyl group, which may be interrupted with one or more —O—;

A is —O— or —NH;

R 11 is a C 1 -C 22 alkyl; and

R 9 and R 10 are a hydrogen; or R 9 and R 10 are bonded together to form a carbon-based ring which contains 6 carbon atoms.

10. The composition according to claim 1 , in which the compounds of formula (2) are chosen from those for which:

R 7 and R 8 form, together with the nitrogen atom to which they are bonded, a morpholinyl or piperidyl radical;

A is —O—; or —NH;

R H is a C 1 -C 22 alkyl group, which may be interrupted with one or more —O—; and

R 9 and R 10 are hydrogens; or R 9 and R 10 are bonded together to form a carbon-based ring which contains 6 carbon atoms.

11. The composition according to claim 1 , in which the compounds of formula (2) are chosen from those for which:

R 11 is a —(CH 2 ) m —O—R 12 radical, in which

R 12 is a C 1 -C 4 alkyl group; or a C 1 -C 4 alkoxy-C 1 -C 4 alkyl group;

m is a number from 1 to 3; and

R 7 and R 8 , independently of each other, are hydrogen; or a C 1 -C 12 alkyl group, which may be interrupted with one or more O; or R 7 and R 8 form, together with the nitrogen atom to which they are bonded, a morpholinyl or piperidyl radical;

R 9 and R 10 are hydrogens or together form a carbon-based ring which contains 6 carbon atoms; and

A is —O— or —NH.

12. The composition according to claim 1 , in which the compounds of formula (1) or (2) are chosen from the following compounds and also the E/E- or E/Z-geometrical isomer forms thereof:

TABLE A

Compound

Structure

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

13. The composition according to claim 1 , in which the compounds of formula (1) or (2) are chosen from those corresponding to formula (3) below and also the E/E- or E/Z-geometrical isomer forms thereof:

in which

A is —O— or —NH;

R is a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, a C 2 -C 22 alkynyl group, a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, said groups possibly being interrupted with one or more O.

14. The composition according to claim 13 , in which the merocyanines of formula (3) are chosen from the following compounds and also the E/E- or E/Z-geometrical isomer forms thereof:

14

  ethyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

15

  (2Z)-2-cyano-N-(3-methoxypropyl)-2-{3- [(3-methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanamide

25

  2-ethoxyethyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

27

  2-methylpropyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

29

  2-butoxyethyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

31

  3-methoxypropyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

37

  3-ethoxypropyl (2Z)-cyano{3-[(3- methoxypropyl)amino]cyclohex-2-en-1- ylidene}ethanoate

15. The composition according to claim 14 , in which the merocyanine of formula (3) is chosen from the compound 2-ethoxyethyl (2Z)-cyano{3-[(3-methoxypropyl)amino]cyclohex-2-en-1-ylidene}ethanoate (25) and/or the compound ethyl (2Z)-cyano[3-[(3-methoxypropyl)amino]cyclohex-2-en-1-ylidene]ethanoate (14) and mixtures thereof and preferably the compound (25).

16. The composition according to claim 1 , in which the merocyanine(s) are present in a concentration ranging from 0.1% to 25% by weight relative to the total weight of the composition.

17. The composition or dermatological composition according to claim 1 , comprising:

a) at least a merocyanine corresponding to formula (3) and also the E/E- or E/Z-geometrical isomer forms:

in which:

A is —O— or —NH;

R is a C1-C22 alkyl group, a C2-C22 alkenyl group, a C2-C22 alkynyl group, a C3-C22 cycloalkyl group or a C3-C22 cycloalkenyl group, said groups possibly being interrupted with one or more O;

b) at least one oily phase comprising at least one alkyl or alkylene carbonate, present in concentrations ranging from 0.1% to 98% by weight relative to the total weight of the composition.

18. The composition according to claim 1 , in which the alkylene chain(s) of the alkylene carbonate(s) is (are) a C2-C6 alkyl radical;

and/or in which the alkyl radical(s) of the alkyl carbonate(s) is (are) a C1-C6 alkyl radical.

19. The composition according to claim 1 , in which the sum of the carbons of the alkylene chain(s) of alkylene carbonate(s) and/or the sum of the carbons of the alkyl radical(s) of alkyl carbonate(s) is (are) ranging from 2 to 6 carbon atoms.

20. The composition according to claim 1 , in which the alkylene carbonate(s) are chosen from the alkylene carbonates of formula (4) below:

in which formula (4)

R′ denotes a hydrogen atom, a linear or branched C 1 -C 6 alkyl radical, a linear or branched C 1 -C 4 hydroxyalkyl radical;

R″ represents a hydrogen atom, a linear or branched C 1 -C 6 alkyl radical, a linear or branched C 1 -C 4 hydroxyalkyl radical;

m is 1, 2 or 3.

21. The composition according to claim 1 , in which the alkylene carbonate(s) are chosen from the alkylene carbonates of formula (4) below:

in which formula (4)

the radical R′ represents a hydrogen atom, a linear or branched C 1 -C 4 alkyl radical, a linear C 1 -C 2 hydroxyalkyl radical;

R″ represents a hydrogen atom, a linear or branched C 1 -C 2 alkyl radical, a linear C 1 -C 2 hydroxyalkyl radical,

and m is 1.

22. The composition according to claim 1 , in which the alkylene carbonate(s) are chosen from ethylene carbonate, propylene carbonate, 1,2-butylene carbonate and glyceryl carbonate.

23. The composition according to claim 1 , in which the alkyl carbonate(s) are chosen from those of formula (5) below:

R′—O—CO—O—R″

in which formula (5)

R′ denotes a linear or branched C 1 -C 5 alkyl radical, a linear or branched C 1 -C 4 hydroxyalkyl radical;

R″ represents a linear or branched C 1 -C 5 alkyl radical, a linear or branched C 1 -C 4 hydroxyalkyl radical;

the sum of the carbons of R′ and R″ ranging from 2 to 6.

24. The composition according to claim 1 , in which the alkyl carbonate(s) are chosen from diethyl carbonate and dipropyl carbonate.

25. The composition according to claim 1 , in which the alkyl or alkylene carbonate(s) are present in concentrations ranging from 0.1% to 98% by weight relative to the total weight of the composition.

26. The composition according to claim 1 , further comprising an additional UV-screening agent.

27. The composition according to claim 1 , in which the merocyanine(s) are present in a concentration ranging from 0.1% to 25% by weight relative to the total weight of the composition, the alkyl or alkylene carbonate(s) are present in concentrations ranging from 0.1% to 98% by weight relative to the total weight of the composition and the at least one oily phase is present in a concentration ranging from 5% to 98% by weight relative to the total weight of the composition.

28. The composition according to claim 1 , in which the merocyanine(s) are present in a concentration ranging from 0.2% to 20% by weight relative to the total weight of the composition, the alkyl or alkylene carbonate(s) are present in concentrations ranging from 0.5% to 50% by weight relative to the total weight of the composition and the at least one oily phase is present in a concentration ranging from 10% to 80% by weight relative to the total weight of the composition.

29. The composition according to claim 1 , in which the merocyanine(s) are present in a concentration ranging from 0.5% to 10% by weight relative to the total weight of the composition, the alkyl or alkylene carbonate(s) are present in concentrations ranging from 5% to 15% by weight relative to the total weight of the composition and the at least one oily phase is present in a concentration ranging from 10% to 80% by weight relative to the total weight of the composition.

30. A non-therapeutic cosmetic process for caring for and/or making up a keratin material, comprising application, to a surface of said keratin material, of at least one composition as defined in claim 1 .

31. A non-therapeutic cosmetic process for limiting darkening of skin and/or improving colour and/or uniformity of a complexion, comprising application, to a surface of the skin, of at least one composition as defined in claim 1 .

32. A non-therapeutic cosmetic process for preventing and/or treating signs of ageing of a keratin material, comprising application, to a surface of the keratin material, of at least one composition as defined in claim 1 .