DE2320527A1 - DETERGENT CONTAINING PRODUCTS - Google Patents

Description

Patent attorneys
Dr. ! ng. A. v & * i dar Warth 1 8th APR.

ei Hamburg BO

Wilatorfer Strasse 32 C714 Ldn.

UNIIiEVER NV Burgemeesters ¹ Jacobplein 1, Rotterdam / Holland

Detergent containing agent

Priority: April 24, 1972, Great Britain, No. 18812/72

The invention relates to detergent-containing agents, in particular to those intended for washing textiles are.

Detergent-containing agents contain active detergents and builders as their essential components. the The most common type of builder is sodium tripolyphosphate been, but in recent years it has been suggested that the use of such a builder for eutrophication inland waters. It has therefore been suggested that materials other than phosphorus-containing than Builders could be used, or at least that reduces the amount of phosphorus in a detergent-containing agent could be.

The use of orthophosphate as a builder was suggested in British patent applications 40985/71 and 47585/71. The term orthophosphate is used there

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to define a material which is the orthophosphate ion in the solution delivers. In a detergent-containing approach, such material will usually be present in a partially neutralized form, that is the monohydrogen or dihydrogen orthophosphate The sodium salt

it
is usually used, but / is also possible, potassium or

To apply ammonium salts,

It has now been found that detergent-containing agents built up with orthophosphate as a builder, which act as active materials, are called benzene sulfonate and / or contain an alcohol sulfate, can be improved by that in addition in addition to the active material mentioned, either an active ifonionic, for example an ethoxylated alcohol, or a Alkyl ether sulfate can be used. It is believed that the improvement of the cleaning power, which is brought about by the additional active material, this furtheri Thanks to active material, which prevents the precipitation of the alkaline earth salts of the active detergent material. It is well known that alkaline earth ions are present in the for the production of "Water available for washing liquor" It is also assumed that the calcium salts of alkylbenzenesulfonates by some mechanism in association with the precipitated Calcium orthophosphate salts are precipitated or deposited together. Substituting a G-song of the defined classes of substituents prevents the active material is removed from the wash liquor in an irreversible manner. The phrase "irreversibly removed is "is used because the active material is insoluble

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Liches calcium salt is removed, which from the Waschsystein Remains removed even if the calcium ion concentration is lowered by precipitation of the caloium orthophosphate. The effect is in chemical terms reversible, but not for the duration of normal washing processes. The active substances are usually present as sodium, potassium or ammonium salts, preferably as the former »

The full approach can use other active detergents as well contained, for example as they are in the books "Surface Active Agents & Detergents ", Volumes I and II by Schwartz, Perry and Berch are described *

The active nonionic and alkyl ether sulfate are referred to here as the additional active ingredients, but it should be noted that they can instead be viewed as replacement active material which is a part of the original active material, i.e. the alkyl benzene sulfonate or the alcohol sulfate. replace _e

A detergent-containing agent according to the invention is contain from about 5 to about 30% by weight orthophosphate material and from about 10 to about 45% by weight total active Detergent material.

Approaches according to the invention are being developed for use at different usage concentrations, e.g. for usage concentrations as low as 0.15% or as high as 0.6% weight / volume. The aforementioned usage concentration defines the amount of active substance present and that

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Ratio of active substance to builder in the batch,

The invention also creates a detergent-containing agent Orthophosphate as a builder, which is an active detergent mixture contains, which is selected from the groups:

1.) Alkyl (Co-G ₂₀ ) benzenesulfonate and active nonionic in the ratio of 10: 1 Ms 1: 5, the sulfonate in an amount of 5 ° to 30% of the total and the nonionic in an amount of V / o Ms 15? *> is present;

2.) Alcohol sulfate of the formula R CH ₂ SO ^ M, where R is an alkyl radical with 12 Ms 18 carbon atoms, and alcohol ether sulfate of the formula R GHp (0Ε) _χ SO, M, where R is an alkyl radical with 10 Ms 16 carbon atoms and χ is 1 Ms 5, in a ratio of 2: 1 Ms 1:10 (preferably 1: 1 Ms 1: 3), and wherein M is an alkali metal or ammonium ion. Preferably the alkyl radical of 14 Ms has 18 carbon atoms.

Preferably the ratio of alkylbenzenesulfonate to the nonionic is in the range of 3: 1 Ms 1: 3, in particular 1: 1.

Alkyl benzene are examples of active class welct, precipitate as Calßiumsalze ,, is preferably a linear alkyl compound used to obtain improved biodegradability and, in particular, linear secondary alky! Compounds used "The sodium salt is most commonly used, but other alkali _r ammonium - Or substituted ammonium salts can also be used. The alkyl chain length is from Cg to C ₂₀ , preferably

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G ^ q "to C.g

The alcohol sulfate is of the general formula R OH ₂ SO, M correspond to, wherein R is an alkyl radical of C ₁ * Ms O ₁₈ is "Examples are the sulfation of Dobanol 45 (which is a mixture of C ^ to C ₁₅ branched chain alcohols containing), and Algal alcohol «M will usually represent the sodium or potassium ion for this active material and the ether sulfate.

The active nonionic used will preferably be an ethoxylated long chain derivative of a monohydric or dihydric alcohol. The chain length of the alcohol will be from C ₈ to C ₂₂ , preferably from C ₁₀ to C ₁₈ , and the degree of ethoxylation will be from 5 to 25, preferably from 5 to 15%.

The agent according to the invention is also other conventional ones Contain materials, e.g. silicates, hemophosphate enhancers, foam depressants, anti-redeposition agents, oxygen Lead-releasing agents or bleaching agents releasing chlorine Agents and inorganic salts, fluorescent substances, perfumes, enzymes, germicides and dyes.

Other builders that may be present include, in particular, another so-called precipitating builder, which form insoluble calcium salts, for example sodium carbonate, sodium salts of long-chain alpha-sulfonated Monocarboxylic acids and sodium alkyl and alkenyl succina te and -inalonates, and analogous connections, as well, too sequestering builders, which can be either organic or inorganic, for example sodium pyrene

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phosphate, sodium nitrilotriacetate, sodium ethylenediamine tetraacetate, Sodium citrate, latrium tartrate, latrium malate, Sodium hydrofuran tetracarboxylate, irisodium carboxymethy 1-oxysuccinate, Sodium oxydiacetate, sodium oxydisuceinate, and also polyelectrolyte builders such as sodium polyacrylate and mixed polyethylene malate.

The inventive detergent-containing agents can after can be produced in any common way of working, such as those used for the production of detergent-containing powders, For example by slurrying and spray drying. Although the term powder has been used herein, it extends the invention also applies to other physical porms, e.g. Granules, pieces and liquids «,

The following examples illustrate the invention. example 1

The approaches were tested at a product use concentration of 0.1 fo Ge weight / volume. The other test conditions were as follows:

Test wash: cotton fabric, soiled with

artificial sebum

Apparatus: Terg-O-Tometer from US Testing

Go.Inc.

Wash volume : 1 liter of water in each apparatus

cups

Stirring: 90 revolutions per minute

Water hardness: 18 ⁰ H Ca: Mg was 2: 1

Washing temperature and time: 50 ⁰ C - 10 mins rinse temperature and time: 37 ⁰ C - 1 minute

Fleet / Wasohgut ratio: 126 to 1

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Table I.

Linear C ₁₂ alkyl ^C 11 ~ ^G 15 ^secondary cleaning benzosulfonate (%) alcohol 9 ÄO (%) like (%)

16 0 37

12 4 51

8 8 60

4 12 57

0 16 49

Sodium orthophosphate 20%
Alkaline sodium silicate 10? Έ

Table II

Approaches (A, B and 0) at levels of 20 wt% active ingredient and 20 _o $ sodium orthophosphate were prepared and compared under the above washing conditions. The active ingredients were:

A: 16% dodecylbenzenesulfonate with 4% G ₁₁ -O ^ secondary alcohol 9Ä0

B: 16% dodecylbenzenesulfonate with 4% Dobanol 25 3Ä0

G: 20% dodecylbenzenesulfonate

Bs was found that batches A and B had a greater detergency than. · Approach C owned.

Example 2

Mixtures of Aktivdetergentien with contents of alcohol sulfate and Alkyläthersulfat were tested using the test method of Example 1. The active substances used were of secondary alcohol (C ₁₄ -0 _{15) sulfa} -fc

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secondary AlkOhOl- (O ₁₂ ~ ^G 15) ~ 5A0-sulfate. The starting alcohols were obtained under the trade name Dobanol. The percentages of the two active substances and the detergency found follow in Table III.

Table III

Alcohol sulfate (#) Alkyl ether sulfate ($ >) Cleaning power 16 0 79 12th 4th 77 8th 8th 83 4th 12th 87 0 16 81

3 0 9 8 Λ 6/1 0 S 9

Claims (1)

Claims A detergent-containing composition comprising from about 5 "to about 30% by weight of an orthophosphate builder and of about 10 to about 45 weight percent active detergent material, thereby marked that the active detergent material !. a mixture of active detergents selected from the Groups: 1.) Alkyl (Cg-C ₂₀ ) benzenesulfonate and active nonionic in the ratio of 10: 1 to 1: 5, the sulfonate in an amount of 5 to 30 $ of the total and the nonioni in an amount of 1 to 15 $ is; 2.) Alcohol sulfate of the formula R CH ₂ SO. M, where R is an alkyl radical with from 12 to 18 carbon atoms, and alcohol ether sulfate of the formula R CH ₂ (OE) _x SO ₄ M, • j wherein R is an alkyl radical of 10 to 16 carbon atoms and χ is from 1 to 5, in a ratio of 2: 1 to 1:10, and wherein M is an alkali metal or ion
Ammonium / means contains « 2. Composition according to claim 1, characterized in that the active detergent material in an amount from 10 to 25 $ is present « 3. Means according to one of the preceding claims, characterized characterized in that the ratio of alkylbenzenesulfonate to the active nonionic is from 3: 1 to 1: 3. 309846 / 10S9 232052? 4o means according to one of the preceding claims, characterized in that the. .active monionic an alcohol (G _Q to Cp (P * ethoxylated. with from 5 Ms 25 ethylene oxide units, is _e 5 ο means according to claim 4, characterized in that that the alcohol has 10 to 18 carbon atoms possesses and ethoxylated with 5 to 15 ethylene oxide units is" 6. Means according to claim 1, characterized in that that the alkyl radical of the alcohol sulfate contains from 14 to 18 carbon atoms. 7. Agent according to claim 1 or 6, characterized in that the ratio of alcohol sulfate to alcohol ether sulfate is from 1: 1 to 1: 3. 09846/1059