CS219378B1 - Powder detergent with high utility value in low concentrations of use - Google Patents

Abstract

The invention relates to the detergent industry. It improves the basic invention No. 183 167, describing a detergent enabling the desired washing effect to be achieved at a concentration two to three times lower than that of detergents of the current composition, in the sense of increasing its utility parameters, especially in terms of the effect on mineralization by repeated washing and anti-redeposition ability. The improvement of these monitored detergent quality indicators is achieved by the detergent containing preferably 50 to 70 % by weight of the basic mixture of sodium pyrophosphate and a three-component mixture of citric acid or sodium hexametaphosphate or sodium tripolyphosphate or sodium salt of alkylamide of ethylenediaminetetraacetic acid, with a pyrophosphate content of 25 to 55 % by weight and a weight ratio of sodium pyrophosphate and individual complexing additives from the three-component mixture of 1.1 to 80:1, while the weight ratio between the basic mixture and additional electrolytes (sodium carbonate, sodium silicates, sodium sulfate) ranges from 6 to 900:1.

Description

The invention relates to a further improvement of the basic invention No. 183,167. The subject of the invention increases the utility value of powder detergents with high efficiency in low use concentrations, especially in the effect on mineralization by repeated washing.

The composition of detergents according to the invention No. 183 167 allows to achieve a comparable washing effect even at a two to three times lower concentration compared to detergents of the current composition, which brings a significant reduction in the sp-wear of the detergent for a given amount of laundry. This achieves savings in individual raw materials, reducing the economic demands of washing. The basic invention is also beneficial in terms of environmental protection. Achieving a high washing effect is made possible here by using sodium pyrophosphate as a carrier type of activator, the negative properties of pyrophosphate in the influence on mineralization and the anti-redeposition ability of the agent are then partially eliminated by the limit ratio of the content of sodium pyrophosphate and alkaline or neutrally reacting additional electrolytes.

The increase in the utility value in terms of mineralization and anti-redeposition ability of detergents with high efficiency in low use concentrations is enabled by the invention of a detergent characterized in that it contains 45 to 90, preferably 50 to 70% by weight of the basic mixture of sodium pyrophosphate* and a three-component mixture of acid or sodium salt of citric acid or sodium hexametaphosphate or sodium tripolyphosphate or sodium salts of monooctyl- to monooctadecylamide of ethylenediaminetetraacetic acid, with a sodium pyrophosphate content in the detergent in an amount of 25 to 55% by weight and with a weight ratio of sodium pyrophosphate and individual complexing additives from the three-component mixture of 1.1 to 30: 1, whereby the weight ratio between the basic mixture and alkaline or neutral reacting additional electrolytes, namely sodium carbonate, normal and acidic, or sodium silicates or sodium sulfate or a two- to three-component mixture of these substances ranges from 6 to 900:1.

The advantage of the invention is that it retains all the advantages of powder detergents with high efficiency in low concentrations of use according to the basic invention No. 183 167 and further increases their utility value in terms of reducing mineralization due to repeated washing and increasing anti-redeposition. Both of these criteria are important indicators of the quality of the detergent.

For further clarification, we present the following example.

Example of execution

Any technological method of preparing powdered detergents produces a detergent with the following composition:

% wt. sodium dodecylbenzenesulfonate 10.0 sodium soap 5.0 block copolymer ethylene oxide (propylene oxide) 5.0 sodium tripolyphosphate 20.0 sodium pyriophosphate 29.0 sodium hexametaphosphate 10.0 sodium sulfate 7.0 water glass (dry matter) 2.0 carboxymethylcellulose 3.0 optical brighteners 0.5 water 5.2 monododecylamine acid ethylenediaminetetraacetic acid 3.0 trisodium salt 3.0 perfume 0.3

The result is a powder detergent that has comparable effectiveness to conventional detergents in all quality indicators, even at significantly lower use concentrations.

Claims (1)

Subject Detergent powder with high utility value at low concentrations, increasing the quality of the detergent compositions according to the present invention No. 183 167 in mineralization and anti-redeposition indicators, characterized in that it contains 45 to 90%, preferably 50 to 70% by weight of the basic mixture of sodium pyrophosphate and ternary mixtures of an acid or sodium salt of citric acid or sodium hexametaphosphate or sodium tripolyphosphate or sodium monooctyl to monooctadecylamide of ethylenediaminetetraacetic acid, % Of sodium pyrophosphate in the detergent in an amount of 25 to 55% by weight and a weight ratio of sodium pyrophosphate to the individual complexing agents of the three-component mixture of 1.1 to 30: 1, wherein the weight ratio between the base mixture and alkaline or neutral reactive supplementary electrolytes, whether sodium carbonate, normal or acidic, or • sodium silicates or sodium sulphate or a two- or three-component mixture of these substances, ranging from 6 to 900: 1.