Photostable cosmetic screening composition containing a UV-A screening agent and an alkyl .beta., .beta.-diphenylacrylate or .alpha.-cyano-.beta. , .beta.-diphenylacrylate
DCFirst Claim
1. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl β
- , β
-diphenylacrylate or a α
-cyano-β
,β
-diphenylacrylate of formula;
##STR2## in which R1 and R'"'"'1, which may be identical or different, represent a hydrogen atom, a straight- or branched-chain C1 -C8 alkoxy radical or a straight- or branched-chain C1 -C4 alkyl radical, R1 and R'"'"'1 being in the para or meta position;
R2 represents a straight- or branched-chain C1 -C12 alkyl radical; and
R3 represents hydrogen atom or a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
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Abstract
A photostable cosmetic screening composition and process for protection of the human epidermis against UV rays of wavelengths between 280 and 380 nm, the composition having, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl β-β-diphenylacrylate or α-cyano-β-β-diphenylacrylate of formula (I), the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
65 Citations
33 Claims
-
1. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative and at least 1% by weight of an alkyl β
- , β
-diphenylacrylate or a α
-cyano-β
,β
-diphenylacrylate of formula;
##STR2## in which R1 and R'"'"'1, which may be identical or different, represent a hydrogen atom, a straight- or branched-chain C1 -C8 alkoxy radical or a straight- or branched-chain C1 -C4 alkyl radical, R1 and R'"'"'1 being in the para or meta position;
R2 represents a straight- or branched-chain C1 -C12 alkyl radical; andR3 represents hydrogen atom or a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- , β
-
16. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative selected from the group consisting of 2-methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyl-dibenzoylmethane, 4-tert-butyldibenzoylmethane, 2,4-dimethyldibenzoylmethane, 2,5-dimethyldibenzoylmethane, 4,4'"'"'-diisopropyldibenzoylmethane, 2-methyl-5-isopropyl-4'"'"'-methoxydibenzoylmethane, 2-methyl-5-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2,4-dimethyl-4'"'"'-methoxydibenzoylmethane and 2,6-dimethyl-4-tert-butyl-4'"'"'-methoxydibenzoylmethane and at least 1% by weight of an alkyl β
- ,β
-diphenylacrylate or a α
-cyano-β
,β
-diphenylacrylate of formula;
##STR3## in which R1 and R'"'"'1, which may be identical or different, represent a hydrogen atom, a straight- or branched-chain C1 -C8 alkyl radical or a straight- or branched-chain C1 -C4 alkyl radical, R1 and R'"'"'1 being in the para or meta position;
R2 represents a straight- or branched-chain C1 -C12 alkyl radical; andR3 represents a hydrogen atom or a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
- ,β
-
17. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative selected from the group consisting of 2-methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyl-dibenzoylmethane, 4-tert-butyldibenzoylmethane, 2,4-dimethyldi-benzoylmethane, 2,5-dimethyldibenzoylmethane, 4,4'"'"'-diisopropyldi-benzoylmethane, 4-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2-methyl-5isopropyl-4'"'"'-methoxydibenzoylmethane-2-methyl-5-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2,4-diemthyl-4'"'"'-methoxydibenzoylmethane and 2,6-dimethyl-4-tert-butyl-4'"'"'-methoxydibenzoylmethane and at least 1% by weight of an alkyl β
- ,β
-diphenylacrylate or a α
-cyano-β
,β
-diphenylacrylate of formula;
##STR4## in which R1 and R'"'"'1, which may be identical or different, represent a hydrogen atom, a straight- or branched-chain C1 -C8 alkoxy radical or a straight- or branched-chain C1 -C4 alkyl radical, R1 and R'"'"'1 being in the para or meta position;
R2 represents a straight- or branched-chain C1 -C12 alkyl radical; andR3 represents a hydrogen atom or a --CN radical, with the proviso that R3 represents a hydrogen atom when R1 and R'"'"'1 represents a hydrogen atom and R2 represents a 2-ethylhexyl radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
- ,β
-
18. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative, said dibenzoylmethane derivative being selected from the group consisting of 2-methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyldibenzoylmethane, 4-tert-butyldibenzoylmethane, 2,4-dimethyldibenzoylmethane, 2,5-dimethyldibenzoylmethane, 4,4'"'"'-diisopropyldibenzoylmethane, 2-methyl-5-isopropyl-4'"'"'-methoxydibenzoylmethane, 2-methyl-5-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2,4-diemthyl-4'"'"'-methoxydibenzoylmethane and 2,6-dimethyl-4-tert-butyl-4'"'"'-methoxydibenzoylmethane and at least 1% by weight of an acrylate selected from the group consisting of 2-ethylhexyl-α
- -cyano-β
,β
-diphenylacrylate, ethyl α
-cyano-β
,β
-diphenylacrylate, 2-ethylhexyl β
,β
-diphenylacrylate and ethyl β
,β
-bis(4-methoxyphenyl)acrylate, the mole ratio of the acrylate to the dibenzoylmethane derivative being not less than 0.8.
- -cyano-β
-
19. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which consists essentially of a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative, said dibenzoylmethane derivative being selected from the group consisting of 2-methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyldibenzoylmethane, 4-tert-butyldibenzoylmethane, 2,4-dimethyldibenzoylmethane, 2,5-diemthyldibenzoylmethane, 4,4'"'"'-diisopropyldibenzoylmethane, 4-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2-methyl-5-isopropyl-4'"'"'-methoxydibenzoylmethane, 2-methyl-5-tert-butyl-4'"'"'-methoxydibenzoylmethane, 2,4-dimethyl-4'"'"'-methoxydibenzoylmethane and 2,6-diemthyl-4-tert-butyl-4'"'"'-methoxydibenzoylmethane and at least 1% by weight of an acrylate selected from the group consisting of ethyl α
- -cyano-β
,β
-diphenylacrylate, 2-ethylhexyl β
,β
-diphenylacrylate and ethyl β
,β
-bis(4-methoxyphenyl)acrylate, the mole ratio of the acrylate to the dibenzoylmethane derivative being not less than 0.8.
- -cyano-β
-
20. In an improved photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, a dibenzoylmethane derivative, wherein the improvement consists essentially of adding at least 1% by weight of an alkyl β
- ,β
-diphenylacrylate or a α
-cyano-β
,β
-diphenylacrylate of formula;
##STR5## in which R1 and R'"'"'1 which may be identical or different, represent a hydrogen atom, a straight- or branched-chain C1 -C8 alkoxy radical or a straight- or branched-chain C1 -C4 alkyl radical, R1 and R'"'"'1 being in the para or meta position;R2 represents a straight- or branched-chain C1 -C12 alkyl radical; and R3 represents hydrogen atom or a --CN radical, to said cosmetically acceptable vehicle consisting essentially of 1 to 5% by weight of dibenzoylmethane derivative, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8, whereby the dibenzoylmethane derivative is stabilized against ultraviolet rays.
- ,β
-
21. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which comprises, in a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative, said dibenzoylmethane derivative being 4-tert-butyl-4'"'"'-methoxydibenzoylmethane, and at least 1% by weight of a α
- -cyano-β
,β
-diphenylacrylate of formula;
##STR6## in which R1 and R'"'"'1 represent a hydrogen atom;R2 represents a 2-ethylhexyl radical; and R3 represents a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
- -cyano-β
-
32. A photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm, which consists essentially of a cosmetically acceptable vehicle containing at least one fatty phase, 1 to 5% by weight of a dibenzoylmethane derivative, said dibenzoylmethane derivative being 4-tert-butyl-4'"'"'-methoxydibenzoylmethane, and at least 1% by weight of a α
- -cyano-β
,β
-diphenylacrylate of formula;
##STR7## in which R1 and R'"'"'1 represents a hydrogen atom;R2 represents a 2-ethylhexyl radical; and R3 represents a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
- -cyano-β
-
33. In a photostable cosmetic screening composition for protection of the human epidermis against ultraviolet rays of wavelengths between 280 and 380 nm which consists essentially of a dibenzoylmethane derivative as a UV-A screen in combination with a UV-B screen in a cosmetically acceptable vehicle containing at least one fatty phase, wherein the improvement comprises increasing the protection of the skin against UV rays of wavelengths between 280 and 380 nm by using 1 to 5% by weight of a dibenzoylmethane derivative, said dibenzoylmethane derivative being 4-tert-butyl-4'"'"'-methoxydibenzoylmethane, and an effective amount of at least 1% by weight of a α
- -cyano-β
,β
-diphenyl-acrylate of formula;
##STR8## in which R1 and R'"'"'1 represent a hydrogen atom;R2 represents a 2-ethylhexyl radical; and R3 represents a --CN radical, the mole ratio of the compound of formula (I) to the dibenzoylmethane derivative being not less than 0.8.
- -cyano-β
Specification