US4173539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic surfactant compositions
Assignee: Lever Brothers Co
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Filing: 1978-10-31
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Granted: 1979-11-06
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Expires: 1998-10-31
Abstract
Abstract A pourable, stable, liquid fabric-softening composition comprises an aqueous dispersion of particulate softening agent which comprises an quaternary ammonium salt having one straight-chain aliphatic hydrocarbon radical, complexed with an anion of an anionic surfactant in a normality ratio of 1.1:1 to 5:1.
Inventors
- 👤 Robert B. Rule
- 👤 Martin A. Wells
- 👤 John D. Dance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463; D06M2200/00; D06M2200/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
A pourable liquid fabric-softening composition of uniform turbidity comprising a dispersion in an isotropic aqueous medium of positively charged particles of softening agent with a melting point of below 95° C., which particles comprise a quaternary ammonium salt fabric softener having one straight-chain aliphatic hydrocarbon radical with from 12 to 24 carbon atoms, the chloride salt of whose cation A has a Krafft point in water of less than 95° C., complexed with the anion B of an anionic surfactant salt having one straight-chain aliphatic hydrocarbon radical with from 12 to 24 carbon atoms, the normality ratio of A to B being in the range from 1.1:1 to 5:1, the total weight of A and B present being from 2 to 15% by weight of the composition, and the composition having a clear point of above 95° C.
Claim 2
Dependent Claim
138 words
A pourable liquid fabric-softening composition of uniform turbidity comprising a dispersion in an isotropic aqueous medium of positively charged particles of softening agent with a melting point of below 95° C., which particles comprise a quaternary ammonium salt fabric softener having one straight-chain aliphatic hydrocarbon radical with from 12 to 24 carbon atoms, the chloride salt of whose cation A has a Krafft point in water of less than 95° C., complexed with the anion B of an anionic surfactant salt having one straight-chain aliphatic hydrocarbon radical with from 12 to 24 carbon atoms, the normality ratio of A to B being in the range from 1.1:1 to 5:1, the total weight of A and B present being from 2 to 15% by weight of the composition, and the composition having a clear point of above 95° C.
Claim 3
Dependent Claim
163 words
A composition according to claim 1, in which the quaternary ammonium salt has the structure R'--AR 3 N + X - , where R' is a straight-chain aliphatic hydrocarbon radical having from 12 to 24 carbon atoms, A represents a single bond or a group --COOR"--, --OOCR"--, --CONHR"--, --NHCOR"--, --SO 2 NHR"--, or 2Y m (OCH 2 CH 2 ) n --, where R" is an alkylene or hydroxyalkylene group having from 1 to 3 carbon atoms, and Y is a phenylene group, m is 0 or 1 and n is 1 to 3, and (a) each group R is an alkyl or hydroxyalkyl group having from 1 to 6 carbon atoms or a benzyl group, or (b) 2 or 3 of the groups R taken together with the nitrogen atom, represent a heterocyclic radical and any remaining group R is an alkyl or hydroxyalkyl group having from 1 to 6 carbon atoms or a benzyl group, and X - is an anion.
Claim 4
Dependent Claim
55 words
A composition according to claim 2, in which the quaternary ammonium salt has the structure R 1 R 3 N + X - , where R 1 is a straight-chain aliphatic hydrocarbon group having from 12 to 24 carbon atoms and each group R is an alkyl group having from 1 to 6 carbon atoms.
Claim 5
Dependent Claim
40 words
A composition according to claim 2, in which the quaternary ammonium salt has the structure R 1 COOCH 2 CH 2 R 3 N 3 + X - , where R 1 and R are as defined in claim 3.
Claim 6
Dependent Claim
39 words
A composition according to claim 2, in which the quaternary ammonium salt has the structure R 1 COOCH 2 CHOHCH 2 R 3 N + X - , where R 1 and R are as defined in claim 3.
Claim 7
Dependent Claim
22 words
A composition according to claim 1, in which the anion B is provided by an alkali metal salt of an organic acid.
Claim 8
Dependent Claim
18 words
A composition according to claim 1, in which the anion B is provided by a free organic acid.
Claim 9
Dependent Claim
22 words
A composition according to claim 6, in which the acid is an aliphatic carboxylic acid having from 12 to 24 carbon atoms.
Claim 10
Dependent Claim
21 words
A composition according to claim 6 in which the acid is an alkylsulphuric acid having from 12 to 24 carbon atoms.
Claim 11
Dependent Claim
24 words
A composition according to claim 6 in which the acid is an alkane or olefin sulphonic acid having from 12 to 24 carbon atoms.
Claim 12
Dependent Claim
26 words
A composition according to claim 6, in which the acid is an alkylbenzene sulphonic acid where the alkyl group has from 12 to 24 carbon atoms.
Claim 13
Dependent Claim
41 words
A process for preparing a composition according to claim 1, in which a homogeneous liquid mixture of the quaternary ammonium salt and anion-providing compound is mixed with water and subjected to shear at an elevated temperature until a dispersion is formed.
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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |