US3962151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent type cleaners
Assignee: Lever Brothers Co
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Filing: 1973-08-06
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Granted: 1976-06-08
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Expires: 1993-08-06
Abstract
Abstract Solvent type cleaner with quick breaking emulsion properties for cold cleaning of metal surfaces, concrete structures, brickwork etc. comprising essentially a hydrocarbon solvent and a cationic emulsifier and optionally a nonionic surfactant. The solvent type cleaners are used in cold immersion cleaning and mechanical spray cleaning. Suitable cationic emulsifiers are higher alkyl and alkenyl amines having the general formula: ##EQU1## in which R is an alkyl or alkenyl group containing 8-14 25 carbon atoms; n = 0-5; R 1 is either (CH 2 --CH 2 --O) m H with m = 0-5, or an alkyl or alkenyl group having 8-25 carbon atoms.
Inventors
- 👤 Abraham Dekker
- 👤 Albert Willems
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:04
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/42; C11D1/44; C11D1/66; C11D3/00; C11D3/43
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
149 words
A non-aqueous solvent type cleaner composition with quick breaking emulsion properties for cleaning metal surfaces, concrete structures, brickwork and the like, consisting essentially of 94.0-98.5% by weight of a non-chlorinated hydrocarbon solvent comprising a kerosene distillate with a flash point of at least 55°C, and about 0.2-5.0% by weight of a cationic emulsifier having the formula: ##EQU3## in which R is an alkyl or alkenyl group containing 8-25 carbon atoms; n is a number from 1-5; and R 1 is either (CH 2 --CH 2 --O) m H, m being from 0-5, or an alkyl or alkenyl group containing 8-25 carbon atoms, and 0.5-1.0% by weight of an ethylene oxide condensate nonionic surface-active compound comprising a mixture of a low ethoxylated compound having up to 5 ethylene oxide units and a high ethoxylated compound having from 8-25 ethylene oxide units, in a weight ratio of from 2:1 to 15:1.
Claim 2
Dependent Claim
149 words
A non-aqueous solvent type cleaner composition with quick breaking emulsion properties for cleaning metal surfaces, concrete structures, brickwork and the like, consisting essentially of 94.0-98.5% by weight of a non-chlorinated hydrocarbon solvent comprising a kerosene distillate with a flash point of at least 55°C, and about 0.2-5.0% by weight of a cationic emulsifier having the formula: ##EQU3## in which R is an alkyl or alkenyl group containing 8-25 carbon atoms; n is a number from 1-5; and R 1 is either (CH 2 --CH 2 --O) m H, m being from 0-5, or an alkyl or alkenyl group containing 8-25 carbon atoms, and 0.5-1.0% by weight of an ethylene oxide condensate nonionic surface-active compound comprising a mixture of a low ethoxylated compound having up to 5 ethylene oxide units and a high ethoxylated compound having from 8-25 ethylene oxide units, in a weight ratio of from 2:1 to 15:1.
Claim 3
Dependent Claim
29 words
A cleaner composition as claimed in claim 1, wherein said cationic emulsifier is present in an amount of about 0.2 to about 2.0% by weight of the total composition.
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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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |