EP0046342A1
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Detergent compositions and processes of making thereof
Assignee: Procter and Gamble Ltd
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Filing: 1981-07-23
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Granted: —
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Expires: 2001-07-23
Abstract
Abstract Foam-controlled detergent compositions comprising alkoxylated nonionic surfactani, polydimethylsiloxane foam-conltroller dispersed therein. and siloxane-oxya!ky- lene copolymer as dispersing agent therefor, the weight ratio of polydimethylsiloxane to dispersing agent lying in the range from 2 : 1 to 20 : 1. The compositions preferably also contain particulate silica in a weight ratio of polydimethylsiloxane to silica of from 20: 1 to 200: 1.
Inventors
- 👤 Shafiq Dhanani
- 👤 Ronald Macdonald
- 👤 James Spence Clunie
- 👤 Maxim Courtney Brooks
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 19:27
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D3/3738; C11D1/00; C11D1/66; C11D1/72; C11D3/0005; C11D3/0026
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A foam-controlled detergent composition characterized by from 1.5% to 100% of a mixture of: (a) alkoxylated nonionic surfactant, (b) polydimethylsiloxane foam controller in at least part of the alkoxylated surfactant, and (c) siloxane-oxyalkylene copolymer as dispersing agent therefor, wherein the weight ratio of alkoxylated nonionic surfactant to polydimethylsiloxane foam controller is in the range from 10:1 to 100:1 and the weight ratio of polydimethylsiloxane foam controller to siloxane-oxyalkylene copolymer is in the range from 2:1 to 20:1.
Claim 2
Dependent Claim
77 words
A foam-controlled detergent composition characterized by from 1.5% to 100% of a mixture of: (a) alkoxylated nonionic surfactant, (b) polydimethylsiloxane foam controller in at least part of the alkoxylated surfactant, and (c) siloxane-oxyalkylene copolymer as dispersing agent therefor, wherein the weight ratio of alkoxylated nonionic surfactant to polydimethylsiloxane foam controller is in the range from 10:1 to 100:1 and the weight ratio of polydimethylsiloxane foam controller to siloxane-oxyalkylene copolymer is in the range from 2:1 to 20:1.
Claim 3
Dependent Claim
43 words
A composition according to Claim 1 characterized in that the polydimethylsiloxane foam controller is dispersed in the nonionic surfactant together with particulate silict in a weight ratio of polydimethylsiloxane to silica in the range from 20:1 to ; preferably from 25:1 to 100:1.
Claim 4
Dependent Claim
49 words
A composition according to Claim 1 or 2 characterized in that the weight ratio of alkoxylated nonionic surfactant to polydimethylsiloxane foam controller is in the range from 25:1 to 65:1 and the weitht ratio of polydimethylsiloxane foam controller to siloxane-oxyalkylene copolymer is in the range from 5:1 to 15:1.
Claim 5
Dependent Claim
146 words
A composition according to any cf Claims 1 to 3 characterized in that the siloxaneoxyalkylene copolymer has the general formula I: wherein a is O or an integer from 1 to 3, R is an alkyl group containing from 1 to 30 carbon atoms, or a group of formula II: wherein R' is an alkylene group containing from 1 to 6 carbon atoms, b has a value of from 1 to 100; and R" is a capping group which is selected from hydrogen, alkyl, acyl, aryl, alkaryl, aralkyl or alkenyl groups containing up to 20 carbon atoms, sulfate, sulfonate, phosphate, carboxylate, phosphonate, borate or isocyanate groups, or mixtures thereof; Y is a group having the formula III:- wherein R is as defined above and c has a value from 1 to 200: and wherein at least one R group in the compound has the formula II.
Claim 6
Dependent Claim
74 words
A composition according to Claim 4 characterized in that the siloxane-oxyalkylene copolymer is selected from copolymers having the general formula IV to VII:- wherein R is a C 1-10 alkyl group, Me is methyl, G is the group of Formula II, a has a value of O or 1, p has a value of at least 1, q has a value of O to 50 and r has a value of 1 to 50.
Claim 7
Dependent Claim
47 words
A composition according to any of Claims 1 to 5 characterized by from 2% to 35% of nonionic surfactant and from 0.05% to 0.75% in total of polydimethylsiloxane foam-controller and siloxane-oxyalkylene copolymer dispersing agent in a weight ratio of foam-controller to dispersing agent from 8:1 to 12:1.
Claim 8
Dependent Claim
84 words
A granular detergent composition according to Claims 1 to 6 characterized by:- (a) from 30% to 99% of base powder comprising:- (i) from 1% to 15% of organic surfactant selected from anionic, zwitterionic and ampholytic surfactants and mixture and (ii) from 5% to 98% of a detergency builder, and (b) from 1% to 30% of a premix of alkoxylated nonionic surfactant, dispersed polydimethylsiloxane foam controller, and siloxane- oxyalkylene copolymer dispersing agent sprayed in fluent form onto at least a part of the base powder.
Claim 9
Dependent Claim
77 words
A surfactant premix for use in the foam-controlled detergent composition of Claims 1 or 7 characterized by:- (a) alkoxylated ncnionic surfactant, (b) polydimethylsiloxane foam controller dispersed in the nonionic surfactant, and (c) siloxane-oxyalkylene copolymer as dispersing agent therefor, wherein the weight ratio of alkoxylated nonionic surfactant to polydimethylsiloxane foam controller is in the range from. 10:1 to 100:1, and the weight ratio of polydimethylsiloxane foam controller to siloxane-oxyalkylene copolymer is in the range from 2:1 to 20:1.
Claim 10
Dependent Claim
48 words
A process for making a foam-controlled detergent composition according to any of Claims 1 to 7 characterized by forming a surfactant premix comprising at least part of the nonionic surfactant, the polydimethylsiloxane foam controller and siloxane-oxyalkylene copolymer and subjecting the premix in fluent form to high shear mixing.
Claim 11
Dependent Claim
44 words
A process according to Claim 9 characterized by premixing the alkoxylated nonionic surfactant and siloxane- oxyalkylene copolymer dispersing agent, admixing the polydimethylsiloxane foam controller and, where present, particulate silica with the surfactant/dispersing agent mixture, and thereafter subjecting the total mixture to high shear mixing.
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FR2328040A1
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GB1554736A
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EP0013028A1
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DE2900063A1
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