US3864473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substantive polymeric sunscreen composition
Assignee: Avon Products Inc
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Filing: 1972-06-12
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Granted: 1975-02-04
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Expires: 1992-06-12
Abstract
Abstract Sunscreening compositions for topical application to the skin comprising a cosmetic carrier material containing a polymeric reaction product of a para-dialkylamino benzoyl halide and a polyethylenimine. These sunscreening compositions, when applied to the skin of the user, form a film of the polymeric reaction product which is highly effective in protecting human skin from erythema-inducing ultraviolet radiation and is resistant to removal from the skin by water or perspiration.
Inventors
- 👤 Joseph P Ciaudelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:13
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K2800/00; A61K2800/40; A61K2800/57
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A METHOD OF PROTECTING THE HUMAN SKIN FROM ERYTHEMA INDUCING ULTRAVOILET RADIATION WHICH COMPRISES APPLYING TO THE SKIN A COMPOSITION CONTAINING FROM 1 PERCENT TO ABOUT 75 PERCENT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION OF A POLYMERIC REACTION PRODUCT OF AT LEAST ONE PI-DI-C1-C4ALKYLAMINOBENZOYL HALIDE WITH POLYETHYLENIMINE HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 500 TO 100,000 IN A TOPICAL SKIN COSMETIC CARRIER MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER-LOWER ALCOHOL MIXTURE, AND AN AMINAL, VEGETABLE AND MINERAL OIL BASE.
Claim 2
Independent Claim
84 words
A METHOD OF PROTECTING THE HUMAN SKIN FROM ERYTHEMA INDUCING ULTRAVOILET RADIATION WHICH COMPRISES APPLYING TO THE SKIN A COMPOSITION CONTAINING FROM 1 PERCENT TO ABOUT 75 PERCENT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION OF A POLYMERIC REACTION PRODUCT OF AT LEAST ONE PI-DI-C1-C4ALKYLAMINOBENZOYL HALIDE WITH POLYETHYLENIMINE HAVING AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 500 TO 100,000 IN A TOPICAL SKIN COSMETIC CARRIER MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER-LOWER ALCOHOL MIXTURE, AND AN AMINAL, VEGETABLE AND MINERAL OIL BASE.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the p-dialkylaminobenzoyl halide is p-dimethylaminobenzoyl chloride.
Claim 4
Dependent Claim
13 words
A method according to claim 1 wherein the carrier material is a lotion.
Claim 5
Dependent Claim
34 words
A method according to claim 1 wherein the polymeric reaction product contains from 5 to 80 weight percent based on the total weight of the polymeric material of the residue group of p-dialkylaminobenzoyl halide.
Claim 6
Dependent Claim
24 words
A method according to claim 1 wherein the carrier material is a water-lower alkyl alcohol mixture having up to 75 percent by weight alcohol.
Claim 7
Dependent Claim
64 words
A substantive polymeric sunscreening composition comprising a polymeric reaction product of a polyethylenimine and a di-C1-C4-alkylaminobenzoyl halide having an average molecular weight of from about 500 to 100,000, wherein said product contains the dialkylaminobeNzoyl groups pendant to the polymeric backbone and a topical skin cosmetic carrier material selected from the group consisting of water-lower alcohol mixture, and an animal, vegetable or mineral oil base.
Claim 8
Dependent Claim
64 words
A substantive polymeric sunscreening composition comprising a polymeric reaction product of a polyethylenimine and a di-C1-C4-alkylaminobenzoyl halide having an average molecular weight of from about 500 to 100,000, wherein said product contains the dialkylaminobeNzoyl groups pendant to the polymeric backbone and a topical skin cosmetic carrier material selected from the group consisting of water-lower alcohol mixture, and an animal, vegetable or mineral oil base.
Claim 9
Dependent Claim
31 words
A composition of claim 6 wherein the pendant dialkylaminobenzoyl groups are in a concentration ranging from about 0.1 percent to about 10.0 percent based on the total weight of the composition.
Claim 10
Dependent Claim
12 words
A composition of claim 6 wherein the dialkylaminobenzoyl halide is dimethylaminobenzoyl chloride.
Claim 11
Dependent Claim
24 words
A composition according to claim 6 wherein the cosmetic carrier is a water-lower alkyl alcohol mixture having up to 75 percent by weight alcohol.
References Cited (Backward Citations)
US2887116A
Cited
US3238138A
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US3529055A
Cited
US3642572A
Cited
US3622545A
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US3600350A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |