EP0166221A2
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EP
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Sunscreen composition and method of use
Assignee: Henkel Corp
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Filing: 1985-05-24
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Granted: —
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Expires: 2005-05-24
Abstract
Abstract There is disclosed the preparation of the ester of a tocopherol and certain acids possessing an unsaturated bond in conjugation with the carbonyl group and the use thereof in sunscreen composition. The use of these esters, particularly the p-aminobenzoate of d-a-tocopherol, provide a method of reducing the amount of ultraviolet radiation reaching the skin. The esters may be applied to the skin using a carrier which may also contain other skin treating compositions. The preparation may be prepared in the form of solutions, oils, suspensions, gels, emulsions, ointments, pastes or sticks.
Inventors
- 👤 Francis W. Tuominen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 11:30
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/67; A61K8/678; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
40 words
A sunscreen composition comprising a carrier and tocopherol ester of an acid possessing an unsaturated bond in conjugation with the carbonyl group, said ester being present in an effective amount to reduce the amount of ultraviolet radiation reaching the skin.
Claim 2
Dependent Claim
40 words
A sunscreen composition comprising a carrier and tocopherol ester of an acid possessing an unsaturated bond in conjugation with the carbonyl group, said ester being present in an effective amount to reduce the amount of ultraviolet radiation reaching the skin.
Claim 3
Dependent Claim
35 words
A sunscreen composition as defined in claim 1 wherein said tocopherol is α-tocopherol or a mixture thereof with beta, gamma and delta tocopherol and said α-tocopherol is d-α-tocopherol or a mixture of d and ℓ-α-tocopherol.
Claim 4
Dependent Claim
37 words
A composition as defined in claims 1 and 2 in which said acid has the formula where A is an alkyl, cycloalkyl, aryl, alkaryl or aralkyl group containing a double bond in conjugation with the carbonyl carbon.
Claim 5
Dependent Claim
54 words
A composition as defined in claim 3 wherein A has the formula where R is an alkenyl group containing from 1-20 carbon atoms, n is an integer of 0 or 1, B is a substituent which will not interfere with esterification of tocopherol, and m is an integer of 0, 1, 2 or 3.
Claim 6
Dependent Claim
41 words
A composition as defined in claim 4 wherein B is selected from an alkyl group, amino group, hydroxyl group,alkoxyl group, -NH 2 , -NHCH 3 , -N(CH 3 ) 2 , - OH, -OCH 3 and -OC 2 H 5 .
Claim 7
Dependent Claim
19 words
A composition as defined in claim 1 wherein said acid is a benzoic acid other than acetyl salicylic acid.
Claim 8
Dependent Claim
30 words
A composition as defined in claims 1 to 6 wherein said tocopherol ester is tocopherol p-aminobenzoate, preferably employed in an amount of about 1-20% by weight of said sunscreen composition.
Claim 9
Dependent Claim
53 words
A composition as defined in claims 1 to 7 wherein said carrier is employed in an amount of greater than 50% by weight of said sunscreen composition, and wherein said carrier is selected from mineral oil, silicone oil, liquid unsaturated alcohols, liquid wax esters, branched chain fatty alcohol, triglyceride oils and mixtures thereof.
Claim 10
Dependent Claim
13 words
A lotion containing the sunscreen composition as defined in claims 1 to 8.
Claim 11
Dependent Claim
11 words
A microemulsion containing the sunscreen composition of claims 1 to 8.
Claim 12
Dependent Claim
12 words
A cosmetic stick containing the sunscreen composition of claims 1 to 8.
Claim 13
Dependent Claim
13 words
A compound selected from a d-α-tocopheryl benzoate ester, d-α-tocopheryl p-aminobenzoate and d-α-tocopheryl p-nitrobenzoate.
Claim 14
Dependent Claim
13 words
A compound selected from a d-α-tocopheryl benzoate ester, d-α-tocopheryl p-aminobenzoate and d-α-tocopheryl p-nitrobenzoate.
References Cited (Backward Citations)
No citation records indexed.
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