CA2124790C - Rinse-active foam control particles - Google Patents
Rinse-active foam control particlesInfo
- Publication number
- CA2124790C CA2124790C CA002124790A CA2124790A CA2124790C CA 2124790 C CA2124790 C CA 2124790C CA 002124790 A CA002124790 A CA 002124790A CA 2124790 A CA2124790 A CA 2124790A CA 2124790 C CA2124790 C CA 2124790C
- Authority
- CA
- Canada
- Prior art keywords
- foam
- control
- soap
- slurry
- detergent composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0094—High foaming compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
- C11D13/14—Shaping
- C11D13/20—Shaping in the form of small particles, e.g. powder or flakes
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0026—Low foaming or foam regulating compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Detergent Compositions (AREA)
- Medicinal Preparation (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
The present invention provides rinse-active foam-control particles for inclusion in a detergent composition in powder form, consisting essentially of a soap of fatty acids of which at least 80 % con tain from 16 to 18 carbon atoms, the geometric mean particle size of the panicles being inferior to 1 mm, preferably inferior to 0.4 mm. The present invention also encompasses a process for making said foam-control agents, as well as high sud and low sud exe cutions of detergent compositions containing said foam-control panicles.
Description
21 2 1 ~ 9 0 RINSE-ACTIVE FOAM CONTROL PARTICLES
' Technical Field The present invention is concerned with ri~~~ active : :foam:control particles for inclusion in a detergent :-composition, i.e. foam control particles mainly active in the ri n~? cycle of a laundry process, with a meth?d : : for making such particles, and with detergent ' compositions containing such particles.
~ ~ , ; Background It has become common practice in the detergent : industry to include in detergent co~sitions materials which are intended to control the amount of , foam produced during a laundry process.
Although suds-control during the washing cycle of a laundry process is important, so as to avoid negative interference~with the action of the wash liquor upon : the fabrics, it is also known that suds-control during the rinse cycle~of a laundry process is desirable;
' Technical Field The present invention is concerned with ri~~~ active : :foam:control particles for inclusion in a detergent :-composition, i.e. foam control particles mainly active in the ri n~? cycle of a laundry process, with a meth?d : : for making such particles, and with detergent ' compositions containing such particles.
~ ~ , ; Background It has become common practice in the detergent : industry to include in detergent co~sitions materials which are intended to control the amount of , foam produced during a laundry process.
Although suds-control during the washing cycle of a laundry process is important, so as to avoid negative interference~with the action of the wash liquor upon : the fabrics, it is also known that suds-control during the rinse cycle~of a laundry process is desirable;
2~2~79{) 2 Indeed, excessive foaming during the rinse cycle in a washing machine can cause foam spillage and damage to the machine, while in a handwash context, there is an advantage in lowering the foam production during rinsing, so as to shorten this step.
Soaps of fatty acids have been used for such a rinse active suds control function, and they have always been spray dried together with the rest of the detergent composition: -However, there is a desire to re~ organic .
emissions during manufacturing of detergents, in particular during spray-drying.
The~ p~e-snt invention provides foam control fatty acid soap particles which are made separately from the rest of t~- spray-dried detergent composition, and a p~ to make them, not causing organic emissions.
Summarv of the Invention The present invention provides rinS- active foam-control particles for inclusion in a detergent composition in powder form, consisting eseentially of a soap of fatty acids of which at least 80% contain from 16 to 18 carbon atoms, the geometric mean particle size of the particles being inferior to 1 mm, preferably inferior to 0.4 mm.
The pl~e~qnt invention also encom~ a process for making 9aid 'foam-contro} agents, as well as high suds and low sud executions of detergent compositions containinq said foam-control particles.
W093/11216 ~ 1 2~17~0 PCT/US92/10390 Detailed Descri~tion of the Invention The antifoam ~articles The foam-control particles of the invention are mainly constituted of a soap of fatty acids of which at least 80% by weight contain from 16 to 18 carbon atoms; preferred fatty acids are tallow or ;~ tallow/~o~o.. uL mixtures at a welght ratio of tallow to c~ L not less t~an 70/30; particularly preferred is a 90/10 tallow/cooon~lt mix~u~. Suit~ble cations wbich render t~e soap water solub~e and/or ~is~ersible , include sodium, potassium, ammonium, monoethanolammonium, diethanolammonium, triethanolammonium, tetramethylammoniuml etc. Sodium ~;
ions ore preferred.
The~particles of the invention are further characterized by their particle size, which is such that the geometric mean particle size, which is the ' median of the cumulative weight distribution, should be less than 1 mm and preferably less than 0.4 mm.
The individual particle size of a particle is meant as being the sum of the longest and the shortest dimension of the particle di~ided by two.
' The cumulative weight distribution of the particles can be conveniently measured by sieving with an air-fluidized sieve.
~; option~l Tngredients The~particles herein optionally include a free-flowing agent such as amorphous silica, at levels not eX~-e~l i n~ 5% by weight of the particle.
WOg3/11216 PCT/US92/10390 212 179~
Makinq ~rocess for the anti-foam Darticles of the invention The process herein contains essentially the steps of drying a fatty acid soap slurry to a low moisture level, i.e. a moisture level not exceeding 9%, preferably not exc~e~ing 5% by weight of the slurry, then pres~inq the slurry into noodles, and s~ccessively grinAing the noodles to a fine powder with the particle size required herein.
. ~
The control of the moisture level is a particularly critical feature of the process ~erein, since ve~e~ful grin~ing to the required particle size will not be possible without meeting the claimed moisture level.
Drying of the soap slurry is preferably achieved ùnder vaouum. Supplementary drying during the grin~ LC _e~ may be a~ G~,iate, and achieved for -~ example in an air classifier.
- A typical met~od to measure the moisture level in the sopa slurry and/or the noodles i5 a solvent distillation method, using a Bidwell~ apparatus.
:~
Deter~ent co~osition In another embodiment of the present invention, it is herewith pro~ided a detergent composition in powder form, comprising a surface-active agent and foam ~- control particles such as described above. Addition of the particles herein in detergent compositions can be achieved-by e.g. dry-mixing. The amount of foam c~..L~ol~particles is typically from 0.25 to 5% by P~ weeight~of tbe~composition, depen~ing on the type of detergent composition involved.
wog3/ll2l6 2 1 2 ~1 7 g ~ PCr~US92110390 SURFACTANT
A wide range of surfactants can be used in the detergent compositions. A typical listing of anionic, nonionic, ampholytic and zwitterionic classes, and species of these surfactants, is given in US Patent 3,664,961 iSslt~d to Norris on May 23, 1972.
Mixtures of anionic surfactants are particularly suitable herein, especially mixL~-e_ of sulphonate and sulphate surfactants in a weight ratio of from 5:1 to 2, preferably from 3:1 to 2:3, more preferably from 3:1 to 1:1. Preferred sulphonates include alkyl benzene sulphonates haYing from 9 to 15, especially 11 to 13 carbon atoms in the alkyl radical, and alpha-sulphonated~methyl fatty acid esters in which the fatty acid~is derived from a C12-C18 fatty source preferably from a C16-C18 fatty source. In each instance the cation is an alkali metal, preferably sodium.
; Preferred s~lr~-te surfactants are alkyl sulphates having from 12 to 18 r~rhon atoms in the alkyl radical, optionally in admixture with ethoxy sulphates having ~' from 10 to 20, preferably 10 to 16 carbon ato~s in the alkyl radical and an average degree of ethoxylation of 1 to 6. Examples of preferred alkyl sulphates herein are tallow alkyl sulphate, roconut alkyl sulphate, and C14_15 alkyl sulphates. The cation in each instance is again an alkali metal cation, preferably sodium.
one class of nonionic surfactants useful in the present imention are condensates of ethylene oxide with a h~d~ obic moiety to provide a surfactant having an average hydrophilic-lipophilic balance (HLB) in the ranqe from 8 to 17, preferably from 9.5 to 13.5, more preferably from 10 to 12.5. T~e hydrophobic -~- (l;rorh;lic) moiety may be aliphatic or aromatic in nature :and th- length of the polyox~hylene group whid ~is .~~'~nse~ with any particular hydlG~llobic group can be readily adjusted to yield a water-soluble compound having the desired degree of balance between hy7~l,hilic and hydrophobic elements.
WOg3/l1216 PCT/US92/10390 212~7 ,I' Especially preferred nonionic surfactants of this type are the C9-C15 primary alcohol ethoxylates containing 3-8 moles of ethylene oxide per mole of alcohol, particularly the C14-C15 primary alcohols containing 6-8 moles of ethylene oxide per mole of alcohol and the C12-C14 primary alcohols containing 3-5 moles of ethylene oxide per mole of alcohol.
Another class of nonionic surfactants comprises alkyl polyglucoside com~o~l,ds of general formula R0 (CnH2n~)tZx ~ ;
wherein Z is a moiety derived from glucose; R is a -~
saturated hydrophobic alkyl group that contains from 12 :~
~ to 18 carbon atoms; t is from 0 to 10 and n is 2 or 3; -~:
:~; x is from 1.3 to 4, the com~o~ including less than ~--~ : 10% unreacted fatty alcohol and less than 50% short ~:
:, cb-i~ alkyl polyglucosides. compQ~tnAc of this type and their use in detergent are disclosed in EP-B 0 070 077, 0 075 996 and 0 094 118.
: Also suitable as nonionic surfactants are poly hydroxy fatty acid amide surfactants of the formula R2 : - C - N - Z, wherein ~1 is H, O Rl Cl 4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl or a mixture thereof, R2 is C5 31 hydrocarbyl, and Z is a polyhydroxyhydrocarbyl having a linear hydrocarbyl '~
rh~in with at least 3 hydroxyls directly conn~cted to the chain, or an alkoxylated deri~ative thereof.
Preferably, Rl is methyl, R2 is a straight Cll 15 alkyl or alkenyl chain such as coconut alkyl or mixtures thereof, and Z is derived from a reA~ci~q sugar such as glucose, fructose, maltose, lactose, in a reductive amination reaction, :: :
: A further class of surfactants are the semi-polar surfactants such as amine oxides. Suitable amine , 212~ ~ 9~) WO g3/11216 PCT/USg2/10390 oxides are selected from mono C8-C20, preferably C10-C14 N-alkyl or alkenyl amine oxides and propylene-1,3-diamine dioxides wherein the remaining N positions are substituted by methyl, hydroxyethyl or hydroxypropyl ~ L OU~JS .
Another class of surfactants are amphoteric surfactants, such as polyamine-based species.
Cationic surfactants can also be used in the d~tergent compositions harein and suitable quaternary ammonium surfactants are selected from mono C8-C16, ref-r~bly C10-C14 N-alkyl or alkenyl ammonium surfacta~nts wherein remaining N positions are substituted by ~ethyl, hyd~o~eLhyl or hydroxypropyl Q ~
Mi~Lule-~ of surfactant types are preferred, more especiAl~y anionic-nonionic and also anionic-nonionic-cationic mixtures. Particularly preferred mi~LuLe~ are degcribed in British Patent No. 2040987 and European -hl; ~d Application No. 0 087 914. The detergent co~positions can comprise fro~ 1%-70~ by weight of surfactant, but usually the surfactant is present in the compositions herein an amount of from 1% to 30%, more prefera~ly from 10-25% by weight.
The detergent compositions herein preferably also contain a builder, which can be selected from ph~tes, alu~inosilicate ion PYr~an~ers (zeolites), and water-soluble monomeric or oligomeric carboxylate chelating agents such as citrates, succinates, oxydisuccinates, as well as mixtures of the above species.
Other suitable builder~materials include alkali metal~carbonates, bic~r~nAtes and silicates, organic p o-phon~tes,~amino polyalkylene ~os~on~tes and amino polycarboxylates, ethylene diamine tetraacetic acid and nitrilotriacetic acid. Ot~er suitable water-WO93/11216 PCT/USg2/103~
21217~ 8 soluble organic salts are the homo- or co-polymeric polycarboxylic acids or their salts in which tbe polycarboxylic acid comprises at least two carboxyl radicals separated from each other by not more than two carbon atoms. Polyaers of this type are disclosed in GB-A-l,596,756. Examples of such salts are polyacrylates of MW 2000-5000 and their copolyaers with aaleic anhydride, such copolyaers having a molec~1Ar weight of from 20,000 to 70,000, especially about 40,000.
Other in~redients which typically form part of a detergent co~position in powder form include filler .
salts such as sodium sulphates, blea~hing agents, such as sodium ~LLo~te and percarbonate, bleach ~-activators, anti redeposition agents such as ra~hQ-y~ethyl ce}lulase, enzy~es, such as proteases, a~yla-es, lip~ses, and ~ es, brighteners, fabric sof~*ni~ cl~ys, perfu~es, dyes, piqments. -'~
The dete~rgent co~positions herein can be of the high-suds~ type, and be designed for hand-wash or in upright washing machine ut~lization. In such executions, the level of fo~m control particles is typically from 2% to 5% by weight.
The compositions of the invention can also be of the "low-suds" type and thus be adapted for use in wa~ing ~-machines of all types; in this latter c~tegory, detergent co~positions enco~pass ~compact~ executions, where the density is typically above 550g/litre of composition, and the level of filler salt is typically below 5% by weight of the composition.
In such ~c~tions, the level of foam-~GnL~ol p~rticl-s is typically from 0.25% to 2%.
In the "low-suds~ execution herein, a suds-controlling agent active in the wash cycle is typically included, in addition to the rinse-active WO93/11216 2 1 2 ~ 7 9 0 PCT/US92/1039~
. .
foam-control agents of the invention. Such additional foam-control agents are preferably silicones.
F~lt AMPT .F~.C;
The following examples illustrate the invention and facilitate its understanding.
.
The abbreviations for the individual ingredients have the following meAning LAS: sodium salt of linear dodecyl ben7~re sulfonate TAS: sdium salt of tallow alcohol sulfate Nonio~i~: fatty alcohol ( Cl4 - Cl5 ) ethoxylated with about 7 moles of ethylene oxide ~
Copplymer AA~MA: copo}ymer of acrylic acid and maleic .
' acid CNQ: ~a~ o~methylcellulose Na ~: ~phonate: sodium salt of ethylenediamine tetramethylene ph~r~n i c acid $AED: tetra aoetyl ethylene diamine The following compositions were prepared. -~
~; ~xa~ple I ("High Suds" execution) LAS 20%
- Sodium Tripolyphosphate 23%
Sodium Silicate 6%
CMC Q.15%
Sodium Sulphate 34%
Na Phosr~n~te 0.1%
Sodium Carbonate 5%
Copolymer AA/MA 2.5%
Sodium Soap *particles* 3%
Enzyme, brighteners, perfume and minors up to lO0 Density 360g/l * prepared as described above and dry-mixed with the NSt: of the composition.
WO g3/l 1216 PCr/US92/1~390 212 i 7 9 ~) EX~D1e ~ LOW Suds" execution, in compact form) LAS 8 %
TAS 2 %
Nonionsc 6%
Sodium Carbonate 14%
Sodium Citrate 6%
Zeolite 20~ ~-Sodium Silicate 3%
:~: CMC 0.5%
Sodium Sulphate 3.5%
;: Na ,b~~r~D~ate a.4%
Sodium Na Perborate Monohydrate 16%
Sodium Soap *particles* ' 1%
Silicone 0.5%
Sodium Salt of Copolymer AA/MA 4%
TAED 5%
Enzyme, perfume, brighteners and minors up to 100 -~ Density 700g/1 * prepared as described above and dry-mixed with the ::: rest of the composition.
. ,i". ~
Soaps of fatty acids have been used for such a rinse active suds control function, and they have always been spray dried together with the rest of the detergent composition: -However, there is a desire to re~ organic .
emissions during manufacturing of detergents, in particular during spray-drying.
The~ p~e-snt invention provides foam control fatty acid soap particles which are made separately from the rest of t~- spray-dried detergent composition, and a p~ to make them, not causing organic emissions.
Summarv of the Invention The present invention provides rinS- active foam-control particles for inclusion in a detergent composition in powder form, consisting eseentially of a soap of fatty acids of which at least 80% contain from 16 to 18 carbon atoms, the geometric mean particle size of the particles being inferior to 1 mm, preferably inferior to 0.4 mm.
The pl~e~qnt invention also encom~ a process for making 9aid 'foam-contro} agents, as well as high suds and low sud executions of detergent compositions containinq said foam-control particles.
W093/11216 ~ 1 2~17~0 PCT/US92/10390 Detailed Descri~tion of the Invention The antifoam ~articles The foam-control particles of the invention are mainly constituted of a soap of fatty acids of which at least 80% by weight contain from 16 to 18 carbon atoms; preferred fatty acids are tallow or ;~ tallow/~o~o.. uL mixtures at a welght ratio of tallow to c~ L not less t~an 70/30; particularly preferred is a 90/10 tallow/cooon~lt mix~u~. Suit~ble cations wbich render t~e soap water solub~e and/or ~is~ersible , include sodium, potassium, ammonium, monoethanolammonium, diethanolammonium, triethanolammonium, tetramethylammoniuml etc. Sodium ~;
ions ore preferred.
The~particles of the invention are further characterized by their particle size, which is such that the geometric mean particle size, which is the ' median of the cumulative weight distribution, should be less than 1 mm and preferably less than 0.4 mm.
The individual particle size of a particle is meant as being the sum of the longest and the shortest dimension of the particle di~ided by two.
' The cumulative weight distribution of the particles can be conveniently measured by sieving with an air-fluidized sieve.
~; option~l Tngredients The~particles herein optionally include a free-flowing agent such as amorphous silica, at levels not eX~-e~l i n~ 5% by weight of the particle.
WOg3/11216 PCT/US92/10390 212 179~
Makinq ~rocess for the anti-foam Darticles of the invention The process herein contains essentially the steps of drying a fatty acid soap slurry to a low moisture level, i.e. a moisture level not exceeding 9%, preferably not exc~e~ing 5% by weight of the slurry, then pres~inq the slurry into noodles, and s~ccessively grinAing the noodles to a fine powder with the particle size required herein.
. ~
The control of the moisture level is a particularly critical feature of the process ~erein, since ve~e~ful grin~ing to the required particle size will not be possible without meeting the claimed moisture level.
Drying of the soap slurry is preferably achieved ùnder vaouum. Supplementary drying during the grin~ LC _e~ may be a~ G~,iate, and achieved for -~ example in an air classifier.
- A typical met~od to measure the moisture level in the sopa slurry and/or the noodles i5 a solvent distillation method, using a Bidwell~ apparatus.
:~
Deter~ent co~osition In another embodiment of the present invention, it is herewith pro~ided a detergent composition in powder form, comprising a surface-active agent and foam ~- control particles such as described above. Addition of the particles herein in detergent compositions can be achieved-by e.g. dry-mixing. The amount of foam c~..L~ol~particles is typically from 0.25 to 5% by P~ weeight~of tbe~composition, depen~ing on the type of detergent composition involved.
wog3/ll2l6 2 1 2 ~1 7 g ~ PCr~US92110390 SURFACTANT
A wide range of surfactants can be used in the detergent compositions. A typical listing of anionic, nonionic, ampholytic and zwitterionic classes, and species of these surfactants, is given in US Patent 3,664,961 iSslt~d to Norris on May 23, 1972.
Mixtures of anionic surfactants are particularly suitable herein, especially mixL~-e_ of sulphonate and sulphate surfactants in a weight ratio of from 5:1 to 2, preferably from 3:1 to 2:3, more preferably from 3:1 to 1:1. Preferred sulphonates include alkyl benzene sulphonates haYing from 9 to 15, especially 11 to 13 carbon atoms in the alkyl radical, and alpha-sulphonated~methyl fatty acid esters in which the fatty acid~is derived from a C12-C18 fatty source preferably from a C16-C18 fatty source. In each instance the cation is an alkali metal, preferably sodium.
; Preferred s~lr~-te surfactants are alkyl sulphates having from 12 to 18 r~rhon atoms in the alkyl radical, optionally in admixture with ethoxy sulphates having ~' from 10 to 20, preferably 10 to 16 carbon ato~s in the alkyl radical and an average degree of ethoxylation of 1 to 6. Examples of preferred alkyl sulphates herein are tallow alkyl sulphate, roconut alkyl sulphate, and C14_15 alkyl sulphates. The cation in each instance is again an alkali metal cation, preferably sodium.
one class of nonionic surfactants useful in the present imention are condensates of ethylene oxide with a h~d~ obic moiety to provide a surfactant having an average hydrophilic-lipophilic balance (HLB) in the ranqe from 8 to 17, preferably from 9.5 to 13.5, more preferably from 10 to 12.5. T~e hydrophobic -~- (l;rorh;lic) moiety may be aliphatic or aromatic in nature :and th- length of the polyox~hylene group whid ~is .~~'~nse~ with any particular hydlG~llobic group can be readily adjusted to yield a water-soluble compound having the desired degree of balance between hy7~l,hilic and hydrophobic elements.
WOg3/l1216 PCT/US92/10390 212~7 ,I' Especially preferred nonionic surfactants of this type are the C9-C15 primary alcohol ethoxylates containing 3-8 moles of ethylene oxide per mole of alcohol, particularly the C14-C15 primary alcohols containing 6-8 moles of ethylene oxide per mole of alcohol and the C12-C14 primary alcohols containing 3-5 moles of ethylene oxide per mole of alcohol.
Another class of nonionic surfactants comprises alkyl polyglucoside com~o~l,ds of general formula R0 (CnH2n~)tZx ~ ;
wherein Z is a moiety derived from glucose; R is a -~
saturated hydrophobic alkyl group that contains from 12 :~
~ to 18 carbon atoms; t is from 0 to 10 and n is 2 or 3; -~:
:~; x is from 1.3 to 4, the com~o~ including less than ~--~ : 10% unreacted fatty alcohol and less than 50% short ~:
:, cb-i~ alkyl polyglucosides. compQ~tnAc of this type and their use in detergent are disclosed in EP-B 0 070 077, 0 075 996 and 0 094 118.
: Also suitable as nonionic surfactants are poly hydroxy fatty acid amide surfactants of the formula R2 : - C - N - Z, wherein ~1 is H, O Rl Cl 4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl or a mixture thereof, R2 is C5 31 hydrocarbyl, and Z is a polyhydroxyhydrocarbyl having a linear hydrocarbyl '~
rh~in with at least 3 hydroxyls directly conn~cted to the chain, or an alkoxylated deri~ative thereof.
Preferably, Rl is methyl, R2 is a straight Cll 15 alkyl or alkenyl chain such as coconut alkyl or mixtures thereof, and Z is derived from a reA~ci~q sugar such as glucose, fructose, maltose, lactose, in a reductive amination reaction, :: :
: A further class of surfactants are the semi-polar surfactants such as amine oxides. Suitable amine , 212~ ~ 9~) WO g3/11216 PCT/USg2/10390 oxides are selected from mono C8-C20, preferably C10-C14 N-alkyl or alkenyl amine oxides and propylene-1,3-diamine dioxides wherein the remaining N positions are substituted by methyl, hydroxyethyl or hydroxypropyl ~ L OU~JS .
Another class of surfactants are amphoteric surfactants, such as polyamine-based species.
Cationic surfactants can also be used in the d~tergent compositions harein and suitable quaternary ammonium surfactants are selected from mono C8-C16, ref-r~bly C10-C14 N-alkyl or alkenyl ammonium surfacta~nts wherein remaining N positions are substituted by ~ethyl, hyd~o~eLhyl or hydroxypropyl Q ~
Mi~Lule-~ of surfactant types are preferred, more especiAl~y anionic-nonionic and also anionic-nonionic-cationic mixtures. Particularly preferred mi~LuLe~ are degcribed in British Patent No. 2040987 and European -hl; ~d Application No. 0 087 914. The detergent co~positions can comprise fro~ 1%-70~ by weight of surfactant, but usually the surfactant is present in the compositions herein an amount of from 1% to 30%, more prefera~ly from 10-25% by weight.
The detergent compositions herein preferably also contain a builder, which can be selected from ph~tes, alu~inosilicate ion PYr~an~ers (zeolites), and water-soluble monomeric or oligomeric carboxylate chelating agents such as citrates, succinates, oxydisuccinates, as well as mixtures of the above species.
Other suitable builder~materials include alkali metal~carbonates, bic~r~nAtes and silicates, organic p o-phon~tes,~amino polyalkylene ~os~on~tes and amino polycarboxylates, ethylene diamine tetraacetic acid and nitrilotriacetic acid. Ot~er suitable water-WO93/11216 PCT/USg2/103~
21217~ 8 soluble organic salts are the homo- or co-polymeric polycarboxylic acids or their salts in which tbe polycarboxylic acid comprises at least two carboxyl radicals separated from each other by not more than two carbon atoms. Polyaers of this type are disclosed in GB-A-l,596,756. Examples of such salts are polyacrylates of MW 2000-5000 and their copolyaers with aaleic anhydride, such copolyaers having a molec~1Ar weight of from 20,000 to 70,000, especially about 40,000.
Other in~redients which typically form part of a detergent co~position in powder form include filler .
salts such as sodium sulphates, blea~hing agents, such as sodium ~LLo~te and percarbonate, bleach ~-activators, anti redeposition agents such as ra~hQ-y~ethyl ce}lulase, enzy~es, such as proteases, a~yla-es, lip~ses, and ~ es, brighteners, fabric sof~*ni~ cl~ys, perfu~es, dyes, piqments. -'~
The dete~rgent co~positions herein can be of the high-suds~ type, and be designed for hand-wash or in upright washing machine ut~lization. In such executions, the level of fo~m control particles is typically from 2% to 5% by weight.
The compositions of the invention can also be of the "low-suds" type and thus be adapted for use in wa~ing ~-machines of all types; in this latter c~tegory, detergent co~positions enco~pass ~compact~ executions, where the density is typically above 550g/litre of composition, and the level of filler salt is typically below 5% by weight of the composition.
In such ~c~tions, the level of foam-~GnL~ol p~rticl-s is typically from 0.25% to 2%.
In the "low-suds~ execution herein, a suds-controlling agent active in the wash cycle is typically included, in addition to the rinse-active WO93/11216 2 1 2 ~ 7 9 0 PCT/US92/1039~
. .
foam-control agents of the invention. Such additional foam-control agents are preferably silicones.
F~lt AMPT .F~.C;
The following examples illustrate the invention and facilitate its understanding.
.
The abbreviations for the individual ingredients have the following meAning LAS: sodium salt of linear dodecyl ben7~re sulfonate TAS: sdium salt of tallow alcohol sulfate Nonio~i~: fatty alcohol ( Cl4 - Cl5 ) ethoxylated with about 7 moles of ethylene oxide ~
Copplymer AA~MA: copo}ymer of acrylic acid and maleic .
' acid CNQ: ~a~ o~methylcellulose Na ~: ~phonate: sodium salt of ethylenediamine tetramethylene ph~r~n i c acid $AED: tetra aoetyl ethylene diamine The following compositions were prepared. -~
~; ~xa~ple I ("High Suds" execution) LAS 20%
- Sodium Tripolyphosphate 23%
Sodium Silicate 6%
CMC Q.15%
Sodium Sulphate 34%
Na Phosr~n~te 0.1%
Sodium Carbonate 5%
Copolymer AA/MA 2.5%
Sodium Soap *particles* 3%
Enzyme, brighteners, perfume and minors up to lO0 Density 360g/l * prepared as described above and dry-mixed with the NSt: of the composition.
WO g3/l 1216 PCr/US92/1~390 212 i 7 9 ~) EX~D1e ~ LOW Suds" execution, in compact form) LAS 8 %
TAS 2 %
Nonionsc 6%
Sodium Carbonate 14%
Sodium Citrate 6%
Zeolite 20~ ~-Sodium Silicate 3%
:~: CMC 0.5%
Sodium Sulphate 3.5%
;: Na ,b~~r~D~ate a.4%
Sodium Na Perborate Monohydrate 16%
Sodium Soap *particles* ' 1%
Silicone 0.5%
Sodium Salt of Copolymer AA/MA 4%
TAED 5%
Enzyme, perfume, brighteners and minors up to 100 -~ Density 700g/1 * prepared as described above and dry-mixed with the ::: rest of the composition.
. ,i". ~
Claims (10)
1. A particulate foam-control composition for inclusion in a detergent composition in powder form, consisting essentially of a soap of fatty acids selected from the group consisting of tallow soap, and tallow/coconut soap with a weight ratio of tallow to coconut not less than 70/30, of which at least 80% contain from 16 to 18 carbon atoms, the geometric mean particle size of the particles being inferior to 1 mm, wherein said particulate foam-control composition becomes active primarily in the rinse cycle of a washing operation.
2. A particulate foam-control composition according to claim 1 having a geometric mean particle size inferior to 0.4 mm.
3. A process for making a foam-control agent according to claim 1, comprising the steps of;
drying a fatty acid soap slurry to a moisture level inferior to 9% by weight of the slurry, pressing said slurry into noodles, and grinding said noodles to a fine powder.
drying a fatty acid soap slurry to a moisture level inferior to 9% by weight of the slurry, pressing said slurry into noodles, and grinding said noodles to a fine powder.
4. A process according to claim 3 wherein the soap slurry is dried to a moisture level not exceeding 5% by weight of the slurry.
5. A process according to claim 3 wherein the soap slurry is vacuum dried.
6. A high-suds detergent composition in powder form comprising a surface-active agent, and from 2 to 5% by weight foam-control particles according to claim 1.
7. A detergent composition according to claim 6 which also contains a builder selected from the group of phosphates, phosphonates, aluminosilicate ion exchangers, citrates, carbonates, silicates, and mixtures thereof.
8. A low suds detergent composition in powder form comprising a surface-active agent, and from 0.25 to 2% by weight foam-control particles according to claim 1.
9. A detergent composition according to claim 8 which also contains a silicone foam-control agent active in the wash cycle.
10. A detergent composition according to claim 8 which also contains a builder selected from the group consisting of phosphates, phosphonates, aluminosilicate ion exchangers, citrates, carbonates, silicates and mixtures thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91203149.9 | 1991-12-03 | ||
| EP91203149A EP0544944A1 (en) | 1991-12-03 | 1991-12-03 | Rinse-active foam control particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2124790A1 CA2124790A1 (en) | 1993-06-10 |
| CA2124790C true CA2124790C (en) | 1998-06-30 |
Family
ID=8208047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002124790A Expired - Fee Related CA2124790C (en) | 1991-12-03 | 1992-12-01 | Rinse-active foam control particles |
Country Status (20)
| Country | Link |
|---|---|
| EP (2) | EP0544944A1 (en) |
| JP (1) | JP3357053B2 (en) |
| CN (1) | CN1040022C (en) |
| AT (1) | ATE190644T1 (en) |
| AU (1) | AU3234193A (en) |
| BR (1) | BR9206856A (en) |
| CA (1) | CA2124790C (en) |
| CZ (1) | CZ123294A3 (en) |
| DE (1) | DE69230801T2 (en) |
| EG (1) | EG20160A (en) |
| ES (1) | ES2142859T3 (en) |
| FI (1) | FI942551A0 (en) |
| HU (1) | HUT67495A (en) |
| MA (1) | MA22726A1 (en) |
| MX (1) | MX9206959A (en) |
| NO (1) | NO942053D0 (en) |
| PH (1) | PH31575A (en) |
| SK (1) | SK63994A3 (en) |
| TR (1) | TR27153A (en) |
| WO (1) | WO1993011216A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4310672A1 (en) * | 1993-04-01 | 1994-10-06 | Henkel Kgaa | Production of free-flowing detergents |
| US5972869A (en) * | 1996-12-17 | 1999-10-26 | Colgate-Palmolive Co | Mildly acidic laundry detergent composition providing improved protection of fine fabrics during washing and enhanced rinsing in hand wash |
| US6150324A (en) * | 1997-01-13 | 2000-11-21 | Ecolab, Inc. | Alkaline detergent containing mixed organic and inorganic sequestrants resulting in improved soil removal |
| US6773625B2 (en) * | 2002-08-26 | 2004-08-10 | Unilever Home & Personal Care Usa, Division Of Conopco, Inc. | Dry bleach compositions |
| EP1572996B1 (en) * | 2002-12-11 | 2014-06-11 | Novozymes A/S | Detergent composition comprising endo-glucanase |
| CN114644961A (en) * | 2014-08-01 | 2022-06-21 | 宝洁公司 | Cleansing compositions comprising high fatty acids |
| EP3383986B1 (en) * | 2015-12-02 | 2019-02-27 | Unilever N.V. | Hard surface cleaning composition |
| CN111201310B (en) * | 2017-10-19 | 2021-08-06 | 宝洁公司 | Cleaning compositions comprising fatty acid blends |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB486819A (en) * | 1936-06-18 | 1938-06-10 | Lever Brothers Ltd | Improvements in soap products and in the manufacture thereof |
| DE1467616A1 (en) * | 1965-08-20 | 1969-01-16 | Henkel & Cie Gmbh | Detergent with a low foaming power |
| GB1204123A (en) * | 1966-11-29 | 1970-09-03 | Unilever Ltd | Detergent composition |
| GB1237084A (en) * | 1967-10-02 | 1971-06-30 | Unilever Ltd | Soap drying process |
| DE2327141C3 (en) * | 1973-05-28 | 1978-10-05 | Hoechst Ag, 6000 Frankfurt | Builders for detergents and cleaning agents |
| NL191087C (en) * | 1977-06-23 | 1995-01-16 | Procter & Gamble | Granular detergent. |
| DE2857161A1 (en) * | 1977-06-29 | 1980-03-06 | Procter & Gamble | DETERGENT AND CLEANING AGENT |
| GB2040990B (en) * | 1977-11-17 | 1982-10-06 | Procter & Gamble | Granular detergent compositions for improved greasy soil removal |
| GR68037B (en) * | 1979-03-15 | 1981-10-27 | Procter & Gamble | |
| ATE10646T1 (en) * | 1979-09-29 | 1984-12-15 | The Procter & Gamble Company | DETERGENT COMPOSITIONS. |
| GR74545B (en) * | 1980-11-28 | 1984-06-29 | Procter & Gamble | |
| GR76237B (en) * | 1981-08-08 | 1984-08-04 | Procter & Gamble | |
| US4687592A (en) * | 1985-02-19 | 1987-08-18 | The Procter & Gamble Company | Detergency builder system |
| GB8518871D0 (en) * | 1985-07-25 | 1985-08-29 | Dow Corning Ltd | Detergent foam control agents |
| GB8625474D0 (en) * | 1986-10-24 | 1986-11-26 | Unilever Plc | Soap noodles |
| DE3834181A1 (en) * | 1988-10-07 | 1990-04-12 | Henkel Kgaa | LIQUID DETERGENT |
| IT1236128B (en) * | 1989-11-15 | 1993-01-08 | Mira Lanza Spa | POWDER DETERGENT, WITH HIGH CONTENT OF NONIONIC SURFACTANTS AND SOAPS. |
-
1991
- 1991-12-03 EP EP91203149A patent/EP0544944A1/en not_active Withdrawn
-
1992
- 1992-11-26 TR TR01133/92A patent/TR27153A/en unknown
- 1992-12-01 CA CA002124790A patent/CA2124790C/en not_active Expired - Fee Related
- 1992-12-01 AU AU32341/93A patent/AU3234193A/en not_active Abandoned
- 1992-12-01 AT AT93900775T patent/ATE190644T1/en not_active IP Right Cessation
- 1992-12-01 HU HU9401356A patent/HUT67495A/en unknown
- 1992-12-01 WO PCT/US1992/010390 patent/WO1993011216A1/en active IP Right Grant
- 1992-12-01 ES ES93900775T patent/ES2142859T3/en not_active Expired - Lifetime
- 1992-12-01 JP JP51032493A patent/JP3357053B2/en not_active Expired - Fee Related
- 1992-12-01 SK SK639-94A patent/SK63994A3/en unknown
- 1992-12-01 DE DE69230801T patent/DE69230801T2/en not_active Expired - Fee Related
- 1992-12-01 EP EP93900775A patent/EP0615540B1/en not_active Expired - Lifetime
- 1992-12-01 BR BR9206856A patent/BR9206856A/en not_active IP Right Cessation
- 1992-12-01 CZ CZ941232A patent/CZ123294A3/en unknown
- 1992-12-02 EG EG74492A patent/EG20160A/en active
- 1992-12-02 MX MX9206959A patent/MX9206959A/en unknown
- 1992-12-02 MA MA23016A patent/MA22726A1/en unknown
- 1992-12-02 PH PH45369A patent/PH31575A/en unknown
- 1992-12-03 CN CN92114881A patent/CN1040022C/en not_active Expired - Lifetime
-
1994
- 1994-05-31 FI FI942551A patent/FI942551A0/en unknown
- 1994-06-02 NO NO942053A patent/NO942053D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0544944A1 (en) | 1993-06-09 |
| CZ123294A3 (en) | 1995-02-15 |
| ATE190644T1 (en) | 2000-04-15 |
| WO1993011216A1 (en) | 1993-06-10 |
| BR9206856A (en) | 1995-05-02 |
| NO942053L (en) | 1994-06-02 |
| PH31575A (en) | 1998-11-03 |
| MA22726A1 (en) | 1993-07-01 |
| CN1040022C (en) | 1998-09-30 |
| NO942053D0 (en) | 1994-06-02 |
| JP3357053B2 (en) | 2002-12-16 |
| ES2142859T3 (en) | 2000-05-01 |
| AU3234193A (en) | 1993-06-28 |
| EP0615540B1 (en) | 2000-03-15 |
| DE69230801T2 (en) | 2000-11-02 |
| HUT67495A (en) | 1995-04-28 |
| JPH07501575A (en) | 1995-02-16 |
| HU9401356D0 (en) | 1994-08-29 |
| CA2124790A1 (en) | 1993-06-10 |
| FI942551A (en) | 1994-05-31 |
| MX9206959A (en) | 1993-06-30 |
| FI942551A0 (en) | 1994-05-31 |
| DE69230801D1 (en) | 2000-04-20 |
| EP0615540A4 (en) | 1994-09-28 |
| CN1075507A (en) | 1993-08-25 |
| SK63994A3 (en) | 1994-10-05 |
| TR27153A (en) | 1994-11-09 |
| EP0615540A1 (en) | 1994-09-21 |
| EG20160A (en) | 1997-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |