DD295186B5 - CLEANING COMPOSITION AND METHOD OF MANUFACTURING - Google Patents

Abstract

A cleaning composition with a bleaching and disinfecting action, consisting of peroxide bleach, corresponding bleach activator and substances assisting the cleansing action is described. High bleach concentrations are stabilised in the presence of a bleach activator by the dust-like portions of the bleach being taken up in the pores of a basic detergent. The cleaning composition can be used both directly on the textile fabric and as additive to wash liquors with conventional detergents, especially those without a bleaching system, even at temperatures from 20 DEG C.

Description

The invention relates to a bleaching and disinfecting detergent composition which can be used alone or in combination with conventional detergents both directly on the object to be cleaned and as an additive to a wash liquor, wherein the bleaching and disinfecting effect is already achieved at temperatures above 2O ⁰ C. , In addition to general soiling, textiles often have limited surface areas but are subject to intensive contamination, the removal of which requires special measures which go beyond the cleaning capacity of a normal wash liquor (SÖFW115, 380 to 382, 391 to 396). In particular, the detergents to be used for sensitive textiles in the low-temperature range show in such cases an insufficient cleaning effect, which is enhanced by the absence of bleaching systems, especially in liquid detergents.

It is known to improve the cleaning effect of conventional detergents by the specific addition of bleaching compositions, sometimes also referred to as stain salts. In order to achieve a bleaching and disinfecting effect even in the low-temperature range, a combination of peroxidic bleaching agent and a bleach activator, from which the actual bleaching and disinfecting agent is formed, is always necessary. Thus, a series of detergents having an increased bleaching effect and having high bleaching agent concentrations but not exceeding 4% by weight of bleaching activator constituents are described (for example EP 283 252, DE-OS 3 615 788, CH-PS 662 360, CH-PS 606411). , Since, however, the bleaching action in the low-temperature range is determined only by the bleach activator concentration or by the active oxygen which is accessible in this way, the effect of the mixtures mentioned does not go beyond the bleaching detergents or disproportionately large amounts must be used.

It is also known, about 25Ma .-% sodium perborate with 10 to 20Ma .-% bleach activator, especially tetraacetylethylenediamine (TAED), in the presence of sequestering agents (US Patent 4412950, EP122 763), surfactants and stabilizers (CH-PS 606411 , DE-OS 3623914) and with the addition of urea and optionally sodium sulfate (DE-OS 3,639,115) bring together. In addition, it is known to use liquid or easily meltable bleach activators (EP 122763) and an excess of bleach activators (US Pat. No. 3,789,002) for such cleaning compositions. The most important concern of these technical solutions is the suppression of desired in the wash liquor rapid reaction between the bleaching agent and the bleach activator in the storage of the corresponding bleaching composition, for example in a cardboard box, at room temperature and an air humidity up to 80% rel. According to this objective, almost exclusively the use of water-free sodium perborate is required (US Pat. No. 4,422,950, DE-OS3639115, DE-OS 3623914, CH-PS 606411, EP 122763).

Although US Pat. No. 3,789,002 uses sodium perborate tetrahydrate as a bleaching agent (NaBO.sub.3.times.4H.sub.10 ₎ , a bleach activator granulated in high dilution must be used in excess, with almost 80% of the bleaching effect having disappeared after 5 days of storage.

Other technical solutions require high levels of surfactants, in particular Nonionics up to 40% by mass (US Pat. No. 4,422,950) Reaction between bleaching agent and bleach activator largely suppress. Also by jointly extruding the Bleach Natrlumperboratmonohydrat with a bleach activator at about 6O ⁰ C and nonionics as a binder should be a stable Detergent additive are obtained (DE-OS 3623914). Other diluents for the reactive components are Salt combinations (DE-OS 3639115), which have up to 40 ⁰ C no phase transition. Detergents based on bleach activators, such as phthalic anhydride (CH-PS 654021), quaternary Ammonium compounds (EP303520), chlorine-containing heterocycles (DE-OS 2655971, EP328697) and porphines (DE-OS

2948923), represent because of the low development of active oxygen, usually only under special conditions, no technically and economically acceptable solution.

For the known technical solutions for a detergent composition was a direct use on the

contaminated textiles are not described.

The aim of the invention is a bleaching at room temperature directly to textiles or b) i addition to a wash liquor and

disinfectant detergent composition, which is chemically stable even after prolonged storage and shows a virtually unchanged effect.

For dia invention dia task, high concentrations of peroxidic bleaches and suitable Bleach activators together so together in a detergent composition that as another Components are needed only those that the bleaching and disinfecting process from the bleach and the Bleach activator formed percarboxylic acid, and these components suitably a Interaction, in particular between the dust-like proportions of the bleaching agent with the bleach activator

Stop, so that formation of water by decomposition of the bleaching agent and thus accelerating the decomposition can not occur.

This object is achieved by a detergent composition with bleaching agent and disinfecting effect in the Low temperature range from 2O ⁰ C from peroxide bleach and bleach activator granules and others

Substance-typical substances for use directly on the textlien tissue and / or as an additive to the wash liquor from conventional detergents according to the invention solved in that it consists of the mixture of a part by weight of the spray-dried mixture of surfactants, builders and other detergent-specific substances with a specific

Surface of 0.8 to 2, OmVg, a pore volume of 0.4 to 0.9 cm ³ / g and a pore diameter of 0.006 to

0.02mm for 50 to 60% of all pores, 0.3 to 1.1 parts peroxide bleaching agent, optionally 0.01 to 0.05 parts by weight liquid or molten nonionic surfactants and 0.2 to 0.7 parts bleach activator granules having an active ingredient content of at least 70%.

In the indication of the pore volume of 0.4 to 0.9 g / cm ³ was of an average bulk density of about

0.45 cmVg.

The detergent composition according to the invention is prepared by spraying in a mass portion of a spray-dried Mixtures of surfactants, builders and other detergent-specific substances with a specific surface area of 0.8 to

2, OmVg, a pore volume of 0.4 to 0.9 cmVg and a pore diameter of 0.006 to 0.02 mm for 50 to 60% of all

Pores are incorporated by intensive mixing 0.3 to 1.1 parts by mass of peroxide bleaching agent and subsequently in

of the mixture thus obtained 0.2 to 0.7 parts by weight of bleach activator granules having an active substance content of at least 70

% By weight and, if appropriate, from 0.01 to 0.05 part by weight of liquid or molten nonionic surfactants. It is still possible by the process according to the invention, the mixture of the peroxidic bleach and

spray-dried mixture of surfactants, builders and other detergent-typical substances 0.01 to 0.05 parts by weight liquid or melted non-ionic surfactants sprayed and evenly distributed, so that a nearly uniform surfactant film on the mixture of bleach and St. WM (standard detergent) is formed.

A standard detergent is produced by spray-drying a solution or suspension of surfactants, phosphates, zeolites, Silicates, soda, soap and carboxymethylcellulose. To improve the flowability are often adjusting agents, such as

For example, sodium sulfate, added. By operating in the spray-drying can be products with significant

Create texture differences. The peroxidic bleaching agent used in the process according to the invention is preferably sodium perborate tetrahydrate

(NaBO ₃ 4H ₂ O). However, it is also possible to use other peroxide bleaching agents, such as

Sodium perborates with other water of crystallization or sodium carbonate peroxohydrate. The grain size of the peroxidic Bleaching agent should be at most 0.5 mm, dust-like components have no influence on the inventive solution. The bleach activator is used by the novel process exclusively in granulated form, wherein

At least 80% should be in the particle size range of 0.5 to 1.6 mm. Because of the good solubility, the rapid and selective perhydrolysis and the high peracetic acid concentration that can be achieved, 1.5 diacetyl-2,4-dioxohexahydro-1,3,5-triazine granules (DADHT granules) are preferably used. However, it is also possible by the process according to the invention, other bleach activators, such as tetraacetylethylenediamine (TAED), tetraacetylglycouril (TAGU) or

Pentaacetylglycose (PAG) in granulated form to use. The spray-dried mixture of typical detergent ingredients (St.-WM) will exceed the requirements Surface and pore structure no further conditions provided. It can in a known way from a

corresponding slurry can be prepared, for example by spraying at a slurry concentration of 60 to 65% by weight, a Trock.iungstemperatur of about 9O ⁰ C and a temperature of the drying air of 280 to 300 ⁰ C.

For the incorporation of the peroxide bleaching agent in the spray-dried St. WM are no special technical Facilities required. However, it is desirable by the process according to the invention, the spray-dried St.-WM and

to mix the sodium perborate tetrahydrate intensively, but gently mechanically, so that the bleach dust penetrates the pores of the body

St. WM can penetrate. The possible application of nonionic surfactants to the mixture by the process according to the invention Bleaching agent and St.-WM is made by spraying the nonionics in liquid form on the sufficiently homogenized Blend of bleach and St.-WM. As nonionic surfactants, preference is given to using fatty alcohol ethoxylates and / or alkylphenol ethoxylates.

The storage stability and the cleaning action of the bleaching and disinfecting detergent compositions according to the invention were tested both directly on the fiber or textiles and as an additive to wash liquors of conventional detergents. These tests are carried out under the following conditions.

The chemical stability of the detergent composition was subjected to both a short and a long-term storage test:

Kind of exam Short-term test Long-term test storage conditions temperature 40 25 rel. Humidity% 80 75 Storage period day 14 185 Type of storage open glass bowls cardboard mounts analytical control BM content + + BA content + +

BM bleach BA = bleach activator The determination of the bleaching effect was carried out as follows:

- on the fabric directly

The pieces of fabric with various soils were evenly moistened before treatment. After that was

applied to a circular area with a diameter of approx. 35mm 2g of the detergent composition. The residence time was at a temperature of 20 to 25 ⁰ C 30 minutes. Thereafter, the detergent mixture was rinsed off and the

Fabric dried in air. The evaluation was made by visual assessment of the removal of the soiling. As afflictions were used Bleaching test tissue according to TGL 29799/05 Red wine, tea, coffee, Johannisr and cocoa fabric according to TGL 27448

- as an additive to a wash liquor.

In a household washing machine, the bleaching capacity of the detergent compositions was tested alone or as an additive to wash liquors from heavy duty detergents, 60 ° C detergents and liquid detergents. The results were evaluated according to TGL 29799/05.

Ausführungsbelsplele

In a batch mixer, the St.-WM is presented and after commissioning the mixer screw, the bleach was added to the mixer and incorporated into the St. WM for 30 minutes. Subsequently, the liquid, non-ionic surfactant is sprayed over 2 evenly distributed over the length of the batch mixer nozzles, the mixer remains in operation. After application of the nonionic surfactant to the bleach and STM blends, mixing is continued for a further 10 minutes. Only then is the granulated bleach activator added and evenly distributed over 10 minutes in the detergent composition. >

The step of "applying" the nonionic surfactant may be omitted if such addition to the detergent composition is not intended

 For the mass ratios of the individual examples and the test results cf. Table 1 and 2I

Legend to the examples

- St.-WM composition

Alkylbenzenesulfonates 11.0Ma .-% Nonionics 2.8 Ma .-%

Sodium tripolyphosphate 44.9% by weight of silicates 7.0% by mass

Soap 6,9Ma .-%

Sodium sulfate 16.5% by mass Sodium carbonate 5.7% by mass

Carboxymethylcellulose 1.0Ma .-%

opt. Brightener 0.2Ma .-%

Water Restzu100% Texture Type of St. WM I Il III

specific surface mVg 0.9 1.2 1.6 Pore volume in cmVg 0.6 0.75 0.85 Pore diameter% im Range of 0.006 to 0.02 mm 51 53 56

A = NaBO ₃ X 4 H ₂ O 98% B = Na ₂ CO ₃ X 1.5 H ₂ O ₂ 84% pure C = cia-cu-fatty alcohol ethoxylate monoEO D = Cj-alkylphenol ethoxylate with ca.eEO E = NaBO ₃ × 3H ₂ O99% BA = bleach activator BM = bleach Table 1

example 1 2 3 4 5 Detergent composition off BM Art A A A A A Mengekg 3.5 3.0 2.5 3.0 3.0 BA Art DADHT DADHT DADHT DADHT DADHT Active ingredient content% 80.0 80.0 80.0 80.0 80.0 Mengekg 2.1 1.9 2.0 2.1 2.1 St.-WM Art I I I Il Il Mengekg 4.4 5.1 5.5 4.6 4.6 NonionicsArt - - - C D Mengekg - - - 0.3 0.3 Shelf Life Loss of BM in% rel. after short-term storage 23.8 5.0 4.6 5.0 2.4 after long-term storage 19.1 8.8 7.0 6.5 6.8 Loss of BA in% rel. after short-term storage 26.2 14.5 1.1 16.5 13.3 after long-term storage 20.3 13.6 9.6 8.2 9.4 Bleaching capacity TGL 29 799/05 in% Bleach test fabric 218 120 219 226 213 red fabric 92 91 95 94 95 Bleaching action on the tissue directly soiling Red wine "i Tea / very Well Well very very Coffee Γ Well Well Well Currant ^ J cocoa Well Well Well Well Well

Table 2

example 6 7 8th 9 Il 4.6 10 Detergent composition off C BM Art A B A A 0.3 e Quantity kg 3.5 3.0 3.0 3.0 2.7 BA Art DADHT DADHT TAED TAED DADHT Drug content% 75 80 85 85 7.8 80 Quantity kg 2.5 2.2 1.8 2.1 11.0 2.0 St.-WM Art III I I III Quantity kg 3.5 4.8 5.2 8.5 5.3 NonionicsArt C - - 9.8 - Mengekg 0.5 - - - Shelf Life 215 Loss of bleach in% rel. 95 after short-term storage 17.6 20.8 7.4 8.4 after long-term storage 16.2 16.8 8.7 12.9 Loss of BA in% rel. after short-term storage 12.7 24.7 10.5 7.8 after long-term storage 18.1 18.5 12.4 12.0 Bleaching capacity TGL 29 799/05 in% Bleach test fabric 184 210 177 162 red fabric 94 96 94 91

Continuation of Table 2

example 6 7 8th 9 10 Bleaching action on the tissue directly soiling Red wine * ~) Tea / very Coffee Γ Well Well moderate moderate moderate Currant _) cocoa Well Well moderate moderate moderate

Claims (5)

1. Detergent composition with bleaching and disinfecting effect in the low temperature range from 20 ⁰ C from peroxide bleach and bleach activator granules and other detergent-type substances for use directly on the textile fabric and / or as an additive to the wash liquor from conventional detergents, characterized in that it consists of a mixture of a part by weight of the spray-dried mixture of surfactants, builders and other detergent-specific substances having a specific surface area of 0.8 to 2.0 m ² / g, a pore volume of 0.4 to 0.9 cm ³ / g and a pore diameter of 0.006 to 0 , 02 mm for 50 to 60% of all pores, 0.3 to 1.1 parts by weight of peroxide bleaching agent, if necessary 0.01 to 0.05 parts by weight of liquid or molten nonionic surfactants and 0.2 to 0.7 parts by weight of bleach activator granules with an active ingredient content of at least 70% by mass. 2. A process for the preparation of a detergent composition according to claim 1, characterized in that in a mass portion of a spray-dried mixture of surfactants, builders and other detergent-specific substances having a specific surface area of 0.8 to 2.0m ² / g, a pore volume of 0, 4 to 0.9 cm ³ / g and a pore diameter of 0.006 to 0.02 mm for 50 to 60% of all pores by intensive mixing 0.3 to 1.1 parts by mass of peroxide bleach incorporated and that then in the mixture thus obtained 0, 2 to 0.7 parts by weight of bleach activator granules having an active ingredient content of at least 70% by weight and, if appropriate, from 0.01 to 0.05 parts by weight of liquid or molten nonionic surfactants are distributed. 3. The method according to claim 2, characterized in that sprayed onto the mixture of peroxidic bleach and spray-dried mixture of surfactants, builders and other detergent-typical substances 0.01 to 0.05 parts by weight of liquid or molten nonionic surfactants and evenly distributed. 4. The method according to claim 2, characterized in that is incorporated as peroxidic bleaching Natriumperborattetrahydrat. 5. The method according to claim 2 and 4, characterized in that the bleach activator is a granulated 1,5-diacetyl-2,4-dioxohexahydro-1,3, o-triazine with 80% of the granules in the particle size range 0.5 to 1.6 mm is used.