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US4141748A
Expired / Lapsed
US
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Aerosol starch composition
Assignee: Kao Corp
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Filing: 1977-07-26
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Granted: 1979-02-27
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Expires: 1997-07-26
Abstract
Abstract An aerosol starch composition consists essentially of 5 to 30 wt % of a propellant and 70 to 95 wt % of a liquid composition consisting essentially of 2 to 10 wt % of a modified starch, 0.1 to 2 wt % of a poorly water-soluble polyalkylene glycol or derivative thereof and the balance is water.
Inventors
- 👤 Kinjiro Matsunaga
- 👤 Yukiko Sone
- 👤 Yunosuke Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; C; C08; C08L; C08L3/00; C08L3/04; C08L3/08; C09; C09K; C09K3/00; C09K3/30; D06M23/00; D06M23/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
269 words
In a pressurized container having a discharge valve and charged with a self-propelling composition which can be dispensed in an aerosol mist form when said discharge valve is opened, the improvement which comprises: said composition consists essentially of (A) 5 to 30 wt % of a liquified normally gaseous propellant effective for discharging an aerosol of the composition when said discharge valve is opened and (B) 70 to 95 wt % of a liquid composition consisting essentially of (i) 2 to 10 wt %, based on the weight of (B), of a modified starch selected from the group consisting of hydroxyalkylated starch containing hydroxyalkyl groups having 2 to 4 carbon atoms and carboxyalkylated starch containing carboxyalkyl groups having 2 to 4 carbon atoms, wherein said modified starch has the property that a 5% aqueous solution of said modified starch has a viscosity of 5 to 30 cp, at 20° C., (ii) 0.1 to 2 wt %, based on the weight of (B), of a material selected from the group consisting of polypropylene glycol having a molecular weight of 1,000 to 20,000, polybutylene glycol having a molecular weight of 500 to 10,000, an adduct of propylene oxide to a polyhydric alcohol having from 2 to 6 carbon atoms wherein said propylene oxide adduct has a molecular weight of 1,500 to 10,000 and an adduct of butylene oxide to a polyhydric alcohol having 2 to 6 carbon atoms wherein said butylene oxide adduct has a molecular weight of 1,500 to 10,000, said material having a water solubility of not more than 2%, at 25° C., and (iii) the balance is water.
Claim 2
Dependent Claim
269 words
In a pressurized container having a discharge valve and charged with a self-propelling composition which can be dispensed in an aerosol mist form when said discharge valve is opened, the improvement which comprises: said composition consists essentially of (A) 5 to 30 wt % of a liquified normally gaseous propellant effective for discharging an aerosol of the composition when said discharge valve is opened and (B) 70 to 95 wt % of a liquid composition consisting essentially of (i) 2 to 10 wt %, based on the weight of (B), of a modified starch selected from the group consisting of hydroxyalkylated starch containing hydroxyalkyl groups having 2 to 4 carbon atoms and carboxyalkylated starch containing carboxyalkyl groups having 2 to 4 carbon atoms, wherein said modified starch has the property that a 5% aqueous solution of said modified starch has a viscosity of 5 to 30 cp, at 20° C., (ii) 0.1 to 2 wt %, based on the weight of (B), of a material selected from the group consisting of polypropylene glycol having a molecular weight of 1,000 to 20,000, polybutylene glycol having a molecular weight of 500 to 10,000, an adduct of propylene oxide to a polyhydric alcohol having from 2 to 6 carbon atoms wherein said propylene oxide adduct has a molecular weight of 1,500 to 10,000 and an adduct of butylene oxide to a polyhydric alcohol having 2 to 6 carbon atoms wherein said butylene oxide adduct has a molecular weight of 1,500 to 10,000, said material having a water solubility of not more than 2%, at 25° C., and (iii) the balance is water.
Claim 3
Dependent Claim
28 words
An aerosol starch composition as claimed in claim 1, in which said modified starch is a hydroxyalkylated starch containing a hydroxyalkyl group having 2 or 3 carbon atoms.
Claim 4
Dependent Claim
23 words
An aerosol starch composition as claimed in claim 1, in which the amount of said material is from 0.2 to 1 wt %.
Claim 5
Dependent Claim
25 words
An aerosol starch composition as claimed in claim 1, in which the water solubility of said material is not more than 0.1%, at 25° C.
Claim 6
Dependent Claim
24 words
An aerosol starch composition as claimed in claim 1, in which said material is polypropylene glycol having a molecular weight of 1,000 to 20,000.
Claim 7
Dependent Claim
26 words
An aerosol starch composition as claimed in claim 1, in which said material is a glycerin-propylene oxide adduct having a molecular weight of 1,500 to 10,000.
Claim 8
Dependent Claim
15 words
An aerosol starch composition as claimed in claim 1, in which said propellant is LPG.
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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |