CA2249268C - Spray-dried component comprising chelant - Google Patents
Spray-dried component comprising chelant Download PDFInfo
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- CA2249268C CA2249268C CA002249268A CA2249268A CA2249268C CA 2249268 C CA2249268 C CA 2249268C CA 002249268 A CA002249268 A CA 002249268A CA 2249268 A CA2249268 A CA 2249268A CA 2249268 C CA2249268 C CA 2249268C
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- Prior art keywords
- spray
- chelant
- dried component
- weight
- alkaline earth
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- 239000013522 chelant Substances 0.000 title claims abstract description 23
- -1 alkaline earth metal sulphate Chemical class 0.000 claims abstract description 13
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 9
- 229910021653 sulphate ion Inorganic materials 0.000 claims abstract description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 6
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- BCXBKOQDEOJNRH-UHFFFAOYSA-N NOP(O)=O Chemical class NOP(O)=O BCXBKOQDEOJNRH-UHFFFAOYSA-N 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical class NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 4
- 125000003118 aryl group Chemical class 0.000 claims description 4
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 4
- VKZRWSNIWNFCIQ-UHFFFAOYSA-N 2-[2-(1,2-dicarboxyethylamino)ethylamino]butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NCCNC(C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical class 0.000 abstract description 2
- 239000003599 detergent Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 3
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical class OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VKZRWSNIWNFCIQ-WDSKDSINSA-N (2s)-2-[2-[[(1s)-1,2-dicarboxyethyl]amino]ethylamino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NCCN[C@H](C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-WDSKDSINSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- XXAXVMUWHZHZMJ-UHFFFAOYSA-N Chymopapain Chemical compound OC1=CC(S(O)(=O)=O)=CC(S(O)(=O)=O)=C1O XXAXVMUWHZHZMJ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000011128 aluminium sulphate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical class OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical class [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents
- C11D11/02—Preparation in the form of powder by spray drying
-
- 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
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/33—Amino carboxylic acids
-
- 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
- C11D3/16—Organic compounds
- C11D3/36—Organic compounds containing phosphorus
- C11D3/364—Organic compounds containing phosphorus containing nitrogen
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3245—Aminoacids
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/36—Organic compounds containing phosphorus
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to a spray-dried component which is in the for m of a free-flowing particle with high chelant activity comprising: i) at leas t 50 %, preferably at least 60 %, by weight of a chelant; ii) from 1 % to 25 % , preferably from 5 % to 10 %, by weight of a alkali metal, or alkaline earth metal sulphate; and iii) preferably less than 10 % by weight free moisture.< /SDOAB>
Description
SPRAY-DRIED COMPONENT COMPRISING CHELANT
The present invention relates to a spray-dried component comprising a chelant, in particular diethylene triamine penta(methylene phosphoric acid) or its salts.
Such components are useful in granular detergent products, and also as intermediate products in the manufacture of bar soap, detergent tablets and other detergent forms such as extrudates, agglomerates and the like.
US-A-4 259 200, issued on March 31, 1981, discloses phosphonates complexed with calcium, magnesium, zinc or aluminium ions, the molar ratio of metal ion to phosphonate being at least 1:1. It is disclosed that the magnesium and the phosphonate can be premixed in any suitable solvent, including water, optionally mixed with other detergent components and spray-dried. Improved storage stability in bleaching compositions is sought.
EP-A-0 225 309, published on June 10th, 1987, discloses the addition of salts of alkali or alkaline earth metals into particles comprising diethyiene triamine penta(methylene phosphoric acid) for the purpose of improving free-flow and storage properties. The amount of sulphate is 60% to 200% of the dry weight of the chelant, corresponding to a weight ratio of metal ion salt to chelant of from 0.6:1 to 2:1. Preferred water content after spray-drying is less than 10% by weight of the particle.
The prior art does not suggest that spray-dried components may be prepared having a high chelant content (at least SO% by weight) and which still maintain good free-flowing properties.
The object of the present invention is to provide a spray-dried component which is in the form of a free-flowing particle with high chelant activity Summary of the Invention This object is achieved by a spray-dried component comprising:
i) a chelant, said chelant being selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof;
ii) from 1 % to 25% by weight of an alkaline earth metal sulphate; and iii) free moisture characterised in that the spray-dried component comprises at least 50%
by weight of said chelant.
The chelant is preferably a phosphonic or succinic acid, or salt of phosphonic or succinic acid, more preferably the chelant is selected from the group consisting of diethylene triamine penta(methylene phosphonic acid), ethylene diamine-N,N'-disuccinic acid, or mixtures, or salts thereof.
The alkaline earth metal is preferably magnesium.
Detailed Description of the Invention The spray-dried component of the present invention comprises a chelant.
Chelants are used, for example in detergent compositions, for their ability to complex with metal irons such as iron and/or manganese forming soluble chelates. Suitable chelants can be selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof.
Useful amino carboxylates include ethylenediaminetetracetates ("EDTA"), N-hydroxyethylene diaminetriacetates, nitrilotriacetates, ethylene diamine tetraproprionates, triethylene tetraaminehexacetates, diethylenetriaminepentaacetates, and ethanoldiglycines, alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof.
Useful amino phosphonates include ethylenediaminetetrakis (methylenephosphonates), sold as DEQUEST~. Preferably these amino phosphonates do not contain alkyl or alkenyl groups with more than about 6 carbon atoms.
The present invention relates to a spray-dried component comprising a chelant, in particular diethylene triamine penta(methylene phosphoric acid) or its salts.
Such components are useful in granular detergent products, and also as intermediate products in the manufacture of bar soap, detergent tablets and other detergent forms such as extrudates, agglomerates and the like.
US-A-4 259 200, issued on March 31, 1981, discloses phosphonates complexed with calcium, magnesium, zinc or aluminium ions, the molar ratio of metal ion to phosphonate being at least 1:1. It is disclosed that the magnesium and the phosphonate can be premixed in any suitable solvent, including water, optionally mixed with other detergent components and spray-dried. Improved storage stability in bleaching compositions is sought.
EP-A-0 225 309, published on June 10th, 1987, discloses the addition of salts of alkali or alkaline earth metals into particles comprising diethyiene triamine penta(methylene phosphoric acid) for the purpose of improving free-flow and storage properties. The amount of sulphate is 60% to 200% of the dry weight of the chelant, corresponding to a weight ratio of metal ion salt to chelant of from 0.6:1 to 2:1. Preferred water content after spray-drying is less than 10% by weight of the particle.
The prior art does not suggest that spray-dried components may be prepared having a high chelant content (at least SO% by weight) and which still maintain good free-flowing properties.
The object of the present invention is to provide a spray-dried component which is in the form of a free-flowing particle with high chelant activity Summary of the Invention This object is achieved by a spray-dried component comprising:
i) a chelant, said chelant being selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof;
ii) from 1 % to 25% by weight of an alkaline earth metal sulphate; and iii) free moisture characterised in that the spray-dried component comprises at least 50%
by weight of said chelant.
The chelant is preferably a phosphonic or succinic acid, or salt of phosphonic or succinic acid, more preferably the chelant is selected from the group consisting of diethylene triamine penta(methylene phosphonic acid), ethylene diamine-N,N'-disuccinic acid, or mixtures, or salts thereof.
The alkaline earth metal is preferably magnesium.
Detailed Description of the Invention The spray-dried component of the present invention comprises a chelant.
Chelants are used, for example in detergent compositions, for their ability to complex with metal irons such as iron and/or manganese forming soluble chelates. Suitable chelants can be selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof.
Useful amino carboxylates include ethylenediaminetetracetates ("EDTA"), N-hydroxyethylene diaminetriacetates, nitrilotriacetates, ethylene diamine tetraproprionates, triethylene tetraaminehexacetates, diethylenetriaminepentaacetates, and ethanoldiglycines, alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof.
Useful amino phosphonates include ethylenediaminetetrakis (methylenephosphonates), sold as DEQUEST~. Preferably these amino phosphonates do not contain alkyl or alkenyl groups with more than about 6 carbon atoms.
Particularly preferred cheiants are diethylene triamine penta(methylene phosphoric acid) ("DTPMP") and ethylene diamine tetra(methylene phosphoric acid) (EDTMP).
Polyfunctionally-substituted aromatic chelants are also useful in the components herein.
See US-A-3 812 044, issued May 21, 1974, to Connor et al. Preferred compounds of this type in acid form are dihydroxydisuifobenzenes such as 1,2-dihydroxy-3,5-disulfobenzene.
A preferred biodegradable chelant for use herein is ethylene diamine-N,N'-disuccinate ("EDDS"), especially the [S,S] isomer as described in US-A-4 704 233, issued on November 3, 1987, to Hartman and Perkins.
Magnesium, aluminium or zinc sulphates are preferred for use in the present invention, magnesium sulphate being the most preferred. Epsom salts; MgS04 . 7H20, i.e.
the hydrated, crystalline form of magnesium sulphate with seven moles of water is particularly preferred.
The chelants used in the present invention may be conveniently provided from commercially available sources in aqueous solution. Typical commercially available solutions have a chelant activity of from about 40% to about 60% by weight.
The spray-dried component may be produced by mixing such an aqueous solution with the required amount of the sulphate, with the addition of more water if necessary to reduce total solids content, and then forming granules by spraying the solution into a conventional counter-current or co-current spray-drying tower. In the tower water is evaporated by hot gas, usually hot air, preferably to a level of less than 10% by weight of free moisture in the finished spray-dried component.
Optionally the spray-dried granules may pass through further drying and/or cooling steps in conventional process equipment, such as a fluid bed. Oversize and fines fractions are normally removed, for example, by passing the granules over vibrating screen.
Further processing including additional granulation steps, agglomeration or compaction, as well as dry mixing with other components may be to provide finished products such as detergent powders, bar soaps and tablets.
Polyfunctionally-substituted aromatic chelants are also useful in the components herein.
See US-A-3 812 044, issued May 21, 1974, to Connor et al. Preferred compounds of this type in acid form are dihydroxydisuifobenzenes such as 1,2-dihydroxy-3,5-disulfobenzene.
A preferred biodegradable chelant for use herein is ethylene diamine-N,N'-disuccinate ("EDDS"), especially the [S,S] isomer as described in US-A-4 704 233, issued on November 3, 1987, to Hartman and Perkins.
Magnesium, aluminium or zinc sulphates are preferred for use in the present invention, magnesium sulphate being the most preferred. Epsom salts; MgS04 . 7H20, i.e.
the hydrated, crystalline form of magnesium sulphate with seven moles of water is particularly preferred.
The chelants used in the present invention may be conveniently provided from commercially available sources in aqueous solution. Typical commercially available solutions have a chelant activity of from about 40% to about 60% by weight.
The spray-dried component may be produced by mixing such an aqueous solution with the required amount of the sulphate, with the addition of more water if necessary to reduce total solids content, and then forming granules by spraying the solution into a conventional counter-current or co-current spray-drying tower. In the tower water is evaporated by hot gas, usually hot air, preferably to a level of less than 10% by weight of free moisture in the finished spray-dried component.
Optionally the spray-dried granules may pass through further drying and/or cooling steps in conventional process equipment, such as a fluid bed. Oversize and fines fractions are normally removed, for example, by passing the granules over vibrating screen.
Further processing including additional granulation steps, agglomeration or compaction, as well as dry mixing with other components may be to provide finished products such as detergent powders, bar soaps and tablets.
Examples Example 1 Example 2 MgS04 . 7H20 10 Sodium chloride 5 Free moisture 5 DTPMP is hepta sodium salt of diethylene triamine penta(methylene phosphoric acid) MgS04 . 7H20 is Epsom salts All levels are % by weight unless otherwise specified The spray-dried component produced in these examples have a bulk density of from 500 g/1 to 700 g/1. The component absorbs very little moisture after manufacture (e.g. from atmospheric humidity) and hence flowability and caking problems are minimsed or eliminated even in environments of high temperature and high humidity.
Claims (6)
1. A spray-dried component comprising:
i) a chelant, said chelant being selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof;
ii) from 1 % to 25% by weight of an alkaline earth metal sulphate; and iii) free moisture characterised in that the spray-dried component comprises at least 50%
by weight of said chelant.
i) a chelant, said chelant being selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof;
ii) from 1 % to 25% by weight of an alkaline earth metal sulphate; and iii) free moisture characterised in that the spray-dried component comprises at least 50%
by weight of said chelant.
2. A spray-dried component according to claim 1 comprising:
i) at least 60% by weight of chelant;
ii) from 5% to 10% by weight of an alkaline earth metal sulphate; and iii) less than 10% by weight free moisture.
i) at least 60% by weight of chelant;
ii) from 5% to 10% by weight of an alkaline earth metal sulphate; and iii) less than 10% by weight free moisture.
3. A spray-dried component according to claim 1 or claim 2 wherein the chelant is a phosphoric or succinic acid, or salt of phosphoric or succinic acid, or mixtures thereof.
4. A spray-dried component according to claim 3 wherein the chelant is selected from the group consisting of diethylene triamine penta(methylene phosphoric acid), ethylene diamine-N,N'-disuccinic acid, salts of diethylene triamine penta(methylene phosphoric acid), salts of ethylene diamine-N,N'-disuccinic acid, or mixtures thereof.
5. A spray-dried component according to claim l, 2, 3 or 4 wherein the alkaline earth metal is magnesium.
6. A spray-dried component according to claim 5 wherein the alkaline earth metal sulphate is in the hydrated, crystalline form of MgSO4~7H2O.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP96200801.7 | 1996-03-23 | ||
| EP96200801A EP0796911B2 (en) | 1996-03-23 | 1996-03-23 | Spray-dried detergent component comprising chelant |
| PCT/US1997/004651 WO1997035953A1 (en) | 1996-03-23 | 1997-03-21 | Spray-dried component comprising chelant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2249268A1 CA2249268A1 (en) | 1997-10-02 |
| CA2249268C true CA2249268C (en) | 2002-02-05 |
Family
ID=8223811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002249268A Expired - Fee Related CA2249268C (en) | 1996-03-23 | 1997-03-21 | Spray-dried component comprising chelant |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0796911B2 (en) |
| JP (1) | JP3093283B2 (en) |
| CN (1) | CN1119403C (en) |
| AR (1) | AR006349A1 (en) |
| AT (1) | ATE218611T1 (en) |
| BR (1) | BR9708333A (en) |
| CA (1) | CA2249268C (en) |
| DE (1) | DE69621584T3 (en) |
| DK (1) | DK0796911T3 (en) |
| ES (1) | ES2177718T5 (en) |
| PT (1) | PT796911E (en) |
| WO (1) | WO1997035953A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2329188A (en) * | 1997-09-11 | 1999-03-17 | Procter & Gamble | Detergent composition containing a stabilised percarboxylic bleaching system |
| BR9914297B1 (en) * | 1998-08-27 | 2010-10-19 | process for producing a free flowing stable solid chelating composition, and a free flowing solid stable aminocarboxylate chelator. | |
| AU1311200A (en) * | 1998-10-05 | 2000-04-26 | Procter & Gamble Company, The | Process for delivering chelant agglomerate into detergent composition for improving its storage stability, flowability and scoopability |
| US6451224B1 (en) | 1999-07-21 | 2002-09-17 | The Dow Chemical Company | Stable free-flowing solid chelants |
| US6635612B1 (en) | 1999-10-01 | 2003-10-21 | The Procter & Gamble Company | Process for delivering chelant agglomerate into detergent composition for improving its storage stability, flowability and scoopability |
| EP1281676A1 (en) * | 2001-08-01 | 2003-02-05 | NV Solutia Europe S.A. | Solid free-flowing phosphonate composition and method of use |
| US7423005B2 (en) * | 2003-11-20 | 2008-09-09 | Ecolab Inc. | Binding agent for solidification matrix |
| EP2380962B1 (en) * | 2010-04-23 | 2016-03-30 | The Procter and Gamble Company | Particle |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE374762B (en) † | 1968-03-04 | 1975-03-17 | Monsanto Co | |
| US3717589A (en) † | 1970-09-17 | 1973-02-20 | Monsanto Co | Sodium nitrilotriacetate and processes for producing same |
| IL47489A (en) * | 1974-11-04 | 1978-07-31 | Witco Chemical Corp | Non-caking linear alkyl aryl sulfonate detergent compositions |
| GB1513550A (en) † | 1975-05-05 | 1978-06-07 | Unilever Ltd | Hard surface cleaning compositions |
| US4105573A (en) † | 1976-10-01 | 1978-08-08 | The Procter & Gamble Company | Dishwasher detergent composition |
| CH642678A5 (en) * | 1979-04-06 | 1984-04-30 | Unilever Nv | Bleach and detergent. |
| GR75249B (en) * | 1980-05-10 | 1984-07-13 | Procter & Gamble | |
| GB8504489D0 (en) † | 1985-02-21 | 1985-03-27 | Monsanto Europe Sa | Aminomethylenephosphonate compositions |
| GB8529409D0 (en) * | 1985-11-29 | 1986-01-08 | Monsanto Europe Sa | Aminomethylenephosphonate compositions |
| CA2096255C (en) * | 1990-11-14 | 1998-01-20 | Jeffrey D. Painter | Nonphosphated automatic dishwashing compositions with oxygen bleach systems and process for their preparation |
| FR2677370A1 (en) * | 1991-06-05 | 1992-12-11 | Nln Sa | Sequestering agent for liquid detergent compositions; liquid detergent compositions containing the said sequestering agent |
| EP0678572A1 (en) † | 1994-04-20 | 1995-10-25 | The Procter & Gamble Company | Detergent powder compositions |
-
1996
- 1996-03-23 EP EP96200801A patent/EP0796911B2/en not_active Expired - Lifetime
- 1996-03-23 ES ES96200801T patent/ES2177718T5/en not_active Expired - Lifetime
- 1996-03-23 PT PT96200801T patent/PT796911E/en unknown
- 1996-03-23 DE DE69621584T patent/DE69621584T3/en not_active Expired - Lifetime
- 1996-03-23 AT AT96200801T patent/ATE218611T1/en not_active IP Right Cessation
- 1996-03-23 DK DK96200801T patent/DK0796911T3/en active
-
1997
- 1997-03-21 CA CA002249268A patent/CA2249268C/en not_active Expired - Fee Related
- 1997-03-21 AR ARP970101151A patent/AR006349A1/en active IP Right Grant
- 1997-03-21 BR BR9708333A patent/BR9708333A/en not_active IP Right Cessation
- 1997-03-21 JP JP09534515A patent/JP3093283B2/en not_active Expired - Lifetime
- 1997-03-21 CN CN97194764A patent/CN1119403C/en not_active Expired - Lifetime
- 1997-03-21 WO PCT/US1997/004651 patent/WO1997035953A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP3093283B2 (en) | 2000-10-03 |
| BR9708333A (en) | 1999-08-03 |
| CA2249268A1 (en) | 1997-10-02 |
| CN1219197A (en) | 1999-06-09 |
| ATE218611T1 (en) | 2002-06-15 |
| AR006349A1 (en) | 1999-08-25 |
| EP0796911B2 (en) | 2005-07-13 |
| ES2177718T5 (en) | 2005-12-01 |
| DE69621584D1 (en) | 2002-07-11 |
| JPH11507098A (en) | 1999-06-22 |
| WO1997035953A1 (en) | 1997-10-02 |
| PT796911E (en) | 2002-10-31 |
| DE69621584T3 (en) | 2006-06-01 |
| DE69621584T2 (en) | 2003-01-16 |
| CN1119403C (en) | 2003-08-27 |
| EP0796911A1 (en) | 1997-09-24 |
| ES2177718T3 (en) | 2002-12-16 |
| DK0796911T3 (en) | 2002-09-30 |
| EP0796911B1 (en) | 2002-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130321 |