CS269143B1 - Liquid washing agent - Google Patents

Abstract

Liquid lye agent intended for lyeing returnable labelled glass bottles in lye bottles. The agent contains sodium hydroxide and sodium alkane sulfonate. The agent has very good lyeing ability and bactericidal and virucidal efficacy.

Description

The present invention relates to a liquid detergent composition which is intended in particular for washing returnable labeled bottles in bottle washers.

Washing of glass bottles in breweries * distilleries * soda shops * wine cellars, etc., is performed in modern bottles with an alkali washing solution. Detergents must be chosen according to the type of soiling of the bottle. Sodium hydroxide or mechanical mixtures of sodium hydroxide with other components are usually used, which improve or enhance the basic efficiency of sodium hydroxide. For example, the Alkon P special composition is a mechanical mixture of sodium phosphate * lupine sodium hydroxide * sodium carbonate * sodium diphosphate.

The disadvantage of solid detergents is the instability of their composition with respect to the imperfect homogeneity of the mixture * hygroscopicity and thus the possibility of sintering with their dissolution in water * or into the dishwasher bottles can be dosed only in the liquid state after dissolution.

More preferred is the liquid detergent composition of the present invention, characterized in that it contains in an aqueous solution 6 * 3 to 41.5% by weight, sodium hydroxide * 12 * 9 and 0 * 3% by weight, sodium carbonate and 0 * 01 to 2 * 0 X wt., Sodium sulfonate alkane.

Said liquid detergent composition can be prepared, for example, by mixing liquid sodium hydroxide produced by electrolysis of brine with a solution of sodium carbonate, which is formed by dissolving solid sodium carbonate in water. The sodium carbonate solution can be replaced, for example, by the use of mother liquor, which is formed during the production of sodium bicarbonate in soda factories. This lye contains an average of 5% by weight. Na 2 CO 2 and 10 X wt. NaHCO 3. Sodium bicarbonate reacts with sodium hydroxide according to the chemical reaction:

NaHCO ₃ + NaOH = NajCO _{2 + H 2 O.}

The liquid detergent composition of the invention has very good effectiveness and detergency.

It has been found that the liquid detergent composition according to the invention has a higher efficiency, even with a fourfold reduction in the concentration of active ingredients. The degreasing and washing effect of the liquid detergent composition according to the invention was compared with the mixtures listed in the table, the concentration of the same active ingredients in the liquid detergent composition according to the invention being four times lower.

Table

Mixture number Concentration of active ingredient Loss / X wt oils in ./ addiction on time in se. in the mixture / X mass, / NaOH At ₂ C0 ₃ sodium alkanesulfonate 60 120 180 240 1 2.64 0.36 - 73.83 81.86 85.75 90.41 2 2.64 - 0.12 77.97 89.63 90.41 92.74 3 - 0.36 0.12 72.53 80.56 85.45 87.82 4 2.64 - - 50 71.5 76.42 81.6 5 - 0.36 - 52.84 64.76 70.72 77.97 6 - - 0.12 61.13 81.86 86.01 88.08 7 0.66 0.09 0.03 77.72 86.01 89.64 92.74

CS 269143 Bl

When applied in ordinary dishwashers, a bottle of 1 liter of liquid detergent replaces the equivalent of 1 kg of solid detergent. The surface of the washed bottles is quenched compared to solid detergents and sodium hydroxide itself. After washing with liquid detergent, the bottles are perfectly clean, shiny and without gray coatings on the surface. There are no microorganisms in the drip water. The shelf life of beer in bottles after washing the bottle with liquid detergent is in the range of 14 to 20 days. The operation of the dishwasher is smooth when using liquid detergent without the usual sliding resistances, difficult tilting of the bottle or sleeping of sprays. The liquid soap composition has good bacterial activity and viral activity in an aqueous medium at temperatures of * 20 to * 40 ° C, an effective concentration of 2 to 4% by weight, and an exposure time of up to 2 minutes. 1 acts similarly in a protein environment.

The advantages of the liquid detergent are its perfect homogeneity and thus stable composition, a better washed surface of the bottle than is achieved with solid detergents or sodium hydroxide, and also that the liquid detergent can be dispensed into the dishwasher directly from the container without first dissolving it. which is otherwise unavoidable with solid detergents.

Example 1

Anhydrous sodium carbonate 50 g dissolved in 453 ml of water. To this solution was added 487 g of 45X aqueous sodium hydroxide solution and 10 g of sodium alkane sulfonate.

A liquid detergent with a specific gravity of 1,285 kg / · ^{3 was} formed, which contained 19.2% by weight. At ₂ 0.

The detergent composition prepared according to the example was used to test for aicrobicidal activity:.

a / Microbicidal action in an aqueous medium at temperatures of 20 and 44 ° C

Temperature 20 ° C 44 ° C Concentration / X / 4 2 0.4 4 2 0.4 Hikrobes; St. aureus • - - - - E, coli - - - - - - Pr. vulgarius • - · • Ps. aeruginosa - - ~ - - Ser. narcescenc - - • - - - C. albicans - + + - 32 32 spores 8 subtils model virus + + + + + + E, coli bacteriophage X 174 8 16 + - 16 +

b / Microbicidal action in protein medium / in 20 X bovine serum / at temperatures of 20 and 44 ° C

Temperature 20 ° C ' 44 ° C Concentration / X / 4 2 0.2 4 2 0.2 Microbes: St. aureus mm w ♦ - 16 32 E. coll ob - - OB OB Pr. vulgaris «» • • - mm * Ps. aeruginosa mm * 8 • • 8 Ser. marcescens * • 8 • 8 C. albicans 3 32 * • 8 8 joints 8. subtilis model virus ♦ ♦ + ♦ E coll bacteriophage · Χ 174 8 16 + 8 8 +

Explanations:

- microbes do not grow, the product is effective * microbes grow, the product is ineffective 8,16,32 exposure in minutes necessary for microbicidal action

Example 2

Anhydrous sodium carbonate 150 kg dissolved in 1,360 l of water. To this solution was added 1,460 kg / 986 1 / 44.4X aqueous sodium hydroxide solution and 30 kg of sodium alkane sulfone.

3,000 kg of liquid detergent was formed, used to wash beer bottles in a 5-day Proma bar operation, in two 8-hour shifts per day, with the Proma dishwasher operating in only one 8-hour shift on the last day.

The basic load of the Proma dishwasher was 7 hl of liquid detergent and the next days were dosed with an average of 4 hl per day. Wash the 790 200 bottles during operation. After drying, the bottles remained perfectly clean, shiny and without gray coatings. During operation, there was no mechanical failure caused by the washing solution, such as an increase in sliding resistance, difficult tilting of the bottles or clogging of the sprays. Labels were also removed without any problems. Finally, the plates were dropped and the inspection did not find any changes in the layer of incrustations.

Laboratory assessment:

content of micro - organisms in the effluent: 0

- culture assay on California, medicinal bacteria and yeast count: comparable to long diameter

- shelf life 12 ° beer 2 x shelf life 14 days x shelf life 18 days 3 x shelf life 20 days

Example 3

The mother liquor, which is formed during the production of sodium bicarbonate in an amount of approximately 10 per 1 t of sodium bicarbonate, is used for the preparation. This mother liquor contained 5% by weight. Na 2 CO 2 and 10 X wt. NaHCO 3.

281 g of the mother liquor were diluted with 196 ml of hot water and 513 g (346 ml) of 45X aqueous sodium hydroxide solution and 10 g of sodium alkane sulfonate were added to the resulting solution.

CS 269143 Bl

A liquid edyd with a specific gravity of 1,276 kg / · ^{3 was} formed, which contained

hoval 18.7 X wt. Ν · ₂ ».

Claims (1)

to OBJECT OF THE INVENTION Liquid composition, characterized in that it contains 6.3 41.5% by weight in aqueous solution. sodium hydroxide, 12.9 to 0.3% by weight. sodium carbonate and 0.01 2.0 X haot. sodium sulfonate alkane.