DE2350008B2 - LIQUID DETERGENT - Google Patents

Description

The invention relates to a liquid detergent, particularly for dishes, which is practical contains no builders and can be used in hard water, consisting essentially of one Protein derivative about 3 to about 45 weight percent, preferably about 6 to 25 weight percent of one water-soluble hydrocarbon silicate salt of the general formula:

RO (C ₂ H ₄ O) _n SO ₅ M

(D

where R is a saturated or unsaturated, aliphatic hydrocarbon radical, η is a number from 1.5 to 12 and M is an alkali metal or ammonium ion or a dimethyl, diethyl, triethyl, triethyl, dimethanol, diethanol, trimethanol - Or triethanolammonium radical means. Water and optionally customary synthetic, organic, anionic, surface-active surfactants of the sulfonate and sulfate type, the total amount of anionic organic, surface-active surfactants being at most 474 percent by weight, preferably 12 to 36 percent by weight, and the weight ratio of hydrocarbon sulfate salt to customary surfactants, if they are available this is above 1:10, preferably above 1: 3 is characterized in that it is 0.1 to 5 percent by weight of a water-soluble gelatin with a Molecular weight of at least 12,500 up to 100,000, preferably from about 15,000 to about 50,000, one isoelectric point from pH 4.5 to pH 9.2 and one Contains gel strength from 25 to 300 bloom grams

The cleaning agent according to the invention, which contains practically no builders, is for dishwashing,

_r0 z. B. of glass or porcelain, and for cleaning hard surfaces, such as tiles and other glazed objects, suitable and has an excellent cleaning effect and improved drainage behavior. It saves drying or Rub the cleaned items with a cloth or fabric and at the same time prevents the deposition of hardening components of the water on the cleaned, rinsed and air-dried items almost completely.

In the past few years there have been liquid detergents, especially those that are soap-free Detergents are based on a large paragraph for washing glasses, plates, porcelain and the like. They are also often used to clean windows as well other objects made of glass or objects with glazed surfaces, as well as for washing Used by cars They are particularly suitable for cleaning these items by hand thanks to their easy and quick dispersion in the washing liquid and they have the ease of use special advantages over the granular, powdery, paste-like or tablet-like products. Such detergents usually contain in addition to organic surface-active detergents inorganic and / or organic builders to the To improve the cleaning effect of the organic detergents and / or to reduce the negative effects of water hardness. In the detergents of the present invention is the addition of Gerfist substances avoided without negatively affecting the cleaning effect to influence. Although no builders to bind the hardening constituents of the water can be found on the washed, rinsed and air-dried items Hardly any stains can be found that are due to the hardness of the water.

The quality of a dishwashing detergent is usually determined by the consumer when it comes to hand washing based on the amount of foam during the washing Process and based on the gloss of the cleaned and / or dried items rated The liquid detergents for washing dishes Hand currently available on the market, are largely constructed in such a way that a large Amount of foam is created because the consumer is using it A great cleaning effect connects A lot of food residues, however, reduce the formation of foam and the cleaning effect in detergents. The detergent residue on the cleaned area stands must be rinsed or dried in the removed when damp. If the items did not dry off immediately after washing these residues dry on the surfaces of the cleaned objects and leave behind Spots and streaks. If hard or tap water is used, it will leave hard-to-remove white water Stains on the surfaces of the objects due to the hardness of the water. If the

Objects are rinsed in clear tap water and dried immediately, so they stay on the cleaned and dried items also leave stains back on the hardening ones Components of the water and.

Drying the cleaned items, e.g. glasses and dishes, with cloths immediately after them were taken out of the washing liquor is uneconomical (a lot of water has to be removed and many cloths are required) and also not always stirrable (too frequent interruption of the Winding process). That is why many housewives start only then to dry the washed items with a cloth after the last item has been washed and removed from the detergent solution and - in some cases - rinsed. Other housewives simply provide the washed items Side to drain and air dry. This increases the cleaning effect of the used cleaning agent that the housewife may have noticed immediately after the dishwashing process was lost and unsightly surface spots and streaks that are difficult to remove or due to water hardness arise receding stains if the washed items have been rinsed. Because these spots, in particular The glasses and other glazed objects lose those caused by water hardness and can hardly be removed by further rinsing their shine and are only reluctantly needed

The rinse aid currently on the market available to prevent staining of glasses, tableware, etc. from surface-active detergents and / or to avoid water hardness are primarily intended for use in dishwashers They each have to be in a separate rinse cycle after the actual rinsing or cleaning cycle used as they are completely ineffective when used together with the cleaning agent (detergent mixture). You also need to separately because they react with the ingredients of dishwashing detergents or cleaning agents, thereby reducing the cleaning effect of the cleaning agent is reduced.

Contrary to the general assumption that rinsing and cleaning agents are used separately for dishes must be packaged and used, according to the invention is a stable aqueous, practically builder-free cleaning agent for dishes and the like Articles provided with an excellent cleaning effect, because of its improved No streaks or stains due to water hardness on the drainage behavior after rinsing Objects, regardless of the hardness of the cleaning water and the rinsing water. The invention is therefore based on the object of providing a liquid, stable, aqueous cleaning agent, in particular for use by hand provide excellent cleaning action and improved drainage behavior after rinsing, This causes stains to form regardless of the hardness of the cleaning and rinsing water the cleaned, rinsed and air-dried glasses, dishes and other glass-like and glazed objects are avoided and drying with towels is not necessary.

The attraction, the ease of manufacture and the economics of the dishwashing and cleaning agents of the present invention.

and this is another advantage of the present Invention, easily improved and adapted to the particular end use sought, e.g. B. by Addition of strong foaming surface avalanches

S means without affecting the final shine of the cleaned Glasses, plates, etc. is lost. The amount of conventional additives, such as colorants, opacifiers and fragrances, can be increased, since none Builders are present. In addition to this, there will be

to solid residue that appears after the cleaning process the cleaned items may remain and only partially due to the rinsing under clear Tap water could be removed, washed away with water through the drain The liquid detergent of the present

Invention that can be used in hard water contains detergents that contain gelatin or containing hydrolyzed proteins and surfactants are, for example, from GB-PS 11 60 485

ίο or the DT-OS 1617 062 known The DT-OS 16 17 062 describes lotions or detergent mixtures that, in addition to a surface-active detergent contain a partially degraded protein with a gel strength of 0 bloom grams. A gelatin with a

However, gel strength of 0 bloom grams is for that Purpose of the present invention completely unsuitable, since it does not produce the desired drainage effect

The cleaning agent according to the invention can in addition to the water-soluble hydrocarbon sulfate of the general

mean formula I as usual synthetic, organic, anionic, surface-active surfactants up to about 45 percent by weight of a water-soluble hydrocarbon sulfonate of the general formula:

R ₂ -SO ₃ M

(Π)

wherein R _{2 is} a straight-chain or branched, saturated or unsaturated, aliphatic hydrocarbon radical having 8 to 24 carbon atoms or by an aliphatic, straight-chain or

40. branched-chain hydrocarbon radical with 8 to 18 carbon atoms means substituted benzene radical and M has the meaning given for formula I, and up to 45 percent by weight of a water-soluble one Hydrogen sulfates of the general formula:

R ₃ OSO ₃ M (III)

in which R _{3 represents} a saturated or unsaturated aliphatic hydrocarbon radical having 8 to 20 carbon atoms and M has the above meaning.

A preferred liquid detergent is made

mainly from:

A. about 6 to about 25 percent by weight of a sulfate of the general formula (I), in which Ri is an alkyl radical

12 to 18 carbon atoms, preferably a higher fatty alcohol derived from coconut oil, π is a number from 3 to 6 and M is an ammonium or alkali metal;

B. about 0.2 to about 2 weight percent of a water-soluble gelatin having a molecular weight

from 15,000 to about 60,000, preferably from 25,000 to 50,000; an isoelectric point above pH 6, preferably at pH 7 to pH 9 and a gel strength of more than 50 bloom grams, preferably of up to 200 bloom grams;

C + D about 10 to about 30 percent by weight of a mixture of 1 part of a sulfonate of the general formula (II), wherein R _{2 is} an aliphatic, straight-chain

Hydrocarbon residue with 12 to 16 carbon atoms,

Alkl

preferably denotes an olefin residue or an ßM benzene residue and M denotes an ammonium or alkali metal ion, and 2 parts of a sulfate of the general formula 08% in which R3 denotes a Cij-ie-alkyl group and M denotes an ammonium or alkali metal ion; and

E. remainder: water; being the total amount detergent surfactants is 18 to 36 weight percent

The anionic surfactant detergents used in the liquid detergent of the present invention include gelatin and the others Components that can be added in smaller amounts are described below. When in the following description of detergent surfactants and other ingredients refers to a salt of an anionic detergent surfactant or other acidic ingredient is taken, it means a sodium, potassium, ammonium, trimethyl, triethyl, dimethyl, diethyl, Trimethanol, triethanol, dimethanol and diethanolammonium salts, unless otherwise stated

Suitable detergent surfactants are those in the liquid cleaning agent of the present invention Invention can be used are: 1. Water-soluble hydrocarbon sulfates represented by the general formula

R ₁ O (C ₂ H ₄ O) _n SO ₃ M

(D

where Ri is a straight-chain or branched, saturated or unsaturated, aliphatic hydrocarbon radical having 8 to 24, preferably 12 to 16 carbon atoms or a benzene radical substituted by an aliphatic, straight-chain or branched-chain hydrocarbon radical having 8 to 18 carbon atoms, preferably 12 to 16 carbon atoms ; η is a number from 1.5 to 12 and M is a cation Coconut alcohol or a C ₈ -ie-alkylphenol with 1.5 to 12, preferably 3 to 6 mol of ethylene oxide per mole of fatty alcohol in a manner known per se with SO ₃ or H ₂ SO ₄ and optionally subsequent bleaching and / or subsequent hydrolysis is obtained. Specific examples are

Ci ₂ - μ-alkyl - O - (C ₂ H ₄ O) ₃ - SO ₃ N (C ₂ H ₄ OH) ₃ ; Coconut - O - (C ₂ H ₄ O) ₄ - SO ₃ Na; C ₁₄ AUCyI-O- (C ₂ H ₄ O) ₃ SO ₃ NH ₄ ; Ci ₂ -I ₆ - alkyl-0 (C ₂ H ₄ O) ₆ -SO ₃ K and

Tallow - O - (C ₂ H ₄ O) ₉ - SO ₃ N (HXC ₂ H ₄ OH) ₂ ; 2. water-soluble salts of an organic sulfuric acid reaction product of the general formula:

50

55

R ₂ -SO ₃ -M

(H)

wherein R _{2 is} a straight-chain or branched, saturated or unsaturated, aliphatic hydrocarbon radical having 8 to 24, preferably 12 to 16 carbon atoms or a benzene radical substituted by an aliphatic, straight-chain or branched-chain hydrocarbon radical having 8 to 18 carbon atoms, preferably 12 to 16 carbon atoms, and M is a cation. Important examples of preferred synthetic detergents according to the present invention are the salts of an organic sulfuric acid reaction product of a hydrocarbon of the methane series, including the iso-, neo-meso- and n-paraffins, with 8 to 24 carbon atoms! preferably 12 to 16 carbon atoms or a hydrocarbon of the ethylene series with 8 to 20, preferably 12 to 16 carbon atoms and 1 to 4 double bonds, and a sulfonation agent, e.g. SO ₃ , H2SO4 and oleum, which is obtained by known sulfonation processes and optionally bleaching and hydrolysis. Sulfonated C, ₂ _, ₆ -a-Olenne, alone or together with sulfonated n-paraffin & NEN with an average of 14 carbon atoms are preferred Important examples of alkyl benzene sulfonates, m which the AlkyteraPP ^{"5 8 to l8} carbon atoms are dodecyl, tetradecyl and Hexadecyibenzolsulfonate and those described in U.S. Patents 22 20099 and 24 77 383;

3. water-soluble salts of an organic sulfuric acid reaction product of the general formula:

R ₃ OSO ₃ M

where R _{3 is} a saturated or unsaturated, aliphatic hydrocarbon radical with 8 to 20, preferably 12 to 16 carbon atoms and M is a cation. or unsaturated fatty alcohols, preferably coconut or tallow alcohol, can be obtained in a manner known _{per se with SO 3} or H ₂ SO ₄ and optionally subsequent bleaching and / or subsequent hydrolysis. Specific examples are C ₁₂ - μ-alkyl - O - SO ₃ N (C ₂ H ₄ OH) ₃ , coconut - O - SO3K and tallow - O - SO ₃ NH ₄ .

4. water-soluble gelatin with a molecular weight of 12,500 to 100,000, preferably about 15,000 to about 60,000, an isoelectric point of pH 45 up to pH 9.2 and a gel strength of 25 to 300 bloom grams.

Gelatin is a typical protein, and the gelatin molecules, like the molecules of other proteins, are very large and complex with an average molecular weight of 5000 up to 200000 and even more higher. Gelatin molecules in alkaline or acidic solution are amphoteric and have a specific isoelectric point which depends on the treatment conditions in the manufacture of gelatin, which is caused by acid treatment has an isoelectric point above pH 7, generally between pH 7 and 9, whereas gelatin obtained by an alkaline treatment has a has an isoelectric point of pH 4.5 to 5. The preferred gelatin for detergents of the The present invention is the acid-treated gelatin having an isoelectric point of pH 7.5 to 8.5, preferably about pH 8 and an average molecular weight of 1-5,000 to 60,000, especially from 25,000 to 50,000.

The water-soluble gelatin can be used in the liquid detergent of the present invention in one Amount of 0.1 to about 5 percent by weight, preferably 0.2 to about 2 percent by weight based on the Total weight of the detergent. While the very small amount of 0.1 percent by weight is necessary to achieve a noticeable To achieve the drainage effect, the upper limit of about 5 percent by weight is based on the formulation requirement

sen, i.e. on the fact that a liquid composition should be present which is still pourable and therefore easy to close handle, solve and apply.

In order to achieve the comprehensive cleaning effect, i.e. the removal of dirt by simply rinsing and the Removal of residues from dirt, detergent surfactants and hardening components of the water due to the drainage effect after additional rinsing, but without wiping or Drying with a cloth, to achieve the ι ο molecular weight of the invention liquid cleaning agent to be used gelatin above 12,500, preferably above 15,000 and in particular from 25,000 to 60,000, while the isoelectric point of gelatin is between pH 4.5 and pH 9.2, preferably above pH 6 and in particular at pH 7 to pH 9 and the gel strength of the gelatin to be used above 25 bloom grams, preferably above 50 bloom grams and in particular should be around 80 to 200 bloom grams. (Below the gel strength in Bloom grams or the Bloom strength one understands the force in g that must be applied to a cylinder with a diameter of 12.7 mm, so that it penetrates 4 mm deep into the surface of a gel made from 6.67% gelatin with 15% moisture, cf. British Standard Method for Sampling and Testing Gelatins.)

Suitable further ingredients or additional compounds to be found in the detergents of the present invention to make it more attractive to consumers are:

5. Low molecular weight organic acids such as acetic acid, citric acid, maleic acid and inorganic acids like boric acid and the corresponding alkali metal salts, but only in very small quantities. Potassium tetraborate is preferred Although boric acid or salts in amounts up to 5 percent by weight, calculated on the Total weight of the cleaning agent can be added, but additives of 2 to 3% preferred;

6. Fragrances, dyes, fluorescent substances. Fabrics that prevent blindness, such as B. Benzotriazo! or Ethylene thiourea, and bactericides;

7. hydrotropes and other solubilizers, wi <z. B. Na cumene sulfonate, Na or K toluene sulfonate, Na or K-xylene sulfonate, ethanol, butanol or isopropa nol.

As already stated, the cleaning center of the present invention can be used in hard water. If the water hardness is in millimoles CaCO per liter is expressed, both for the cleaning solution and for the rinsing solution Wassei with a water hardness between 0.7 mmol and 3.7 mmol CaCO3 per liter and higher will.

The excellent cleaning effect and especially re the superior drainage effect of the liquid dishwashing detergents of the present invention will be ir the following experiment

Seven series A, B, C, D, E, F and G, each consisting of two dishwashing detergent solutions, which are defined below, and seven series A ', B', C, D ', E', F 'and G', each consisting of two rinsing solutions were prepared. Each dishwashing detergent solution in a series contained 0.2 percent by weight of one per liter; Dishwashing detergent marked below. The rinsing solutions consisted of clear tap water. The water in the rinsing and rinsing solution had a water hardness of about 3.4 mmol CaCO3 per liter. Each rinsing or rinsing bath contained around K liters of water. The temperature of old bathrooms Odei rinse solutions was about 42 ⁰ C at the beginning and dropped to 35 bii 27 ° C at the end of the flushing process from. The temperature of the rinsing baths varied between 40 and 42 ° C

In each of the two dishwashing detergent solutions of the series, 5 soiled glasses (content approx. 25 el), which had been obtained from a cafeteria, 3 (rinsed for seconds, removed and placed on a rack for a true 30 seconds, then 5 individually in the corresponding Submerged rinsing liquid and placed in a vertical position with the bottom nad up on a rack to drain and air dry (room temperature approx. 23 ° C).

The liquid dishwashing detergent that is in each egg Series used had the following compositions:

Components in% by weight

Series
A.

Coconut Alcohol Ethylene Oxide (3) - 20
sulfate ammonium salt
Cw-i «-alcohol ethylene oxide {6) - -

soBat ammonium salt
Tallow alcohol ethylene oxide (9) - -

10

»Araffinsilfonate ammonium salt
(due to the small molecular weight of the paraffin: 190)
Olefin sulfonate ammonium salt
^^ ptsächfich ans <
C'i-ADtylbenzoisnBbnat-

O ^
rest

14th

12th

12th

rest

10 5 5

10

OJ
rest

21

03
rest

0J9
rest

rest

·? Oetaiae; by ^ iminSches Moiskufergewicht 3OOG0; isoel itekinscAer Penla about pH 8 pounds;

Can hold about 90 bloom granules «J953i / 46

ίο

If you observe the film of water that runs off the glasses after the last rinse, so this water film runs off the glasses in a few seconds, which in the solutions of series A to F had been rinsed, and these glasses were dry long before the glasses that were in the solutions of the series G had been flushed.

After all of the glasses were dry, the external appearance of the glasses was evaluated. The glasses that had been rinsed in Series A through F rinse fluids were the glasses that were in the G-series flush fluids were flushed superior; they showed less or no streaks and hardly any stains due to water hardness, whereas the glasses of the G series have different stripes and had various stains due to water hardness.

The invention is explained in more detail by the following examples. All percentages relate to the weight.

example 1

20.0% C12- H-alcohol-ethylene oxide- (3) -sulphate-sodium salt, 15.0% Cn-ie-paraffin-sulfonate-sodium salt, 0.5% Gelatin, average molecular weight 25,000, isoelectric point about pH 8.4, gel strength about 80 Bloom gram, the rest Wasseir.

Example 2

16.0% Ciz-u-alcohol-ethylene oxide-pJ-sulfate-sodium salt, 15.0% cis-ie-paraffin sulfonate-triethanolammoni- Umsalz, 1.0% gelatine, average molecular weight 45,000, isoelectric point about pH 8.2, Gel strength about 100 bloom grams, the rest water.

By replacing the. Ci ₂ -H-alcohol-äthylenoxid- (3) -sulphate-sodium salt by the same weight of coconut fatty alcohol ethylene oxide (6) -sulphate sodium salt, or by a mixture of 8% coconut fatty alcohol sulfate sodium salt and 8% Q ₂ - _M -alcohol-ethylene oxide- (3) -sulphate-sodium salt, cleaning agents are obtained which have approximately the same cleaning effect and approximately the same drainage behavior.

Example 3

10.0% C | ₂ -alcohol-ethylene oxide- (4) -sulfate-ammonium salt, 30.0% Cu-is-paraffinsulfonate-ammonium salt, 0.8% gelatin, average molecular weight 35,000, isoelectric point about pH 8, gel strength about 90 bloom-grams, Rest water.

Example 4

18.0% coconut alcohol ethylene oxide (3) sulfate ammonium salt, 10.0% Cia-H-alkylbenzenesulfonate sodium salt, 1.0% ammonium sulfate 1.5% gelatin, average molecular weight 25,000, isoelectric Point around pH 8, gel strength around 80 bloom grams of residual water.

Examples 5-10

5 6th 7th 8th 9 10 Coconut alcohol-ethylene ox; id- (3) -sulphate- 16% 18% 18% 12% ammonium salt Coconut alcohol-ethyleno>: id- (9) -sulfate- - 22% _ 14% sodium salt Cn-is-paraffin sulfonate sodium salt 10% 8th% 14% 10% 5% 8th% C υ-14 α-olefin sulfonate ammonium salt - 8th% _ 10% _ Cio-14 alkylbenzenesulfonate sodium salt - 5% 14% gelatin 0.5% ') 1.5% ') 3% :) O, 3o / o J) 0.8% 2) 0.5% ⁴ ) water rest rest rest rest rest rest

«} DurchsdHUttBebes molecular weight 25,000. Isoelectric point approx. PH 83. Gel strengthens 75 bloom grams. i) Average molecular weight 40,000. Isoetekin point approx. pH 8, gel strength 100 Bioom-Graimn. 1 i ^ SfSiiä! ⁶⁵ ! ^! ^! F ^! ^ »™ isoelectric point about pH 7.6. Gel strength 60 bloom grams. ") Average molecular weight 32,000. Isoelectronic point et * a pH SZ strength 85 bloom-grams.

_te

In order to show that known cleaning agents which contain a gelatin with a gel strength of Og Bloom, the drainage effect of the cleaning device according to the invention! not seven, 4 series Ri, R ₂ , R ₃ and R * of two wash liquors each were prepared. Each wash liquor in each series contained about 025 percent by weight of a cleaning product per liter as described below. The hardness of the water, which is used in the manufacture of the washcloths, is about 3.4raMrf CaOO ₃ per liter. Indeed, every wash liquor would be immersed for three minutes. While teas are immersed, the temperature of each wash is 42 ° C. The one in the first The water in each series is immersed for about a minute with gentle agitation in a running rinse bath (temperature: approx. 21 ° C; hardness: as for the washing length) and set aside for draining and drying on the water eingetaachteB Te "warden about iO seconds onter teafewie LenMBgswasser (Temperatar: about 15 te ^lT _'m ^C ^^, as in the wash liquor) and flushed"' ~~

etrtqwen and i roctaen on the Laft beisöte ges ^ - The following cleaning agents have been used for the individual series:

for series R ₁ ; Rniiid gcniäS example! f «DT-OS 1617062. <Ane Träbangsmittel aod <Λ *

Perfume, containing 23% by weight of surfactants and adding 1% by weight of a gelatin with an average molecular weight of about 10,000 (determined by membrane osmometry on materials deionized to remove salts), a gel strength of 0 g Bloom and an isoelectric point between pH 5.2 and 5.8;
for series R2: cleaning agent which contained 23 percent by weight sodium lauryl sulfate (surface-active agent according to example 10 of DT-OS 16 17 062), water and 1 percent by weight of the gelatin used in series Ri;

for series R3: cleaning agent containing 23 percent by weight of KOkOSnUBaIkYl-O- (C ₂ H ₄ O) ₃ SO ₃ Na, water and 1 percent by weight of the gelatine used in series Ri;
for series R ₄ : detergent that is 23 percent by weight

of coconut alkyl-O- (C ₂ H ₄ O) ₃ SO ₃ Na, water and 1 percent by weight of a gelatin with an average molecular weight of about 25,000, a gel strength of about 80 g Bloom and an isoelectric point at about pH 8.4 .

As a result of the experiments, it was observed that none of the plates which _{had been washed in the washing liquors of the Ri and R 2} series showed a noticeable run-off effect within 6C seconds after washing. Two of the six plates that had been washed in the detergent series R3 showed a slight, irregular and slow drainage effect within 60 seconds after the dishwasher. All plates that have been washed in the R

, ₅ had been washed showed a fast and regular drainage effect within 6 (seconds after rinsing.

Claims (2)

f "· Claims: "L Liquid detergent, especially for Tableware that practically contains no builders and can be used in hard water % yield from a protein derivative is about 3 to about 45 percent by weight, preferably about 6 to 25 percent by weight of a washing-soluble hydrocarbon sulfate salt of the general formula: RO (C ₂ H ₄ O) ₀ SCI ₃ M (I) wherein R is a saturated or unsaturated, aliphatic hydrocarbon residue, α is a Number from 1.5 to 12 and M ei «alkali metal or Means ammonium ion or an Ilimethyl-, Diethyl-, Trimet & yl-, Träthyl-, thin ethanol, diethanol, trimethanol or triethanolammonhimrest, Water and optionally customary synthetic, organic, anionic, surface-active surfactants of the sulfonate and sulfate type, the Total amount of anionic, organic, surface-active surfactants at most 47.5 percent by weight, preferably between 2 and 36 percent by weight is and the weight ratio of hydrocarbon sulfate salt to conventional surfactants, if they present, above 1:10, preferably above 1: 3, is characterized in that it 0.1 to 5 percent by weight ehusr water-soluble Gelatine with a molecular weight of 12,500 up to 100,000, an isoelectric «! Point of pH 4.5 up to pH 9.2 and a gel strength of 25 to 300 Blcom-Oramm 2. Cleaning agent according to claim 1, characterized in that it contains 0.2 to : 1 percent by weight of a water-soluble gelatin with a molecular weight of 15,000 to about 60,000, preferably from 25,000 to 50,000, an isoelectric point above pH 6, preferably of pH 7 to pH 9 and a gel strength above 50 bloom grams, preferably from 80 to 200 bloom grams