US3915867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Domestic laundry fabric softener
Assignee: Stepan Co
•
Filing: 1973-04-24
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Granted: 1975-10-28
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Expires: 1993-04-24
Abstract
Abstract A self-emulsifying domestic laundry fabric active softener base comprised of N-methyl, N,N-di-( Beta -C14 - C18-acyloxy ethyl), N- Beta -hydroxy ethyl ammonium metho sulfate characterized by good softening, outstanding whiteness-retention and excellent rewetting properties and has a light color having an index on the Gardner scale in the range of about 1 to 2. The active softener base is dispersed in an inert vehicle such as isopropanol and/or water and may be intermixed with other additives, such as perfumes, nonionic wetting agents, optical brighteners, etc.
Inventors
- 👤 Hyung H Kang
- 👤 Rodger G Peters
- 👤 Edward A Knaggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D1/00; C11D1/38; C11D1/62; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A SELF-EMULSIFYING DOMESTIC LAUNDARY FABRIC SOFTENER AGENT CONSISTING ESSENTIALLY OF A MIXTURE COMPRISED OF N-ALKYL-N,NDI-(B-C14-C18-ACYLOXY ETHYL), N-B-HYDROXY ETHYL AMMONIUM COMPOUNDS AND A SUBSTANITIALLY INERT VECHICLE, SAID AGENT BEING CHARACTERIZED BY GOOD FARBIC SOFTENING, WHITENESS-RESTENTION AND REWETTING PROPERTIES AND BY A LIGHT COLOR INDEX ON THE GARDNER SCALE IN THE RANGE OF ABOUT 1 TO 2, SAID C14-C18 ACYLOXY GROUP COMPRISED OF A MIXTURE OF SUBSTANTIAL AMOUNTS OF PALMITIC, STEARIC AND OLEIC RADICALS.
Claim 2
Dependent Claim
72 words
A SELF-EMULSIFYING DOMESTIC LAUNDARY FABRIC SOFTENER AGENT CONSISTING ESSENTIALLY OF A MIXTURE COMPRISED OF N-ALKYL-N,NDI-(B-C14-C18-ACYLOXY ETHYL), N-B-HYDROXY ETHYL AMMONIUM COMPOUNDS AND A SUBSTANITIALLY INERT VECHICLE, SAID AGENT BEING CHARACTERIZED BY GOOD FARBIC SOFTENING, WHITENESS-RESTENTION AND REWETTING PROPERTIES AND BY A LIGHT COLOR INDEX ON THE GARDNER SCALE IN THE RANGE OF ABOUT 1 TO 2, SAID C14-C18 ACYLOXY GROUP COMPRISED OF A MIXTURE OF SUBSTANTIAL AMOUNTS OF PALMITIC, STEARIC AND OLEIC RADICALS.
Claim 3
Dependent Claim
26 words
A softening agent as defined in claim 1 wherein said agent is N-methyl, N,N-di-( Beta -C14 - C18-acyloxy ethyl), N- Beta -hydroxy ethyl ammonium metho sulfate.
Claim 4
Dependent Claim
14 words
A softening agent as defined in claim 1 wherein said inert vehicle includes water.
Claim 5
Dependent Claim
14 words
A softening agent as defined in claim 1 wherein said inert vehicle includes isopropanol.
Claim 6
Dependent Claim
19 words
A softening agent as defined in claim 1 wherein said inert vehicle comprises a mixture of isopropanol and water.
Claim 7
Dependent Claim
48 words
A softening agent as defined in claim 1 wherein said inert vehicle is selected from the group consisting of a C1 - C4 aliphatic alcohol, a C1 - C4 aliphatic glycol, a C1 - C10 aliphatic alcohol alkali sulfate, an alkyl benzene alkali sulfonate, water and mixtures thereof.
Claim 8
Dependent Claim
28 words
A softening agent as defined in claim 1 wherein said mixture includes about 75% by weight of said agent and about 25% by weight of said inert vehicle.
Claim 9
Dependent Claim
28 words
A softening agent as defined in claim 1 wherein said mixture includes about 8% by weight of said agent and about 92% by weight of said inert vehicle.
Claim 10
Independent Claim
39 words
A method of softening domestic laundry fabrics comprising treating said fabrics in an aqueous media containing an amount of cationic quaternary ammonium softener agent comprising N-methyl-N,N-di-( Beta -C14 - C18 -acyloxy ethyl), N- Beta -hydroxy ethyl ammonium metho sulfate.
Claim 11
Independent Claim
39 words
A method of softening domestic laundry fabrics comprising treating said fabrics in an aqueous media containing an amount of cationic quaternary ammonium softener agent comprising N-methyl-N,N-di-( Beta -C14 - C18 -acyloxy ethyl), N- Beta -hydroxy ethyl ammonium metho sulfate.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |