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US3975313A
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Solid amphoteric skin cleanser
Assignee: Individual
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Filing: 1974-06-19
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Granted: 1976-08-17
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Expires: 1994-06-19
Abstract
Abstract A solid amphoteric skin cleanser suited for cleansing human skin is produced by admixing a partially neutralized amphoteric surfactant having at least one basic nitrogen and one or more carboxyl groups within the same molecule and a hexahydric alcohol in the presence of elevated temperatures e.g. 155° C. to 165° C. and agitation until a clear homogeneous composition is formed. The solution is then solidified by cooling.
Inventors
- 👤 Jesse Bedford Shelmire, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:19
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2003; C11D3/2065; C11D1/00; C11D1/88; C11D17/00; C11D17/0047; C11D17/006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
164 words
A process for manufacturing a solid amphoteric skin cleanser comprising: a. heating a mixture of: (1) an amphoteric surfactant compound selected from the group consisting of: ##EQU3## wherein R is an aliphatic hydrocarbon having from about 4 to about 20 carbon atoms; R 1 is an aliphatic hydrocarbon having from about 1 to about 4 carbon atoms; and M is selected from hydrogen, an alkali metal, and a primary, secondary or tertiary amine, said amphoteric surfactant being partially neutralized by reaction with from about 0.3 to about 0.7 molar equivalents of base per mole of said amphoteric surfactant, and (2) a hexahydric alcohol selected from the group consisting of ducitol, mannitol, and sorbitol, the molar ratio between said hexahydric alcohol and said amphoteric surfactant being in the range from about 2:1 to about 2:3; said heating occurring at a temperature of from about 155°C to about 165°C to form a homogeneous liquid compositions; and b. cooling said homogeneous liquid to form a solid composition.
Claim 2
Dependent Claim
164 words
A process for manufacturing a solid amphoteric skin cleanser comprising: a. heating a mixture of: (1) an amphoteric surfactant compound selected from the group consisting of: ##EQU3## wherein R is an aliphatic hydrocarbon having from about 4 to about 20 carbon atoms; R 1 is an aliphatic hydrocarbon having from about 1 to about 4 carbon atoms; and M is selected from hydrogen, an alkali metal, and a primary, secondary or tertiary amine, said amphoteric surfactant being partially neutralized by reaction with from about 0.3 to about 0.7 molar equivalents of base per mole of said amphoteric surfactant, and (2) a hexahydric alcohol selected from the group consisting of ducitol, mannitol, and sorbitol, the molar ratio between said hexahydric alcohol and said amphoteric surfactant being in the range from about 2:1 to about 2:3; said heating occurring at a temperature of from about 155°C to about 165°C to form a homogeneous liquid compositions; and b. cooling said homogeneous liquid to form a solid composition.
Claim 3
Dependent Claim
9 words
The product produced by the process of claim 1.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein said hexahydric alcohol is mannitol and said amphoteric surfactant has said formula I.
Claim 5
Dependent Claim
9 words
The product produced by the process of claim 3.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said hexahydric alcohol is mannitol and said amphoteric surfactant has said formula II.
Claim 7
Dependent Claim
9 words
The product produced by the process of claim 5.
Claim 8
Dependent Claim
25 words
The process of claim 1 wherein said base is selected from a group consisting of alkali metal hydroxides, primary amines, secondary amines and tertiary amines.
Claim 9
Dependent Claim
180 words
A process for producing a solid amphoteric skin cleanser comprising: a. initially forming a mixture of hexahydric alcohol selected from the group consisting of ducitol, mannitol and sorbitol, and an amphoteric surfactant having the formula selected from: ##EQU4## wherein R is an aliphatic hydrocarbon having from about 4 to about 20 carbon atoms; R 1 is an aliphatic hydrocarbon having from about 1 to about 4 carbon atoms; and M is selected from hydrogen, alkali metal or primary, secondary or tertiary amines, in molar ratios of said hexahydric alcohol to said amphoteric surfactant in the range of from about 2:1 to about 2:3 respectively; b. heating said mixture to a temperature in the range of from about 155°C to about 165°C with agitation to form a homogeneous liquid composition; c. admixing with the resulting homogeneous liquid composition from about 0.3 to about 0.7 molar equivalents of a base, based upon said amphoteric surfactant, said base selected from the group consisting of alkali metal hydroxides, primary amines, secondary amines and tertiary amines; and d. cooling said homogeneous liquid to ambient temperatures.
Claim 10
Dependent Claim
180 words
A process for producing a solid amphoteric skin cleanser comprising: a. initially forming a mixture of hexahydric alcohol selected from the group consisting of ducitol, mannitol and sorbitol, and an amphoteric surfactant having the formula selected from: ##EQU4## wherein R is an aliphatic hydrocarbon having from about 4 to about 20 carbon atoms; R 1 is an aliphatic hydrocarbon having from about 1 to about 4 carbon atoms; and M is selected from hydrogen, alkali metal or primary, secondary or tertiary amines, in molar ratios of said hexahydric alcohol to said amphoteric surfactant in the range of from about 2:1 to about 2:3 respectively; b. heating said mixture to a temperature in the range of from about 155°C to about 165°C with agitation to form a homogeneous liquid composition; c. admixing with the resulting homogeneous liquid composition from about 0.3 to about 0.7 molar equivalents of a base, based upon said amphoteric surfactant, said base selected from the group consisting of alkali metal hydroxides, primary amines, secondary amines and tertiary amines; and d. cooling said homogeneous liquid to ambient temperatures.
Claim 11
Dependent Claim
9 words
The product produced by the process of claim 8.
Claim 12
Dependent Claim
19 words
The process of claim 8 wherein said hexahydric alcohol is mannitol and said amphoteric surfactant has said formula I.
Claim 13
Dependent Claim
9 words
The product produced by the process of claim 10.
Claim 14
Dependent Claim
19 words
The process of claim 8 wherein said hexahydric alcohol is mannitol and said amphoteric surfactant has said formula II.
Claim 15
Dependent Claim
9 words
The product produced by the process of claim 12.
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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) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |