RU95120189A

RU95120189A - NEW DI- OR THREE ORGANO-SILOXANES, SOLAR FILTERS AND CONTAINING THEIR PHOTO PROTECTIVE COSMETIC COMPOSITIONS ON THEIR BASIS

Info

Publication number: RU95120189A
Application number: RU95120189/04A
Authority: RU
Inventors: Ришар Эрве; Ледюк Мадлен; Лягранж Алан
Original assignee: Л'Ореаль
Priority date: 1994-11-17
Filing date: 1995-11-16
Publication date: 1997-10-20

Claims

1. New di- or tri-organosiloxanes of the following formulas (1) - (3)

or

or AS (R ^' ) ₃ (3)
in which R, the same or different, is chosen from among C ₁ - C ₁₀ -alkyl radicals, phenyl and 3,3,3-trifluoro-propyl radicals, at least 80% of the total number of R radicals being methyl;
B, the same or different, are selected from among the above-mentioned radicals R and the lower-defined radical A;
R _' , identical or different, are selected from C ₁ -C ₈ - alkyl radicals or phenyl;
r is an integer from 0 to 50 inclusive;
s denotes an integer equal to 0 or 1, provided that if s is zero, then at least one of the two symbols B denotes A;
t is an integer from 2 to 10 inclusive;
the symbol A denotes a radical directly bonded to the silicon atom and which corresponds to the following formula (4):

in which X denotes a divalent radical-Y- of the following formula (5)

in which R ₂ denotes a hydrogen atom or a C ₁ -C ₄ -alkyl radical;
p is an integer from 0 to 10 inclusive;
m is 0 or 1;
the terminal —CH ₂ group is directly bonded to the silicon atom;
Z represents a hydrogen atom or a divalent radical —Y—;
q denotes an integer from 0 to 3 inclusive;
R ¹ , the same or different, is chosen from C ₁ -C ₈ - alkyl radicals or C ₁ -C ₆ alkoxy radicals, meaning that in this latter case, the two estimated radicals R ¹ (q≥2) can form dioxyalkylidene a group in which the alkylidene group contains 1 or 2 carbon atoms.

2. New di- or tri-organosiloxanes according to claim 1 of formula (1) or formula (2), where the radicals R are alkyl radicals.

3. New di - or three-organosiloxanes on PP. 1 and 2 of formula (1) or formula (2), where the radicals R are methyl, ethyl, propyl, n-butyl, n-octyl or 2-ethyl-hexyl radicals.

4. New di-or three-organosiloxanes on PP. 1 - 3 formulas (1) or (2), where the radicals R are methyl radicals.

5. New di-or three-organosiloxanes on PP. 1 to 4 of formula (1), where the radicals B are alkyl radicals.

6. New di-or three-organosiloxanes on PP. 1 to 5 of formula (1), where the radicals B are methyl, ethyl, propyl, n-butyl, n-octyl or 2-ethyl-hexyl radicals.

7. New di-or three-organosiloxanes on PP. 1 - 6 of formula (1), where the radicals B are methyl radicals.

8. New di-or three-organosiloxanes on PP. 1 to 7 of formula (1), where r denotes a number from 0 to 3 inclusive.

9. New di-or three-organosiloxanes on PP. 1 - 4 formulas (2), where t denotes the number 2 - 4 inclusive.

10. New di- or tri-organosiloxanes according to claim 1 of formula (3), where the radicals R ^′ are alkyl radicals selected from methyl, ethyl, propyl, n-butyl, n-octyl or 2-hexyl radicals.

11. New di- or tri-organosiloxanes on PP. 1 - 10 formulas (3), where the radicals R ^' are methyl radicals.

12. New di-or three-organosiloxanes on PP. 1 - 11 of formula (3), where X is in the ortho or para position of the aromatic cycle containing it.

13. New di- or tri-organosiloxanes on PP. 1 - 12 of formula (3), where Z denotes - Y- and is in the ortho or para position of the aromatic cycle containing it.

14. New di-or three-organosiloxanes on PP. 1 to 13 of formula (3), where q is not zero and preferably is 1 and R ^' denotes an alkoxy group, preferably a methoxy group.

15. New di-or three-organosiloxanes on PP. 1 - 13 of formula (3), where q is zero.

16. New di-or three-organosiloxanes on PP. 1 - 15 formulas (3), where in the divalent radical -Y- p is 0 or 1.

17. New di- or three-organosiloxanes on PP. 1 - 16 of formula (3) where, in the divalent radical, —Y— R ² represents hydrogen or a methyl radical.

18. Solar filters, active in the field of UV-A and / or UV-B, based on compounds of the formula (1) to (3) in PP. 1 - 17.

19. Cosmetic composition, in particular for filtering ultraviolet rays, characterized in that it contains in a cosmetically acceptable carrier an effective amount of at least one of the filtering compounds of formula (1) - (3) in PP. 1 - 17.

20. Cosmetic composition according to p. 19, characterized in that the cosmetically acceptable carrier contains at least one fatty phase or an organic solvent.

21. Cosmetic composition according to paragraphs. 19 to 20, characterized in that the cosmetically acceptable carrier is in the form of an oil-in-water or water-in-oil emulsion, preferably oil-in-water.

22. Cosmetic composition according to paragraphs. 19 to 22, characterized in that the content of the filtering compound (filtering compounds) is 0.1 to 20 wt.%, Calculated on the total weight of the composition.

23. Cosmetic composition according to p. 22, characterized in that the above amount is 0.5 - 10 wt.%.

24. A method of protecting skin and / or hair from ultraviolet radiation, in particular from solar radiation, characterized in that it consists in applying to the skin and / or hair an effective amount of at least one filtering compound or at least one composition, such as indicated in any of paragraphs. 1 - 23.