US4462922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatic liquid detergent composition
Assignee: Lever Brothers Co
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Filing: 1982-11-02
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Granted: 1984-07-31
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Expires: 2002-11-02
Abstract
Abstract The invention relates to aqueous enzymatic liquid detergent compositions. The use of a known enzyme-stabilizing system therein, which comprises a mixture of boric acid or an alkalimetalborate with a polyol or a polyfunctional amino compound, together with a certain level of a reducing alkalimetal salt such as sodium sulphite produces a synergistic enzyme-stabilizing effect.
Inventors
- 👤 Jelles V. Boskamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:56
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38663; C11D3/38618
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
An aqueous enzymatic liquid detergent composition comprising: (a) from 1 to 60% by weight of an anionic, nonionic, cationic, zwitterionic active detergent material or mixtures thereof, (b) from 0.001 to 10% by weight of proteolytic, amylolytic, cellulolytic enzymes or mixtures thereof, (c) from 2 to 15% by weight of boric acid or an alkalimetal borate, (d) from 2 to 25% by weight of a polyhydroxy compound selected from the group consisting of ethyleneglycol, propylene glycol, 1,2-propanediol, butyleneglycol, hexyleneglycol, glycerol, mannitol, sorbitol, erythritol, glucose fructose, lactose, erythritol-1,4-anhydride, and mixtures thereof, the weight ratio of (d):(c) being from 1:1 to 2:1, (e) from 5 to 20% by weight of a reducing alkalimetal salt selected from the group consisting of alkalimetal-sulphites, -bisulphites, -metabisulphites, -thiosulphates and mixtures thereof, and (f) from 5 to 70% by weight of water.
Claim 2
Dependent Claim
134 words
An aqueous enzymatic liquid detergent composition comprising: (a) from 1 to 60% by weight of an anionic, nonionic, cationic, zwitterionic active detergent material or mixtures thereof, (b) from 0.001 to 10% by weight of proteolytic, amylolytic, cellulolytic enzymes or mixtures thereof, (c) from 2 to 15% by weight of boric acid or an alkalimetal borate, (d) from 2 to 25% by weight of a polyhydroxy compound selected from the group consisting of ethyleneglycol, propylene glycol, 1,2-propanediol, butyleneglycol, hexyleneglycol, glycerol, mannitol, sorbitol, erythritol, glucose fructose, lactose, erythritol-1,4-anhydride, and mixtures thereof, the weight ratio of (d):(c) being from 1:1 to 2:1, (e) from 5 to 20% by weight of a reducing alkalimetal salt selected from the group consisting of alkalimetal-sulphites, -bisulphites, -metabisulphites, -thiosulphates and mixtures thereof, and (f) from 5 to 70% by weight of water.
Claim 3
Dependent Claim
12 words
The composition of claim 1, wherein the reducing alkalimetal salt is sodiumsulphite.
Claim 4
Dependent Claim
11 words
The composition of claim 1, wherein the polyhydroxy compound is glycerol.
Claim 5
Dependent Claim
10 words
The composition of claim 1, wherein the alkalimetalborate is borax.
Claim 6
Dependent Claim
14 words
The composition of claim 1, further comprising 1-60% by weight of a detergency builder.
Claim 7
Dependent Claim
48 words
The composition according to claim 1, further comprising from 2 to 25% of a polyfunctional amino compound selected from the group consisting of diethanolamine, triethanolamine, di-isopropanolamine, tri-isopropanolamine, tris(hydroxymethyl)aminomethane, and mixtures thereof, the weight ratio of amino compound to boric acid or alkalimetal borate being from 1:2 to 10:1.
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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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |