DE2525996A1 - COLD CLEANER - Google Patents

Description

Henkel & Cie GmbH

4 Düsseldorf, June 9, 3 975
Henkelstrasse 67

Patent application D 5085

"Cold cleaner"

The invention relates to cold cleaners containing solvents and surfactants for removing oily and greasy soiling of solid surfaces such as metals, cement, ceramics, glass, plastics or similar surfaces.

Such cold cleaners are used to clean machines and machine parts, vehicles and vehicle engines, Chassis, transport containers, oily floors and other objects at room temperature or slightly higher Temperature. The cold cleaners used for this purpose mainly consist of solvents that are used with the addition of emulsifiers the advantage of improved dirt penetration, dirt removal and rinsable with water. Such agents are used so that the workpieces in the cold cleaner inserted or sprayed with the cold cleaners and after a certain exposure time - depending on the type and strength of the Soiling - the workpieces are freed from the dissolved dirt by spraying them off with water.

The cold cleaners generally contain aromatic, aliphatic, alicyclic hydrocarbons as solvents and / or halogenated hydrocarbons. Commercially available anionic or nonionic surfactants are used as emulsifiers.

609852/0991

Henkel & Cie GmbH

Sheet 2 _2Ur PatentanmeWuna O ^ 0 & 5 Patent Department

When using highly active emulsifiers for good dirt removal and rinsability of the dirt from the surface with water but have the disadvantages of being more intense Emulsification or mixing of the aqueous and solvent-containing phases using the usual oil and gasoline separators not sufficient for the complete separation of the solvents and oily or greasy soiling. In these In cases, an emulsion splitting system and / or flocculation must be used to split the water-solvent-dirt dispersion be performed. There is therefore an interest in cold cleaners that contain solvents and surfactants and Have a good cleaning effect and can be rinsed off, but no stable water-solvent-dirt emulsions form so that solvent and contamination can be separated off in a commercially available oil separator. It is particularly important here that a completely clear, solvent-free aqueous phase is produced.

There are already proposals for solving this problem are known, with z. B. Products from solvents and non-ionic substances Alkali or amine salts of lower carboxylic acids are added to surfactants or mixtures of surfactants Mono- and dialkylphenol polyglycol ethers can be used. However, these products do not work in all cases achieved an optimal solution, as either the cleaning effect and rinsability or the achievement of a complete Separation of the solvents and the formation of a completely pure water phase are not fully satisfactory. Further Requirements are the easy biodegradability of the surfactants used and no fish toxicity of the aqueous ones Phase through dissolved emulsifiers or other additives. The known cold cleaners do not meet this requirement fulfilled in full.

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609852/0991

Henkel & Cie GmbH Sheet -? to the patent application D DUQ patent department

It has now been found that the disadvantages mentioned of the customary cold cleaners are avoided and the disadvantages associated with them Requirements with regard to good cleaning action and rinsability as well as quick and perfect separation the water-solvent-dirt emulsions, a clear, non-fish-toxic water phase and easily degradable Surfactants is met if the cold cleaner according to the invention is used. These cold cleaners based on Solvents and surfactants contain a) a mineral oil fraction, b) saturated or unsaturated ones that are liquid at room temperature aliphatic alcohols or isoalcohols or cyclic alcohols with 6-20 carbon atoms and / or at room temperature liquid fatty acids with 8-20 carbon atoms and c) one or more sulfosuccinic acid diesters with alcoholic ones Groups with 3-20 carbon atoms, the concentration of b) 3 - 20 wt- $ and of c) 0.2-12 wt- #, based on the overall composition.

The mineral oil fractions can be aromatic, aliphatic or naphthenic mineral oil fractions can be used. For reasons mineral oil fractions with flashpoints above 55 ° C are predominantly used for occupational safety, although this is true no significance in terms of cleaning action, rinsing ability and separation of solvent-based and water-based Phase conditional. A preferred embodiment is based on Use mainly paraffinic or naphthenic Mineral oil fractions.

3 to 20 % of one or more saturated or unsaturated aliphatic alcohols or isoalcohols, or cyclic alcohols with 6-20 carbon atoms, such as, for example, cyclohexanol, hexanol, octanol, decanol, isooctanol, isodecanol, isododecanol, isotetradecanol, isohexadecanol, are added to these mineral oil fractions , Isooctadecanol, isoeicosanol, undecenol, oleyl alcohol, ricinol alcohol, linoleyl alcohol, and linolenyl alcohol.

609852/0991

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Henkel & Cie GmbH

Sheet 4 to patent application D 5085 patent department

Instead of or together with the alcohols mentioned, fatty acids which are liquid at room temperature can be used with 8-20 carbon atoms such as caprylic acid and pelargonic acid, and especially palmitoleic acid, oleic acid, ricinoleic acid, Linoleic acid, linolenic acid, can be used.

The cold cleaners according to the invention contain sulfosuccinic acid diesters with alcoholic groups individually or as a mixture with 5-20 carbon atoms, such as diamyl, Dihexyl, dioctyl and ditridecyl sulf © succinic acid esters.

A preferred embodiment consists in the use of unsaturated alcohols and / or saturated or unsaturated alcohols Isoalcohols with 14-20 carbon atoms, such as oleyl alcohol, rizino alcohol, linoleyl alcohol, Linolenyl alcohol, isotetradecanol, isohexdecanol and isoeicosanol.

Mixtures of sulfosuccinic diesters are also preferred with an alcoholic group of 3-10 carbon atoms and sulfosuccinic diesters having an alcoholic group of 10-20 carbon atoms are used.

Accordingly, cold cleaners are preferably used, which are characterized in that they

a) predominantly paraffinic or naphthenic lyi mineral oil fractions

b) unsaturated alcohols and / or saturated or unsaturated Isoalcohols with 14-20 carbon atoms

c) a sulfosuccinic acid diester with alcoholic groups of 3-10 carbon atoms as well

d) a sulfosuccinic acid diester with alcoholic groups of 10-20 carbon atoms

included, the concentration of the component

b) 3 -% and the concentration of the components - 20 wt.

c) and d) together from 0.2 to 12 wt -% by..

609852/0991

Henkel & Cie GmbH

Sheet 5 to the patent application D 50Ö5 patent department

The mixtures also contain sulfosuccinic diesters prefers short-chain sulfosuccinic diesters and long-chain ones Sulphosuccinic diester, in a ratio of 1: 1 to 1: 3

The cold cleaners according to the invention are distinguished by a very good cleaning effect, which is evident both in the laboratory test soiled metal sheets, as could also be demonstrated in practical tests.

When the objects placed in the cold cleaners or sprayed with cold cleaners were hosed down, a rapid Removal of dirt achieved and hydrophilic surfaces obtained. The water / cold cleaner mixtures or Water / cold cleaner / dirt dispersions separated very quickly into solvents and a clear water phase. the Separation effect was tested on the one hand in an oil separator according to DIN 1999 and on the other hand on a laboratory scale in one Shaking cylinder after 5 min. The aqueous phase which forms after these times, which due to the composition of the Cold cleaner according to the invention contains only readily degradable surfactants, was tested for fish toxicity. In the 24-hour test No toxic effects could be found in Goldorf.

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609852/0991

Henkel & Cie GmbH

Sheet 6 for patent application D 5085 patent department

example

Emulsifier-containing solvent cleaners of the composition listed below were removed by dissolving the sulfosuccinic acid diesters, Alcohols or fatty acids are produced in appropriate mineral oil fractions. It was each the cleaning effect and rinsability with water of the parts sprayed with the cold cleaner, as well as the fast and Perfect separation of the cold cleaning water mixture checked. The cleaning effect and the rinsability of the cold cleaner with water were assessed according to grades 1 (very good) - 6 (poor).

The separation of the cold cleaner water mixture was once in accordance with DIN 1999 in an oil separator and on the other after Shaking a mixture of 450 ml of water and 5 times 50 ml cold cleaner was tested in a 500 ml shaking cylinder after a settling time of 3 minutes. It became that complete settling of the solvent phase and the clarity of the water phase are assessed.

a) 7.2 % sodium ditridecyl sulfosuccinate 4.8 % sodium diamyl sulfosuccinate 5 % oleyl alcohol

83 % mineral oil fraction (settlement I82 - 212 ° C;

Aromatic content 16.5 % \ d = 0.79; Kauributanol value)

Cleaning effect and rinsability: 1

Separation according to DIN 1999 ' like pure solution

medium, over 95 % separation

Separation in the shaking cylinder: complete separation

of the solvent and clear water phase

609852/0991

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Sheet 7 ² ^ patent application D

Henkel & Cie GmbH Patent department

b) 4.8 % sodium ditridecyl sulfosuccinate (70 % ) 3.2% sodium diamyl sulfosuccinate 10 % oleyl alcohol

82 % aromatic-free mineral oil fraction (boiling point l80 -

270 ° Cj d = 0.76; Kauributanol value 26)

Cleaning effect and rinsability Separation according to DIN 1999

Separation in the shaking cylinder Behavior like pure solvent; Separation over 95 %

complete separation of the solvent phase and clear water phase

c) 0.1% sodium tridecyl sulfosuccinate

0.2 % sodium diamyl sulfosuccinate

10 % octyldodecanol

98.5 % mineral oil fraction (like example a))

Cleaning effect and rinsability: Separation according to DIN 1999:

Separation in the shaking cylinder 1-2

Behavior like pure solvent; Separation over 95 %

complete separation of the solvent phase and clear water phase

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609852/0991

Sheet ° to the patent application I

5O85

Henkel & Cie GmbH

Patent department

d) 0.9 % sodium tridecyl sulfosuccinate (70 # ig)

0.2 # sodium diamyl sulfosuccinate

5 Ji oleyl alcohol

95.9 % mineral oil fraction (like recipe b))

Cleaning effect and rinsability:

Separation according to DIN 1999

Separation in the shaking cylinder Behavior like pure solvent; Separation over 95 %

complete separation of the solvent phase and clear water phase

e) 0.5 % sodium dioctyl sulfosuccinate

5 % oleyl alcohol
9-4.5 % mineral oil fraction (like example a))

Cleaning effect and rinsability: Separation according to DIN 1999:

Separation in the shaking cylinder Behavior like pure solvent; Separation over 95 %

complete separation of the solvent phase,
almost clear water phase

f) 0.5 % sodium ditridecyl sulfosuccinate 10 % oleyl alcohol

£>9> 5 % of an aromatic mineral oil fraction (Siedelage

182-200 C; Aromatic content 97 #; d = 0.88; Kauributanol value 88)

Cleaning effect and rinsability Trenia effect according to DIN 1999:

Separation effect in the shaking cylinder

Behavior like pure solvent; Separation over 95 %

complete separation of the solution and clear water phase

609852/0991 -9-

Henkel & Cie GmbH

Sheet 9 ^{2 for} patent application D 5 O 85 patent department

g) 0.5 % sodium dioctyl sulfosuccinate

5 # oleic acid
94.5 % mineral oil fraction (like example a))

Cleaning effect and rinsability: 5 - 4 Separation effect according to DIN 1999 J Separation 95 % Separation in the shaking cylinder: Separation of the solution

middle phase; almost clear water phase

h) 1% sodium diamyl sulfosuccinate
10 % Oley! Alcohol
89 % mineral oil fraction (like example a))

Cleaning effect and rinsability: 1 separating effect in the shaking cylinder: separation of the

Solvent phase but still slightly cloudy water phase

i) 2 % sodium ditridecyl sulfosuccinate (70 $ ig)

5 % oleyl alcohol
95 % mineral oil fraction (like example b))

Cleaning effect and rinsability: 5-4

Separation effect in the shaking cylinder: complete separation of the solvent phase and clear water phase

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609852/0991

Henkel & Cie GmbH

Sheet 10 to patent application C 5C'Ö5 patent department

j) The following cold cleaner was used for comparison produced the unsaturated alcohol in a slightly lower concentration than according to the invention contained.

0.6 % sodium ditridecyl sulfosuccinate 0.4 % sodium diamyl sulfosuccinate 2.0 % oleyl alcohol
97.0 % mineral oil fraction (like example a))

A sufficient cleaning and rinsing effect was achieved, but separation in the shaking cylinder resulted incomplete separation of the solvent phase and a cloudy water phase.

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609852/0991

Claims (1)

Henkel & Cie GmbH Sheet 1 l for patent application D 5 ^ 8.5 patent department Claims Cold cleaners containing solvents and surfactants, characterized in that they a) a mineral oil fraction b) saturated or unsaturated aliphatic alcohols or isoalcohols which are liquid at room temperature or cyclic alcohols with 6-20 carbon atoms and / or fatty acids which are liquid at room temperature 8-20 carbon atoms c) one or more sulfobernsteintöurediester, their alcoholic groups have 5-20 carbon atoms included, wherein the concentration of b) 3 - 20 wt -% and c) 0.2 - 12 is Gevi .-%.. 2. Cold cleaner according to claim 1, characterized in that it a) predominantly paraffinic or naphthenic Mineral oil fractions b) unsaturated alcohols and / or saturated or unsaturated saturated isoalcohols with 14-20 carbon atoms c) a sulfosuccinic acid diester with alcoholic Groups of 5-10 carbon atoms as well d) a sulfosuccinic acid diester with alcoholic groups of 10-20 carbon atoms included, the concentration of the component b) 5 -% and the concentration of the components - 20 wt. c) and d) together from 0.2 to 12 wt -% by.. 609852/0991 Henkel & Cie GmbH Sheet 2 for patent application D 5035 patent department to, 5) cold cleaner according to claim 1 and 2, characterized in that the weight ratio of the sulfosuccinic diester with alcohols with 3-10 carbon atoms to the sulfosuccinic diester with alcohols with 10-20 carbon atoms is 1: 1 to IO. 609852/0991