CS215653B1 - Pulverized water-soluble non-dusting compositions with cleaning,washing and particularly bleaching effects - Google Patents

Description

SUMMARY OF THE INVENTION The present invention relates to detergent compositions based on the action of a reducing agent and significant bleaching effects. They comprise sodium dithionite mixed with a mixture of surfactants, such as sodium alkyl polyglycol ether sulphate and sodium lauryl sulphate in a ratio of 1: 9, in the presence of optical brighteners and other active and conditioning agents. They are in the form of a non-dusty, powdered mixture of water-soluble surfactants, synergistic both with washing and abundant bleaching effects released by sulfur dioxide in aqueous solutions. They are suitable for washing at temperatures from 20 to 35 ° C, but also from 35 to 90 ° C, materials and fabrics natural and artificial.

The compositions of the invention comprise:

- 30 parts by weight of polyphosphates, eg sodium pyrophosphate,

- 25

- 25 3-5 3-5 7 - 10 0,3 - 0,5 3-5 alkyl, sodium sulphate of chain length ^c q - C ₂ ^, or mixtures thereof, eg sodium alkyl glycol ether sulphate and sodium lauryl sulphate in relation to each other 1: 9, sodium dithlonate, carboxymethylcellulose, sodium tetraborate, sodium carbonate, benzoic acid, diethanolamide of unsaturated fatty acids of chain length

215 653

215 653

0.3

0.5

0.5 parts by weight of optical brighteners, for example sodium 4,4-dibenzylaminostylbene-2,2- <lisulfoacid, parts by weight of sodium ethylenediaminotetraacetic acid, alkali metal salts, for example sodium chloride

Detergents β bleaching effects are well known, richly described in the patent and other literature. Bleaching components based on the release of active oxygen, chlorine, sulfur dioxide are also known. Also described are technologies of sulfur dioxide bleaching of some raw materials for fabrics production, eg wool, flax, cotton etc. Last but not least, chemical compounds used as optically brighteners mixed with detergents are well known.

However, there is no disclosure in the literature of the use of intensive sulfur dioxide bleaching during washing, using sodium dithionite in a complex of other active substances and optically brighteners as disclosed in the present invention.

It has now been found that it is advantageous to formulate stable detergent, cleaning and bleaching compositions in powder-free form, utilizing a pronounced bleaching effect, without damaging raw materials and fabrics, with sulfur dioxide, by releasing it by decomposing sodium dithionite in aqueous solution due to induced new , hitherto unknown synergistic systems enabling the use of increased effects in washing and cleaning processes at lower and higher temperatures of washing and cleaning baths.

Due to the synergistic relationships in the formed reducing environment of the solutions resulting from the release of sulfur dioxide by the decomposition of sodium dithionite in the presence of water and surfactants, in particular optical brighteners, and between impurities of organic inorganic origin on washed materials, activation and fixation of optical brighteners of ions, at different temperatures, in the pH range of 8 - 10, the principle of abilities and efficacy of substances acting both at lower temperatures (Light duty process) and at higher temperatures (Heavy duty process), was identified as effective bleaching, washing and cleaning efficacy of formulated formulations.

The stability of formulated formulations, which makes the product usable even for long-term storage without loss of properties, already arises in the preparation of the compositions given in Examples 1 to 4. The formulations prepared according to these examples, where all newly discovered properties can be used fabrics sensitive to heat loads above 35 ° C and pH values higher than 8,5 m, materials and fabrics with temperatures up to 50 ° C or even higher than 90 ° C in the pH range of 8,8 to 10.

Compared to other detergents, the composition of the formulation provides the advantage of removing the darkening of the present optical brightener, its regeneration upon re-washing.

Example 1

The following are gradually introduced into the homogenization device, which has been dehumidified at room temperature, without heating, without heating:

parts by weight of a powder mixture of sodium alkyl polyglycol ether sulphate and sodium lauryl sulphate in a ratio of 1: 9 to 100% of the substance, sodium pyrophosphate anhydrous,

215 653 parts by weight γ «« · *

0.5

0.5

0.3

12.7?

sodium borohydride crystalline, anhydrous carbonate, carboxymethylcellulose as 100% benzoic acid as 100%.

The contents are mixed for 10 minutes by commissioning the homogenizer.

After mixing, the apparatus is allowed to run and the coconut dlethanolamide is slowly added to the resulting mixture.

After dosing, ee is allowed to mix for 20 minutes. The apparatus is run and successively dosed into it according to the following sequence of sodium ethylenediaminetetraacetic acid, sodium bianaphthotriazoldiphenyl tetrasulfonate, sodium chloride and finally sodium dithionite.

The resulting content, which is 100 parts by weight of the mixture of substances, is homogenized for 20 minutes. After this time, the process is virtually completed. The machine is shut down. The resulting product is thus rendered into a non-dusted form of the coarse powder. The 3% aqueous solution has a pH of 8. The composition has been used as a detergent with a strong bleaching effect on materials: tesil, polyester, polyester-cotton, teiylene, polyamide.

The application bath was prepared from 100 parts water and 0.4 ml of the formulation. The washing and bleaching process proceeded spontaneously at 50 ° C for six hours. Quality separation of impurities and washing of material, high whiteness without chemical and thermo-mechanical damage was achieved.

Example 2

Into the homogenization device, previously dehumidified, at room temperature, without heating, the following are gradually introduced:

parts by weight of a powder mixture of sodium alkyl polyglycol ether sulphate and cetyl olil sodium sulphonate in a ratio of 1: 9 as 100% of the substance, sodium pyrophosphate, sodium tetraborate, anhydrous sodium carbonate, carboxymethylcellulose as 100% of the substance,

0.3 benzoic acid as 100% of the substance.

The contents of the homogenizer are mixed for 10 minutes.

After mixing, the homogenizer is left running and the coconut dlethanolamide is slowly added to the resulting mixture.

After dosing is complete, the contents are allowed to stir for 20 minutes. The apparatus is allowed to continue running and is gradually metered into it according to the following sequence

0,5 sodium ethylenediaminetetraacetic acid,

0 _t 3 ^of 4.4 bie-2-oxy-4-phenylamino-1,3,5 triazyl / 6 / I-diaminostylben-2,2 disulfonic acid.

215 654 4

14.9 parts by weight of sodium sulfate and finally 18 sodium dithionite.

The resulting coating, which is 100 parts by weight of the mixture of substances, is homogenized for 20 minutes. After this time, the process is virtually completed. Equipment ae shuts down. The resulting product is thus rendered into a non-dusty form of a coarser powder. The 3% aqueous solution has a pH of 9.8. The preparation was used as a detergent and with a bleaching effect on cotton and linen materials.

The application bath was prepared with 100 parts water and 0.4 parts preparation. The washing and bleaching process was carried out in a mechanical washing machine for 30 minutes and spontaneously for 16 hours at 90 ° C. Good quality of impurities and washing of material, high whiteness without chemical and thermo-mechanical damage was achieved.

Example 3 '

Into a pre-dehumidified homogenizer at room temperature, without heating, the following are gradually introduced:

% by weight of a mixture of sodium alpha-olefin sulphonate of chain length Cg and alpha-olefin sulphonate of chain length? 15-24 ^{in a} ratio of 1: 8, sodium tripolyphosphate, sodium tetraborate, anhydrous sodium carbonate, carboxymethylcellulose as 100%.

Starting the homogenizer, the contents are mixed for 10 minutes.

J

After mixing, the apparatus is allowed to run and is gradually dosed into it according to the following sequence

0,5 ”sodium ethylenediamine tetra-acetate,

0,5 diphenyliminoazodisulphoic acid sodium salt,

Of potassium chloride and finally sodium dithionite.

The resulting content, which is 100 parts by weight of the mixture of substances, is homogenized for minutes. After this time, the process is virtually completed. The machine is shut down.

The resulting product is thus rendered into a non-dusty form of a coarser powder. The 3% aqueous solution has a pH of 9.3. The product was used as a detergent with a strong whitening effect on materials: polyacrylonitrile, viscose rayon, nylon and tesil.

The application bath was prepared from 100 parts water and 0.4 parts preparation. The washing and bleaching process was carried out at 40 ° C in the washing machine for 15 minutes and spontaneously for 6 hours. Good separation of impurities and washing of material, high whiteness without chemical and thermo-mechanical damage was achieved.

Example 4

Into a pre-dehumidified homogenizer at room temperature, without heating, the following are gradually introduced:

parts by weight of the powder mixture of sodium alkylbenzene sulphonate, sodium pyrophosphate anhydrous,

215 653

5 parts by weight of crystalline sodium tetraborate, 10 H II anhydrous sodium carbonate, 5 H n carbonymethylcellulose as 100% of the substance, 0.5 ♦ t n benzoic acid as 100% of the substance. The contents of the homogenizer are blended for 10 minutes. After mixing, the apparatus is left to run and slowly formed into the resulting mixture dosages 5 H n of coconut diethanolamide and allowed to mix for 20 minutes after dosing. The device is does not continue to run and is gradually dosed into it according to the following sequences 2 ff M sodium ethylenediaminetetraacetic acid, 0.5 H M sodium 4,4'-dibenzylaminostylbene-2,2 'disulfoacid, 10 II M sodium sulfate and finally 20 May n W sodium dithionite. Originated content, which represents 100 parts by weight of the mixture of substances is homogenized 20 minutes • After this the process is virtually completed. The machine is shut down. Resulting product

it is thus rendered into a non-opaque form of a coarser powder. A 3% aqueous solution at pH 9.1.

The composition was used as a detergent with a strong bleaching effect on polyamide, polyester, polyacrylonitrile, viscose rayon and wool.

The application bath was prepared from 100 parts water and 0.4 parts preparation. The washing and bleaching process was carried out at 20 ° C in a mechanical washing machine, then spontaneously for 6 hours. Good separation of impurities and washing of material, high whiteness without chemical and thermo-mechanical damage was achieved.

Claims (1)

1. Powder-free water-soluble preparations having a cleaning, washing and in particular a bleaching effect, intended for washing and bleaching of synthetic and natural materials and fabrics in washing and cleaning baths in the temperature range of 30 to 90 ° C, characterized in that they contain by weight 18 to 25 parts 18 - 30 ” 3 - 5 3 - 5 7 - '10 0.3 to 0.5 3-5 * anionic surfactants of chain length ^C 24 ^-C g mixed with each other, e.g. AMEA alkylglykoletersulfátu sodium and sodium lauryl sulfate in a ratio of 9: 1 as 100%, polyphosphates, e.g., sodium pyrophosphate anhydrous, carbonymethyleellulose as 100% of the substance, crystalline sodium tetraborate, anhydrous sodium carbonate, benzoic acid, diethanolande of unsaturated fatty acids with a chain length of ^C 13 "° 15 eg coconut diethanolamide as 100% of the substance, 215 653 0.3 - 0.5 18 - 25 8 - 15 0.5-2 parts of an ophthalmic preparation, e.g. sodium 4,4'-benzylamino-ethylbenzyl-2,2'-sulfonic acid, such as 100% sodium dithlonate, alkali metal salts, e.g. sodium chloride, sodium ethylenediamine stearate.