CS274073B1 - Multi-component defoamer - Google Patents

Abstract

The defoamer is on a base of oxygenic and partly azotic organic compounds. It consists of 25 to 89.8 % by weight of the product of polyaddition of at least one alkylene oxide C2 to C4 to bivalent to hexavalent aliphatic alcohol (diol C12, trimethylolpropane, glycerol, pentaerythritol, dipentaerythritol), 0.01 to 4 % by weight ethylene-bis-alkylamide of at least one carboxyl acid C8 to C22 or alkaline salt (sodium, potassium, calcium) of carboxyl acids C8 to C21. The residue to 100 % is formed by at least one aliphatic alcohol C2 to C12 (C4 to C12) or mixture of alcohols with other oxygenic organic compounds. The defoamer is especially suitable for defoaming in sulphite, such as Mg-bisulphite cellulose plants in the paper industry.

Description

The invention relates to a multi-component defoamer mainly based on oxygen and optionally also nitrogenous organic compounds, particularly suitable for defoaming or preventing the formation of foam in the pulp and paper industry.

More recently known are antifoams based on oxygen-containing organic compounds containing carboxyl or hydroxyl functional groups in the molecule. Such are at least partially esterified polyols, e.g. partially esterified glycerol, sorbitol and pentaerythritol (U.S. Pat. No. 3,235,498), further stearic and methacrylic acid defoamers (U.S. Pat. No. 3,458,567). Organosilicon compounds such as polymethylsiloxane, polyethylsiloxane and others are particularly important but expensive (Tichomirov VK: Foams, Khimija Moscow (1983)). The technically available products include the oxyethylation products of abietic acid and oleic acid, respectively. tall oil oxyethylation, as well as oxyethylation or propoxylation products of 4 to 25 carbon atoms with 1 to 25 moles of alkylene oxide alone or more often in combination with organosilicon compounds (U.S. Pat. Nos. 2,991,248, 3,235,501 and 3,235,502). Relatively widespread are antifoams based on poly-component mixtures (U.S. Pat. No. 2,923,687), 3,180,836 and MS. in which the major components are higher fatty acids, vegetable and mineral oils and polyaddition products of alkylene oxides to higher fatty acids or alcohols. The antifoam is also known (U.S. Pat. No. 3,697,438) for oleic acid polyglycol esters in admixture with C C-C ^g alcohols, propylene glycol, isopropyl alcohol and mineral oil. Their advantage is nontoxicity, but the drawback is relatively lower antifoaming efficiency. Higher antifoam efficiency on foams produced mainly by non-ionic and anionic surfactants has a defoamer based on 50-99 wt%. % hydrocarbons and 1 to 20 wt. of oxygen-containing organic compounds (cf. author's certificate 232 390), requires all components of relatively high purity and, moreover, is less effective for defoaming of the pulp and paper industry. The multipurpose defoamer according to U.S. Pat. 264 733, consisting of 90 to 99.8 wt. at least one polyaddition product an alkylene sulfoxide C ₂ to C ₄ monovalent to hexavalent aliphatic alcohol to C ₂ to C ^ g and / or copolymers of alkylene oxides and C _2, and 0.2 to 10% by weight. ethylene bis-alkyl amide of at least one carboxylic acid CJG to C _2Q.

The disadvantage, however, is the low solubility of ethylene-bis-alkylamide in said environment, which is unfavorable in particular at temperatures of about 0 ° C and lower temperatures, high viscosity at temperatures below 20 ° C, as well as low efficiency for defoaming of the paper and pulp industry.

However, according to the invention, multiple component defoamer mainly based on the oxygenated organic cal compounds, such as fatty alcohols, and mixtures of ňalšími oxygenated organic compounds, of products of polyaddition of at least one alkylene C ₂ to C ^ at least one divalent to hexavalent aliphatic alcohol C ₂ to C ₂₂ and ethylene bis-alkyl amide of at least one carboxylic acid C _g to C ₂₂ and / or at least one alkali salt of a carboxylic acid, Cg to C _21, characterized in that it comprises from 25 to 89.8 X by weight. polyaddition products of an alkylene oxide of at least one C ₂ and the divalent to hexavalent alcohol C ₂ to C _22, from 0.01 to 4% by weight. ethylene bis-alkyl amide of at least one carboxylic acid, Cg and C ₂₂ and / or the alkali salt of the carboxylic acid to ^C 21 -C .Zvyšok 100 X is at least one aliphatic alcohol, ^C 2 ^{to C} 12 or a mixture of alcohols and other oxygenated organic compounds, and / or auxiliary substances.

The advantage of the antifoam according to the present invention is low viscosity even at lower temperatures, high efficiency mainly for antifoaming leaders of the pulp and paper industry, which increases with temperature. Furthermore, good shelf life and applicability even at reduced temperatures, reproducibility of effects and good pumpability also at temperatures below 0 ° C

CS 274073 Bl

The product of polyaddition of at least one alkylene oxide _{of 2} to C ^ C, such as ethylene oxide, propylene oxide, epichlorohydrin, butene oxide, and isobutylene oxide to a divalent to hexavalent aliphatic alcohol, the addition products of copolyaddition or the trimethylolpropane, glycerol, pen taerytritol, dipentaerythritol, xylitol and sorbitol. The average molecular weight of the products of such a polyaddition or copolyaddition is 1000 to 5000 g / mol. most preferably in the range 2000 to 3500 g / ml.

As aliphatic alcohols, C ₂ to C 6 primary alcohols are most suitable, but secondary alcohols are also useful. For technical safety reasons, they are preferable to ethanol, propanol and 2-propanol, butanol and higher alkanols. For this reason, but also knowing the higher contribution of the alcohol component to enhancing the antifoam effect of the multi-component antifoam and the technical availability are even more desirable, mainly alcoholic shots from oxoprocess as a light fraction but also heavy fraction (distillation residue) from 2-ethylhexanol rectification, furthermore mixtures of butanol and isobutanol and other admixtures of oxygen-containing organic substances such as aldehydes, ketones, acetals, ethers and esters, from the butanols oxosynthesis process and 2-ethylhexanol from propylene, carbon monoxide and hydrogen.

Furthermore, an alcoholic by-product from the catalytic oxidation of cyclohexane to cyclohexanol and cyclohexanone containing a mixture of aliphatic alcohols C 1 to C 4, in particular amyl alcohol

By analogy, it is also possible to use predominantly alcoholic products from other petrochemical processes, such as from the approval of alcohols, from the synthesis gas hydrocondensation, isosynthesis, and the like.

Ethylene bis-alkyl amides are formed by condensation of 1,2-diaminoethane (ethylenediamine) with saturated carboxylic acids ΰθ to C _22, most preferably, however, the acid C ₂ to C ₉ produced either synthetically, such as oxydation of paraffins, olefins or hydrokarboxyláciou hydrokarboxyalkyláciou alkenes followed by by hydrolysis or from natural raw materials, such as from vegetable and animal fats by hydrolysis of glycerines, optionally with saponification and subsequent liberation of acids from their alkali salts by mineral acids and the like.

Although unsaturated carboxylic acids (oleic acid, linoleic acid, linolenic acid, etc.) may have a similar origin, they are obtained, on an industrial scale, mainly from vegetable oils by similar procedures, as well as saturated carboxylic acids.

Sodium and potassium salts are most suitable as the alkali salts of said carboxylic acids, but magnesium and calcium salts are particularly useful at lower concentrations.

The stated limits of 0.01 to 4% must be observed. At a concentration of less than 0.01% by weight. ethylene - bis - alkyl amide is its contribution to the effectiveness of the defoaming viackomponent Joint defoamer _and a low P content of _R 4 and X wt. hardly any quantitative ethylene-bis-alkylamide dissolves, such a defoamer is difficult to pump and contaminates the foamed system. Moreover, it no longer contributes to an increase in antifoaming efficiency.

Possible excipients are bactericides, fungicides, herbicides, corrosion inhibitors, pigments, dyes, optical brighteners, fragrances and emulsifying agents.

Further data on the formulation of the multi-component antifoam according to the invention, their efficacy as well as other advantages are evident from the examples.

CS 274073 Bl

Example 1

The foaming products of the polyaddition of at least one C ₂ -C ₂ alkylene oxide to a trivalent to hexavalent aliphatic alcohol are investigated. Specifically, the product of polyaddition of propylene oxide to trimethylpropane-polyetherpolyol (Slovaprop TMP-48) having an average molecular weight of 3200 g.mol ^-1 . Furthermore, a block polyaddition product of 88% propylene oxide and then 12% ethylene oxide to glycerol polyetherpolyol (PEEP) having an average molecular weight of 3000 g.mol * ¹ . Then the product of polyaddition of propylene oxide to pentaerythritol with a content of 11.5 wt. dipentaerythritol with an average molar mass of 3800 g.mol ^-1 (POP) and a polyaddition product of butylene oxides (a mixture of 1,2-epoxybutane with 2,3-epoxybutane mol. 1: 2) to trimethylolpropane with an average molar mass of 1800 g.mol ^-1 ( BP).

The other component consists of ethylene-bis-alkyl amide of at least one carboxylic acid to 0θ ^ 21 ^'Konk labial, ethylene-bis-kaprylamid (EBKA), ethylene-bis-laurylamide (EBLA), ethylene-bis-stearylamide (EDSA) and finally a mixture of ethylene bis-alkylamides formed by condensation of a mixture of unsaturated and saturated acids (acids: palmitic λ / 4%; stearic and 2%; oleic rsz 60%; linoleic 20%; linolenic 10%; eicosene 2%; erucic λ / 2%) with ethylenediamine ( 1,2-diaminoethane), hereinafter referred to as EBAZ.

The other components to be tested are the alkali salts of carboxylic acids C 8 to C ₂ P such as potassium 2-ethylhexanoate, sodium laurate and potassium laurate, sodium stearate, potassium palmitate, sodium palmltate and a mixture of sodium salts of unsaturated and saturated acids formed by alkaline saponification of rapeseed oil. ^C 22 ^-C i6 ^ ^'as calcium (Ca-stearate.

In addition, light fractions falling off during the rectification of 2-ethylhexanol in oxoprocess, hereinafter referred to as 2 EHLP, represented a mixture of n-butanol with diisobutyl ether and di-n-butyl ether totaling 51.7% by weight, 20.7% by weight. isobutanol, 4.1% wt. isoamyl alcohol, 4.1% wt. Of 3-heptanone, 2.1 X wt. ester mixtures, 2 X wt. 2-ethylhexanal and 15.3 wt. 2-ethylhexanol.

Then the heavy sludge from the rectification of 2-ethylhexanol (2EHTP), i.e. the distillation residue (distilling off 86 X as a fraction in the range 184 to 285 ° C) from the rectification of crude 2-ethylhexanol, constituted by X. OH = 12.9; bromine number = 4.7 g Br / 100g; acid number = 0.9 mg KOH / g; saponification number = 22.1 mg KOH / g; 2-ethylhexanol = 36.3% by weight; dodecanol vrátané ^C 12 diols X = 44.1 wt .; butyroaldehyde diisobutylacetal = 0.7 wt. and a further 7 oxygenated organic compounds at a concentration of 1 to 6% by weight; average molecular weight = 190 g.mol ^-1 ; density at 20 ° C = 901.9 kg.m ^-3 ; = 1.4530.

Mixture of alcohols and other oxygenated organic substances distilled from waste streams of butanols and 2-ethylhexanol (referred to as STRIPOL), containing 45,8% by weight π-butanol; 35.7 wt. isobutanol; 4.3 wt. % n-butyraldehyde 1.5 wt. isobutyraldehyde du; 4.9 wt. toluene; content of nitrogen and other unidentified organic compounds = 0.4% by weight and water = 7.4 X wt.

Then the leading alcoholic by-product, hereinafter referred to as FK-102, from the catalytic oxidation of xyclohexane to cyclohexanol and cyclohexanone, isolated by rectification of the predominantly cyclohexanol / cyclohexanone mixture. It is a colorless liquid in which 93,9% distilled in the temperature range 92 to 142 ° C / 101 kPa; density at 20 ° C = 855 kg.m ^-3 ; OH = 14.3% by mass; acid number = 0.95 mg KOH / g; saponification number = 36 mg KOH / g; CO = 1.6 wt%; amyl alcohol - 51.9% by weight; n-butanol = 9.5% by weight; isobutanol = 5.6 wt%; check. butyl alcohol = 1.1 wt%; cyclohexanone = 19.7% by weight; cyclopentanol = 8.1 wt%; % cyclopene tannone = 4.7 wt. and water = 3.6% by weight. About 1 wt. they are still admixtures of cyclohexane,

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CS 274073 B1 cyclohexene and cyclohexanol.

Known bactericides and fungicides (cumylphenol, a product of the condensation of ethanolamine with formaldehyde), fragrances, corrosion inhibitors, pigments and dyes are added as adjuvants in some antifoam formulations.

The foaming efficiency of individual formulated samples of a multi-component defoamer is determined by comparing the foaming of the standard sample with that of the standard sample with added defoamer.

Thus, 100 cm @ 3 of an aqueous solution of standard sodium lauryl sulfate (anionic surfactant) at a concentration of 0.1% by weight. (1 g.dm ”· ⁵ ) or polyethoxylated C ₁₂ to ^C 14 ⁵ primary alcohols with ⁹ moles of ethylene oxide (non-ionic surfactant) or laurylammonium bromide (cationic surfactant) of similar concentration is carefully poured into a graduated cylinder of 500 cm ^ and closed with a ground glass joint. stopper. The standard solution is foamed by rotating the cylinder by 180 ^° and sleeping 50 times for 1 min at 20-2 ° C. Measure the height of the foam and the height of the non-foaming solution after 1 · min after completion of the foaming. Then, the foaming power of the standard PS (X) is calculated from the relationship PS =. 100, in which a = height of the foam (cm), b = height of the non-foamed solution (cm) b

The antifoam efficiency is determined by the same procedure as the standard solution, but to a 100 cc of the ⁵ standard solution is added 1 drop (0.02 g), respectively. 2 drops (0.04 g) of antifoam and set to Po (foaming of standard solution / antifoam). Finally, the foaming efficiency is calculated from the foaming versus foaming efficiency graph (X), with the foaming efficiency (X) from 100 to 0 and the foaming axis (X) of the standard solution being plotted on the x-axis. At the intersection point of the diagonal, the X of the antifoam efficiency is read, taking the arithmetic mean of the three measurements as the final result.

The composition of the individual antifoam samples and their antifoam activity on the nonionic (nonionic) as well as the anionic and cationic surfactant is evident from Table 1.

Example 2

The antifoaming effect of the antifoams is measured using a Kirchner laboratory apparatus. The method of measurement is based on the principle of liquid whipping, i. while mixing the liquid, air is supplied through a nozzle located just below the stirrer blades. Laboratory experiments are performed) under constant conditions (volume of test liquid, mixing time, volume of blown air, temperature of the liquid). The vessel in which the measurement is made is calibrated and the antifoam effect can be read immediately after the experiment. The antifoam is added using a syringe and the amount is controlled with an analytical balance.

Washing water from the first washing stage of unbleached Mg-bisulfite pulp is used as a foaming liquid. Washing water with pH 3,5 and dry matter 11 - 1 X wt. is diluted 1: 10, ie 1 part of wash water and 10 parts of water with a hardness of ³⁰ German. Dilution of the wash water is done to achieve the maximum foaming achieved at this dilution ratio.

A new measured amount of foaming liquid is used for each frothing efficiency measurement.

CS 274073 B1 i

Table 1

Composition of defoamer De - foaming efficiency (%) on the: component Quantity (% by weight) cationic surfactant anionic surfactant nonionic surfactant X 2 1 2 1 2 drop haste. haste. haste. haste. haste. 3 b C D e F 0 h Slovaprop TMP-48 itself 100 87 97 51 58 2 21 n-Butanol 20 Slovaprop TMP-48 79.6 88 100 67 87 84 94 EDSA 0.4 n-Butanol 20 Slovaprop TMP-48 79.6 84 100 56 79 72 90 EBAZ 0.4 n-Butanol 20 Slovaprop TMP-48 79.6 89 100 59 84 75 91 EBLA 0.4 n-Butanol 20 Slovaprop TMP-48 79.6 82 99 56 75 72 90 EBA 0.4 2EHLP 20 Slovaprop TMP-48 79.6 100 100 91 96 80 94 EDSA 0.4 n-Butanol 20 Slovaprop TMP-48 79.8 98 100 86 92 58 68 EDSA 0.2 2EHLP 20 Slovaprop TMP-48 79.8 98 100 94 97 74 83 EDSA 0.2 n-Butanol 20 Slovaprop TMP-48 79.9 99 100 77 87 71 84 EDSA ABOUT,]. 2EHLP 20 Slovaprop TMP-48 79.9 100 100 78 97 90 94 EDSA 0.1 2EHTP 20 Slovaprop TMP-48 79.9 100 100 78 97 91 94 EDSA 0.1

CS 274073 Bl

Tab. 1

and b C D e F 0 h n-Butanol Slovaprop TMP-48 EOSA 40 59.6 0.4 94 99 81 87 64 70 2EHLP Slovaprop TMP-4B EDSA 40 59.6 0.4 100 100 93 97 81 89 n-Butanol Slovaprop TMP-48 EOSA 40 59.8 0.2 98 100 81 86 64 70 2EHLP Slovaprop TMP-48 EOSA 40 59.8 0.2 100 100 93 96 79 91 2EHLP Slovaprop TMP-48 EOSA 40 59.9 0.1 99 100 89 ' 91 66 86 2EHLP Slovaprop 40 60 88 98 69 77 53 66 FK-102 itself 100 33 72 22 45 27 45 FK-102 Slovaprop TMP-48 EDSA 40 59.8 0.2 100 100 86 B9 57 72 FK-102 Slovaprop TMP-48 EDSA 40 59.6 0.4 100 100 95 97 65 87 2EHLP Slovaprop TMP-48 Ca-stearate 6.00 g 3.85 g 0.15 g 92 100 86 92 88 91 FK-102 Slovaprop TMP-48 Palmitan soda 40 59.6 0.4 98 100 89 95 73 · and FK-102 Slovaprop TMP-48 Palmitan soda EDSA 40 59.6 0.3 0.1 100 100 B9 96 85 97 j 1 FK-102 Slovaprop TMP-48 Lauran soda EOSA 40 59.8 0.1 0.1 99 100 85 93 79 89

CS 274073 81 continued tab. 1

and ‘B C D e F g  h FK-102 Slovaprop 1MP-48 Na-salt of EBKA 40 59.7  0.1 0.2 98 100 B6 94 81 92 2-ethylhexanol PEEP EBAZ 4-cumylphenol 50 48.6 0.2 0.2 97 100 83 92 72 91 ethanol Slovaprop TMP-48 20 80 71 92 62 68 26 46 ethanol Slovaprop TMP-48 POP EBA 50 30 29.8 0.2 96 100 80 91 51 70 n-Butanol SlovapropTMP-48 EOSA 60 39.6 0.4 92 95 68 79 45 52 Strip Slovaprop TMP-48 EDSA The product of the condensation of monoethanolamine with CF 4 O 20 79.4 0.4 0.2 100 100 82 83 54 62 2EHPP Slovaprop TMP-48 EDSA 20 79.8 0.2 72 96 72 84 47 53 2EHTP Slovaprop TMP-48 EDSA 20 79.2 .0.8 100 100 78 86 61 77 2EHTP Slovaprop TMP-48 20 BO 87 98 52 72 27 47

The effect of the defoamer is calculated in X against the amount of foam produced without the use of the defoamer. The foaming effect can also be expressed graphically when the amount of antifoam added in mg / dm ^{3 of} foaming liquid is indicated on the x-axis and the foam formed on the x-axis. To determine the antifoam effect of the antifoam, 3 to 6 measurements are made with a different amount of antifoam in the foaming liquid. A freshly diluted liquid is prepared for each series of measurements.

Efforts of defoaming efficacy with a defoamer composition (in X mass) are made: 60 X mass. Slovaprop TMP-48, 39.6 X wt. % of n-butanol and 0.4% by wt. EDSA.

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CS 274073 Bl

Measurements at 20 ° C give the following results:

Foam volume without defoamer = 155 cm ⁵ / dm ⁵ = foaming 100 X;

foam volume with 17.5 mg defoamer / dm ⁵ solution = foaming 80.6X;

foam volume with 49.5 mg defoamer / dm ⁵ solution = 54.8 X;

foam volume with 96.5 mg defoamer / dm ⁵ solution = 12.9X;

foam volume with 155.5 mg defoamer / dm ⁵ solution = foaming 0.0X.

With the same antifoam and a foaming solution of similar composition at 60 ° C, the foam without antifoam is 200 cm / dm, ie 100X; foam volume with 6.0 mg defoamer / dm solution = 12.5X; foam volume with 8.0 mg defoamer / dm ^{5 of} solution is 15 cm ⁵ / dm ⁵ , ie 7.5%; the foam volume with 13.0 mg defoamer / dm ^{5 of} solution is only a ring around the perimeter of the vessel and the foam volume with 17.5 mg defoamer / 1 dm ^{5 of} solution = 0.0 cm ⁵ / dm ⁵ , ie 0.0 X.

These results indicate that the antifoam efficiency at defoaming at 60 ° C is of the order of magnitude higher than at 20 ° C.

Example 3

The procedure is similar to Example 2 except that the defoamer composition is different. It consists of 79,92% mass. % Of Slovaprop TMP-48, 20.0% π-butanol and 0.08% wt. EDSA. Measurement at 20 ° C gives a foam volume without defoamer = 175 cm ⁵ / dm ⁵ = 100 X; foam volume with 9.0 mg defoamer / dm ⁵ = 150 cm ⁵ / dm ⁵ = 85.7 X; foam volume with 50.0 mg defoamer / dm ⁵ = 105 cm ⁵ / dm ⁵ = = 60.0 X; _t foam volume with 117.0 mg defoamer / dm ⁵ = 80 cm ⁵ / dm ⁵ = 45.7 X; foam volume with 180 mg defoamer / dm ⁵ = 40 cm ⁵ / dm ⁵ = 22.8 X; foam volume with 229.5 mg defoamer / dm ⁵ = with 15 cm ⁵ / dm ⁵ = 8.6 X.

Measurements at 60 ° C give the following values:

foam volume without defoamer = 250 cm ⁵ / dm ⁵ = 100 X;

3 3 foam volume with 10.0 mg defoamer / dm = 60 cm / dm = 24X;

foam volume with 30.5 mg defoamer / dm ⁵ = 25 cm ⁵ / dm ⁵ = 10 X;

foam volume with 81.5 mg defoamer / dm ⁵ = ring around the perimeter of the vessel;

foam volume with 100.5 mg defoamer / dm ⁵ = 0.0 cm ⁵ = 0.0 X.

The comparison shows that the antifoam efficiency at 60 ° C is twice that of 20 ° C.

Example 4

Defoamer consisting of 79.6% by weight. Slovaprop TMP-48, 20 X wt. % of n-butanol and 0.4% by wt. ethylene-bis-stearyl-amide (EDSA) is applied to antifoam in the production pulp, the average capacity of the washing and sorting line being about 10 t / h of pulp. The anti-foaming agent is added during washing and sorting of unbleached Mg-bisulfite pulp to defoamer a suspension having a pH of 3.3-3.5 and a temperature of 30-40 ° C. The antifoam is dosed at 6 dm ⁵ / h using a Jesco Type 45 Diaphragm Metering Pump. The pulp suspension temperature during sorting is 18-20 ° C.

The average consumption of said defoamer is 5.6 kg / t unbleached pulp.

CS 274073 Bl *

Example 5

Progress and defoamer is 25-28 ° C.

Similar to Example 4, only the pulp suspension temperature is 48-50 ° C dosed at 3 dm ⁵ / h. The temperature of the pulp suspension during sorting is

The average antifoam consumption is 2.7 kg / ton of unbleached pulp.

Example 6

The procedure is similar to that of Example 1, except that the composition of the antifoams differs and the properties of the antifoams according to the invention are compared. No. 264,733 and this invention at room temperature (20 ° C). In addition, the product of propylene oxide polyaddition to the distillation residue of the rectification of crude 2-ethylhexanol from oxoprocess (X mass OH = 12.9; bromine number = 4.7 g Br / 100 g; acid number = 0.9 mg KOH) is investigated as a defoamer component. g, density at 20 ° C = 901.9 kg / m ^-5 , average molecular weight = 190, saponification number = = 22.1 mg KOH / g; 2-ethylhexanol = 36.3% by weight, C ₁₂ alcohols included diols = 44.1% by weight, the remainder being acetals, esters and ethers), prepared by an alkali catalysed polyaddition of propylene oxide at a molar ratio of 15: 1. Hereinafter referred to as Slovasol HTP-15.

The results are summarized in Table 2.

In this table the defoamer numbers of samples 1 to 4 are subject to MS. At a high EDSA content, the antifoams have a high antifoam efficiency, but are solid at room temperature. They should be heated to 35-40 ° C for application. However, the antifoam efficiency increases with temperature. These samples 1 to 3 were applied at 35-2 ° C and sample 4 was applied at 30-1 ° C. Samples 5-8 are formulated according to the invention. All are liquid at room temperature. Sample no. 6 was also applied at 35 - 2 ° C for comparison, and the results are clearly shown in parentheses. Thus, the antifoams of the present invention are even more efficient, easily transportable and additionally applicable without pre-heating.

CS 274073 Bl

CM <0

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£ Tax Efficiency £%} to: Cationic surfactant Anionic surfactant Nonionic surfactant CM drops • H ΙΛ Cs 88 SQ THEY ARE 89 US axis os σ Os O r- axis 97 drop JX Q CD .. OO 81 ABOUT US <s oo Γ * what € s OS Os S-Z * 89 KS OS CM drops X 100 Γ- about\ 87 1 axis CD axis axis O O o o s-out 100 100 CH drop cn GO axis OS WHAT SO CD 87 1 r * axis 93 (100) P » axis with axis CM drops «Η I 100 100 KS axis 100 1 100 Z ~ \ pcs rOs Os s_z 100 100 · -1 drop 0) 100 what axis ΙΛ axis axis OS 100 · ζ% ► with pers WHAT WHAT about about R-1 100 F Consistency at 20 ° C Ό tough High viscous to stiff Semi-rigid to stiff semisolid, smeary Liquid, slightly cloudy liquid, weakly cloudy liquid, weakly cloudy liquid Composition of defoamer number hmot.J □ • OO CM σ \ ks r * · »Λ Os o axis O o • e so OS O o CO CM axis ABOUT CO CM Axis O r * cm About CD About CM CM SO «Η O KS M3 CD O CM OS O O * cm O O so Os O O O US <* component JO Slovaprop 48 EDSA Slovaprop 48 EDSA Slovaprop 48 EDSA Slovasol EHTP-15 EDSA Slovaprop 48 2-Ethylhexanol EDSA Slovaprop 48 2-ethylhexanol Ca-stearate EDSA Slovaprop 48 2-Ethylhexanol EDSA Slovaprop 48 2-ethylhexanol Ca-stearate EDSA Defoamer sample number what CM KS US with r * WHAT

CS 274073 Bl

Claims (5)

OBJECT OF THE INVENTION 1. Multi-component defoamer based oxygenated organic compounds such as aliphatic alcohols, and the Al composition D other oxygenated organic compounds, of products of polyaddition of at least one alkylene oxide _{of 2} to C najmenen to a divalent to hexavalent alcohol C ₂ to C _22, and ethylene-bis-alkylamide least one carboxylic acid of Cg to C ₂₂ and / but will at least one alkali salt of a carboxylic acid, ^C 8 ^{to C} 2 P characterized in that it comprises from 25 to 89.8% by weight. % of the polyaddition of at least one C ₂ -C ₂ alkylene oxide to a divalent to hexavalent C ₂ to C ₂₂ alcohol> 0.01 to 4% by weight; ethylene bis-alkyl amide of at least one carboxylic acid, Cg and C ₂₂ and / or the alkali salt of a carboxylic acid, Cg-C ^ and the remainder to 100% consisting of at least one aliphatic alcohol, C ₂ and C ₂ or a mixture of alcohols with other oxygenated organic compounds, and / or auxiliary substances. Multicomponent defoamer according to claim 1, characterized in that the polyaddition product is a polyaddition product of propylene oxide and / or ethylene oxide with a trivalent aliphatic alcohol, preferably with trimethylolpropane and / or a tetravalent to hexavalent aliphatic alcohol, preferably with pentaerythritol. with an average molar mass of from 1000 to 5000 g, preferably from 2000 to 3500 g ^/ mol. Multicomponent defoamer according to Claims 1 and 2, characterized in that the aliphatic alcohol C ₂ to C _{12 constitutes} at least one alcohol C 2 to C ₁₂ , preferably a by-product from the production of butanol and 2-ethylhexanol by oxoprocessing, composed of a mixture of at least two aliphatic alcohols of C 1 to C ₂ and / or a by-product of cyclohexane oxidation, containing a mixture of at least two aliphatic C 1 to C 2 alcohols. 4. The multi-component defoamer according to claim 1 to 3, characterized in that ethylene-bis-alkylamides are the condensation products of 1,2-diaminoethane of saturated carboxylic acids, Cg-C _22> Preferably, the acid C ₁₂ to C _g and / or unsaturated carboxylic acids C18 to _C22 , preferably with oleic acid. Multicomponent defoamer according to Claims 1 to 4, characterized in that the other oxygenated organic compounds comprise at least one of acetals, ketones, esters, ethers and aldehydes.