DE1060538B - cleaning supplies - Google Patents

Description

GERMAN

The invention relates to soap-free cleaning agents containing alkyl sulfates and relates to especially the improvement of the foaming power of such agents.

It is known from French patent specification 1,066,850 that the addition of acylphenyl ethers is more certain polyhydric alcohols (including ethylene glycol) with 6 to 10 carbon atoms in the acyl group many detergents reduce the durability of the foam of such agents during normal washing Concentrations improved. The addition of lauroylphenylethylene glycol ether (with 12 carbon atoms in the acyl group) to most cleaning agents, e.g. B. those based on alkylarylsulfonates has no pronounced effect. It has now been found that cleaning agents with a content of Alkyl sulfates and only with such lauroylethylene glycol ethers an even greater effect on their foaming power possesses than the lower acylphenyl ethers with 6 to 10 carbon atoms in the acyl group.

The alkyl sulfates which can be used for the agents according to the invention are those in which the alkyl radical is a contains saturated or unsaturated straight or branched chain with 6 to 24 carbon atoms, with those with 12 to 18 carbon atoms are preferred. Such compounds can be used individually or in admixture with one another to be used. Preferred mixtures are those in which no less than about 75 percent of the alkyl radical Have 12 to 18 carbon atoms and the remainder contains 6 to 10 carbon atoms. Such mixtures can expediently from the mixed oils which can be made from animal or vegetable oils by well-known processes Fatty alcohols are obtained. The associated cation can be alkali, such as sodium, potassium or ammonium, or be an organic amine. The term "alkalk" used in the description and claims includes ammonium.

Examples of alkyl sulfates usable in the middle of the compounds include sodium lauryl sulfate, sodium palmityl sulfate, Triethanolamine myristyl sulfate and sodium salts derived from sulfated mixed fatty alcohols from tallow, palm oil, cottonseed oil, lard, coconut oil, palm kernel oil, which also in whole or in part can be hydrogenated. The alkyl sulfates derived from tallow or lard are preferred.

In addition to the alkyl sulfate, the compositions of the invention can contain other organic ionic non-soap detergents contain, in particular also alkylarylsulfonates such as tert. octylbenzenesulfonic acid sodium and potassium, the kerylbenzenesulfonic acid obtained by condensing kerosene with benzene and thus sulfonating the product Sodium, the keryl side chain containing 9 to 18 carbon atoms, sodium and dodecyltohiolsulfonic acid Sodium alkylbenzenesulfonic acid, in which the side chains are detergents

Applicant:
Unilever NV, Rotterdam (Netherlands)

Representative: Dr.-Ing. A. van der Werth, patent attorney,
Hamburg-Harburg 1, Wilstorfer Str. 32

Claimed priority: V. St. v. America May 24, 1955

Robert Elsworth Dukeshire, Creskill, Bergen, NJ
(V. St. A.),
has been named as the inventor

are derived from polymerized propylene and have about 12 to 15 carbon atoms.

The organic ionic soap-free cleaning agent consisting entirely or partially of the alkyl sulfate can in the mixtures according to the invention in any amount which the mixture a satisfactory Cleaning power, be present. An amount ranging from 15 to 30 percent by weight of the composition is preferred.

The added lauroylphenylethylene glycol ether can have the lauroyl group in the ortho, meta or para position to the ether group, the para compound being preferred. Its formula is

CH ₃ (CH ₂ ) ₁₀ CO-

OCH ₂ CH ₂ OH

It can be made in some known ways, e.g. B. by reacting with lauroyl chloride Phenol nach.Fr i e del-Crafts and subsequent condensation of one mole of the lauroylphenol obtained with IMol Ethylene oxide.

909 559/415

The amount of lauroylphenylethylene glycol ether added depends on the type of cleaning agent, the additives, fillers and the water in which the agent is to be used. Very simple tests will show in each particular case which amount is best used. The minimum amount necessary to achieve an improvement is usually above about 1 percent by weight of the organic cleaning agent. While sometimes amounts) is to jeben a substantial improvement more 50 ° / ₀ or, it was also found that sometimes a u large quantity can be detrimental. For each combination there is a limited maximum range which gives the greatest improvement in foam resistance. This range is usually below 30% and preferably 2 to 20%.

The improvement in foam persistence during laundering at ordinary concentrations such as them n effected with agents according to the invention is possibly more noticeable in soft than in hard water. This was to be expected because most soap-free detergents produce a more persistent foam in hard iVasher than in soft give. Some commercially available cleaning agents create a foam in hard water, which has such an order of magnitude that it is not detectable Improvement by the addition of the foam improver can be achieved according to the invention if this Detergents in hard water. A notable improvement in soft water can be however, often can be obtained even with such products, provided that an appropriate amount of suds improver is incorporated. The invention makes it light only possible, the foam resistance of an agent to improve during washing, but also to create a detergent that creates a foam of provides the same resistance as that of an agent with a higher content of washing-active substances.

The addition of the foam improver to soap and an alkyl sulfate or an alkyl sulfate and an alkyl aryl sulfonate containing detergents reduces the amount of active ingredients that are necessary to use in the essential to eliminate the formation of deposits when the agent is used in hard water. This applies in particular to funds in lump form.

The agents according to the invention can also be a water-soluble condensed phosphate such as tetrasodium dder Containing tetrapotassium pyrophosphate or pentasodium or pentapotassium tripolyphosphate, the amount Such a water-soluble condensed phosphate can make up between about 5 and 50 percent by weight of the detergent. The means of the invention can also contain any other scaffolding agents, additives and inert substances, as are usually found in cleaning agents are present, including silicates such as sodium silicate, carbonates such as sodium carbonate, salts of carboxymethyl cellulose, Dyes, perfumes, optical bleaches and sodium sulfate.

The agents can be prepared by any conventional method, for example by mixing the Ingredients in aqueous solution or porridge form and then drying the resulting mixture in a spray or drum dryer at elevated temperatures. Instead, the detergent can be used without spray dried the suds improver and then added the suds improver by mechanical mixing will.

A cleaning agent according to the invention can also have any physical form in which Cleaning agents are commonly sold.

. The following examples illustrate the invention. example 1

A powder detergent was made from the following ingredients: “. ,

⁰ percent by weight of

Components throughout

Together-

Sodium salts of the form obtained from tallow

mixed sulfated alcohols 16

Lauroylphenylethylene glycol ether 2

Pentasodium tripolyphosphate 15

Tetrasodium pyrophosphate 30

Sodium silicate 6

Sodium carbonate 3

Sodium cellulose methyl ether carboxylic acid .. 0.5

Water and sodium sulfate 27.5

A total of 100

The above agent was tested in hard and soft water using the following procedure:

The agent was dissolved in the water at 41 ° C to give a 0.04% solution. Pieces of paper, which were all soaked with the same weight of sebum, were taken one after the other at intervals of 30 seconds added to the detergent and the number that could be added before the foam destroyed was noted. Usual agitation was maintained throughout the test.

The results follow in Table I:

Table I.

Detergents Number of pieces
soaked pap
to destruction
Hard water
(24 ° H *)
(Means off
five attempts) ; n of with sebum
ier, required
of the foam
Soft water
(4 ° H *)
(Means off
four attempts) Compilation
from example 1
Compilation of Bei
game 1 without lauroylphe-
nylethylene glycol ether .. 12 to 20 + **
4th 13 to 20 + **
5

*) 1 ° H is equivalent to one part of calcium carbonate per 100 parts of water

**) 20+ indicates that all of the foam was not destroyed after adding 20 pieces of paper soaked with tallow to the test solution were added.

Example 2

A powder detergent was made from the following ingredients: Weight

percent of

Components throughout

Together-

Sodium salts of the ^{gelatin obtained from tallow}

mixed sulfated alcohols 8

Sodium dodecyl (tetrapropylene) -

benzenesulfonate 8

Lauroylphenylethylene glycol ether 2

Pentasodium tripolyphosphate 15

Tetrasodium pyrophosphate 30

Sodium Siucate 6

Sodium carbonate 3

Sodium cellulose methyl ether carboxylic acid .. 0.5

Water and sodium sulfate 27.5

A total of 100

Claims (6)

This compilation was tested according to the procedure just given, with the results following in Table II. TabeHe II cleaning agent Compilation of Example 2 Compilation of Example 2 without lauroylphenylethylene glycol ether. Number of pieces of paper soaked with tallow, necessary to destroy the foam. Hard water (24 ° H) (mean from five tests) 17 Soft water (4 ° H) (Average from four experiments) 19 to 20 + 3 to 4 Example 3 A detergent powder contained: percent by weight of the constituents total sodium salts of the formation obtained from tallow mixed sulphated alcohols 1 sodium dodecyl (tetrapropylene) benzenesulphonate 15 lauroylphenylethylene glycol ether 2 builders, water, etc. as in example 1 and 2 82 patent claims: 1. Soap-free cleaning agent containing alkyl sulfate, characterized in that it is also Contains lauroylphenylethylene glycol ether. 2. Cleaning agent according to claim 1, characterized in that it is also an alkyl aryl sulfonate contains. 3. Cleaning agent according to claim 1 or 2, characterized in that it contains 15 to 30% organic, contains soap-free detergent substances. 4. Cleaning agent according to one of the preceding claims that it preferably to _20/0, contains 1 to 50%, 2 ° from the weight of organic detergent-active material at Lauroylphenyläthylenglykoläther. 5. Cleaning agent according to one of the preceding claims, characterized in that the alkyl sulfate Contains 6 to 24, preferably 12 to 18 carbon atoms. 6. Cleaning agent according to one of the preceding claims, characterized in that it is also 5 to Contains 50% of a water-soluble condensed phosphate. Considered publications:
French patent specification No. 1,066,850. © 909 559/415 6.59