US4290904A
Expired / Lapsed
US
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Transparent soap
Assignee: Neutrogena LLC
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Filing: 1980-12-01
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Granted: 1981-09-22
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Expires: 2000-12-01
Abstract
Abstract A transparent low alkalinity bar soap based on a tetrakis (hydroxyalkyl) ethylene diamine having the formula ##STR1## wherein R is hydrogen or an alkyl group having one to four carbon atoms and n is one to four. The soap is prepared by adding the tetrakis (hydroxyalkyl) ethylene diamine to a mixture of caustic soda, saponifiable fatty oil, water and a polyhydric alcohol, either before or after saponification, followed by addition of one or more superfatting agents as well as other ingredients designed to affect the properties of the bar for humectant, surfactant and perfuming purposes.
Inventors
- 👤 Maxwell H. Poper
- 👤 Eric Jungermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0095; C11D9/00; C11D9/04; C11D9/22; C11D9/30
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
74 words
A transparent, low alkalinity soap composition in solid form, comprising: about 10-30 weight percent of a sodium soap prepared by saponification of fatty oils; about 5-20 weight percent of a tetrakis (hydroxyalkyl) ethylene diamine having the formula ##STR4## wherein R is hydrogen or an alkyl group having one to four carbon atoms and n is one to four; a polyhydric alcohol in an amount sufficient to assure transparency; and a fatty acid superfatting agent.
Claim 2
Dependent Claim
74 words
A transparent, low alkalinity soap composition in solid form, comprising: about 10-30 weight percent of a sodium soap prepared by saponification of fatty oils; about 5-20 weight percent of a tetrakis (hydroxyalkyl) ethylene diamine having the formula ##STR4## wherein R is hydrogen or an alkyl group having one to four carbon atoms and n is one to four; a polyhydric alcohol in an amount sufficient to assure transparency; and a fatty acid superfatting agent.
Claim 3
Dependent Claim
13 words
The composition of claim 1 in which said superfatting agent comprises stearic acid.
Claim 4
Dependent Claim
17 words
The composition of claim 2 in which a minor portion of said superfatting agent comprises oleic acid.
Claim 5
Dependent Claim
20 words
The composition of claim 1 in which said fatty oil is a mixture of tallow, coconut oil and castor oil.
Claim 6
Dependent Claim
34 words
The composition of claim 4 in which said castor oil constitutes about 10-30 weight percent of said fatty oil mixture and the weight ratio of tallow to coconut oil is about 50:50 to 85:15.
Claim 7
Dependent Claim
8 words
The composition of claim 1 including added water.
Claim 8
Dependent Claim
11 words
The composition of claim 1 including an anionic or amphoteric surfactant.
Claim 9
Dependent Claim
13 words
The composition of claim 7 in which said surfactant is lauric dimenthylamine oxide.
Claim 10
Dependent Claim
16 words
The composition of any one of claims 1-8 in which said polyhydric alcohol comprises propylene glycol.
Claim 11
Dependent Claim
15 words
The composition of any one of claims 1-7 in which said diamine is N,N,N',N'-tetrakis (2-hydroxypropyl)-ethylenediamine.
Claim 12
Dependent Claim
13 words
The composition of claim 10 in which said polyhydric alcohol is propylene glycol.
Claim 13
Dependent Claim
104 words
A transparent soap composition in solid form comprising: about 10-30 weight percent of a sodium soap prepared by saponification of a mixture of tallow, coconut oil and castor oil, said castor oil comprising about 10 to about 30 weight percent of said misture, the weight ratio of tallow to coconut oil being about 50:50 to about 85:15; about 5-20 weight percent of N,N,N',N'-tetrakis (2-hydroxypropyl)-ethylenediamine; about 10-40 weight percent of propylene glycol as solvent for said diamine; about 6-16 weight percent of superfatting agent comprising stearic acid; about 5-10 weight percent of an anionic or amphoteric surfactant; and about 6-15 weight percent of added water.
Claim 14
Dependent Claim
104 words
A transparent soap composition in solid form comprising: about 10-30 weight percent of a sodium soap prepared by saponification of a mixture of tallow, coconut oil and castor oil, said castor oil comprising about 10 to about 30 weight percent of said misture, the weight ratio of tallow to coconut oil being about 50:50 to about 85:15; about 5-20 weight percent of N,N,N',N'-tetrakis (2-hydroxypropyl)-ethylenediamine; about 10-40 weight percent of propylene glycol as solvent for said diamine; about 6-16 weight percent of superfatting agent comprising stearic acid; about 5-10 weight percent of an anionic or amphoteric surfactant; and about 6-15 weight percent of added water.
Claim 15
Dependent Claim
29 words
The composition of claim 12 in which said superfatting agent is present in a range of about 12-14 weight percent and comprises up to 4 percent of oleic acid.
Claim 16
Dependent Claim
16 words
The composition of claim 12 or 13 including a small amount of glycerin as a humectant.
Claim 17
Independent Claim
89 words
A method for the preparation of a transparent soap composition in solid form, comprising: bringing together sodium hydroxide solution, saponifiable fatty oil to react with said sodium hydroxide to form a sodium soap constituting about 10-30 weight percent of the transparent soap composition, a tetrakis (hydroxyalkyl) ethylene diamine constituting about 5-20 weight percent of the transparent soap composition, a polyhydric alcohol in an amount sufficient to assure transparency and water; saponifying said fatty oil with said sodium hydroxide; and adding to said saponified mixture a fatty and superfatting agent.
Claim 18
Independent Claim
89 words
A method for the preparation of a transparent soap composition in solid form, comprising: bringing together sodium hydroxide solution, saponifiable fatty oil to react with said sodium hydroxide to form a sodium soap constituting about 10-30 weight percent of the transparent soap composition, a tetrakis (hydroxyalkyl) ethylene diamine constituting about 5-20 weight percent of the transparent soap composition, a polyhydric alcohol in an amount sufficient to assure transparency and water; saponifying said fatty oil with said sodium hydroxide; and adding to said saponified mixture a fatty and superfatting agent.
Claim 19
Dependent Claim
13 words
The method of claim 15 in which said superfatting agent comprises stearic acid.
Claim 20
Dependent Claim
17 words
The method of claim 16 in which a minor portion of said superfatting agent comprises oleic acid.
Claim 21
Dependent Claim
25 words
The method of claim 15 in which said superfatting agent is selected from one or more fatty acids derived from tallow oil or coconut oil.
Claim 22
Dependent Claim
20 words
The method of claim 15 in which said fatty oil is a mixture of tallow, coconut oil and castor oil.
Claim 23
Dependent Claim
34 words
The method of claim 19 in which said castor oil constitutes about 10-30 weight percent of said fatty oil mixture and the weight ratio of tallow to coconut oil is about 50:50 to 85:15.
Claim 24
Dependent Claim
19 words
The method of claim 15 in which water is added to said saponification mixture prior to said saponification step.
Claim 25
Independent Claim
16 words
The method of any one of claims 15-21 in which said polyhydric alcohol comprises propylene glycol.
Claim 26
Independent Claim
15 words
The method of any one of claims 15-21 in which said diamine is N,N,N',N'-tetrakis (2-hydroxypropyl)-ethylene-diamine.
Claim 27
Dependent Claim
13 words
The method of claim 23 in which said polyhydric alcohol is propylene glycol.
Claim 28
Independent Claim
92 words
A method for the preparation of a transparent soap composition in solid form, comprising: mixing together sodium hydroxide, saponifiable fatty oil to react with said sodium hydroxide to form a sodium soap constituting about 10-30 weight percent of the transparent soap composition, polyhydric alcohol in an amount sufficient to assure transparency, and water; saponifying said fatty oil with said sodium hydroxide; thereafter adding to said mixture a tetrakis (hydroxyalkyl) ethylene diamine constituting about 10-30 weight percent of the transparent soap composition; and adding to said saponified mixture a fatty acid superfatting agent.
Claim 29
Independent Claim
92 words
A method for the preparation of a transparent soap composition in solid form, comprising: mixing together sodium hydroxide, saponifiable fatty oil to react with said sodium hydroxide to form a sodium soap constituting about 10-30 weight percent of the transparent soap composition, polyhydric alcohol in an amount sufficient to assure transparency, and water; saponifying said fatty oil with said sodium hydroxide; thereafter adding to said mixture a tetrakis (hydroxyalkyl) ethylene diamine constituting about 10-30 weight percent of the transparent soap composition; and adding to said saponified mixture a fatty acid superfatting agent.
Claim 30
Dependent Claim
13 words
The method of claim 25 in which said superfatting agent is stearic acid.
Claim 31
Dependent Claim
17 words
The method of claim 26 in which a minor portion of said superfatting agent comprises oleic acid.
Claim 32
Dependent Claim
20 words
The method of claim 25 in which said fatty oil is a mixture of tallow, coconut oil and castor oil.
Claim 33
Dependent Claim
34 words
The method of claim 28 in which said castor oil constitutes about 10-30 weight percent of said fatty oil mixture and the weight ratio of tallow to coconut oil is about 50:50 to 85:15.
Claim 34
Dependent Claim
17 words
The mixture of claim 25 in which water is added to the mixture prior to said saponification.
Claim 35
Independent Claim
16 words
The method of any one of claims 25-30 in which said polyhydric alcohol comprises propylene glycol.
Claim 36
Independent Claim
15 words
The method of any one of claims 25-30 in which said diamine is N,N,N',N'-tetrakis(2-hydroxypropyl) ethylenediamine.
Claim 37
Dependent Claim
13 words
The method of claim 32 in which said polyhydric alcohol is propylene glycol.
Claim 38
Independent Claim
19 words
The method of any one of claims 25-30 in which said polyhydric alcohol is present during the saponification step.
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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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |