Cosmetic compositions containing hydroxyl derivatives of dibenzoylmethane and their use in protecting the skin against ultraviolet rays and derivatives for use therein

Claim 2

A composition for protecting the skin against UV-light radiation in the range of about 280 to 400 nm which comprises, at least one 2-hydroxydibenzoylmethane of the formula: ##STR7## in which R 1 , R 2 , R 3 and R 4 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 to C 4 alkyl group, in a cosmetically acceptable medium, said at least one 2-hydroxydibenzoylmethane being present in an amount of about 0.5 to 10% by weight of said composition, and said composition being in a form selected from the group consisting of a lotion, an emulsion, an aqueous-alcoholic gel, an alcoholic gel, and an aerosol, and containing at least one cosmetic adjuvant selected from the group consisting of thickeners, softeners, superfatting agents, humectants, wetting agents, surface-active agents, preservatives, antifoam agents, perfumes, oils, waxes, dyestuffs and pigments.

Claim 3

A composition according to claim 1, in which the halogen is chlorine, the straight-chain or branched-chain alkyl group is a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl or lauryl group, the alkoxy group is a methoxy, ethoxy or butoxy group and R denotes a hydrogen atom or a methyl or butyl group.

Claim 4

A composition according to claim 1 which contains a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a hydrogen atom.

Claim 5

A composition according to claim 3, which contains a 2-hydroxydibenzoylmethane selected from the group consisting of 2-hydroxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-2'-methoxydibenzoylmethane, 2-hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-2',6'-dimethoxydibenzoylmethane, 2-hydroxydibenzoylmethane and 2-hydroxy-5-lauryl-4'-tert.-butyl-dibenzoylmethane.

Claim 6

A composition according to claim 1 which contains a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a C 1 -C 4 alkyl group.

Claim 7

A composition according to claim 1, which is in the form of an anti-sunburn composition, and which contains a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a hydrogen atom together with a watersoluble or liposoluble sun filter having a filtering action in respect of UV.B rays which is selected from the group consisting of benzylidenecamphor derivatives, coffee bean oil, salicylic acid derivatives, cinnamic acid derivatives, p-aminobenzoic acid derivatives and benzophenone derivatives.

Claim 8

A composition according to claim 1, which is in the form of an anti-sunburn composition and which contains a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a C 1 -C 4 alkyl group and optionally a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a hydrogen atom.

Claim 9

A composition according to claim 1 which is in the form of an emulsion, and wherein said cosmetically acceptable medium contains fatty alcohols, oxyethyleneated fatty alcohols, fatty acid esters, fatty acids, lanolin, natural or synthetic oils and waxes, in the presence of water.

Claim 10

A composition for protecting the skin against UV-light radiation in the range of about 280 to 400 nm which comprises, at least one 2-hydroxydibenzoylmethane of the formula: ##STR8## in which R 1 and R 2 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 to C 4 alkyl group, in a cosmetically acceptable medium, said at least one 2-hydroxydibenzoylmethane being present in an amount of about 0.5 to 10% by weight of said composition, and said composition being in a form selected from the group consisting of a lotion, an emulsion, an aqueous-alcoholic gel, an alcoholic gel, and an aerosol, and containing at least one cosmetic adjuvant selected from the group consisting of thickeners, softeners, superfatting agents, humectants, wetting agents, surface-active agents, preservatives, antifoam agents, perfumes, oils, waxes, dyestuffs and pigments.

Claim 11

A composition for protecting the skin against UV-light radiation in the range of about 280 to 400 nm which comprises, at least one 2-hydroxydibenzoylmethane of the formula: ##STR8## in which R 1 and R 2 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 to C 4 alkyl group, in a cosmetically acceptable medium, said at least one 2-hydroxydibenzoylmethane being present in an amount of about 0.5 to 10% by weight of said composition, and said composition being in a form selected from the group consisting of a lotion, an emulsion, an aqueous-alcoholic gel, an alcoholic gel, and an aerosol, and containing at least one cosmetic adjuvant selected from the group consisting of thickeners, softeners, superfatting agents, humectants, wetting agents, surface-active agents, preservatives, antifoam agents, perfumes, oils, waxes, dyestuffs and pigments.

Claim 12

A composition for protecting the skin against UV-light radiation in the range of about 280 to 400 nm which comprises, at least one 2-hydroxydibenzoylmethane selected from the group consisting of 2-hydroxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-2'-methoxydibenzoylmethane, 2-hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-2',6'-dimethoxydibenzoylmethane, 2-hydroxy-5-lauryl-4'-tert.-butyl-dibenzoylmethane, 2-hydroxy-4-butoxy-4'-tert.-butyldibenzoylbutylmethane and 2-hydroxy-4,4'-dibutyloxydibenzoylbutylmethane, in a cosmetically acceptable medium, said at least one 2-hydroxydibenzoylmethane being present in an amount of about 0.5 to 10% by weight of said composition, and said composition being in a form selected from the group consisting of a lotion, an emulsion, an aqueous-alcoholic gel, an alcoholic gel, and an aerosol, and containing at least one cosmetic adjuvant selected from the group consisting of thickeners, softeners, superfatting agents, humectants, wetting agents, surface-active agents, preservatives, antifoam agents, perfumes, oils, waxes, dyestuffs and pigments.

Claim 13

A composition for protecting the skin against UV-light radiation in the range of about 280 to 400 nm which comprises, at least one 2-hydroxydibenzoylmethane selected from the group consisting of 2-hydroxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-2'-methoxydibenzoylmethane, 2-hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-2',6'-dimethoxydibenzoylmethane, 2-hydroxy-5-lauryl-4'-tert.-butyl-dibenzoylmethane, 2-hydroxy-4-butoxy-4'-tert.-butyldibenzoylbutylmethane and 2-hydroxy-4,4'-dibutyloxydibenzoylbutylmethane, in a cosmetically acceptable medium, said at least one 2-hydroxydibenzoylmethane being present in an amount of about 0.5 to 10% by weight of said composition, and said composition being in a form selected from the group consisting of a lotion, an emulsion, an aqueous-alcoholic gel, an alcoholic gel, and an aerosol, and containing at least one cosmetic adjuvant selected from the group consisting of thickeners, softeners, superfatting agents, humectants, wetting agents, surface-active agents, preservatives, antifoam agents, perfumes, oils, waxes, dyestuffs and pigments.

Claim 14

Process for protecting the human epidermis aganist UV rays in the range of about 280 to 400 nm, which comprises applying thereto an amount of about 0.5 to 10% by weight of a 2-hydroxydibenzoylmethane of the formula: ##STR9## in which R 1 , R 2 , R 3 and R 4 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 to C 4 alkyl group, in a cosmetically acceptable medium.

Claim 15

Process for protecting the human epidermis aganist UV rays in the range of about 280 to 400 nm, which comprises applying thereto an amount of about 0.5 to 10% by weight of a 2-hydroxydibenzoylmethane of the formula: ##STR9## in which R 1 , R 2 , R 3 and R 4 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 to C 4 alkyl group, in a cosmetically acceptable medium.

Claim 16

Process according to claim 11, which comprises applying to the human epidermis a 2-hydroxydibenzoylmethane of formula (I) wherein the halogen is chlorine, the straight-chain or branched-chain alkyl group is a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl or lauryl group, the alkoxy group is a methoxy, ethoxy or butoxy group and R denotes a hydrogen atom or a methyl or butyl group.

Claim 17

Process according to claim 11, wherein R denotes a hydrogen atom.

Claim 18

Process according to claim 11, which contains a 2-hydroxydibenzoylmethane selected from the group consisting of 2-hydroxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-chloro-2'-methoxydibenzoylmethane, 2-hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane, 2-hydroxy-5-methyl-2',6'-dimethoxydibenzoylmethane, and 2-hydroxy-5-lauryl-4'-tert.-butyl-dibenzoylmethane.

Claim 19

Process according to claim 11 which contains a 2-hydroxybidenzoylmethane of formula (I) in which R denotes a hydrogen atom together with a water-soluble or liposoluble sun filter having a filtering action in respect to UV-B rays which is selected from the group consisting of benzylidenecamphor derivatives, coffee bean oil, salicylic acid derivatives, cinnamic acid derivatives, p-aminobenzoic acid derivatives and benzophenone derivatives.

Claim 20

Process according to claim 11 which contains a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a C 1 -C 4 alkyl group and optionally a 2-hydroxydibenzoylmethane of formula (I) in which R denotes a hydrogen atom.

Claim 21

A compound which corresponds to the formula: ##STR10## in which R 1 and R 2 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 -C 4 alkyl group.

Claim 22

A compound which corresponds to the formula: ##STR10## in which R 1 and R 2 independently of one another denote a hydrogen or halogen atom, a straight-chain or branched-chain alkyl group of up to 12 carbon atoms or a C 1 to C 4 alkoxy group and R denotes a hydrogen atom or a C 1 -C 4 alkyl group.

Claim 23

A compound according to claim 17, in which the halogen is chlorine, the straight-chain or branched-chain alkyl group is methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl or lauryl group, the alkoxy group is a methoxy, ethoxy or butoxy group and R denotes a hydrogen atom or a methyl or butyl group.

Claim 24

2-Hydroxy-4'-tert.-butyldibenzoylmethane.

Claim 25

2-Hydroxy-4'-tert.-butyldibenzoylmethane.

Claim 26

2-Hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane.

Claim 27

2-Hydroxy-4-methoxy-4'-tert.-butyldibenzoylmethane.

Claim 28

2-Hydroxy-5-methyl-4'-tert.-butyl-dibenzoylmethane.

Claim 29

2-Hydroxy-5-methyl-4'-tert.-butyl-dibenzoylmethane.

Claim 30

2-Hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane.

Claim 31

2-Hydroxy-5-chloro-4'-tert.-butyldibenzoylmethane.

Claim 32

2-Hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane.

Claim 33

2-Hydroxy-5-tert.-butyl-4'-tert.-butyldibenzoylmethane.

Claim 34

2-Hydroxy-4-butoxy-4'-tert.-butyldibenzoylmethane.

Claim 35

2-Hydroxy-4-butoxy-4'-tert.-butyldibenzoylmethane.

Claim 36

2-Hydroxy-5-lauryl-4'-tert.-butyldibenzoylmethane.

Claim 37

2-Hydroxy-5-lauryl-4'-tert.-butyldibenzoylmethane.