Patent US4769173A successfully refreshed from Google Patents.
US4769173A
Expired / Lapsed
US
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Enzymatic detergent and bleaching composition
Assignee: Lever Brothers Co
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Filing: 1987-12-03
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Granted: 1988-09-06
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Expires: 2007-12-03
Abstract
Abstract The invention relates to the use of a certain class of lipases together with strong bleaching agents in detergent compositions. This class of lipases consists of fungal lipases ex Humicola lanuginosa or Thermomyces lanuginosus, and bacterial lipases which show a positive immunological cross-reaction with the antibody of the lipase produced by Chromobacter viscosum var. lipolyticum NRRL B-3673. The strong bleaching agents are stronger than the sodium perborate/TAED system, i.e. stronger than peracetic acid or they yield, on perhydrolysis, a peracid faster than the sodium perborate/TAED system.
Inventors
- 👤 Johannes M. Cornelissen
- 👤 Jan Klugkist
- 👤 Cornelis A. Lagerwaard
- 👤 Ton Swarthoff
- 👤 David Thom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:22
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38627
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A detergent composition comprising from 1-50% by weight of one or more detergent-active materials, from 0-60% by weight of a builder, from 1-50% by weight of a bleaching agent and lipolytic enzymes in an amount of 0.005-100 lipolytic units per milligram of the composition, wherein the bleaching agent is based on an inorganic or organic peracid or salt thereof which is stronger than peracetic acid or comprises a bleaching agent and a bleach precursor which yields, on perhydrolysis, a peracid faster than the system sodium perborate+tetraacetyl ethylene diamine, and the lipolytic enzyme is a fungal lipase obtained from Humicola lanuginosa or Thermomyces lanuginosus.
Claim 2
Dependent Claim
103 words
A detergent composition comprising from 1-50% by weight of one or more detergent-active materials, from 0-60% by weight of a builder, from 1-50% by weight of a bleaching agent and lipolytic enzymes in an amount of 0.005-100 lipolytic units per milligram of the composition, wherein the bleaching agent is based on an inorganic or organic peracid or salt thereof which is stronger than peracetic acid or comprises a bleaching agent and a bleach precursor which yields, on perhydrolysis, a peracid faster than the system sodium perborate+tetraacetyl ethylene diamine, and the lipolytic enzyme is a fungal lipase obtained from Humicola lanuginosa or Thermomyces lanuginosus.
Claim 3
Dependent Claim
15 words
A composition according to claim 1, wherein the bleaching agent is an alkali metal persulphate.
Claim 4
Dependent Claim
42 words
A composition according to claim 1, wherein the bleaching agent is selected from the group consisting of diperoxy dodecanedioic acid, diperoxy tetradecanedioic acid, diperoxyhexadecane dioic acid, mono- and diperazelaic acid, mono- and diperbrassylic acid, monoperoxy phthalic acid, perbenzoic acid, and their salts.
Claim 5
Dependent Claim
37 words
A composition according to claim 1, wherein the bleaching agent comprises a bleaching agent and a bleach precursor which forms a peracid in solution at least two times faster than tetraacetyl ethylene diamine under the same conditions.
Claim 6
Dependent Claim
41 words
A composition according to claim 4, wherein the bleaching agent comprises sodium perborate and a bleach precursor selected from the group consisting of sodium nonanoyloxy benzene sulphonate, sodium trimethyl hexanoyloxy benzene sulphonate, sodium acetoxy benzene sulphonate and sodium benzoyloxy benzene sulphonate.
Claim 7
Dependent Claim
25 words
A composition according to any one of claims 1-5, wherein it further contains a proteolytic enzyme in an amount of 0.1-50 GU/mg of the composition.
References Cited (Backward Citations)
US4011169A
Cited
US4707291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |