DD299124A7 - SOLID, PHOSPHATE-FREE LOW TEMPERATURE DETERGENT WITH BLEACHING EFFECT - Google Patents

Abstract

The invention relates to a solid, phosphate-free low-temperature detergent (NTW) for washing and bleaching at 30-40C, which also has a high washing and bleaching action at these temperatures and therefore has energy-economic advantages and has a high storage stability with respect to the active chlorine content. The object is achieved according to the invention by the preparation of a detergent consisting of 2-6 * nonionic surfactant, 2-6 * alkyl sulfonate, * * animal fatty acid, 6-10 * chloramine, 2-4 * soda, 25-35 * aluminosilicate, * * Aminotrimethanephosphonic acid, 2-4 * urea, 1-3 * borax, * * carboxymethylcellulose, 30-40 * sodium sulfate, 2-4 * sodium metasilicate, and 2-6 * water. {Low temperature detergent; phosphate-free detergent; Washing performance; Bleaching effect; Active chlorine content; Chlorine stabilization; Storage stabilization; Energy saving}

Description

consists.

Field of application of the invention

The invention relates to a solid, phosphate-free low-temperature detergent with bleaching action in Tempei aturbereich 3 (MO ⁰ C.

Characteristic animal known technical solutions

In DE-OS 1,931,329 a washing and bleaching agent is described, which reflects the current state of detergent development and at the same time shows remaining focus problems. Thus, it has always been a problem to obtain bleach-active bleaching agents containing active chlorine in detergents for low temperatures after they have been formulated. By residual moisture part of the active chlorine splits off during storage and affects the bleaching effect of detergents and cleaning agents to a large extent.

In DE-OS 1,931,329 a solution for the elimination of the active chlorine loss of conventional detergents and cleaners is proposed. The essence of the solution is that phosphate-containing detergents and bleaches by using 0.5 to 33.3 wt .-% active chlorine carrier (dichloroisocyanuric acid or its water-soluble salts) and 0.1 to 66.7 wt .-% 5.5 Dimethylhydantoin at a mass ratio of dichloroisocyanuric acid to 5,5-dimethylhydantoin of 5: 1 to 1: 2, which are relatively storage stable and well-effective.

A disadvantage dab'ei is that a two-component system is necessary to achieve a reasonable shelf life. Furthermore, it is uneconomical, by the additional use of the costly chemical 5,5-Dimethylhydantoih to achieve only a slight improvement in storage stability, as the following overview shows:

Detergents and cleaning agents% active chlorine

after 2 months

79.1% by weight of washing powder 20.9% by weight of bleaching agent, of which IS.SMa .- ^ oNa-dichloroisocyanurate

7.6% by mass of 5,5-dimethylhydantoin 79.1% by mass of washing powder 20.9% by mass of bleach, thereof 13.3% by mass of sodium dichloroisocyanurate 7.6% by mass of sodium sulfate

Another disadvantage of these formulations is that the bleaching action of the active chlorine carrier only comes to full effect at temperatures of more than 45 ⁰ C.

Furthermore, liquid-detergent compositions containing sodium polyphosphate have been proposed in which the easy oxidizability of the active chlorine-forming bleaching agents in the presence of nonionic surfactants is inhibited by combinations containing sodium metasilicate and carboxymethyl cellulose.

The aim of the invention is to develop a solid, phosphate-free low-temperature detergent with high bleaching action in the temperature range 3 (MO ⁰ C, which has a high storage stability.

Explanation of the essence of the invention

The invention has for its object to develop a fostes, phosphate-free low-temperature detergent with high washing and bleaching action in the temperature range 30-40 ⁰ C, which has a high Lagersta aity with respect to the active chlorine effect. The object is achieved in that a low detergent combination consisting of 2-6Ma .-% nonionic surfactant, 2-6Ma .-% alkyl sulfonate, 0.3-0.7Ma .-% animal body fatty acid, 6-10Ma .-% chloramine T (p-toluenesulfonylchloramide-Na-salt trihydrate), 2-4% by weight of soda, 25-35% by weight of aluminosilicate, 0.2-0.6% by weight of aminotrimethanephosphonic acid, 2-4% by weight of urea, 1 -3Ma .-% borax, 1.5-2.5 wt .-% carboxymethylcellulose, 30-40 Ma .-% sodium sulfate, 2-4 Ma .-% sodium metasilicate and 2-6 Ma .-% water is used for washing , In the formulation according to the invention fragrances can be incorporated if necessary. The advantages over the current state of the art are that it has been possible to find a formulation which, in addition to a high washing effect, has a high bleaching capacity even in the low-temperature range and thus also has ecological and, because of the lack of phosphate, ecological advantages. Another advantage is the good storage behavior of the formulation according to the invention. The following example is intended to explain the invention.

example

It is a detergent formulation of the individual components

4% by mass of nonionic surfactant (polypropylene glycol) 4% by mass of alkylsulfonate (alkylbenzenesulfonate)

0.5% by weight of carcass fatty acid (triglyceride of palmetic, stearic and oleic acid) 8% by weight of chloramine T (p-toluenesulfonylchloramide-Na-trihydrate) 3.0% by weight of sodium carbonate 31% by weight of aluminosilicate 0, 5% by mass of aminotrimethanephosphonic acid 3.0% by mass of urea '.''S .-% borax

2% by weight of carboxymethylcellulose 36% by mass of sodium sulfate

3% by mass of sodium metasilicate. 9H ₂ O

3% by weight of water

manufactured and packaged.

The active chlorine content of the detergent according to the invention is 92% after a storage time of 2 months.

In a detergent formulation prepared according to DE-OS 1,931,329, the active chlorine content after 2 months is 86%.

The active chlorine content is determined according to:

"Maßanalyse" by G, Jander and K. F.Jahr

Collection Göschen Bd.221 / 221 a

Walter de Gruyter & Co. Berlin 1961 p.77

Application properties at 30 ° C according to TGL 29 789/01:

Property example according to the invention

Solution DE-OS1931329

Washers 44% 45%

Bleaching ability (nettle tissue soiled with red wine and tea) 15.1% 10.3%

The detergent produced according to the invention has a significantly higher bleaching action at approximately the same washing capacity in the temperature range 30-40 ° C. than the previously known detergent formulations.

Documents contemplated DD AP 284245, C11D3 / 06

Claims (1)

Solid phosphate-free low-temperature detergents with high bleaching effect in the temperature range 30-40 ⁰ C based on conventional detergent ingredients and chloramines, characterized in that the mixture of: 2-6Ma .-% nonionic surfactant 2-6Ma .-% alkylsulfonate 0.3-0.7 mass% animal body fatty acid 6-10 mass% chloramine T (p-toluenesulfonylchloramide-Na-salt trihydrate) 2-4 Ma. % Soda 25-35% by mass aluminosilicate 0.2-0.6% by mass aminotrimethanephosphonic acid 2-4% by mass urea 1-3% by mass borax 1.5-2.5 wt.% Of carboxymethylcellulose 30-40 wt.% Of sodium sulfate 2-4 wt.% Of sodium metasilicate 2-6 wt.% Of water