EP0055857A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Potentiation of topical compositions
Assignee: Union Carbide Corp
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Filing: 1981-12-29
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Granted: —
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Expires: 2001-12-29
Abstract
Abstract Topically applied compositions are disclosed. Further, sunscreening compositions are disclosed comprising ultraviolet light-absorbing materials and film-forming polymers which exhibit enhanced protection from erythema-causing radiation. The observed enhancement in activity of the topical composition may be seen to occur with other topically applied materials.
Inventors
- 👤 Pak Sang Leung
- 👤 Errol Desmond Goddard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 06:13
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A01; A01N; A01N25/00; A01N25/24; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/445; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8129; A61K8/817; A61K8/8182; A61K8/84; A61K8/86; A61L; A61L26/00; A61L26/0009; A61L26/0023
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
63 words
A topical composition that forms a dry film when applied to a surface wherein said composition comprises a film-forming polymer in admixture with a topical material wherein the ratio of film-forming polymer to topical material is from about 0.5:1 to about 20:1 such that potentiation of the topical material occurs when said composition is applied to said surface in a dry cast film.
Claim 2
Dependent Claim
63 words
A topical composition that forms a dry film when applied to a surface wherein said composition comprises a film-forming polymer in admixture with a topical material wherein the ratio of film-forming polymer to topical material is from about 0.5:1 to about 20:1 such that potentiation of the topical material occurs when said composition is applied to said surface in a dry cast film.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the ratio of film-forming polymer to topical material is from about 1:1 to about 10:lpreferably from about 1:1 to about 4:1.
Claim 4
Dependent Claim
20 words
A sunscreening composition according to claim 1 or 2 formed by selecting as the topical material an ultraviolet light-absorbing material.
Claim 5
Dependent Claim
25 words
The composition of claim 3 wherein the untraviolet light-absorbing material is present in an amount from about 0.1 to about 5.0 percent by weight. t
Claim 6
Dependent Claim
16 words
The composition of claim 3 or 4 wherein the ultraviolet light-absorbing material is p-amino benzoic acid.
Claim 7
Dependent Claim
21 words
The composition of claim 1 to 5 wherein the film-forming polymer is a water-soluble cellulose derivative or an ethylene oxide resin.
Claim 8
Dependent Claim
122 words
The sunscreening composition of claim 6 wherein the film-forming polymer is a quaternary nitrogen- substituted cellulose having the structure wherein R cell is a residue of an anhydroglucose unit, wherein is an integer having values 50 to 20,000, and wherein each R individually represents a substituent of the general formula: wherein the m is an integer having values from 0 to 10, n is'an integer having values from 0 to 3, p is an integer having values from 0 to 10, and b is an integer having a value from 0 to 3 and the average value of n per anhydroglucose unit is from about 0.1 to about 0.5 and the sum (m + p) is from about .8 to about 2.
Claim 9
Dependent Claim
39 words
A topical composition according to claim lto 6 wherein the film-forming polymer is polyethylene oxide, the topical material is 2-ethyl hexyl para-diethylamino benzoate and the ratic of film-forming polymer to topical material is from about 1:5 to about 4:1.
Claim 10
Dependent Claim
16 words
The composition of claim 1 or 2 wherein the topical material is an insecticide preferably i-naphthyl-N-methylcarbamate.
Claim 11
Dependent Claim
69 words
A process for potentiating topically applied materials in dry cast films comprising adding to said topical material a film-forming polymer in such amount that the ratio as a weight percent of film-forming polymer to topical material is from about 0.5:1 to about 20:1 preferably from about 1:1 to about 10:1, especially from about 1:1 to about 4:1 such that the topical material is potentiated in the dry cast film.
Claim 12
Dependent Claim
69 words
A process for potentiating topically applied materials in dry cast films comprising adding to said topical material a film-forming polymer in such amount that the ratio as a weight percent of film-forming polymer to topical material is from about 0.5:1 to about 20:1 preferably from about 1:1 to about 10:1, especially from about 1:1 to about 4:1 such that the topical material is potentiated in the dry cast film.
Claim 13
Dependent Claim
17 words
The process of claim 10 wherein the topical material is an ultraviolet light-absorbing material or an insecticide.
Claim 14
Dependent Claim
87 words
12 . A process for producing a shift in the absorbance of ultraviolet light of an ultraviolet light-absorbing material in a dry cast film as compared to the absorbance as measured in a solution of said ultraviolet light absorbing material which comprises adding to a solution of said ultraviolet light-absorbing material a film-forming polymer such that the ratio of film-forming polymer to topical material preferably to ultraviolet absorbing material is from about 0.5:1 to 20:1 preferably about 1:1 to about 4:1 prior to casting said dry film.
Claim 15
Dependent Claim
87 words
12 . A process for producing a shift in the absorbance of ultraviolet light of an ultraviolet light-absorbing material in a dry cast film as compared to the absorbance as measured in a solution of said ultraviolet light absorbing material which comprises adding to a solution of said ultraviolet light-absorbing material a film-forming polymer such that the ratio of film-forming polymer to topical material preferably to ultraviolet absorbing material is from about 0.5:1 to 20:1 preferably about 1:1 to about 4:1 prior to casting said dry film.
Claim 16
Dependent Claim
29 words
The process of claim 12 wherein the pH of said solution is adjusted to a pH of from about 4 to about 8 prior to casting said dry film.
Claim 17
Dependent Claim
73 words
In a sunscreening composition comprising a UV-absorbing material and a film-forming polymer the improvement of providing said film-forming polymer in an amount such that the weight ratio of film-forming polymer to UV-absorbing material is from about 1:1 to about 4:1 such that the absorbance of ultraviolet light by a dry cast film of said film-forming polymer and said UV-absorbing material is greater than a dry cast film wherein the film-forming polymer is absent.
Claim 18
Dependent Claim
73 words
In a sunscreening composition comprising a UV-absorbing material and a film-forming polymer the improvement of providing said film-forming polymer in an amount such that the weight ratio of film-forming polymer to UV-absorbing material is from about 1:1 to about 4:1 such that the absorbance of ultraviolet light by a dry cast film of said film-forming polymer and said UV-absorbing material is greater than a dry cast film wherein the film-forming polymer is absent.
References Cited (Backward Citations)
No citation records indexed.
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