EP0142910A1
Expired / Lapsed
EP
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Suds suppressor compositions and their use in detergent compositions
Assignee: Procter and Gamble Ltd
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Filing: 1984-08-21
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Granted: —
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Expires: 2004-08-21
Abstract
Abstract A suds compressor composition comprising, as suds-suppressor, a blend of: (i) a high shear mix of polydimethylsiloxane (PDMS) and hydrophobic silica, the PDMS having a viscosity of from 20 to 12,500 cs, and (ii) PDMS having a viscosity of at least 25,000 cs wherein the blend has a viscosity of at least 18,000 cs, the suds suppressor being dispersed in a water-soluble or water-dispersible organic carrier comprising: (i) from 1% to 100% of a first carrier component melting in the range from 38 DEG C to 90 DEG C and (ii) from 0% to 99% of a second carrier component which is an ethoxylated nonionic surfactant melting in the range from 5 DEG C to 36 DEG C. <??>The compositions are particularly suitable in high-active containing heavy duty detergent compositions and provide improved foam regulation across the range of wash temperature, product usage, soil, load and rinsing conditions.
Inventors
- 👤 Maxim Stefan Gowland
- 👤 Stephen Anthony Johnson
- 👤 Russell Pell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 06:55
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D3/3738; C11D3/0005; C11D3/0026; Y; Y10; Y10S; Y10S516/00; Y10S516/924; Y10S516/929; Y10S516/931
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
190 words
A suds suppressor composition characterized by: (a) a suds suppressor system comprising a blend of (i) a high shear mix of polydimethylsiloxane and hydrophobic silica suds suppressing agents in a weight ratio of polydimethylsiloxane:hydrophobic silica in the range from about-75:25 to about 99:1, the polydimethylsiloxane having a viscosity at 25°C in the range from about 20 to about 12,500 cs, and (ii) polydimethylsiloxane suds suppressing agent having a viscosity at 25°C of at least about 25,000 cs wherein the blend of high shear mix and high viscosity polydimethylsiloxane has a viscosity at 25°C of at least .about 18,000 cs, the suds suppressor system being dispersed in: (b) a water-soluble or water-dispersible organic carrier comprising: (i) from about 1% to 100% by weight thereof of a first organic carrier component having a melting point in the range from about 38°C to about 90°C, and (ii) from 0% to about 99% by weight thereof of a second organic carrier component selected from ethoxylated nonionic surfactants having a hydrophilic-lipophilic balance (HLB) in the range from about 9.5 to about 13.5 and a melting point in the range from about 5°C to about 36°C.
Claim 2
Dependent Claim
190 words
A suds suppressor composition characterized by: (a) a suds suppressor system comprising a blend of (i) a high shear mix of polydimethylsiloxane and hydrophobic silica suds suppressing agents in a weight ratio of polydimethylsiloxane:hydrophobic silica in the range from about-75:25 to about 99:1, the polydimethylsiloxane having a viscosity at 25°C in the range from about 20 to about 12,500 cs, and (ii) polydimethylsiloxane suds suppressing agent having a viscosity at 25°C of at least about 25,000 cs wherein the blend of high shear mix and high viscosity polydimethylsiloxane has a viscosity at 25°C of at least .about 18,000 cs, the suds suppressor system being dispersed in: (b) a water-soluble or water-dispersible organic carrier comprising: (i) from about 1% to 100% by weight thereof of a first organic carrier component having a melting point in the range from about 38°C to about 90°C, and (ii) from 0% to about 99% by weight thereof of a second organic carrier component selected from ethoxylated nonionic surfactants having a hydrophilic-lipophilic balance (HLB) in the range from about 9.5 to about 13.5 and a melting point in the range from about 5°C to about 36°C.
Claim 3
Dependent Claim
46 words
A composition according to Claim 1 characterized in that the high shear mix is a mixture of polydimethylsiloxane having a viscosity at 25 0 C in the range from 100 to 4000cs and hydrophobic silica in a weight ratio of from about 80:20 to about 95:5.
Claim 4
Dependent Claim
68 words
A composition according to Claim 1 or 2 characterized in that the high viscosity polydimethylsiloxane has a viscosity at 25°C of at least about 30,000 cs preferably from about 50,000 cs to about 100,000 cs and the blend of high shear mix and high viscosity polydimethylsiloxane has a viscosity at 25 0 C of at least about 20,000 cs, preferably from about 25,000 cs to about 60,000 cs.
Claim 5
Dependent Claim
40 words
A composition according to any of Claims 1 to 3 characterized in that the high shear mix and high viscosity polydimethylsiloxane are in a weight ratio of from about 4:1 to about 1:4, preferably from about 2:1 to about 1:3.
Claim 6
Dependent Claim
60 words
A composition according to any of Claims 1 to 4 characterized in that the first carrier component comprises an ethoxylated nonionic surfactant having an HLB in the range from about 15 to about 19, preferably from about 17 to about 19 and a melting point in the range from about 38°C to 60°C preferably from about 40°C to about 55°C.
Claim 7
Dependent Claim
174 words
A composition according to any of Claims 1 to 5 characterized in that it additionally comprises a siloxane-oxyalkylene copolymer dispersing agent having the general formula I. wherein a is 0 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; wherein at least one R group in the compound has the formula II; and wherein the weight ratio of dispersing agent to polydimethylsiloxane is from about 1:4 to about 1:40, preferably from about 1:6 to about 1:20.
Claim 8
Dependent Claim
74 words
A composition according to Claim 6 characterized in that the siloxane-oxyalkylene ccpolymer 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 0 or 1, p has a value of at least 1, q has a value of 0 to 50 and r has a value of 1 to 50.
Claim 9
Dependent Claim
27 words
A composition according to any of Claims 1 to 7 characterized in that the weight ratio of first carrier component:suds suppressor system is from 10:1 to 1:5.
Claim 10
Dependent Claim
25 words
A composition according to any of Claims 1 to 8 in granular form characterized in that the carrier consists essentially of the first carrier component.
Claim 11
Dependent Claim
24 words
A composition according to Claim 9 characterized additionally by from 25% to 95%, preferably from 50% to 85% thereof of a solid inorganic diluent.
Claim 12
Dependent Claim
59 words
A composition according to any of claims 1 to 8 characterized in that the carrier comprises from about 1% to about 50%, preferably from about 2% to about 25% by weight thereof of the first carrier ccmponent, and from about 50% to about 99%, preferably from about 75% to about 98% by weight thereof of the second carrier component.
Claim 13
Dependent Claim
64 words
A granular detergent composition characterized by (a) from about 3% to about 60%, preferably from about 12% to about 50% of non-soap, detersive, organic surfactant selected from anionic, nonionic, ampholytic, zwitterionic and cationic surfactants and mixtures thereof, and (b) from about 0.1 to about 10%, preferably from about 0.5 to about 5% of a granular suds suppressor composition according to Claim 9 or 10.
Claim 14
Dependent Claim
80 words
A granular detergent composition characterized by: (a) from about 30% to about 99.5% of base granules comprising from about 3% to about 30%, preferably from about 5% to about 20% of non-soap organic surfactant selected from anionic and cationic surfactants and mixtures thereof, and (b) from about 0.5% to about 30%, preferably from about 3% to about 20% of a suds suppressor composition according to claim 11 sprayed in fluent form onto at least a portion of the base granules.
Claim 15
Dependent Claim
27 words
A composition according to Claim 12 or 13 characterized in that the organic surfactant comprises a water-soluble C 10-16 alkyl, alkenyl or alkaryl anionic or cationic surfactant.
Claim 16
Dependent Claim
36 words
A composition according to any of Claims 12 to 14 characterized additionally by from about 0.2% to about 3%, preferably about 0.5% to about 1.5% of C 16 -C 24 fatty acid or fatty acid soap.
References Cited (Backward Citations)
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