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EP0353075A2
Expired / Lapsed
EP
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Liquid detergent compositions
Assignee: Unilever PLC
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Filing: 1989-07-27
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Granted: —
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Expires: 2009-07-27
Abstract
Abstract Aqueous liquid detergent compositions are required to be non-corrosive to the vessels in which they are used and have viscosities allowing convenient use. Use of amorphous silicas having defined surface area, mean pore diameter, oil absorption and weight mean particle size as components allow these desired properties to be achieved.
Inventors
- 👤 Derek Aldcroft
- 👤 John Robert Newton
- 👤 John Mark Saunders
- 👤 Peter William Stanier
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 09:44
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0008; C11D17/0013; C11D3/00; C11D3/02; C11D3/12; C11D3/124
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
Physically stable aqueous liquid detergent composition with improved non-corrosive properties and satisfactory viscosity, comprising conventional detergent ingredients characterised in that it further comprises an effective amount of amorphous silica having a surface area in the range from about 200 to about 550 m²/g, a mean pore diameter from about 1.5 to about 11 nm, an oil absorption from about 40 to about 140cc/100g and a weight mean particle size from about 1 to about 30 micron.
Claim 2
Dependent Claim
76 words
Physically stable aqueous liquid detergent composition with improved non-corrosive properties and satisfactory viscosity, comprising conventional detergent ingredients characterised in that it further comprises an effective amount of amorphous silica having a surface area in the range from about 200 to about 550 m²/g, a mean pore diameter from about 1.5 to about 11 nm, an oil absorption from about 40 to about 140cc/100g and a weight mean particle size from about 1 to about 30 micron.
Claim 3
Dependent Claim
14 words
A detergent composition according to claim 1 wherein the silica is a precipitated silica.
Claim 4
Dependent Claim
18 words
A detergent composition according to claim 1 or 2 having a viscosity not more than about 1,000 mPas.
Claim 5
Dependent Claim
35 words
A detergent composition according to any preceding claim wherein the silica increases the viscosity of the base composition by not more than about 50% preferably not more than 40% at a concentration of 5% w/w.
Claim 6
Dependent Claim
21 words
A detergent composition according to any preceding claim wherein the silica has a mean pore diameter of at least about 3nm.
Claim 7
Dependent Claim
21 words
A detergent composition according to any preceding claim wherein the silica has an oil absorption of at least about 70 cc/100g.
Claim 8
Dependent Claim
23 words
A detergent composition according to any preceding claim wherein the silica has a weight mean particle size of at least about 5 micron.
Claim 9
Dependent Claim
23 words
A detergent composition according to any preceding claim wherein the silica has a weight mean particle size of up to about 20 microns.
Claim 10
Dependent Claim
29 words
Detergent composition according to any preceding claim wherein the amorphous silica is included in an amount of from about 1 to about 5% by weight of the total composition.
Claim 11
Dependent Claim
29 words
A detergent composition according to claim 9 wherein the amorphous silica is included in an amount of from about 2 to about 4% by weight of the total composition.
Claim 12
Dependent Claim
64 words
A liquid detergent composition according to any preceding claim, comprising from about 5 to about 30% by weight of detergent active materials of the anionic, nonionic, cationic and/or zwitterionic type, from about 5 to about 50% by weight of builder materials, characterised in that the silica is included in an amount of from about 1% to about 5% by weight of the total composition.
Claim 13
Dependent Claim
29 words
Method of preventing corrosion of machine parts during washing, characterised in that a detergent composition according to any one of the preceding claims is applied in the washing process.
Claim 14
Dependent Claim
69 words
The use of an amorphous silica having a surface area in the range from about 200 to 550 m²/g, a mean pore diameter from about 1.5 to about 11 nm, an oil absorption from about 40 to about 140 cc/100 g and a weight mean particle size from about 1 to about 30 micron to provide a physically stable aqueous liquid detergent with improved non-corrosive properties and satisfactory viscosity.
Claim 15
Dependent Claim
69 words
The use of an amorphous silica having a surface area in the range from about 200 to 550 m²/g, a mean pore diameter from about 1.5 to about 11 nm, an oil absorption from about 40 to about 140 cc/100 g and a weight mean particle size from about 1 to about 30 micron to provide a physically stable aqueous liquid detergent with improved non-corrosive properties and satisfactory viscosity.
References Cited (Backward Citations)
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