NO132456B - - Google Patents

Abstract

Animal feed with a long shelf life and resistance to bacterial and mold attacks.

Description

Concentrated, liquid bleach and detergent in the form of stable,

pourable emulsions, suspensions or coacervates.

The invention relates to liquid bleaching and

detergents in the form of stable, pourable

emulsions, suspensions or coacervates.

Concentrated, liquid detergents have

often the disadvantage that one or more of the components separate out when the detergent

is at rest or that no one is ready

solution, the preparations must be diluted

to the concentration required for practical use. Moreover, so far it has not

proved possible by the addition of a bleaching agent

substance to a concentrated, liquid detergent to obtain a product which, when stored, retains its bleaching properties to a sufficient extent and in this respect for

specific application purposes, in particular to

washing textiles, can be equated with those

known solid bleaching agents that contain

sodium perborate or sodium percarbonate.

It has now been shown that, under certain conditions, concentrated, liquid and bleaching detergents can be produced in

form of pourable suspensions, emulsions

or coacervates which have only a small tendency to separate the components,

and on dilution form clear solutions.

The invention thus relates to concentrated, liquid bleaching and washing agents

form of stable, heatable emulsions, suspensions or coacervates, as calculated

on the weight of the liquid agent contains the following components;

a) at least 1 percent of one or more detergent active substances A of the general

formula:

where R= an alkyl group with 6-18 carbon atoms, or an alkylaryl group with 6-18 carbon atoms in the alkyl group.ni, M is an alkali metal, ammonium or a substituted ammonium group, n = 2 or 3, m = a small whole number from 1— 8, preferably 2-4. b) at least 5 percent of a condensed phosphate. c) at least 0.3 percent of a carboxymethylcellulose. d) at least 0.2 percent hydrogen peroxide. where the total amount of the components under a) and b) is at least 10 percent.

The agent according to the invention contains at least 1 percent of preferably a mixture of detergent active substances of the general formula indicated above in which the average value of m = 2 or more, preferably 2-4. Particularly suitable are sodium salts of

sulfated polyethylene glycol monoalkyl ethers

of the general formula:

where R is a saturated alkyl group with 6-12

respectively 12-18 carbon atoms and m is an integer from 2-3, resp. 3-4.

It has been found that these new bleaching and washing agents are particularly stable with regard to durability and their bleaching effect during storage, especially when a stabilizer for hydrogen peroxide is added to the liquid preparation.

Suitable washing active substances of type A are: The sodium salt of the sulphated di-ethylene glycol monolauryl ether of the formula: the sodium salt of the sulfated diethylene glycol monoalkyl ether where R is a mixture of saturated alkyl groups, such as occur in fatty alcohols derived from coconut fat; its sodium salt. sulfated tetraethylene glycol monoalkyl esters of the formula:

where R' is a mixture of saturated alkyl groups, such as occur in hardened fatty alcohols derived from tallow.

The salt of the sulfated tetraethylene glycol mononionyl phenyl ether of the formula:

The amount of concentrated phosphates, e.g. sodium pyrophosphate and/or sodium tripolyphosphate, may constitute 5-30 per cent, preferably 9-25 per cent, of the weight of the liquid agent, whereby the total quantity of these phosphates and the detergent active substances is kept at least at 10 per cent.

The dirt suspending agent can e.g. be a carboxymethylcellulose of any common degree of substitution, e.g. 0.4-1.1, and is added in the usual small quantities of at least 0.3 per cent.

The preparations contain hydrogen peroxide in an amount of at least 0.2 percent and generally in a. amount from 0.5 to 3 percent by weight of the solution together with a small amount1 of a stabilizer for hydrogen peroxide, e.g. sodium p-hydroxybenzoate, sodium nitrilotriacetate or sodium ethylenediaminetetraacetate.

The preparations may also contain one or more other detergent active substances B of the anionic type, e.g. an alkyl sulfate derived from a fatty alcohol with 8-18, preferably approx. 12 carbon atoms in the molecule or an alkylaryl sulphonate with 8-16 carbon atoms in the alkyl group, preferably an alkylbenzene sulphonate with approx. 12 carbon atoms in the alkyl group. Salts of acylated oxy- or amino-sulfonic acids can also be used.

Preferably used washing active substances of type B are, among other things, a. sodium tetrapropylene benzene sulphonate, sodium clodecyl benzene sulphonate, sodium pentapropylene benzene sulphonate, sodium lauryl sulphate and sodium oleyl sulphate. The terms "tetrapropylene-benzene" and "pentapropylenebenzene" refer to alkylbenzenes in which! the alkyl groups are derived from propylene tetramers and propylene pentamers.

The presence of another washing active substance B generally has advantages. The ratio A:B is between 1:1 and 1:6, preferably between 1:2 and 1:4, while the total amount of detergent active substance can vary from 5-25 per cent, preferably from 6-20 per cent of the weight of the liquid detergent.

You can also add other common ingredients for detergents such as fatty acid mono- or diethanolamines and optical brighteners and other inorganic salts, whereby it is ensured that the preparations do not contain any ingredients that can react with hydrogen peroxide or catalytically speed up the splitting of this during the prevailing conditions during the product's storage. The preparations must also not contain any sodium silicate.

During the production of the liquid bleaching and washing agent according to the invention, all components can be subjected to an oxidizing pre-treatment, preferably with hydrogen peroxide to ensure that they do not contain any substances that are easily oxidized by hydrogen peroxide. Preferably, however, the detergent according to the invention is prepared from untreated components using a small excess of hydrogen peroxide and the products are allowed to stand for some time, at least a few weeks, until they have become stable with respect to further decomposition of the hydrogen peroxide. The process can be accelerated to a period of a few hours if one adds a small amount of a compound that accelerates the oxidation, e.g. benzoyl or acetyl esters of sodium phenol sulphonate or fatty acid anhydrides, e.g. acetic anhydride or increases the temperature.

The preparations according to the invention can be prepared by simply mixing the ingredients in water. In principle, the main components (a), (b) and (c) can be added in any order, however, as a rule, component (d), i.e. the hydrogen peroxide, is added during the last stage of the mixture.

In many cases, however, it has proven to be advantageous to add the components in a specific order, namely as follows: A small amount, e.g. 10 percent of the phosphate to be added is mixed at an elevated temperature, e.g. 50-60°C, with the dirt suspending agent in water. After the liquid has become homogeneous, the main amount of the phosphate is added, e.g. 60 per cent, at a somewhat higher temperature, e.g. 70-80°C with stirring. The detergent active substance A and possibly the detergent active substance B are then added and likewise the fatty acid mono- or diethanolamide, during which the temperature must not drop below 70°C. The rest of the phosphates are then stirred into the mass, after which the liquid is cooled to approx. 50°C. Hydrogen peroxide is added in an excess of approx. 5 per cent in relation to the desired concentration in the finished preparation and then cools to 40°C. After the addition of the oxidation-promoting substance, the liquid is allowed to stand for some time until no further decomposition of the hydrogen peroxide takes place. You can then add the other ingredients such as optical brighteners, fragrances, stabilizers for hydrogen peroxide and possibly colourants. Finally, the liquid is homogenized in a suitable device, e.g. in a colloid mill.

The products according to the invention are stable, pourable, liquid emulsions, suspensions or coacervates which only slightly separate when the liquid is at rest. When diluted to the concentrations in which these detergents are generally used, clear liquids are obtained. Preferably, the detergent is used in a dilution on

1:60, resp. 1:250, preferably from 1:100 to 1:180.

In the following, the invention will be explained in more detail in connection with some examples in which all quantities are stated in percentage by weight.

These mixtures were allowed to stand for two hours before the optical brightener and p-oxybenzoic acid were added; no more oxygen was then formed.

Claims (6)

Example 5. Subsequent compositions were prepared in the same way as according to example 1. Example 6. Subsequent compositions were apparently clear, but from the fact that they exhibited a Tyndall effect, it follows that they were in reality emulsions, suspensions or coacervates. They were produced in the same way as according to example 1. 1. Concentrated, liquid bleaching and washing agent in the form of stable, pourable emulsions, suspensions or coacervates which, calculated on the weight of the liquid agent, contain the following ingredients: a) at least 1 percent of one or more detergent active substances A of the gen- real formula: where R = an alkyl group with 6-18 carbon atoms or an alkylaryl group with 6-18 carbon atoms in the alkyl group, M is an alkali metal, ammonium or a substituted ammonium group, n = 2 or 3, m = a small whole number from 1-8, preferably 2-4, b) at least 5 percent of a condensed phosphate, c) at least 0.3 percent of a carboxymethyl cellulose, d) at least 0.2 percent of hydrogen per oxide, where the total amount of the components under a) and b) is at least 10 percent. 2. Liquid bleaching and washing agent as specified in claim 1, characterized in that the washing active substance A is the sodium salt of a sulphated polyethylene glycol mionioalkyl ether of the formula: where R = a saturated alkyl group with 6-12, resp. 12-18 carbon atoms, m = 2 or 3, resp. 3 or 4. 3. Liquid bleach and detergent as specified in claim 1-2, characterized in that it contains p-hydroxybenzoic acid, sodium nitrile acetate or sodium ethylenediamine tetraacetate as a stabilizer for hydrogen peroxide. 4. Liquid bleach and detergent as stated in claims 1-3, characterized in that, in addition to (a), it also contains one or more anionic detergent active substances B, preferably higher alkyl sulphates, such as aliphatic alkyl sulphates with 8-18, preferably approx. 12 carbon atoms, or higher alkylarylsulfonates, e.g., alkylarylsulfonates with 8-16, preferably approx. 12 carbon atoms in the alkyl group, and that for- the ratio between the detergent active substances A and B is between 1:1 and 1:6, preferably 1:2 and 1:4. 5. Liquid bleach and detergent as stated in claim 4, characterized in that the total amount of the washing active substance is between 5 and 25 percent by weight, preferably between 6 and 20 percent by weight of the liquid product. 6. Liquid bleach and detergent as specified in claims 1-5, characterized in that it has the following composition: