HU212439B - Method for producing alkaline cleaning- and disinfecting agents of milking house - Google Patents

Abstract

The process according to the present invention is carried out by adding 2 to 25% by weight of potassium hydroxide to the final product in an aqueous solution, followed by 0.2 to 2% by weight OH OH (OCH2CH2) nOP = O of OH poly (O). glycol ether-orthophosphoric acid ester in which n is from 3 to 800 to 0.5 to 10% by weight of polyacrylic acid having an average relative molecular weight of 4,000 to 20,000, 6 to 12% by weight of water glass and 1-3% by weight of sodium benzoate; cooling to room temperature with an aqueous sodium hypochlorite solution required to adjust the active chlorine content of from 5 to 40 g / kg and from 0.1 to 5% by weight of alkyl glycoside and (R'-O-CH2CH2) n'0H in general of alkyl polyethyleneglycol ether, wherein R 'is an alkyl group and n' is a mixture of 3 to 800 and a mixture of aliphatic carboxylic acid, wherein the weight ratio of alkyl glycoside to alkyl polyethylene glycol ether / aliphatic carboxylic acid is 1: 0 , 5-20, and more the ratio of alkyl polyethylene glycol ether to aliphatic carboxylic acid is 1: 0.5 to 5 and 0.01 to 15% by weight of silicone antifoam emulsion, which is pre-homogenized. The present invention also relates to alkaline dairy cleaning and disinfecting agents. EN 212 439 B Description: 6 pages

Description

BACKGROUND OF THE INVENTION The present invention relates to alkaline milking-house cleaning and disinfecting agents containing a surfactant, antifoam, alkali, complexing agent, bactericide and anticorrosion agent, and a process for their preparation.

The process according to the invention is carried out by treating potassium hydroxide in an aqueous solution with 2-25% by weight of the final product, and then by 0.2-2% by weight at 50-60 ° C.

OH

H (OCH ₂ CH ₂ ) _n -OP = O

OH polyethylene glycol ether orthophosphoric ester, wherein n is from 3 to 800, is dissolved in 0.5 to 10% by weight of polyacrylic acid of average molecular weight 40020 000, 6 to 12% by weight of water glass and 1 to 3% by weight of sodium benzoate, the mixture was cooled to room temperature, which required amount of aqueous sodium hypochlorite 5 to 40 g / kg active chlorine content set, and 0.1-5 weight% C12-14 alkyl glycoside and (RO-CH ₂ CH ₂₎ '' OH a mixture of an alkyl polyethylene glycol ether of the formula wherein R is a C12-C18 alkyl group and n 'is in the range of 3 to 800 and a C6-C10 aliphatic carboxylic acid, wherein the alkyl glycoside and the alkyl polyethylene glycol ether and the weight ratio of the mixture of aliphatic carboxylic acid is 1: 0.5-20, and the weight ratio of alkyl polyethylene glycol ether to aliphatic carboxylic acid is 1: 0.5-5, and 0.01-0.15% by weight of silicone antifoam emulsion is added. nk which has been homogenized beforehand.

The present invention also relates to alkaline milking house cleaning and disinfectant compositions wherein the composition is in aqueous solution based on the final product.

Potassium hydroxide at 2-25%, then 0.2-2% by weight at 50-60 ° C

OK

I

HfOCH ^ H ^ n-O-P ^ O

OK, the potassium salt of polyethylene glycol ether orthophosphoric acid ester, wherein n is from 3 to 800, from 0.5 to 10% by weight of potassium salt of polyacrylic acid of average molecular weight 4000 to 20,000, and from 6 to 12% by weight of water glass,

It contains 1-3% by weight of sodium benzoate, an aqueous solution of sodium hypochlorite corresponding to 5-40 g / kg of active chlorine, and 0.1-5% by weight of C12-C14 alkyl glycoside and (R'-OCH2 _{). A} potassium salt of an alkyl polyethylene glycol ether of the formula CHp _B ^z OK wherein R 'is a C12-C18 alkyl group and n' is in the range of 3 to 800, and

A mixture of a C 6 -C 10 aliphatic carboxylic acid potassium salt mixture, wherein the weight ratio of alkyl glycoside to alkyl polyethylene glycol ether and aliphatic carboxylic acid potassium salt is 1: 0.5: 20, and alkyl polyethylene glycol ether and aliphatic carboxylic acid The weight ratio of potassium salt is 1: 0.5-5 and 0.01-0.15% by weight of silicone antifoam emulsion.

Dairy farms now have milking machines with almost no exceptions. On smaller farms, the equipment consists of one or more milking machines connected to a vacuum system.

On larger farms, milking is carried out in modern milking houses, which include filters, a central tank with refrigeration equipment and other serving equipment, along with a pipeline for the transport of milk. In the central tank, storage and chilled milk from several dairies are often transported to the dairy by tank truck at intervals of several days.

Milk is a bacterially sensitive food; During processing, a lack of hygiene in the quality and shelf life of milk and milk-based dairy products is immediately apparent. This is why dairy farms impose stringent bacteriological requirements on suppliers. The requirements are set out in standards worldwide. Milking machines and pipelines must be cleaned and disinfected after each milking to ensure hygienic standards. The central tank must also be cleaned and disinfected after each emptying.

Certain parts of the equipment are quite complicated and cannot be disassembled and dismantled daily and cannot be cleaned daily. Cleaning is usually done by circular washing; a warm 4060 'C wash solution is circulated through the system. Generally used detergents with retarded foam should not be used. Depending on their function, structural material and temperature, the surfaces to be cleaned will produce fat residues containing milk fats, fats, proteins, sugars and inorganic salts which solidify into milk stones, which render the glass and plastic pipes of the equipment opaque. To protect the resulting coatings, microorganisms multiply rapidly and acceptable milk quality cannot be guaranteed. Alternative use of special alkaline and acidic detergent and disinfectant detergent solutions is required.

This invention relates to the problems of designing and producing alkaline milking-house cleaners and disinfectants. Alkaline cleaning disinfectants hydrolytically decompose the fat and protein contaminants that are formed, dissolve, disperse or emulsify with inorganic salts and disinfect the cleaned surfaces.

According to references in the art, the application properties of alkaline compositions are as follows;

- wetting capacity

- Foaming

- washing effect

- ability to remove deposits containing minerals

- bactericidal effect

- corrosion effect (especially on Al)

pH.

The large number of patents indicates that the bacterium, which has a good wetting and washing effect, has a controlled foaming, can partially or completely remove the

The formulation of detergent-disinfectant compositions having a cid-effect, non-metallic and non-metallic finish is not an easy task (English Patent No. 2,173,102; Australian Patent No. 286,870; Czechoslovakian Patent No. 198,461; Patent No. 775,615); Finnish Patent No. 64,812; French Patent No. 2,540,511; Canadian Patent No. 1,024,441; Polish Patent No. 87,032; Swedish Patent 427,469; German Patent Nos. 18,028,921; and 2,713,265; 482,493, 495,346, 732,369, 735,630, 740,821, 781,213, 883,166, 950,758, 1,074,897 and 3,162,871 579 6 76 U.S. Patents). The solutions proposed in the present invention are similar in that the cleaning disinfectants generally contain a surfactant, sometimes an antifoaming agent, an alkali or a basic agent, a water softener and a washing aid, a complexing agent, a bactericide, corrosion inhibitors and various additives.

A variety of anionic, cationic, nonionic and ampholytic surfactants are recommended as surfactants, but nonionic surfactants and ampholytes are generally preferred.

Alkalines: sodium and potassium hydroxides are used primarily to provide the basic effect, but many other alkaline hydrolyzing inorganic salts and organic bases have also been tried.

As complexing agents, alkali phosphates and polyphosphates, salts of hydroxy acids, ethylenediaminetetraacetic acid, nitrile triacetic acid, various polymeric acrylic and methacrylic acid derivatives, phosphinopolycarboxylic acid and the like. proposed.

Suitable bactericidal activity partly due to the high pH 1114 and partly broad spectrum inorganic and organic bactericides (alkaline and alkaline earth metal hypochlorites, chlorinated trisodium phosphate dodecahydrate, dichloroisocyanuric acid K-salt, trichloroisocyanuric acid) dichlorohydantoin, 5,5-dimethylhydantoin, chloramine T, dichloramine T, chlorhexidine, various halophores, quaternary ammonium compounds, etc.).

One of the major problems with the highly alkaline, often oxidative media, and the sensitive - aluminum, plastic and rubber components of the milking equipment - is to provide satisfactory corrosion protection. However, a significant number of patents do not address this issue, and at most they deal with aluminum corrosion. Nasilicates, metasilicates and salts of organic and inorganic acids are recommended as corrosion protection.

Depending on the nature of the detergent-disinfectant, such as detergent powder, cream or liquid, the additives may be inorganic salts, mechanically-enhancing laundry detergents, solubilizers, and solubilizers.

In the course of our work, we have sought to produce alkaline cleaning and disinfectant agents that are inexpensive, have anticorrosive properties, have excellent washing and cleaning properties, and are generally suitable for use in generally hard water areas and under unfavorable hygiene conditions.

According to our studies, the following compositions are fully compliant with the above requirements:

percent by weight

RO-Gl alkylglycoside of formula - wherein R is C _14-Cl 2-inch lower greaseproof group,

G1OH stands for Starch Whey

- and alkyl polyethylene glycol ether of the formula (R'-O-CH ₂ CH ₂ ) _n ^, OH

0.1 to 5% of the formula

R 'is a C 12 -C 17 alkyl group and n' is a mixture of 3 to 800 aliphatic carboxylic acids having from 6 to 10 carbon atoms, wherein the weight ratio of alkyl glycoside to alkyl polyethylene glycol ether / aliphatic carboxylic acid is 1: 0.5-20; weight ratio of alkyl polyethylene glycol ether to aliphatic carboxylic acid 1: 0.5-5 Silicone antifoam emulsion 0.01-0.15%

KOH 2-25%

Polyacrylic acid (= 4000-20,000) 0.5-10%

NaOCl, active chlorine content in the product is 5-40 g / kg

OH

I

H (OCH ₂ CH ₂ ) _n -OP = O

OH 0.2-2% polyethylene glycol ether orthophosphoric ester - where n is from 3 to 800

Water glass 6-12%

Sodium benzoate 1-3%

Water gives 100%.

The combination of an aliphatic carboxylic acid foamed alkyl polyethylene glycol ether (such as BASF Lutensit AN 40) and an alkyl glycoside provides a good wetting and excellent washing and cleaning effect. The alkyl glycoside is swallowed in a manner known per se from starch syrup and C2-C14 fatty alcohols. The use of silicone antifoam, which also contributes to the corrosion protection of polar surfaces, is either not required or is very limited. Hydrolytic decomposition of fat and protein deposits is carried out with potassium hydroxide.

Examples

Example 1 Dissolve 25 kg of potassium hydroxide in 1 kg of water and then, with stirring at 50-60 ° C, add 2 kg of polyethylene glycol ether orthophosphoric ester (Corantin LUB, BASF), 0.5 kg of an average molecular weight of 1000

Add 21 kg of polyacrylic acid, 30 kg of a 40% water glass and 1 kg of sodium benzoate. The mixture was cooled to room temperature and treated with 5.5 kg of 90 g / kg of active chlorine-containing aqueous sodium hypochlorite solution and 0.05 kg, and produced keményítőszörpből _{C] 2} -C ₁₄ inch higher fatty alcohol of an alkyl glycoside, 0, 0625 kg 80% 1% alkyl polyethylene glycol ether, aliphatic carboxylic acid mixture (Lutensit AN 40, BASF) and 0.02 g silicone antifoam emulsion. The surfactants (alkyl glycoside and Lutensit AN 40) and the antifoam were homogenized before dosing.

Example 2 6 kg of potassium hydroxide are dissolved in kg of water and 0.2 kg of polyethylene glycol ether orthophosphoric ester (Corantin LUB, BASF), 4 kg of 25% w / w solution are stirred at 50-60 ° C. Modified polyacrylic acid solution (Sokalan CP 13S, BASF) having an average molecular weight of 20,000, 25 kg of 40% water glass and 3 kg of sodium benzoate was added. The mixture was cooled to room temperature and treated with 33 kg of 90 g / kg of active chlorine-containing aqueous sodium hypochlorite solution and 0.1 kg keményítőszörpből and C | in 2 -C ₄ inch higher fatty alcohol of an alkyl glycoside, 0.625 kg of 80% alkyl polyethylene glycol ether, aliphatic carboxylic acid mixture (Lutensin AN 40, BASF) and 0.01 kg of silicone antifoam emulsion. The surfactants (alkyl glycoside and Lutensit AN 40) and the antifoam were homogenized before dosing.

Example 3 Dissolve 2 kg of potassium hydroxide in 1 kg of water, then add 1 kg of polyethylene glycol ether orthophosphoric ester (Corantin LUB, BASF), 20 kg of 50% Modified polyacrylic acid solution (Sokalan CP 10S, BASF), 15 kg of 40% water glass and 1.5 kg of sodium benzoate are added. The mixture is then cooled to room temperature and 23.5 kg of aqueous sodium hypochlorite solution containing 170 g / kg of active chlorine and 0.3 kg of starch syrup and C2-C2 are added. Alkyl glycoside ₄ fatty alcohol, 5.87 kg 80% alkyl polyethylene glycol ether, aliphatic carboxylic acid mixture (Lutensit AN40, BASF) and 0.15 kg silicone antifoam emulsion A surfactants (alkyl glycoside and Lutenzite AN 40) and the antifoam was homogenized prior to dosing.

Our new alkaline milking-house cleaning disinfectants are inexpensive, have excellent corrosion protection properties, have excellent washing and cleaning properties, can be used in hard-water areas and under unfavorable hygiene conditions. They have a minimal phosphate content and are therefore considered environmentally friendly. Their preparation, storage, transport and use are simple and safe, subject to the safety rules and instructions for alkalis.

Comparison of the compositions of the invention (MILCO-OH) with the known LACTO (manufactured by Melott) gave the following results.

The experiments were carried out in Pest and Zala counties - in the dairy farm of a state farm - for several months. In addition to washing-cleaning and disinfecting effects, the corrosion properties were also investigated.

The system (milking equipment, transitional and daily tanks, refrigerators, pipelines, etc.) was rinsed daily with cold water before milking and then hot water after milking according to the automatic washing program. Then, on a regular basis, with acidic washing with 1% 50% C aqueous solution of MILCOOH and LACTO active ingredients on even days, acidic washing with 1% HOROLITH acidic detergent followed by cold rinse .

The washing-cleaning effect was monitored by monitoring of limescale deposits (at what intervals mechanical cleaning is required?), And the disinfecting effect was monitored by microbiological laboratory tests (regular milk sampling and hygiene checks). The corrosion status of the structural elements of the system (steel, aluminum, plastic, rubber) was also continuously investigated.

Our findings are as follows:

With the use of MILCO-OH - due to its outstanding washer-cleaning effect and complexity - the system operated continuously for 5060% without interruption, without the need for disassembly and mechanical cleaning of the system.

In both cases the disinfectant effect was impeccable.

During the investigated period, no structural corrosion changes were observed in the experiments with MILCO-OH. During the control tests with LACTO active, the plastic parts had to be replaced several times because they became brittle and cracked. We also found slight corrosion changes in the parts made from the Alloy. [LACTO Active Composition contains 55 g / l KOH and 31 g / l active chlorine, manufactured by Gascogne Melotte GmbH Austria.]

The field tests proved our expectations. In the keményítőszörpből and C _lz -Ci4 at higher fatty alcohol of specific alkyl glycoside, alkyl polietilénglikoléter and aliphatic carboxylic acid detergent active materials, polyacrylic acid complexing as well as the aqueous alkaline sodium hypochlorite excellent cleaner-disinfectant effect gives high as 20 nk ' water hardness. The superior corrosion properties were achieved by the combined use of polyethylene glycol ether orthophosphoric acid, Na-silicate and Na-benzoate.

Claims (3)

PATIENT INDIVIDUAL POINTS 1. A process for the preparation of an alkaline milking house cleaning and disinfecting agent comprising a surfactant, antifoam, a laxative, a complexing agent, a bactericide and an anti-corrosion agent, characterized in that it comprises from 2 to 25% by weight of potassium hydroxide in the aqueous solution and 50 to 60% by weight of the final product. 0.2-2% by weight OH I H (0CH ₂ CH 2) _n -OP = 0 formula OH is a polyethylene glycol ether orthophosphoric acid ester of formula 4 HU 212 439 Β n is from 3 to 800 to 0.5 to 10% by weight of polyacrylic acid having an average relative molecular weight of 4,000 to 20,000, 6 to 12% by weight of water glass and 1 to 3% by weight of sodium benzoate is cooled to room temperature to which 5 necessary -40 g / kg active chlorine content set amount of aqueous sodium hypochlorite and 0.1 to 5 wt% C12-14 alkyl glycoside and (R'-O-CH ₂ CH _{2) n} 'OH alkyl formula polyethylene glycol ether in which R 'is a C12-C18 alkyl group and n' is a mixture of from 3 to 800 and a mixture of C 6-10 aliphatic carboxylic acid, wherein the weight ratio of alkylglycoside to alkylpolyethylene glycol ether and aliphatic carboxylic acid is 1: 0.5-20, and the weight ratio of alkyl polyethylene glycol and aliphatic carboxylic acid is 1: 0.5-5, and 0.01-0.15% by weight of silicone antifoam emulsion, which is homogenized in advance. Process according to claim 1, characterized in that the alkyl glycoside is prepared, in a manner known per se, from starch syrup and C 1 -C ₄ carbon atoms. 3. Alkaline milking house cleaners and disinfectants having an antifoam, alkali, complexing, bactericide and anti-corrosion agent, characterized in that the composition is present in the aqueous solution in an amount of from 2 to 25% by weight of potassium hydroxide and then at 5060 ° C by 0.25%. -2% by weight THEY I H (OCH ₂ CH ₂ ) _n -OP = O OK polyethylene glycol ether orthophosphoric ester potassium salt of formula n is from 3 to 800 to -0.5 to 10% by weight of a polyacrylic acid salt having an average relative molecular weight of 4,000 to 20,000, or 6 to 12% by weight of water glass, 1-3% by weight of sodium benzoate, an aqueous sodium hypochlorite solution corresponding to 5-40 g / kg of active chlorine, and from 0.1 to 5% by weight of C12-C14 alkyl glycoside and (R'-O-CH1 CH2 / OK). alkyl polyethylene glycol ether potassium salt wherein R 1 is a C 12 -C 18 alkyl group and n 'is a mixture of from 3 to 800 and a C 6 -C 10 aliphatic carboxylic acid potassium salt mixture wherein the alkyl glycoside and alkyl polyethylene glycol ether and the weight ratio of the aliphatic carboxylic acid potassium salt is from 1: 0.5: 20, and the weight ratio of alkyl polyethylene glycol ether to the aliphatic carboxylic acid potassium salt is from 1: 0.5 to 5%, and from 0.01 to 0.15% by weight of silicone antifoam emulsion contain.