DE1049350B - Baths for the chemical cleaning of fiber goods - Google Patents

Description

GERMAN

It is already known to use surface-active compounds as so-called cleaning enhancers in chemical cleaning to be used. It is also known that the surface-active bodies especially then one Good cleaning effects, especially for water-soluble dirt, unfold when they have the ability to water to bind in the usual solvents even in the presence of hydrophilic fabrics.

It has now been found that in the chemical cleaning of fiber material with the use of surface-active bodies and water, particularly good cleaning effects are achieved if hydrogen peroxide is added to the solvents commonly used for chemical cleaning, the surface-active substances used must have the property of being solvent * 5 To be the intermediary for water and hydrogen peroxide in solvents in use. In the method according to the invention, water can be added to the cleaning liquor before or during the cleaning process. The textile material can be conditioned to 70 to 90 ° / ₀ relative humidity before or during the cleaning process.

The usual solvents for dry cleaning are low molecular weight chlorinated aliphatic hydrocarbons such as carbon tetrachloride, methylene chloride, ethylene chloride, funnel ethylene, perchlorethylene, Methyl chloroform, chloroform or aliphatic hydrocarbons such as gasoline in question.

The surface-active substances which are suitable for the process according to the invention can belong to the most varied of body classes. Above all, however, they must have the property of being a solubilizer in the solvent or solvent mixture used, not only for water, but also for hydrogen peroxide. Examples include: anion-active and nonionic surface-active substances such as mineral oil sulfonates, paraffin sulfonates, alkylarylsulfonates, oxyethylation products of fatty alcohols or alkylphenols, fatty acid glycerides, fatty acid sugar esters, fatty acid ethanolamides, alkyl sulfonamides, and also mixtures of the above-mentioned sulfates or phosphates of oxyethylated alkylphenols or fatty alcohols, among others mentioned substances are used. Cation-active compounds, such as. B. Cetylpyridiniumchlorid.Oleyltrimethylammoniumchlorid, or compounds proved as they are described in the German patent application F 16499 IV a / 23 e. Very good results are obtained if mixtures of higher molecular carboxamides, which can be substituted in the amido group by alkyl, oxalkyl or polyglycol ether groups, with salts of higher molecular amido ethers such as oxyethylated compounds or mixtures of salts of higher molar baths for chemical cleaning
of fiber material

Applicant:

Farbwerke Hoechst Aktiengesellschaft

formerly Master Lucius & Brüning,

Frankfurt / M., Brüningstr. 45

Dr. Walter Gutmann, Kronberg (Taunus),

and Dr. Lorenz Heiss, Frankfurt / M.-Zeilsheim,

have been named as inventors

kular amidoether used with oxyethylated compounds. Furthermore, are those in the patent application F 13577 IV a / 23 e (Auslegeschrift 1004 324) Connections listed. Mixtures of the solvents in question can also be used soluble, higher molecular weight amines or ammonium compounds, which can also be oxethylated, and acids of the condensation products of fatty acids and co-amino acids or the acidic sulfated reaction products of fatty acid amides with one or more ethylene oxide groups or acids of the reaction products of primary, secondary and tertiary fatty amines with halocarboxylic or sulfonic acids or acids of the reaction products of alkyl sulfonic acid amides with ω-halocarboxylic or sulfonic acids can be used, but at least one of the compounds must be oxethylated. Furthermore, surface-active Substances are used that are salts of anionic or cationic compounds, such as z. B. the salts cetylpyridinium hydroxide and dodecylbenzenesulfonic acid. Of course there is one here too Combination of several of the compounds mentioned possible.

The inventive co-used in the cleaning process hydrogen peroxide is conveniently used in the form of a 30 to 40 ° / ₀ solution. Of course, lower concentrated solutions can also be used, however, when adding water, an increased water content of the hydrogen peroxide must be taken into account. The concentration of the hydrogen peroxide in the cleaning liquor can fluctuate within wide limits. Usually it will be between 0.1 (based on 100 ° / ₀ pure product and product weight) to 3 ° / ₀ hydrogen peroxide use, pre-

809 747/429

preferably 0.3 to 1.5 ° / ₀ . However, it is advisable to keep the concentration of hydrogen peroxide as low as possible in the case of colored material. On the other hand, it can be advantageous to use higher concentrations in white or off-white textile material, which may well exceed the above-mentioned limit value, e.g. B. 5%. The hydrogen peroxide can be added to the product to be added to the cleaning solution. Of course, the hydrogen peroxide can also be added to the cleaning liquor separately from the surface-active body.

By using the hydrogen peroxide according to the method of the present invention Removal of stains has already been achieved with chemical cleaning, which was previously only possible by subsequent cleaning Detachur could be eliminated, such as B. Stains from drinks: coffee, beer or spirits, or from grass, urine, sweat, or yellowing. Also graying, especially of white fabrics and fibers, can be eliminated according to the method of the present invention.

example 1

10 kg of gray, air-dry textiles made of wool, rayon, linen, silk, acetate fibers and synthetic fibers Fibers such as polyacrylonitrile, polyterephthalic acid esters or polyamides are used in 1001 carbon tetrachloride cleaned. A mixture of the following composition is added to the cleaning liquor:

1000 g of dodecylbenzenesulfonate 400 g of the condensation product of 1 mol of tri-

butylphenol and 9 moles of ethylene oxide
200 g oleic acid ethanolamide
100 g hydrogen peroxide (30 ° / ₀ ig)

During the cleaning process, the water content of the liquor is adjusted so that the textile material one Assumes moisture content corresponding to conditioning at 70 to 80% relative humidity.

The measured by a Leukometer graying of 20 ° / ₀ decreased to 5%, during a cleaning process with the same mixture without hydrogen peroxide under the same conditions showed a graying of 22%. The graying is defined as follows:

W ₀ -W ₁₁ W _n

■ 100

W ₀ = whiteness of the fabric before graying.
W _v = whiteness of the grayed tissue.
Similar good effects can also be achieved with mixtures of the following composition:

a) 800 g of dodecylbenzenesulfonate
. 400 g of dioctyl succinic acid ester sulfonate

400 g of dibutyl cresol, oxäthyh'ert with 6 moles of ethylene oxide
100 g hydrogen peroxide (30 ° / ₀ ig)

b) 500 g mineral oil sulfonate (so-called mahogany sulfonate

fonat) and
100 g hydrogen peroxide (30 ° / ₀ ig)

c) 500 g chlorinated paraffin sulfonate (20 ° / ₀ chlorine content)
200 g alkyl sulfonamide (chain length C ₁₂ to C ₁₈ )
100 g of nonylphenol, oxethylated with 10 mol of ethylene oxide

50 grams of dibutyl naphthalene sulfonate
150 g hydrogen peroxide (30 ° / ₀ ig)

d) 600 g chlorinated paraffin sulfonate (20% chlorine content)
150 g alkyl sulfonamide (chain C ₁₂ to C ₁₈ )

100 g of dinonylphenol, oxethylated with 2 moles of ethylene oxide and sulfated
150 g hydrogen peroxide (30 ° / ₀ ig)

Example 2

kg air-dry textiles, which contain selected stains from sweat, urine, grass and beer, are cleaned in 100 l tetrachlorethylene, to which a mixture of the following products is added:
200 g of oleic imidazoline chlorohydrate
100 g of tributylphenol condensed with 8 moles of ethylene oxide

50 g oleic acid ethanolamide
150 g hydrogen peroxide (3O%)
During the cleaning process, the water content of the liquor is adjusted so that the textile material assumes a moisture content which corresponds to _{conditioning at 70 to 80 ° / 0 relative humidity.}

The stains are completely removed by this cleaning process.

One of the following mixtures can be used with equal success:

A. 300 g of the dodecylamine salt of oleylmethyltaurine 100 g of oleic acid glycerol ester

150 g hydrogen peroxide (30%)

B. 300 g ethanolamine salt of oleic acid
100 g oleic acid

100 g oleic acid ethanolamide

200 g hydrogen peroxide (30%)

Claims (1)

Claim: Use of baths made from solvents, such as those commonly used for dry cleaning, with a content of hydrogen peroxide and so much water that the textile material in the bath assumes a moisture content that _{corresponds to conditioning at 70 to 90 ° / 0} relative humidity, and Surface-active substances as solubilizers for water and hydrogen peroxide for chemical cleaning of fiber material. Considered publications:
French Patent No. 986 013;
U.S. Patent No. 2,056,141. © 809 747/42? 1.59