US3895104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sunscreening method and composition containing film forming polyamide material
Assignee: Avon Products Inc
•
Filing: 1972-06-13
•
Granted: 1975-07-15
•
Expires: 1992-06-13
Abstract
Abstract Sunscreening compositions and methods of using the same to protect human skin from erythema-causing radiation by applying to the skin compositions containing a cosmetic carrier, at least one ultraviolet absorbing material which has a maximum absorption peak between 280 millimicrons to about 320 millimicrons and a polyamide resinous material which is capable of forming a film and is alcohol-soluble. Sunscreening compositions containing the polyamide resinous materials, when applied to the skin, form a long lasting protective film which resists removal by water and perspiration.
Inventors
- 👤 Gerhart Karg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:13
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K8/18; A61K8/72; A61K8/84; A61K8/88; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A method of protecting human skin from erythema-causing radiation comprising applying to the skin a sunscreening composition containing from about 0.1 to about 10 percent of the composition of at least one ultraviolet absorbing material having a maximum absorption peak between about 280 millimicrons and 320 millimicrons and from about 0.1 to about 50 percent of the composition of a water-insoluble, alcohol-soluble, film-forming polyamide material, said materials being incorporated in from about 40 percent to 99.8 percent of the composition of a cosmetic carrier material selected from the group consisting of C1-C5 alcohol, C1-C5 alcohol mixtures and C1-C5 alcohol-water mixtures, said maximum amount of water present in the alcohol-water mixture being dependent upon the compatibility of the polyamide used; and allowing said composition to form a film on the skin.
Claim 2
Independent Claim
130 words
A method of protecting human skin from erythema-causing radiation comprising applying to the skin a sunscreening composition containing from about 0.1 to about 10 percent of the composition of at least one ultraviolet absorbing material having a maximum absorption peak between about 280 millimicrons and 320 millimicrons and from about 0.1 to about 50 percent of the composition of a water-insoluble, alcohol-soluble, film-forming polyamide material, said materials being incorporated in from about 40 percent to 99.8 percent of the composition of a cosmetic carrier material selected from the group consisting of C1-C5 alcohol, C1-C5 alcohol mixtures and C1-C5 alcohol-water mixtures, said maximum amount of water present in the alcohol-water mixture being dependent upon the compatibility of the polyamide used; and allowing said composition to form a film on the skin.
Claim 3
Dependent Claim
26 words
The method of protecting human skin from erythema-causing radiation according to claim 1 wherein the polyamide material is a water insoluble, alcohol soluble, film forming polyacrylamide.
Claim 4
Dependent Claim
37 words
The method of protecting human skin from erythema-causing radiation according to claim 1 wherein the polyamide material is a water-insoluble, alcohol soluble, film forming condensation product of at least one polycarboxylic acid and at least one polyamine.
Claim 5
Dependent Claim
37 words
The method of protecting human skin from erythema-causing radiation according to claim 1 wherein the cosmetic carrier is a fugitive C1-C5 alcohol-aqueous mixture having the alcoholic content of said mixture in amounts of at least 50 percent.
Claim 6
Dependent Claim
119 words
A SUBSTANTIVE COMPOSITION FOR PROTECTING SKIN FROM ERYTHEMA-CAUSING RADIATION COMPRISING FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF AN ULTRAVIOLET ABSORBING MATERIAL HAVING A MAXIUM ABSORPTION PEAK BETWEEN ABOUT 280 MILIMICRONS AND 320 MILIMICRONS AND FROM 0.1 TO 50 PERCENT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION OF A POLYAMIDE RESINOUS MATERIAL WHICH IS WATER-INSOLUBLE, ALCOHOL SOLUBLE AND CAPABLE OF FORMING A SUBSTANTIVE FILM MATERIAL, SAID MATERIALS BEING INCORPORATED IN FROM ABOUT 40 TO 99.8 PERCENT BY WEIGHT OF A COSMETIC CARRIER SELECTED FROM THE GROUP CONSISTING OF C1-C5 ALCOHOL, C1-C5 ALCOHOL MIXTURES AND C1-C5 ALCOHOLWATER MIXTURES, SAID MAXIMUM AMOUNT OF WATER PRESENT IN THE ALCOHOL-WATER MIXTURES BEING DEPENDENT UPON THE COMPATIBILITY OF THE POLYAMIDE USED.
Claim 7
Dependent Claim
119 words
A SUBSTANTIVE COMPOSITION FOR PROTECTING SKIN FROM ERYTHEMA-CAUSING RADIATION COMPRISING FROM ABOUT 0.1 TO ABOUT 10 PERCENT BY WEIGHT OF AN ULTRAVIOLET ABSORBING MATERIAL HAVING A MAXIUM ABSORPTION PEAK BETWEEN ABOUT 280 MILIMICRONS AND 320 MILIMICRONS AND FROM 0.1 TO 50 PERCENT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION OF A POLYAMIDE RESINOUS MATERIAL WHICH IS WATER-INSOLUBLE, ALCOHOL SOLUBLE AND CAPABLE OF FORMING A SUBSTANTIVE FILM MATERIAL, SAID MATERIALS BEING INCORPORATED IN FROM ABOUT 40 TO 99.8 PERCENT BY WEIGHT OF A COSMETIC CARRIER SELECTED FROM THE GROUP CONSISTING OF C1-C5 ALCOHOL, C1-C5 ALCOHOL MIXTURES AND C1-C5 ALCOHOLWATER MIXTURES, SAID MAXIMUM AMOUNT OF WATER PRESENT IN THE ALCOHOL-WATER MIXTURES BEING DEPENDENT UPON THE COMPATIBILITY OF THE POLYAMIDE USED.
Claim 8
Dependent Claim
27 words
The substantive composition according to claim 5 wherein the polyamide resinous material is a condensation product of at least one polycarboxylic acid and at least one polyamine.
Claim 9
Dependent Claim
15 words
The substantive composition according to claim 5 wherein the polyamide resinous material is a polyacrylamide.
Claim 10
Dependent Claim
30 words
A substantive composition according to claim 5 wherein the cosmetic carrier is a C1-C5 alcohol-water mixture having an alcohol content of said mixture in amounts of at least 50 percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |