SI8511788A8 - Process for production and stabilizing water suspension of powder zeolites of type a - Google Patents

Description

PROCEDURE FOR PRODUCTION AND STABILIZATION OF WATER

SUSPENSIONS OF POWDER ZEOLITE TYPE A

TECHNICAL FIELD

The invention relates to the field of manufacture of detergents and scrubbers and relates to a new process for the production and stabilization of aqueous suspension of type A powdered zeolites with a certain particle size distribution (MKP C 01B 33/26).

TECHNICAL PROBLEM

A technical problem to be solved by the present invention is how to produce staffs of lysed aqueous suspensions of type A powdered zeolites, which are capable of binding calcium ions, which suspensions can be easily pumped and transported without the risk of solids deposition.

BACKGROUND OF THE INVENTION

Alkylphenolethylene additives (DE-OS 26 15 698, DE-OS 32 09 631) are known to be used for the staffing of aluminum silicate suspensions. 50% or more is achieved here.

Methods for the manufacture of suspensions which, in addition to alkalium aluminum silicates, are known to contain ethoxylating products with 10 to 20 carbon atoms, primarily unsaturated alcohols with 1 to 8 moles of ethylene oxide per mole of alcohol (DE-OS 25 27 388, DE-OS 26 15 698) ). With dispersing agents from

- 2 of the above patent files have so far been able to achieve a concentration of solids in suspension of a maximum of 38% by weight.

Since the stability of the suspensions produced by the known processes is not entirely satisfactory, there is a need to produce more stable suspensions that would be applied in the detergents and cleaners.

DESCRIPTION OF THE TECHNICAL PROBLEM SOLUTION WITH EXAMPLES

This technical problem was solved by finding an improved new one

A process for the manufacture and staffing of an aqueous suspension of type A powdered zeolites having 35 to 60% by weight <3 µm, 82 to 95% by weight <5 µm, 93 to 99% by weight <L 10 µm and 96 up to 100% by weight of a particle <15 µm, characterized by the fact that to this suspension, which in the form of a filter cake containing water is added with continuous stirring at a temperature of 45-50 ° C, a stirring speed of 75-76 o / xnin and turbulent flow expressed by Newton's numerical designation of less than 5 with an average mixing time of 15 minutes and maintaining the suspension viscosity at 50 to 2000 mPas, as a stabilizer of 0.5 to 6% by weight of a mixture of at least two different polyglycoleters of fatty alcohols based on isotridecyl alcohol or of aliphatic C ^ -alcohol and ethylene oxide, wherein one polyglycoleter of fatty alcohols has other boy characteristics: 4.5 to 5.5 EO, the turbidity point according to DIN 53 917 is at 56 to 60 ° C, the curing point is at +4 to - 25 ° C, viscosity at 50 ° C is 13 to 28 mPas, and dense at 50 ° C it is 0.94 to 0.96 g / ml, while the second polyglycoleter of fatty alcohols has the following characteristics: 6 to 8 EO, the turbidity point according to DIN 53 917 is at 66 to 74 ° C, the solidification point is at + 12 to -16 ° C, the viscosity at 50 ° C is 18 to 2S mPas and the density at 50 ° C is 0.96 to 0.98 g / ml, and the ratio of said first and second polyglycoleter in the mixture is 7: 3 to 2 : 8.

It has thus emerged that certain alkaline-nolethoxylate mixtures, in particular, have the ability to stabilize calcium-bound aluminum-silicate suspensions to remain stable over a long period of time, even with high solids content, and even after long aging. (stands) can be pumped seamlessly.

The process described gives an aqueous stable suspension of water-insoluble lycates, capable of binding pumpable ions, which is pumpable and contains dispersing constituents, indicated by the addition of water to water relative to the total weight of the aqueous suspension, contains

A) water-insoluble silicate, capable of binding calcium, in an amount of from 0.5 to 70% by weight of a single crystalline, permanently finely divided compound, synthetically derived, containing bound water, of the general formula (Kat2 / _n 0) _x « · (SiO 2) y (I) in which Kat denotes a calcium-exchangeable valence n, x - an integer from 0.7 to 1.5,

Measure or aluminum a y - one number from 0.8 to 6 i

3) as a dispersing ingredient, in an amount of from 0.5 to 6 parts by weight of nrocents, one mixture of at least 2 different polyglycoleters of fatty alcohols based on isotridecylalko = hole or one aliphatic 0, N - alcohol and ethylene oxide, having the following characteristics:

a) polyglycoleter fatty alcohols with 4,5 to 5,5 EO turbidity point according to DIN 53 917 5θ ~ θΟ ° θ hardening point + 4- to -25 ° C viscosity at 50 ° C 15 3o 2S m dogs density at 50 ° G 0,94- to 0,96 g / ml 'o) ooliglycol ether of fatty alcohols with 6 to δ Ξ0 point of clouding point according to DII; 53 917 65 to 74- ° C hardening point +12 to -16 ° 0 viscosity at 50 ° 0 18 to 28 m dogs τηstina at 50 ° 0 0.96 to 0.93 g / ml

In suspension, oremapronalase component A can give n crystalline form.

In the formula Ϊ of component A,. y. can denote a single number from 1 ^ 3 to 4.

The crystalline form of component A may, in one preferred embodiment, be a type A zeolite.

Capred compounds are, in addition to water, significant constituents of suspensions according to the invention. However, it can also = hold other ingredients, e.g. foam - evaporate additives, or so-called dissolving agents, ie. compounds that improve the solubility of the added dispersants in the aqueous phase. Common foamy-volatile substances, for example, foamy-volatile soaps, silicone foams, foam = suture-volatile triazine derivatives, which are actually known in the art in the art, may be added as foam evaporators. One such supplement is not necessary in the general case; however, for foamy dispersing agents it may still be desirable, especially when adding larger amounts of alkylbenzenesulfonic acid.

- _ -.5-. - ..::.:.

Likewise, the addition of a solubility-enhancing agent is not generally necessary, but is still desirable if the suspension according to the invention contains a 'nidrophilic, but water-insoluble, colloid, such as poliv = niloikohoi, as a stanoylating agent. Preference is given to the use of e.g. once solubilizing agent (very suitable dimethylsulfide oxide) if the concentration of one soluble stabilizing agent in water is only slightly greater than 1%>. The share of the dissolving agent in the total suspension may be, for example, in the same order of magnitude as that of the stabilizing agent. The second, as a solubilizing agent, is a well-known compound, in addition to the expert world,; &quot; nitrotropic agents, such as, for example, benzenesulfonic acid, toluenesulfonic acid, xylolsulfonic acid = saline or their salts soluble in water and also and octyl sulfate are very comfortable for this.

For all aluminum silicate concentration data ¹¹ with respect to solids content or with ca = hold of the active substance (= AS), this refers to the state of aluminum silicates achieved by single-part drying at 8C'O ° C. During this drying, both the adjoining and bound water is practically almost completely removed.

Alumini.jumsilicates can be used as natural products or poppies as synthetically produced products, with synthetically manufactured products being preferred. Pro = production of these can take place, for example, by the reaction of silicates soluble in water with aluminates soluble in water in the presence of water. For this purpose, the aqueous solutions of the starting materials may be mixed with each other or one of these components in the solid rock may be mixed, i. rea = speak with another component found in the aqueous solution. However, by mixing both these components in a solid state and in the presence of water, the desired aluminum silicates are obtained. they can also be reacted with Al (0H _P ),

A1 ~ O, or SiO ^ with alkalisilicates or alkali solutions = k p k aluminates produce aluminum silicates. however, they can be made by other known methods. The invention particularly relates to aluminum silicates having a three-dimensional spatial-lattice structure. Particularly preferred are compounds whose bonding ability bumps 3 millimeters in the range of 100 to 200 mg of OaO / g AS, most commonly at about 100 to 180 mg of CaO / g AS, of the formula i. sas = pan:

0.7 - 1.1 Ka ₂ 0. A1 ₂ O ₅ . 1,3-3,3 Si0 ₂

This summary formula includes two tins of different crystalline '' *. J structures (or their non-crystalline semiconductors),) <o =

ji are also distinguished in their summaries formulas. These are: Ό 0.7 - 1.1 ϊ \ 3ρθ. ^Α · ^ 2 ^Ο 3 . 4.3 - 2.4 SiO ₂ 2) 0.7 - 1.1 Ka ₂ O. ^a ^ 2 ° 3 . 2,4 - • 3.5 SiO ₂

Different crystal structures are visible in the X-ray diffraction diagram.

The crystalline aluminum silicate contained in the aqueous suspension = filtration of the knife was separated by filtration to separate it from the remaining aqueous solution and then dried. Already according to the way ie. us = drying trays The product contains more or less bound water. The aluminum silicates used to prepare the suspension according to the invention need not be dried at all after production; moreover, it is of particular advantage that aluminum silicate, the humidity of which is derived from the production itself, is applied.

-Ί -.-Η The particle sizes of the individual aluminum silicate particles may be different and lie, for example, in the range between: 0.1 / U and 0.1 mm. These data refer to the size of the primary particles, which means the size of the particles during deposition and, if appropriate, after the crystallization that follows. Aluminum silicates with a particle size of at least 80 wt. .5 lie in the range from TO to 0.01 / um, and in particular from 8 to 0.1 ^ um.

orimar =. As a teaching =

..- the order of magnitude is given to aluminum silicones whose ancestral or secondary particles do not lie above 4-5 yum secondary particles are marked. those particles which are only agglomerated by the ornamental particles into evening groups.

». > j, and '», In norlead to the agglomeration of particle particles in the evening of the crack,> the use of aluminum silicates moist from their very beginning to produce sus = pension according to the invention proved particularly suitable, since it turned out that the application of these still wet products almost practically completely prevented the creation of ie. secondary particle formation.

In one embodiment of the invention, which is particularly preferred, powdered zeolite A is used as component A with a particularly defined particle detector.

Any powdered zeolites can be produced according to DE-AS 24 4-7 021, DE-AS 25 17 218, DE-OS 26 52 4-19, DE-OS 26 51 420, DE-OS 26 51 4p6, DE-OS 26 51 437, DE-OS 26 51 44-5 or DE-OS 26 51 485 · They have particle distribution curves as indicated.

In a particular formulation which is given special virtue, a powdered zeolite of type A having a particle size distribution indicated in DE-OS 26 51 435 may be employed.

- '8 ~

Preference is given to a concentration of aluminum silicate, especially dust = caste zeolite A, from AA to 53 wt. 3, in particular from A6 to 52 wt. ·; □ (versus suspension), and maybe more.

Component B (dispersing ingredient) consists of a mixture of at least two different polyglycoleters of fatty alcohols. The mixing ratio of these ooliglycoleters of fatty alcohol = halo can be adjusted as desired.

Preference is given to the mixing ratio, if no more than two ethers of fatty alcohol are used, 7: 5 to 2: 3, which means 7 parts of ether a) to 3 parts of ether b) to 2 parts of ether a) to 8 parts = your ether ^ b) of formula B.

) \> t '

In one particular embodiment, the combing ratio may be 1: 1.

The concentration of component 3 in the aqueous suspension (relative to the suspension) may preferably be from Ί to 2 wt.%, And in particular from 1, A to 1.6 wt. 0v3 concentration satisfies that one suspension with a solids content of 50% by weight or more is stabilized.

The oronalase slurry has the advantage that it is sedimentally stable in the temperature range of 10 to 50 ° G and is of such consistency that it is pumpable.

It is a further advantage in frictions that component B is liquid at room temperature and does not need to be heated towards frictions.

Of particular advantage is that in suspension according to the invention, substantially higher solids concentrations of up to 53 wt. # relative to zeolites dried at 300 ° G.

In principle, the aqueous suspension according to the invention, except for the aforementioned constituents A and B and, in this case, still residual different substances in the starting massifs with the production of these constituents, 'may contain other constituents in relatively small quantities. If the envisioned prerada a longer suspension in sredszva with washing and cleaning, onda in with respect ADVANCED = term expedient matter ^- like the TAKVA matter Koje su po = Early Kao Ingredients in assets Z3 washing and cleaning.

One starting point about the stability of a suspension according to the invention provides a simple test in which the aluminum silicate suspension is produced at the desired concentration and which contains the dispersing agent according to the invention and in da = ton the case of other substances, for example constituents, "->>

u plowing agents such as hundred., ge to centa n atriumfcriphosphate,> and in varying amounts. The effect of added substances can be viewed visually by the suspension deposition process. After 24 hours of aging, the suspension should generally be suspended so that the top layer of clear free solution (anger of silicate particles) is not greater than 20, not more than 40%, and in particular, not more than 6% of uku = ones. height. In the general case, the amount of additional substances should be kept to a minimum so that the suspension can be pumped 42 or 24 hours, especially 24 hours, and especially after 4-8 hours of standing (standing still), with the help of tubes and intestines. in re = zervosr. The sedimentation behavior of the suspension, which in this case contains other ingredients, is tested at room temperature with a total suspension height of 40 cm. It can be pumped seamlessly even after 4 or 8 days. Cvi's suspension stability data, however, only half know; it depends on each case what kind of suspension stability is to be adjusted. If the suspension according to the invention is used as a reserve of the suspension and the towers will for a long time be stored in a reservoir from which the cum will be further separated, if necessary, then ds may be expedient to share the other ingredients. . maintains or lowers the detergents and cleansers.

The slurry is also produced by simply mixing its ingredients, making the aluminum silicate insane. as ta = kvi or in d:; in this case, wet from the production itself, that is, in aqueous suspension, they add. Of particular advantage is that if there are still governmental aluminum silicates, whose humidity is = due to s me production, what can ds be even? nai. in the form of filter cake, the component 3 is mixed.

It is understandable that dry alumina = those, which are released from adhering water but which still hold bonded water, can also be used. \ v '

The suspension according to the invention is characterized by its high stability. In the lower temperature range, it has a low viscosity, which is much lower than the viscosity of known suspensions. In this case, the reopex behavior of the liquid suspension according to the invention is greatly improved (increased) and the stabilized learning effect is particularly significant for alu minium silicates with particle sizes of 5 to 50 / Um. It can be pumped in such a way that it is easy to handle with wet aluminum silicates. even after long breaks in the pumping process itself, the suspension can still be pumped seamlessly. Due to its high stability, the suspension can be transported with conventional tanks and tanks without the risk of creating unusable or disruptive deposits. thus the suspension is extremely advantageous as a form of aluminum silicate delivery e.g. manufacturer of detergents.

£. H?

The slurry should be stored at tight temperatures and at elevated tempera- tures or other forging by suspending the slurry to terpenatures - which is especially at room temperature, or by means of pipelines and then transported by pipeline. Usually, the temperature between room temperature is not recommended - and about pO ° C.

The ore suspension of the invention is particularly suitable for further use in the appearance of dry, bulk or spray products, for example, for the production of powdered water contaminants, for example by spray drying. but this is a suspension of irreplaceable ⁰ : significance in the manufacture of powdered detergents. This does not create any sediment that would make it difficult to put the aqueous suspension in the apa = drying rinse. It has further been argued that it is also possible to apply susoensisation of the invention to the processing of products which are absolutely anger of the urine.

Starting from its remarkable stability, the suspension according to the invention can be exemplified as such, which means anger further processing with or without other additives for washing, bleaching and / or cleaning, for example as a water softener, detergent or cleaning agent, and in particular as a liquid cleanser with increased suspension stability.

a particularly significant application of the suspension is its further processing into detergents and dry-cleaned, spray-dried bulk, which, in addition to the constituents of the suspension with =, hold other compounds.

The slurry according to the invention is particularly suitable for the manufacture of powder detergents for washing and cleaning.

ϋ The production of these agents is based on the aqueous, liquid rotation of certain constituents of this agent and then it

- - '12 translated into bulk products. In this case, the pores of the defined aluminum silicates are used in the form of a suspension according to the invention. The suspension according to the invention can be optionally, according to already known caveats, solid, flowing conditions. manufacturing detergent products and continue to process cleaning.

of these detergents being mixed with the reservoir suspension, mixed with the substance of washing

In the manufacture of powders, sanding and scrubbing, the process according to the invention is particularly slow, for example with at least one tool having a cleansing effect on the oreoarate;

and after that, the mixture is then transformed into a powder product by one desired shot. The advantage of im3 adding a means of creating complexities, ie. a compound which, as a metal ion of earth-alkaline metals, participates in the formation, hardness of water and _v ', especially the magnesium ions of magnesium and calcium, - which can form complexes.

There are various options for the production of detergents and cleaning agents. Thus, for example, the suspension according to the invention can be combined with substances capable of binding crystalline water. This is purposefully done by suspending =? zia is sprayed onto a compound capable of binding the crystalline water contained in one blender so that, with constant stirring, they form one solid, seemingly dry product. In the first instance, the suspension according to the invention of meat with at least one compound is effective for washing, bleaching or cleaning = because it is slurry-shaped and then spray-dried. This was further demonstrated by the surprisingly surprising aluminum silica suspension, which is the subject of protection. Namely, the suspension of the invention according to the invention in the spray drying process yields products with very little dust. The products obtained by spray drying have a very high calcium binding capacity and ripple very well k · ~ 13 _ ·

Washing agents manufactured using the above description = suspensions may - may have a very different composition. In the general case, they contain at least one solution belonging to water = no surfactant not found in the dispersing agents of the invention, which are present in the aluminum silicate suspension whose protection extends, - in addition to at least one other compound, organic or non-organic, which has the effect of washing or scrubbing, they also contain one as pre-defined alu = minium silicate, as a calcium-binding compound. In addition, such preparations may be found in preparations of this type, usually in small quantities, auxiliary or additional ingredients.

Examples. Λ, * ^v '• one zeolite is produced first — A filter cake according to DE — OS 26 54 4-85 · At friction age, powdered zeolite type A has a specified particle spectrum.

The Zeolite-A filter cake (component A) is then mixed with one disolver and then heated in a 50 l = t container to a temperature of 4-5 ° C. Stabilis = zator (component 3) is then inserted into this for a period oa 1; minutes with MIG meat = face at 75 ^- 76 rpm, with the temperature of this solution rising to p0 ° 0.

K- = o stabilizer (component 3) The following substances are used ^ The turbidity points of these stabilizers are determined according to DiN 55 947, butyldiglycol side p, item 8.2 40.5 in 25% solution = (3DG solution).

4. Ethoxylate A isotridecylalcholethoxylate 5 mol EO Turbidity point 58 ° G Hardening point 0 and 4 ° C Viscosity r.a p0 ° 0 47 - 4 m dogs

Density ns 5O ° O 0.95 g / ml

2. Ethoxylate 3

Isotridecylalcholethoxylate 5 moles EO Turbidity point 57 ° O Curing point —24 and 4 ° q Viscosity 50 ° G 24 and 4 m dogs

Density at 50 ° 0.95 g / ml

3. Ethoxylate C

Isotridecylalkoxolate 6.5 mol EO Blurring point 67 ° G Curing point —42 - 4 ° G Viscosity at 50 ° G 24 - 4 m ours

Density at 50 ° C 0.97 g / ml

4 _e Ethoxylate D

Isotridecylcholethoxylate 6.75 moles EO Turbidity point 68 ° G Curing point —4 - 4 ° G Viscosity at 50 ° C 22 and 4 'm dogs

Density at 50 ° G 0.97 s / ml

... -151->. Ethoxylate E

Isotridecylalkonolethoxylate 8 moles Ξ0 Blurring point 75 ° O Hardening point +12 - 4 ° G škoiscoat at 50 ° G 23 m

Density at ρ0 ° 0 0,93 g / ml: sil £

Isotridecylalkonolethoxylate 3 moles TD Torture point 74 ° C Cure point —or - 4 ° C Viscosity at 50 ° G 24 - 4 m dogs |

Density at 50 ° C 0.97 g / ml

For comparison purposes, additional comparisons with the following isotridecylalcholethoxylates were made. These experiments are ethoxylates ^ 3 Z, * all of which are from ethoxylstates applied to the invention prior to their degree of ethoxylation and at their point of torture:

7. Ethoxylate G

Isotridecylalkonolethoxylate 6 moles EO Turbidity point 63 ° G Hardening point 5 - 4 ° C Viscosity at 50 ° G 18 - 4 m dogs Density at 50 ° G 0.96 g / ml

8. Ethoxylate H isocridecylalkolexoxylate 5 moles EO ''

Blurring point 64 ° C Hardening point —14- - 4- ° C Viscosity at 50 ° G 20 - 4 n dogs

Density at 50 ° C 0.93 g / ml

9. Ethoxylate I

Isotridecylcholethoxylate 3 mo is TO Turbidity point 3S ° 0 Hardening point —8 and 4 ° 0 Viscosity at 50 ° G 12 - 4 m dogs Density at 50 ° C 0.92 g / ml

10. Ethoxylate K

Isotridecylalcholethoxylate 3 moles EO Turbidity point 34- ° C Curing point - 25 ° C Viscosity at 50 ° C 15 - 4- m dogs Density at 5 ° 0 0,90 g / ml

11. Ethoxylate L

Isotridecylalkoxy ethoxylate 9 moles EO Blurring point 78 ° 0 Curing point + 2 - 4- ° G Viscosity at 50 ° C 27 and 4 m dogs

Density at 50 ° C 1.0 g / ml

The resulting suspension is evaluated, after prolonged storage at constant temperature, with respect to the clear phase above the same solid, homogeneity, fluidity and precipitate. The results are given in the following tables:

Examples 1 to 10 are examples according to the invention.

Stabilizer 1. composition 200g ethoxylate A + D 2. composition 200g ethoxylate B +: Concentration 1.5 # 1.5% The mixing ratio 1: 1 1: 1 You store the temperature melt 22 ° 0/45 ° G 22 ° C / 45 ° C Aging time 3 days 3 days Clear phase mm 0/0 1/1 Homogeneity,? i 1/1 '^ 3 / ¼ Rheological properties 1/1 2/2 Sludge mm 0/0 0/0 Stabilizer 3- composition 50 kg epoxylate A + D 4. composition 50 epoxylate

Concentration 1.5%

Mixing ratio 1: 1

Storage temperature 22 ° 0 Maturation time 3/7/10/14 days

Clear phase mm 0/0/0/0

Homogeneity 1/1/1/1

Rheological Properties 1/2/2/2

Sediment nm 0/2/2/2

1.5% 7: 3

22 ° C / 45 ° 0 3 days 0/0 2/1 2/1 1/0

Stabilizer

5 · θ.

composition 5θ kg composition JO kg epoxylate E + G epoxylate B + G

Concentration 1.5% 1,2 '3 The mixing ratio 1: 1 1: 1 Storage temperature 22 ° G / 45 ° C / 8 ^O G 25 ° C Aging time 3 days 7 days Clear phase mm 0/0/0 0 Homogeneity 1/2/1 2 Rheological properties 1/1/1 2 Sludge mm 0/0/0 0 Stabilizer 7. composition 200g epoxylate B + G С. composition 200 g epoxylate B + G Concentration 1.5% -1.5 85 The mixing ratio. i 6: 4- . 4: 6 Storage temperature 22 ° C / 4-5 ° G 22 ° C / 45 ° G Aging time 3 days 3 days Clear phase mm 2/3 1/3 Homogeneity 2/2 2/2 Rheological properties 1/1 1/1 Sludge mm 0/0 0/2 Stabilizer 9. composition 200 g epoxylate B + G 10. composition 200 g epoxylate B + G Concentration 1.5% 1.5% The mixing ratio 3: 7 2: 8 Storage temperature 22 ° G / 4-5 ° G 22 ° G / 45 ° G Aging time 3 days 3 days Clear phase mm 0/2 0/2 Homogeneity 1/2 1/1 Rheological properties 1/1 1/1 Sludge mm 0/0 0/0

Examples of. 11 to 22 are consecutive ornaments:

Stabilizer 11. composition 200 g ethoxylate A + I 12. composition 200 g ethoxylate A + G Concentration 1.5% 1.5% The mixing ratio 1: 1 1: 1 Temperature stores moans 22 ° G 22 ° C / 45 ° G Delay time 3 days 3 days Clear phase mm 3 2/2 Homogeneity 5 4/4 Rheological properties 5 4/4 Sludge mm - 0/2 Stabilizer 13. composition 200 g ethoxylate G + D 14. composition 200 g ethoxylate D + E Concentration , 1.5Ч ,. J, 5 * The mixing ratio 1: 1 1: 1 Temperature stores wicks 22 ° C / 45 ° C 22 ° C / 45 ° G Delay time 5 days 3 days Clear phase mm .3 / 1 4/2 Homogeneity 4/3 4/3 Rheological properties 4/2 4/2 Sludge mm 15/2 0/0 Stabilizer 15 · composition 200 g ethoxylate H + L 16. composition 50 kg ethoxylate B + L Concentration 1.5 1,5 P The mixing ratio 1: 1 1: 1 Temperature stores .show 22 ° C / 45 ° 0 22 ° G / 45 ° G Delay time 3 days 3 days Clear phase mm 6/2 2/5 Homogeneity 4 / p 3/3 Rheological properties 4/2 3/4 Sludge mm 1/3 20/20

Stabilizer 17. composition 200 g ethoxylate G 18. composition 200 g ethoxylate A Concentration 1,4 / 1,5 P The mixing ratio Storage temperature 22 ° G / 45 ° 0 22 ° 0/45 ° 0 Aging time 3 days 3 days The clear phase of it 4/4 5/5 Homogeneity 4/4 5/5 Rheological properties 4/4 5/5 Sludge mm 2/2 - / -

Stabilizer η o composition 200 g ethoxylate B 20. composition 200 g ethoxylate D Concentration 1.5% 1.5% Storage temperature 22 ° G / 45 ° G 22 ° G / 45 ° G Aging time 3 days 3 days Clear phase mm 4/4 5/2 Homogeneity 5/5 5/3 Rheological properties 5/4 5/3 Sludge mm - / o 2

Stabilizer 21. composition 200 g ethoxylate 3 22. composition 200 g ethoxylate F Concentration 1.5 ' 1,5 y Storage temperature a 22 ° G / 45 ° G 22 ° C / 45 ° G Aging time 3 days 3 days Clear phase mm 3/3 5/5 Homogeneity 4/4 4/5 Rheological properties 4/4 4/5 Sludge mm 3/12 0 / -

Viscosity

Non-phenolethoxylator stabilized suspension according to DS — OS 52 09 631, Examples 25-2p, has a viscosity

on 22 ° 0 from 288 m dogs on 16 ° C from 766 m dogs on 1O ° O from 1688 m dogs Suspension according to the invention according to 5 of the front invention there is viscosity on 7 ° C from 14-3 m dogs on 25 ° C from 14-6 m dogs on 10 ° 0 from 173 m dogs

Almost no viscosity change was noted.

Result:

The suspension according to the invention has, with many advantages, significantly lower viscous tethers, in comparison with the prior art.

Of particular advantage is the low viscosity. Even at low temperatures, it remains almost unchanged.

SPECIFICATION OF THE BEST MODE FOR ECONOMIC USE OF FINDING

Ethoxylate A with the characteristics described in the description after heating with the solvent is heated in a 50 liter vessel, 45 ° C. Ethoxylate D is mixed into this with the characteristics described in the description for 15 minutes with a 7576 rpm MIG stirrer, whereby the temperature of this solution rises to 50 ° C.

The total amount of the composition is 200 g and has the following characteristics:

concentration of 1.5%; mixing ratio 1: 1; storage temperature 22 ° C / 45 ° C; aging time of 3 days; clear phase mm 0/0; homogeneity 1/1; rheological properties 1/1; precipitate mm 0/0.

Claims (1)

Patent claims A process for the production and stabilization of an aqueous suspension of type A powdered zeolites having 35 to 60% by weight <3 jum, 82 to 95% by weight and cha <5 vm, 93 to 99% by weight <. 10 pm and 96 to 100 wt% of a particle <15 μm, which is added to this suspension, which is in the form of a filter cake containing water, with continuous stirring at a temperature of 45-50 ° C, a stirring speed of 75-76 rpm and turbulent flow expressed by Newton's numerical code less than 5 with an average mixing time of 15 minutes and maintaining the suspension viscosity at 50 to 2000 mPas, as a stabilizer of 0.5 to 6% by weight of a mixture of at least two different polyglycoleters of fatty alcohols based on isotridecylalcohol or aliphatic C ^ -al copolymer and ethylene oxide, wherein one pol and gl and col ether of fatty alcohols has the following characteristics: 4.5 to 5.5 E0, the turbidity point according to DIN 53 917 is 56 to 60 ° C, the curing point is at +4 to -25 ° C, the viscosity at 50 ° C is 13 to 28 mPas, and the density at 50 ° C is 0.94 to 0.96 g / ml, while the second polyglycoleter of fatty alcohols has the following characteristics: 6 to 8 E0, turbidity point according to DIN 53 917 is at 66 to 74 ° C, point hardens it is at + 12 to -16 ° C, the viscosity at 50 ° C is 18 to 28 mPas and the density at 50 ° C is 0.96 to 0.98 g / ml .., and the ratio of said first and second polyglycoleters in the mixture is 7: 3 to 2: 8.