Patent US4450367A successfully refreshed from Google Patents.
US4308024A
Expired / Lapsed
US
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Fabric softening composition
Assignee: Lever Brothers Co
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Filing: 1979-10-31
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Granted: 1981-12-29
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Expires: 1999-10-31
Abstract
Abstract The invention relates to the field of fabric softening. It provides for fabric softening compositions comprising a relatively water-insoluble cationic detergent surfactant and a free C 8 -C 24 alkyl- or alkenylmonocarboxylic acid. These compositions are significantly more storage stable than compositions, wherein the monocarboxylic is present as a soap. Further inclusion of a relatively water-soluble cationic detergent surfactant or cationic polymer significantly increases the softening performance.
Inventors
- 👤 Martin A. Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:58
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/227; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M13/463
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
A fabric softening composition consisting essentially of an aqueous liquid containing from 20-95 mole % of a relatively water-insoluble cationic detergent surfactant having two C 12 -C 22 alkyl-or alkenyl groups, and from 5-80 mole % of a free C 8 -C 24 alkyl-or alkenylmonocarboxylic acid, the total amount of cationic detergent surfactant plus alkyl- or alkenylmonocarboxylic acid being from 2-20% by weight of the aqueous liquid, the composition having a pH of 5 or less.
Claim 2
Dependent Claim
76 words
A fabric softening composition consisting essentially of an aqueous liquid containing from 20-95 mole % of a relatively water-insoluble cationic detergent surfactant having two C 12 -C 22 alkyl-or alkenyl groups, and from 5-80 mole % of a free C 8 -C 24 alkyl-or alkenylmonocarboxylic acid, the total amount of cationic detergent surfactant plus alkyl- or alkenylmonocarboxylic acid being from 2-20% by weight of the aqueous liquid, the composition having a pH of 5 or less.
Claim 3
Dependent Claim
29 words
A composition according to claim 1, consisting essentially of from 40-80 mole % of the cationic detergent surfactant and from 10-40 mole % of the alkyl- or alkenylmonocarboxylic acid.
Claim 4
Dependent Claim
21 words
A composition according to claim 1, wherein the cationic detergent surfactant contains two C 16 -C 18 alkyl- or alkenyl groups.
Claim 5
Dependent Claim
21 words
A composition according to claim 1, wherein the alkylmonocarboxylic acids are the hardened tallow C 16 -C 18 saturated fatty acids.
Claim 6
Dependent Claim
34 words
A composition according to claim 1, further consisting essentially of up to 50 mole % of a relatively water-soluble cationic detergent surfactant having a quaternary ammonium group and only one C 10-24 alkyl group.
Claim 7
Dependent Claim
20 words
A composition according to claim 5, consisting essentially of from 5-30 mole % of the relatively water-soluble cationic detergent surfactant.
Claim 8
Dependent Claim
41 words
A composition according to claim 1, further comprising a cationic polymer selected from the group consisting of cationic polysaccharide gums, cationic starch, cationic polyvinyl alcohol, cationic polyvinylpyrrolidone, quaternized dextrans, quaternized hydroxy ethyl cellulose, cationic guar gum, and copolymers of dialkylamino alkylmethacrylate.
Claim 9
Dependent Claim
22 words
A composition according to claim 7, wherein the cationic polymer is a cationic guar gum, a quaternized dextran or a quaternized hydroxyethylcellulose.
Claim 10
Dependent Claim
39 words
A process for preparing aqueous compositions of claim 1, comprising premixing the cationic detergent surfactant and the alkyl- or alkenylmonocarboxylic acid, heating the resulting premix until it becomes clear, and adding the resulting, clear premix to water with stirring.
Claim 11
Independent Claim
22 words
A method for softening fabrics comprising treating said fabrics with the composition of any of claims 1 to 6, 8 or 7.
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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) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |