US3928261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water removable film-forming compositions for topical application to skin
Assignee: 3M Co
•
Filing: 1973-05-17
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Granted: 1975-12-23
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Expires: 1993-05-17
Abstract
Abstract Compositions for topical application to skin and films made therefrom, said films being flexible, continuous, substantially non-cracking, and water removable in two minutes or less. The compositions comprise an aqueous emulsion of a water insoluble film-forming polymer having a minimum film-forming temperature of less than 37*C. and 2.0 to 50 percent by weight water soluble film-forming polymer, and can be used as vehicles for medicaments or therapeutic agents, as protective barrier films and as cosmetic bases.
Inventors
- 👤 Paul Hubert Schertler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:03
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/70; A61K9/7015; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/368; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8105; A61K8/8117; A61K8/8123; A61K8/8141; A61K8/8152; A61Q; A61Q17/00; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
SYNTHETIC FIBERS HAVING SUPERIOR FIRE RETARDANCY, LIGHT RESISTANCE AND TENACITY, SAID FIBERS CONSISTING OF A POLYVINYL ALCOHOL HAVING AN AVERAGE DEGREE OF POLYMERIZATION OF 500 TO 3000 AND A DEGREE OF SAPONIFICATION OF AT LEAST 99.5 MOL PERCENT, POLYVINYL CHLORIDE AND BORIC ACID, THE WEIGHT RATIO OF POLYVINYL ALCOHOL TO POLYVINYL CHLORIDE BEING 90:10 TO 55:45THE CONTENT OF BORIC ACID BEING 0.02 TO 0.5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE POLYVINYL ALCOHOL, SAID FIBERS BEING MOLECULARLY ORIENTED IN THE DIRECTION OF THE FIBER AXIS AND HAVING HOT WATER RESISTANCE OF AT LEAST 110*C. EVEN WHEN NOT ACETALIZED.
Claim 2
Dependent Claim
100 words
SYNTHETIC FIBERS HAVING SUPERIOR FIRE RETARDANCY, LIGHT RESISTANCE AND TENACITY, SAID FIBERS CONSISTING OF A POLYVINYL ALCOHOL HAVING AN AVERAGE DEGREE OF POLYMERIZATION OF 500 TO 3000 AND A DEGREE OF SAPONIFICATION OF AT LEAST 99.5 MOL PERCENT, POLYVINYL CHLORIDE AND BORIC ACID, THE WEIGHT RATIO OF POLYVINYL ALCOHOL TO POLYVINYL CHLORIDE BEING 90:10 TO 55:45THE CONTENT OF BORIC ACID BEING 0.02 TO 0.5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF THE POLYVINYL ALCOHOL, SAID FIBERS BEING MOLECULARLY ORIENTED IN THE DIRECTION OF THE FIBER AXIS AND HAVING HOT WATER RESISTANCE OF AT LEAST 110*C. EVEN WHEN NOT ACETALIZED.
Claim 3
Dependent Claim
106 words
A composition for topical application to skin capable of forming a continuous film on the skin, which film is adherent to the skin, flexible, substantially non-tacky, substantially non-cracking, and water-removable in two minutes or less; said composition being compatible with medicaments and comprising an aqueous emulsion of water insoluble film-forming polymer having a minimum film-forming temperature of less than 37*C., and 2.0 to 50 percent by weight water soluble film-forming polymer, said percentage of water soluble polymer being based on the dry weight of said water soluble polymer relative to the dry weight of the total of said water soluble polymer and said water insoluble polymer.
Claim 4
Dependent Claim
106 words
A composition for topical application to skin capable of forming a continuous film on the skin, which film is adherent to the skin, flexible, substantially non-tacky, substantially non-cracking, and water-removable in two minutes or less; said composition being compatible with medicaments and comprising an aqueous emulsion of water insoluble film-forming polymer having a minimum film-forming temperature of less than 37*C., and 2.0 to 50 percent by weight water soluble film-forming polymer, said percentage of water soluble polymer being based on the dry weight of said water soluble polymer relative to the dry weight of the total of said water soluble polymer and said water insoluble polymer.
Claim 5
Dependent Claim
11 words
The composition of claim 1 in which is included a pigment.
References Cited (Backward Citations)
US3063873A
Cited
US3100180A
Cited
US3339546A
Cited
US3477864A
Cited
US3485915A
Cited
US3793272A
Cited
US3755560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |