DE2020968A1 - Bactericidal soap contng optical brightener - Google Patents

Abstract

Brightly-coloured, fatty acid alkali metal soaps contain bactericidal agents of at least one reducing agent i.e. hydrazine, hydroxylamine or alkali metal salts of oxyacids of divalent to tetravalent S, and also, relative to amt. of soap, (a) 0.001-1% by wt. optical brightener: (where X is an alkali metal ion) and (b) 0.1-5% by wt. 2-OH-21,4,41-trichlorodiphenyl ether.

Description

Bactericide Soap is known to have active bactericidal ingredients, in particular halogenated derivatives of phenols, salicylic acid anilides, carbanilides and diphenylmethanes, the undesirable property of yellow to brownish discolouration in soap bars to evoke. Attempts have already been made to change the appearance of such soaps by adding them to improve complexing agents and reducing agents, but only with moderate.success. It is also known to use optical brighteners to improve the color of soaps to add. As a re-examination has shown, however, occurs with simultaneous presence of bactericidal active substances in the vast majority of cases an extensive one or complete fluorescence quenching, so that the brighteners remain ineffective.

It now became a soap containing bactericide and optical brighteners found which does not have the aforementioned disadvantages.

The invention relates to light-colored, fatty alkali metal soaps with a content of bactericidal active ingredients and at least one reducing agent from the class of hydrazine, hydroxylamine and the alkali metal salts of oxo acids of divalent to tetravalent sulfur, characterized by a content of a) 9.001 based on the amount of soap up to 1 wt. of an optical brightener of the formula in which X is an alkali metal ion and b) 0.1 to 5% by weight of 2-hydroxy-2 ', 4,4'-trichlorodiphenyl ether.

The reducing agent content of the soaps should preferably be 0.01 up to 5 wt., of optical brightener 0.05 to 0.5 wt.

and of 2-hydroxy-2 ', 4,4'-trichlorodiphenyl ether 0.5 to 2 wt.

be.

Suitable reducing agents are, in addition to hydrazine and hydroxylamine, the are expediently used as salts of sulfuric acid or hydrochloric acid, the sodium salts of the potassium salts of oxo acids of the divalent and tetravalent Sulfur, such as sodium sulfite or sodium pyrosulfite, sodium dithionite.

Sodium sulfoxylate and sodium thiosulfate and the corresponding potassium salts. Sulfites or pyrosulfites are preferably used.

The soaps are the sodium or potassium salts of 8 to 20, preferably Fatty acids containing 12 to 18 carbon atoms, natural or synthetic Origin as well as their mixtures with resin soaps in question. Examples are from Soaps made from coconut or tallow fatty acids. Soaps that are of the fatty acids in olive oil, palm kernel oil, tall oil, soybean oil, cottonseed oil, Derive peanut oil or sunflower oil, the fatty acids contained in these unsaturated portion can optionally be partially or fully hydrogenated. Suitable are also soaps of carboxylic acids, which are produced by paraffin oxidation or oxo synthesis are available. Mixtures of soaps from different origins can also be used.

In a preferred embodiment, the soaps also contain complexing agents effective connections. These include the alkali metal salts of nitrilotriacetic acid, Ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, 1-hydroxyethane-l, l 1-diphosphonic acid, aminotri (methylenephosphonic acid) thylenediamine tetra (methylenephosphonic acid), Methylenediphosphonic acid, ethylenediphosphonic acid and the higher homologues of the named aminopolycarboxylic acids and phosphonic acids. Your crowd can until to 2 {-t, preferably 0.05 to 0> 5% by weight, based on the amount of soap. By using the aforementioned complexing agents or mixtures thereof, the durability.

the soaps against unwanted changes in color or smell improved.

The soaps can contain other common ingredients. These include superfatting agents, skin protection agents and binders, in particular free. Fatty acids, fatty alcohols, lanolin: as well as fatty acid mono- and dialkylolamides, also protein hydrolysis strings, starch derivatives, cellulose glycolates and polyglycols. Farther dyes, fragrances and opacifiers may be present.

The soaps can be in pieces, bars, sticks, noodles or flakes or as a cream, for example as a shaving cream, and after each usual Process are manufactured and processed. It is expedient to proceed as follows: that one shavings soap with the optical brightener, the bactericide and the rest Additives are intimately mixed and with the help of filtering devices or extruders converted into the desired form.

The soaps according to the invention are characterized by a light color, good bactericidal effectiveness and high resistance to color or odor Deterioration during storage and use.

Examples In the following examples, an 80% sodium tallow soap was used and a mixture of 20% sodium coconut soap used. The in the form of Flake present soap with a water content of 20% was made with the additives mixed, shaped in an extruder and pressed into pieces. The added one optical brighteners were in the form of the sodium salt. The color values of the soap bars was with the aid of a photometer ("Elrepho" from Carl Zeiss) using standardized Color filter is determined and from this the color value components x and y in the CIE standard color table calculated.

The measurement was similar after five days of storage under a daylight Light source repeated.

The composition of the soap bars, the results of the measurement and the changes in color perceptible to the eye are given in the following table. The percentages mean percent by weight. In the column "complexing agents" means the abbreviation EDTA the sodium salt of ethylenediaminotetraacetic acid and I4DPA the Sodium salt of 1-hydroxy-1,1-diphosphonic acid.

In example 14 a mixture of the two complexing agents was used.

Comparative samples A and B did not contain any optical brightener, while in comparative sample C the reducing agent was absent. In the comparison samples D and E were the compounds marked with +) due to other common substances been replaced, namely in this case the optical brightener consisted of the Disodium salt of bis-g (4-anilino-6-morpholino) -striazinyij -4,4'-diaminostilbene-2,2'-disulfonic acid and the bactericide of 3,5,4'-tribromosalixylanilide. All of the comparative samples were both immediately after manufacture and after the five day exposure darker in color than the pieces assembled according to the invention.

Example of optical bactericide reducing agent complex formers F a r b w e r t a n t e i l e color change reverberation after production according to Stägiger Exposure according to Stätiger% x y x y lightening 1 0.02 1.0 0.2% Na sulfite 0.23% EDTA 0.321 0.340 0.330 0.338 light to yellowish 2 0.04 1.0 0.2% Na sulfite 0.27% EDTA 0.320 0.324 0.330 0.338 light to yellowish 3 0.03 1.0 0.2% Na-Pyrosul- 0.27% EDTA 0.321 0.322 0.332 0.342 light after yellowish fit 4 0.03 1.0 0.2% Na sulfite - 0.325 0.325 0.345 0.352 light to yellow 5 0.02 1.0 1% Na sulfite 0.54% EDTA 0.319 0.313 0.329 0.337 unchanged light 6 0.03 1.0 2% Na sulfite 0.27% EDTA 0.318 0.312 0.323 0.338 unchanged light 7 0.03 0.5 0.5% Na sulfite 0.27% EDTA 0.318 0.320 0.325 0.334 unchanged light 8 0.03 0.5 0.5% Na-Pyrosul- 0.27% EDTA 0.312 0.325 0.326 0.336 unchanged light fit 9 0.03 0.5 0.5% dithionite 0.27% EDTA 0.320 0.332 0.325 0.342 light to yellowish 10 0.03 0.5 0.5% thiosulphate 0.27% EDTA 0.330 0.333 0.340 0.348 light to yellow 11 0.03 0.5 0.5% hydrazine 0.27% EDTA 0.331 0.335 0.337 0.340 light yellowish sulphate 12 0.01 0.5 1% Na sulphite 0.54% EDTA 0.325 0.220 0.320 0.235 unchanged light 13 0.02 0.5 0.5% Na sulfite 0.3% HDPA 0.324 0.319 0.330 0.234 unchanged light 14 0.05 1.0 0.5% Na sulfite 0.27% HDTA 0.318 0.318 0.324 0.334 unchanged light 0.3% HDPA A - 0.5 - - 0.353 0.368 0.377 0.372 yellow to red-brown B - 0.5 0.9% Na sulfite - 0.344 0.360 0.345 0.360 unchanged yellow C 0.03 0.5 - 0.27% EDTA 0.327 0.338 0.374 0.357 light red-brown D 0.03+) 0.5 0.2% Na sulfite - 0.350 0.362 0.375 0.365 yellow to red-brown E 0.03 0.5+) 0.2% Na sulfite 0.27% EDTA 0.340 0.355 0.345 0.360 unchanged yellow

Claims (5)

P atent claims 1. Light-colored, solid acidic alkali metal soaps with a content of bactericidal active ingredients and at least one reducing agent from the class of hydrazine, hydroxylamine and the alkali metal salts of oxo acids of divalent to tetravalent sulfur, characterized by a content of a) 0.001 to, based on the amount of soap 1% by weight of an optical brightener of the formula in which X is an alkali metal ion and b) 0.1 to 5% by weight of 2-hydroxy-2 ', 4,4'-trichlorodiphenyl ether. 2. Means according to claim 1, characterized in that it is based on the amount of soap, 0.01 to 5% by weight of reducing agents, 0> 05 to 0.5% by weight of the optical brightener and 0.5 to 2 wt. 2-hydroxy-2 ', 4,4'-trichlorodiphenyl ether contain. 3. Means according to claim 1 and 2, characterized in that ie to 2% by weight of alkali metal salts of complexing aminopolycarboxylic acids and / or contain polyphosphonic acids, 4. Means according to claim 3, characterized in that that the complexing agent from the alkali metal salts of ethylenedlaminotetraacetic acid and / or the aminotri (methylenephosphonic acid) exist. 5. Composition according to claim 1 to 4, characterized in that the reducing agent consist of the sodium or potassium salts of sulphurous acid.