Method of quenching electronic excitation of chromophore-containing organic molecules in photoactive compositions
View Patent ↗The photostabilizing electronic excited state energy—particularly singlet state energy from a UV-absorbing molecule has been found to be readily transferred to (accepted by) α-cyanodiphenylacrylate compounds of formulas (I) and (V) having an alkoxy radical preferably in the four (para) position (hereinafter methoxycrylenes) on one or both of the phenyl rings: wherein at least one of R 1 and R 2 is a straight or branched chain C 1 -C 12 alkoxy radical, preferably C 1 -C 8 , more preferably C 1 -C 4 , and most preferably methoxy, and any non-alkoxy radical R 1 or R 2 is hydrogen; and R 3 is a straight or branched chain C 1 -C 24 alkyl radical, preferably C 12 -C 24 , more preferably C 20 ; wherein A and B are the same or different and are selected from the group consisting of oxygen, amino and sulfur; R 1 and R 3 are the same or different and are selected from the group consisting of C 1 -C 30 alkyl, C 2 -C 30 alkylene, C 2 -C 30 alkyne, C 3 -C 8 cycloalkyl, C 1 -C 30 substituted alkylene, C 2 -C 30 substituted alkyne, aryl, substituted aryl, heteroaryl, heterocycloalkyl, substituted heteroaryl and substituted heterocycloalkyl; R 2 is selected from the group consisting of C 1 -C 30 alkyl, C 2 -C 30 alkylene, C 2 -C 30 alkyne, C 3 -C 8 cycloalkyl, C 1 -C 30 substituted alkyl, C 3 -C 8 substituted cycloalkyl, C 1 -C 30 substituted alkylene, C 2 -C 30 substituted alkyne; R 4 , R 5 , R 6 and R 7 are the same or different and are selected from the group consisting of C 1 -C 30 alkoxy straight chin on branched and a, b, c and d are each either 0 or 1, and a, b, c and d add up to 1, 2, 3, or 4.
1. A method of solubilizing a triazine compound in a sunscreen or dermatological formulation which comprises adding a solubilizing amount of at least 0.1%, based on the total weight of the sunscreen or dermatological formulation, of an alkoxycrylene of formula I:
wherein one of R 1 and R 2 is a straight or branched chain C 1 -C 30 alkoxy radical, and the non-alkoxy R 1 or R 2 is hydrogen; and R 3 is a straight or branched chain C 1 -C 30 alkyl radical.
2. The method of claim 1 , wherein R 1 is methoxy and R 2 is hydrogen.
3. The method of claim 1 , wherein R 2 is methoxy and R 1 is hydrogen.
4. The method of claim 3 , wherein R 3 is a C 6 -C 24 straight chain or branched alkyl.
5. The method of claim 1 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 20%, based on the total weight of the composition.
6. The method of claim 5 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 10%, based on the total weight of the composition.
7. The method of claim 6 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 5%, based on the total weight of the composition.
8. The method of claim 6 , wherein the compound of formula (I) is present in an amount in the weight range of 3% to 8%, based on the total weight of the composition.
9. The method of claim 1 , wherein the molar ratio of a compound of formula (I) to the photoactive compound is less than 0.8.
10. The method of claim 9 , wherein the molar ratio of the compound of formula (I) to the photoactive compound is about 0.1 to about 0.6.
11. The method of claim 1 , further including adding a photoactive compound selected from the group consisting of p-aminobenzoic acid and salts and derivatives thereof; anthranilate and derivatives thereof; dibenzoylmethane and derivatives thereof; salicylate and derivatives thereof; cinnamic acid and derivatives thereof; dihydroxycinnamic acid and derivatives thereof; camphor and salts and derivatives thereof; trihydroxycinnamic acid and derivatives thereof; dibenzalacetone; dibenzalacetone naphtholsulfonate and salts and derivatives thereof; benzalacetophenone naphtholsulfonate and salts and derivatives thereof; dihydroxy-naphthoic acid and salts thereof; o-hydroxydiphenyldisulfonate and salts and derivatives thereof; p-hydroxydiphenyldisulfonate and salts and derivatives thereof; coumarin and derivatives thereof; diazole derivatives; quinine derivatives and salts thereof; quinoline derivatives; hydroxyl-substituted benzophenone derivatives; methoxy-substituted benzophenone derivatives; uric acid derivatives; vilouric acid derivatives; tannic acid and derivatives thereof; hydroquinone; benzophenone derivatives; phenyldibenzimidazole tetrasulfonate and salts and derivatives thereof; terephthalylidene dicamphor sulfonic acid and salts and derivatives thereof; methylene bis-benzotriazolyl tetramethylbutylphenol and salts and derivatives thereof; bis-ethylhexyloxyphenol; and combinations of the foregoing.
12. The method of claim 11 , wherein the photoactive compound comprises a dibenzoylmethane derivative.
13. The method of claim 12 , wherein the photoactive compound comprises a dibenzoylmethane derivative selected from the group consisting of 2-methyldibenzoylmethane; 4-methyldibenzoylmethane; 4-isopropyldibenzoylmethane; 4-tert-butyldibenzoylmethane; 2,4-dimethyldibenzoylmethane; 2-5-dimethyldibenzoylmethane; 4,4-diisopropyldibenzoylmethane; 4,4-dimethoxydibenzoylmethane; 4-tert-butyl-4-methoxdibenzoylmethane; 2-methyl-5-isopropy-4-methoxydibenzoylmethane; 2-methyl-5-tert-butyl-4-methoxydibenzoylmethane; 2,4-dimethyl-4-methoxydibenzoymethane; 2,6-dimethyl-4-tert-butyl-4-methoxydibenzoylmethane, and combinations thereof.
14. The method of claim 11 , wherein the photoactive compound comprises a combination of a derivative of cinnamic acid and a dibenzoylmethane derivative.
15. The method of claim 14 , wherein the derivative of cinnamic acid comprises 2-ethylhexyl-p-methoxycinnamate.
16. The method of claim 1 , further comprising adding a diester or polyester of naphthalene dicarboxylic acid selected from the group consisting of compounds of formula (II) and (III), and combinations thereof:
wherein R 1 and R 2 are the same or different and selected from the group consisting of C 1 -C 22 alkyl groups, diols having the structure HO—R 4 —OH, and polyglycols having the structure HO—R 3 —(—O—R 4 -)n-OH; wherein each R 3 and R 4 is the same or different and selected from the group consisting of C 1 -C 6 straight or branched chain alkyl groups; and wherein m and n are each in a range of 1 to 100.
17. The method of claim 16 , comprising a diester of formula (III) wherein R 1 and R 2 are 2-ethylhexane.
18. The method of claim 1 , further including a cosmetically acceptable carrier.
19. A method of solubilizing a benzotriazole compound in a sunscreen or dermatological formulation which comprises adding a solubilizing amount of at least 0.1%, based on the total weight of the sunscreen or dermatological formulation, of one or more alkoxycrylene of formula I:
wherein one of R 1 and R 2 is a straight or branched chain C 1 -C 30 alkoxy radical, and the non-alkoxy R 1 or R 2 is hydrogen; and R 3 is a straight or branched chain C 1 -C 30 alkyl radical.
20. The method of claim 19 , wherein R 1 is methoxy and R 2 is hydrogen.
21. The method of claim 19 , wherein R 2 is methoxy and R 1 is hydrogen.
22. The method of claim 21 , wherein R 3 is a C 6 -C 24 straight chain or branched alkyl.
23. The method of claim 19 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 20%, based on the total weight of the composition.
24. The method of claim 23 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 10%, based on the total weight of the composition.
25. The method of claim 24 , wherein the compound of formula (I) is present in an amount in the weight range of 0.1% to 5%, based on the total weight of the composition.
26. The method of claim 24 , wherein the compound of formula (I) is present in an amount in the weight range of 3% to 8%, based on the total weight of the composition.
27. The method of claim 19 , wherein the molar ratio of the compound of formula (I) to the photoactive compound is less than 0.8.
28. The method of claim 27 , wherein the molar ratio of the compound of formula (I) to the photoactive compound is about 0.1 to about 0.6.
29. The method of claim 19 , further including adding a photoactive compound selected from the group consisting of p-aminobenzoic acid and salts and derivatives thereof; anthranilate and derivatives thereof; dibenzoylmethane and derivatives thereof; salicylate and derivatives thereof; cinnamic acid and derivatives thereof; dihydroxycinnamic acid and derivatives thereof; camphor and salts and derivatives thereof; trihydroxycinnamic acid and derivatives thereof; dibenzalacetone naphtholsulfonate and salts and derivatives thereof; benzalacetophenone naphtholsulfonate and salts and derivatives thereof; dihydroxy-naphthoic acid and salts thereof; o-hydroxydiphenyldisulfonate and salts and derivatives thereof; p-hydroxydiphenyldisulfonate and salts and derivatives thereof; coumarin and derivatives thereof; diazole derivatives; quinine derivatives and salts thereof; quinoline derivatives; hydroxyl-substituted benzophenone derivatives; methoxy-substituted benzophenone derivatives; uric acid derivatives; vilouric acid derivatives; tannic acid and derivatives thereof; hydroquinone; benzophenone derivatives; 1,3,5-triazine derivatives; phenyldibenzimidazole tetrasulfonate and salts and derivatives thereof; terephthalylidene dicamphor sulfonic acid and salts and derivatives thereof; bis-ethylhexyloxyphenol; and combinations of the foregoing.
30. The method of claim 29 , wherein the photoactive compound comprises a dibenzoylmethane derivative.
31. The method of claim 30 , wherein the photoactive compound comprises a dibenzoylmethane derivative selected from the group consisting of 2-methyldibenzoylmethane; 4-methyldibenzoylmethane; 4-isopropyldibenzoylmethane; 4-tert-butyldibenzoylmethane; 2,4-dimethyldibenzoylmethane; 2-5-dimethyldibenzoylmethane; 4,4-diisopropyldibenzoylmethane; 4,4-dimethoxydibenzoylmethane; 4-tert-butyl-4-methoxydibenzoylmethane; 2-methyl-5-isopropy-4-methoxydibenzoylmethane; 2-methyl-5-tert-butyl-4-methoxydibenzoylmethane; 2,4-dimethyl-4-methoxydibenzoylmethane; 2,6-dimethyl-4-tert-butyl-4-methoxydibenzoylmethane, and combinations thereof.
32. The method of claim 29 , wherein the photoactive compound comprises a combination of a derivative of cinnamic acid and a dibenzoylmethane derivative.
33. The method of claim 32 , wherein the derivative of cinnamic acid comprises 2-ethylhexyl-p-methoxycinnamate.
34. The method of claim 19 , further comprising adding a diester or polyester of naphthalene dicarboxylic acid selected from the group consisting of compounds of formula (II) and (III), and combinations thereof:
wherein R 1 and R 2 are the same or different and selected from the group consisting of C 1 -C 22 alkyl groups, diols having the structure HO—R 4 —OH, and polyglycols having the structure HO—R 3 —(—O—R 4 -)n-OH; wherein each R 3 and R 4 is the same or different and selected from the group consisting of C 1 -C 6 straight or branched chain alkyl groups; and wherein m and n are each in a range of 1 to 100.
35. The method of claim 34 , comprising a diester of formula (III) wherein R1 and R2 are 2-ethylhexane.
36. The method of claim 19 , further including a cosmetically acceptable carrier.
37. The method of claim 19 , further including an oil phase having a dielectric constant of at least about 8.