WO1998014548A2 - Method for producing a detergent, specially a powder detergent for dish washing machines - Google Patents
Method for producing a detergent, specially a powder detergent for dish washing machines Download PDFInfo
- Publication number
- WO1998014548A2 WO1998014548A2 PCT/DE1997/002254 DE9702254W WO9814548A2 WO 1998014548 A2 WO1998014548 A2 WO 1998014548A2 DE 9702254 W DE9702254 W DE 9702254W WO 9814548 A2 WO9814548 A2 WO 9814548A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- soda
- citric acid
- detergent
- polymer
- reaction
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000003599 detergent Substances 0.000 title abstract description 8
- 238000004851 dishwashing Methods 0.000 title description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 25
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 16
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 13
- 239000012459 cleaning agent Substances 0.000 claims description 8
- 238000010923 batch production Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 3
- 239000001509 sodium citrate Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 claims 12
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 33
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 abstract description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 abstract description 5
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- 239000004317 sodium nitrate Substances 0.000 abstract 1
- 235000010344 sodium nitrate Nutrition 0.000 abstract 1
- 239000000047 product Substances 0.000 description 20
- 229960004106 citric acid Drugs 0.000 description 19
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 18
- 239000000203 mixture Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 8
- 239000008187 granular material Substances 0.000 description 7
- -1 citrate compound Chemical class 0.000 description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 229960000999 sodium citrate dihydrate Drugs 0.000 description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 5
- 239000007844 bleaching agent Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004382 Amylase Substances 0.000 description 3
- 102000013142 Amylases Human genes 0.000 description 3
- 108010065511 Amylases Proteins 0.000 description 3
- 108091005804 Peptidases Proteins 0.000 description 3
- 239000004365 Protease Substances 0.000 description 3
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- BGRWYDHXPHLNKA-UHFFFAOYSA-N Tetraacetylethylenediamine Chemical compound CC(=O)N(C(C)=O)CCN(C(C)=O)C(C)=O BGRWYDHXPHLNKA-UHFFFAOYSA-N 0.000 description 3
- 235000019418 amylase Nutrition 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- LRZSAGKIMYFLHY-UHFFFAOYSA-N 2-hydroxypropane-1,2,3-tricarboxylic acid;dihydrate Chemical compound O.O.OC(=O)CC(O)(C(O)=O)CC(O)=O LRZSAGKIMYFLHY-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000344 non-irritating Toxicity 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000003643 water by type Substances 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
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0052—Gas evolving or heat producing 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents
-
- 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
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0091—Dishwashing tablets
-
- 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
- C11D3/10—Carbonates ; Bicarbonates
-
- 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
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
Definitions
- the invention relates to a method for producing a cleaning agent, in particular a machine dish cleaner in powder form.
- the method is also suitable, for example, for the production of a water softener, a stain remover or a detergent.
- Dishwashers are now available in powder or tablet form as so-called "tabs". Modern machine dishwashers are low alkaline, chlorine-free and contain enzymes. To date, both phosphate-containing machine dish cleaners and phosphate-free machine dish cleaners are offered. Due to the risk of eutrophication of natural waters, there is a tendency towards phosphate-free machine dishwashers. Usual phosphate-free dishwashers contain 20 - 40% sodium citrate dihydrate, 10 - 30% soda, 0 - 40% bicarbonate, 0 - 20% silicate and 4 - 6% polymers. This
- Components are also known as builders and represent about 85% of the detergent mass.
- machine dishwashers contain 7-10% bleach, 1-2% TAED, 1-3% amylase, 1-3% protease, 1-3% nio-surfactants and 0-2% paraffin adducts.
- the invention is based on the object of proposing a simple method for producing a cleaning agent, in particular a dishes cleaner.
- This object is achieved with a process in which soda and citric acid are mixed intensively while removing heat in order to produce sodium hydrogen carbonate, sodium citrate and a portion of residual soda.
- the reaction of the starting products with one another leads to a dust-dry product with a bulk density of about 700-900 g / 1, which is ideally processed with granulating aids to form a citrate compound granulate.
- An advantageous procedure provides that the proportion of residual soda is kept below 20% GG, preferably below 15% GG.
- the high conversion rate achieved thereby has a particularly advantageous effect on the cleaning agent produced.
- Such a raw material compound can be classified as “non-irritating” since the sum of the "irritating" substances is less than 20%.
- the batch process has the advantage that the combined quantities can be dosed precisely and the required quality aspect can thus be better taken into account.
- citric acid When mixing soda and citric acid, it is suggested to add soda and spray in citric acid. It is advantageous if the citric acid is possibly injected through a nozzle on a moving mixing element, because this means that the mixing and addition of material take place at the optimum moment, both locally and in time.
- a particularly good implementation is achieved when soda and citric acid are mixed with high shear forces, such as in a ploughshare mixer.
- a ploughshare mixer with special cutter head inserts is particularly suitable.
- the combination of batch process and ploughshare mixer makes it easier to maintain constant mixing ratios and defined bulk densities, since the components can be weighed precisely before mixing and the dwell time in the mixer has to be set according to the desired degree of conversion. The necessary parameters can therefore be varied slightly in order to achieve constant quality.
- An advantageous way of temperature control in the reactor is that the heat is regulated or at least controlled by spraying in citric acid and / or cooling the reactor vessel.
- the reaction be carried out in a container and the pressure in the container should be regulated. It has proven to be advantageous to apply a negative pressure in the container at the beginning of the reaction, which changes to an excess pressure during the reaction.
- the resulting overpressure results from the resulting C0 2 .
- the resulting C0 2 reacts with further mixing of the substances with the excess soda to bicarbonate, so that the pressure generated again decreases.
- polymer is added when carrying out the process.
- the polymer is preferably added in liquid form after the reaction between sodium carbonate and citric acid in order to agglomerate the resulting particles. If liquid polymer solutions are used during the process, a grain-stable, homogeneous detergent compound is created.
- the polymer acts as a co-builder for the citrate-bicarbonate-soda builder system and bonds the dusting reaction product to particles of a defined particle size. These particles are so stable that separation of the cleaning agent produced is avoided even during transfer and transport processes.
- Low molecular weight polymer is preferably used in a concentration which leads to 4-6% active polymer in the finished compound.
- silicate is added after the reaction of soda with citric acid.
- the silicate leads to a desired protective layer for sensitive decorations.
- high silicate levels e.g. B. over 15% can, especially on glass, lead to an undesirable formation of deposits.
- Silicate can be added dry after the reaction of soda with citric acid and, if necessary, after adding the polymer. This prevents a reaction between silicate and citric acid.
- water glass ie a sodium silicate solution to the reaction mixture of citrate, bicarbonate and soda during the granulation, so that a granulate containing silicate is formed.
- the builder system produced in this way is advantageously mixed with various other substances, such as bleach, TAED, amylase, protease, nonionic surfactants and paraffin adducts, and is marketed as a free-flowing powder or pressed into tabs.
- the procedure for producing the builder system and a homogeneous mixture with the other substances leads to an easy-to-press product which is easy to tablet on the one hand and also easily soluble on the other.
- the builder system is composed of a citrate compound and a silicate compound.
- composition is suitable as a citrate compound (Citracomp plus):
- Citracomp plus (copolymer) is created by granulating the base powder with a copolymer solution in a granulator.
- a Lödige ploughshare mixer FKM 130 with knife head serves as the granulator.
- 50 kg are introduced and 7.9 kg of copolymer H 40 (Stockhausen GmbH), 40%, are metered in over about 10 minutes.
- the resulting product is dried in the fluidized bed at an air inlet temperature of 90 ° C for 13 minutes, taking care of a maximum product temperature of 60 ° C.
- the resulting product has a sieve fraction of 5.9% above 1.7 mm, 93.5% between 0.2 and 1.7 mm and 0.6% below 0.2 mm.
- a variant with disilicate is suitable as a silicate compound:
- layered silicate e.g. SKS 6 from Hoechst AG
- hydrogen carbonate bicarbonate
- a polymer-free and silicate-free variant is particularly environmentally friendly.
- the granulation is carried out, as in the other exemplary embodiments, in a Lödige ploughshare mixer FKM 130 with a knife head.
- FKM 130 Lödige ploughshare mixer
- 50 kg of base powder are introduced and then 8.65 kg of 20% aqueous solution of the base powder are metered in over about 10 minutes.
- the resulting granulate is dried in the fluidized bed in a batch dryer at an air inlet temperature of 90 ° C for 20 minutes, taking care to ensure a maximum product temperature of 60 ° C.
- a sieve fraction carried out resulted in 34% over 1.7 mm, 64% between 0.2 and 1.7 mm and 2% under 0.2 mm.
- the granulation of the base powder with sodium silicate is carried out in a granulator.
- a color protection polymer PVP polyvinyl pyrrolidone
- PVP polyvinyl pyrrolidone
- This PVP is added during granulation.
- 15.7 kg of 30% PVP solution are added to 73.7 kg of base powder.
- the granules are dried in the fluidized bed at an air inlet temperature of 90 ° C for 25 minutes, again ensuring a maximum product temperature of 60 ° C.
- the resulting product has a composition of 52% sodium citrate dihydrate, 20% bicarbonate, 20% soda, 6% PVP and 2% residual moisture.
- This special citrate compound with the color protection polymer PVP can be used 10 - 20% in color detergents.
- Figure 1 schematically shows a mixer
- FIG. 1 is a schematic of the method according to the invention.
- the mixer 1 shown in FIG. 1 essentially consists of a mixer tank 2 with a tank 3 in which a ploughshare mixer 4 and special knife head inserts 5 are arranged (Lödige mixing reactor DVT 130).
- Cutter head inserts 5 have nozzles 6 through which liquid can be sprayed into the mixer container 2 in the direction of the arrows 7, 8.
- An air discharge 9 is arranged in the container wall 3, via which air 10 can be extracted from the mixing container 2.
- the basic compound described is formed by the reactions in the reactor. This basic compound is removed from the reactor and in a granulator with granulating aids such. B. mixed liquid polymer without pressure and then dried on a fluidized bed. The dried granulate can be sold and transported.
- the user can then mix this granulated compound with other additional ingredients such as bleach 15, enzymes 16, nonionic surfactants 17, TAED 18, etc., in order to ultimately press the product into so-called tabs 20 in a press 19.
- additional ingredients such as bleach 15, enzymes 16, nonionic surfactants 17, TAED 18, etc.
- the same machine dishwashing detergent can contain 10-17% disilicate bicarbonate polymer compound instead of the silicate and the compacted bicarbonate.
- the described method is particularly inexpensive, since a large part of the cleaning agent is created directly from the particularly inexpensive raw materials, soda and citric acid, and the described method also offers the possibility of compiling different cleaning agent recipes according to individual requirements.
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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)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48619/97A AU4861997A (en) | 1996-10-02 | 1997-10-01 | Method for producing a detergent, specially a powder detergent for dish washing machines |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996140759 DE19640759A1 (en) | 1996-10-02 | 1996-10-02 | Simplified production of detergent, especially dishwashing powder |
DE19640759.1 | 1996-10-02 | ||
US6052797P | 1997-09-30 | 1997-09-30 | |
US60/060,527 | 1997-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998014548A2 true WO1998014548A2 (en) | 1998-04-09 |
WO1998014548A3 WO1998014548A3 (en) | 2000-08-24 |
Family
ID=26030051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/002254 WO1998014548A2 (en) | 1996-10-02 | 1997-10-01 | Method for producing a detergent, specially a powder detergent for dish washing machines |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU4861997A (en) |
WO (1) | WO1998014548A2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0504091A1 (en) * | 1991-03-15 | 1992-09-16 | Cleantabs A/S | A phosphate-free automatic dishwashing composition |
WO1992018596A1 (en) * | 1991-04-19 | 1992-10-29 | The Procter & Gamble Company | Granular laundry detergent compositions having improved solubility |
US5256327A (en) * | 1991-08-01 | 1993-10-26 | Shaklee Corporation | Method of preparing a sequestering agent for a non-phosphate cleaning composition |
EP0637628A2 (en) * | 1993-08-03 | 1995-02-08 | Amway Corporation | Mix process for formulating detergents |
WO1997009411A1 (en) * | 1995-09-01 | 1997-03-13 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing granulated precursors of low alkalinity detergents |
-
1997
- 1997-10-01 WO PCT/DE1997/002254 patent/WO1998014548A2/en active Application Filing
- 1997-10-01 AU AU48619/97A patent/AU4861997A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0504091A1 (en) * | 1991-03-15 | 1992-09-16 | Cleantabs A/S | A phosphate-free automatic dishwashing composition |
WO1992018596A1 (en) * | 1991-04-19 | 1992-10-29 | The Procter & Gamble Company | Granular laundry detergent compositions having improved solubility |
US5256327A (en) * | 1991-08-01 | 1993-10-26 | Shaklee Corporation | Method of preparing a sequestering agent for a non-phosphate cleaning composition |
EP0637628A2 (en) * | 1993-08-03 | 1995-02-08 | Amway Corporation | Mix process for formulating detergents |
WO1997009411A1 (en) * | 1995-09-01 | 1997-03-13 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing granulated precursors of low alkalinity detergents |
Also Published As
Publication number | Publication date |
---|---|
AU4861997A (en) | 1998-04-24 |
WO1998014548A3 (en) | 2000-08-24 |
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