US4661289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent compositions
Assignee: Lever Brothers Co
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Filing: 1985-08-27
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Granted: 1987-04-28
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Expires: 2005-08-27
Abstract
Abstract The invention pertains to fabric-washing and -softening compositions comprising a combination of a cationic softening agent and a fungal cellulase. The compositions combine good cleaning performance with effective textile-softening performance on a wide range of natural and synthetic fibres.
Inventors
- 👤 Michael W. Parslow
- 👤 Jacobus R. Nooi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38645; C11D1/00; C11D1/86; C11D1/02; C11D1/12; C11D1/22; C11D1/38; C11D1/62; C11D1/66; C11D1/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
An alkaline detergent composition for the cleaning and softening of fabrics comprising: (a) from 2 to 50% by weight of a detergent surfactant selected from the group consisting of anionic, nonionic surfactants and mixtures thereof; (b) from 1.5 to 6% by weight of a cationic fabric-softening compound; (c) from 0 to 80% by weight of a detergency builder, and (d) from 0.1 to 10% by weight of a fungal cellulase, comprising the cellulase in an amount corresponding to from about 4 to about 150 regular C x units/gram of the detergent composition.
Claim 2
Dependent Claim
92 words
An alkaline detergent composition for the cleaning and softening of fabrics comprising: (a) from 2 to 50% by weight of a detergent surfactant selected from the group consisting of anionic, nonionic surfactants and mixtures thereof; (b) from 1.5 to 6% by weight of a cationic fabric-softening compound; (c) from 0 to 80% by weight of a detergency builder, and (d) from 0.1 to 10% by weight of a fungal cellulase, comprising the cellulase in an amount corresponding to from about 4 to about 150 regular C x units/gram of the detergent composition.
Claim 3
Dependent Claim
18 words
A composition according to claim 1, comprising a fungal cellulase having an optimum activity at alkaline pH values.
Claim 4
Dependent Claim
24 words
A composition according to claim 1, wherein the cationic compound is a di(C 16 -C 20 alkyl) di(C 1 -C 4 alkyl) ammonium salt.
Claim 5
Dependent Claim
75 words
A composition according to claim 1, wherein the cationic compound is a C 10 -C 25 alkyl imidazolinium salt corresponding to the formula: ##STR6## wherein R 6 is a C 1 -C 4 alkyl radical, R 5 is hydrogen or a C 1 -C 4 alkyl radical, R 8 is a C 10 -C 25 alkyl radical and R 7 is hydrogen or a C 10 -C 25 radical, X being a charge balancing anion.
Claim 6
Dependent Claim
17 words
A composition according to claim 1, which comprises 5 to 15% by weight of the anionic surfactant.
References Cited (Backward Citations)
GB1079388A
Cited
US3644203A
Cited
US3607763A
Cited
US3886075A
Cited
US3954632A
Cited
FR2236925A1
Cited
GB1514216A
Cited
US3936537A
Cited
US4292035A
Cited
EP0011340B1
Cited
EP0026528A1
Cited
GB2075028A
Cited
GB2094826A
Cited
GB2095275A
Cited
US4404115A
Cited
US4464272A
Cited
US4479881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |