US4534959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol gel
Assignee: BASF Corp
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Filing: 1983-08-22
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Granted: 1985-08-13
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Expires: 2003-08-22
Abstract
Abstract A pressurized composition in an aerosol container and adapted to form a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue comprising water, propellant and a polyoxyethylene-polyoxypropylene copolymer. The preferred composition may advantageously include a skin treating agent, and conventional adjuvants.
Inventors
- 👤 Irving R. Schmolka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/042; A61K8/18; A61K8/72; A61K8/90; A61K9/00; A61K9/10; A61K9/12; A61K9/122; A61L; A61L26/00; A61L26/0009; A61L26/0019; A61Q; A61Q19/00; A61Q9/00; A61Q9/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
150 words
A pressurized composition in an aerosol container capable of forming a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue comprising by weight about 45 to 90 percent water, 3 to 50 percent propellant and 7 to 20 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula: Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H].sub.x wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 3250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the total compound and wherein the water/copolymer weight ratio is at least about 4.5:1.
Claim 2
Dependent Claim
150 words
A pressurized composition in an aerosol container capable of forming a spray upon release of pressure therefrom which composition is a liquid inside the container and forms a gel on contact with living tissue comprising by weight about 45 to 90 percent water, 3 to 50 percent propellant and 7 to 20 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula: Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H].sub.x wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 3250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the total compound and wherein the water/copolymer weight ratio is at least about 4.5:1.
Claim 3
Dependent Claim
68 words
The composition of claim 1 wherein Y is a residue of propylene glycol whereby the resulting compounds have the structure HO(C 2 H 4 O) m (C 3 H 6 O) n (C 2 H 4 O) m H wherein n has a value such that the molecular weight of the polyoxypropylene hydrophobe is about 3250 to 4500 and m is the the same as for claim 1.
Claim 4
Dependent Claim
16 words
The composition of claim 2 including about 0.05 to 5.0 percent by weight skin treatment agent.
Claim 5
Dependent Claim
17 words
The composition of claim 3 including about 1.0 to 20 percent of at least one additional adjuvant.
Claim 6
Dependent Claim
147 words
A pressurized composition in an aerosol container capable of forming a spray upon release of pressure therefrom, which composition is a liquid inside the container and forms a gel on contact with living tissue, comprising by weight about 35 to 90 percent water, 3 to 50 percent of a propellant which is a solvent for said composition and 7 to 25 percent of a polyoxyethylene-polyoxypropylene copolymer of the formaula: Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H] wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 2250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound.
Claim 7
Dependent Claim
147 words
A pressurized composition in an aerosol container capable of forming a spray upon release of pressure therefrom, which composition is a liquid inside the container and forms a gel on contact with living tissue, comprising by weight about 35 to 90 percent water, 3 to 50 percent of a propellant which is a solvent for said composition and 7 to 25 percent of a polyoxyethylene-polyoxypropylene copolymer of the formaula: Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H] wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 2250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound.
Claim 8
Dependent Claim
66 words
The composition of claim 5 wherein Y is a propylene glycol whereby the resulting compounds have the structure HO(C 2 H 4 O) m (C 3 H 6 O) n (C 2 H 4 O) m H wherein n has a value such that the molecular weight of the polyoxypropylene hydrophobe is about 2250 to 4500 and m is the the same as for claim 1.
Claim 9
Dependent Claim
16 words
The composition of claim 6 including about 0.05 to 5.0 percent by weight skin treatment agent.
Claim 10
Dependent Claim
17 words
The composition of claim 7 including about 1.0 to 20.0 percent of at least one additional adjuvant.
Claim 11
Dependent Claim
144 words
A process for treating living skin comprising spraying a gel composition in liquid form onto living skin, whereby a gel is formed on contact therewith, said composition comprising by weight about 45 to 90 percent water, about 3.0 to 50 percent propellant and about 7 to 20 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H].sub.x wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 3250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound and wherein the water/copolymer weight ratio is at least about 4.5:1.
Claim 12
Dependent Claim
144 words
A process for treating living skin comprising spraying a gel composition in liquid form onto living skin, whereby a gel is formed on contact therewith, said composition comprising by weight about 45 to 90 percent water, about 3.0 to 50 percent propellant and about 7 to 20 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H].sub.x wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 3250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound and wherein the water/copolymer weight ratio is at least about 4.5:1.
Claim 13
Dependent Claim
142 words
A process for treating living skin comprising spraying a gel composition in liquid form onto living skin, whereby a gel is formed on contact therewith, said composition comprising by weight about 35 to 90 percent water, about 3.0 to 50 percent of a propellant which is a solvent for said composition and about 7 to 25 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H] wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 2250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound.
Claim 14
Dependent Claim
142 words
A process for treating living skin comprising spraying a gel composition in liquid form onto living skin, whereby a gel is formed on contact therewith, said composition comprising by weight about 35 to 90 percent water, about 3.0 to 50 percent of a propellant which is a solvent for said composition and about 7 to 25 percent of a polyoxyethylene-polyoxypropylene copolymer of the formula Y[(C.sub.3 H.sub.6 O).sub.n (C.sub.2 H.sub.4 O).sub.m H] wherein Y is the residue of a water-soluble organic compound containing therein x active hydrogen atoms; n is an integer; x is an integer greater than 1; the value of n and x are such that the molecular weight of the oxypropylene groups is from about 2250 to 7500; and the value of m is such that the oxyethylene groups constitute about 45 to 90 percent by weight of the compound.
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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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |