DE1617081A1 - Liquid cleaning mixture for drains and a double-acting method for cleaning drains - Google Patents

Description

Liquid cleaning mixture for drains and double effective method of cleaning drains

The present invention relates to a method for cleaning drain pipes and odor traps. In particular, it relates to a method and a mixture which are safer than conventional ones solid detergent for drains «

The development was directed towards a method for cleaning drains using a chlorinated hydrocarbon as a solvent, a wetting agent, an odorous

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masking agent and a dye. It uiurde
Surprisingly found that the mixture for cleaning drains forms a hydrocarbon f-in-water emulsion which cleans the side walls of the pouring pipe and then separates in such a way that the hydrocarbon settles in the odor trap and cleans it «

The use of chlorinated hydrogen for cleaning

of solid ffletal surfaces is well known in the art and is described, for example, in U.S. Patent 3,060,125 In such procedures, however, the use of a stabilized solvent and careful use are required Exclusion of water required * On the other hand if the deliberate use of water in combination with a hydrocarbon is not unknown, then this is the case the emphasis either on small amounts of water in two phase mixtures (no emulsion), for example in US Pat. No. 3,085,918, or on small amounts of water in Ulasser-in-Oil emulsions, for example in the US patent 2 941 952. In these known systems it is provided that they remain stable and not move cut open.

It is an object of the present invention to provide a safe and effective, based on the use of a liquid Procedure for cleaning drains to create "

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It is a further object of the present invention to provide a cleaning mixture suitable for this cleaning method to accomplish.

These and other ZMe are achieved in that the contaminated odor trap and the partial walls of the drain pipe are treated with a cleaning mixture, which consists of a chlorinated organic solvent (usually a chlorinated hydrocarbon), a wetting agent, a deodorant and a dye. The mixture forms one upon contact with the water in the drain Chlorohydrocarbon-in-Ulasser Emulsion «, Through this Emulsification makes the mixture in the odor trap bactericidal in the entire aqueous phase 10 minutes the emulsion separates and the chlorinated hydrocarbon settles in the odor trap and purifies it by replacing the water and dissolving the impurities that have accumulated there.

The chlorinated organic solvents used in the Methods that can be used include: carbon tetrachloride, 1,2-dichloroethane, 1,1,1-trichloroethane, trichlorethylene, Tetrachlorethylene, ortho-di-chlorobenzene, 1,2-dichloropropane, 1,1,2-trichloroethane, 1,1,2,2-tetrachloroethane, Pentachloroethane and Hexachloroethane "

The wetting agents used are of four general types

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at. Through it will be at an approximately equal percentage. Proportion (% by weight) _t for example when using 1,1,1— trichloroethane causes emulsification.

Ethoxylated alkyl phenols (such as the IG ^ EPAL CO series; Antara Chemical) effect the desired emulsification of 1,1,1-trichloroethane in the range of 1.0-5 wt -%, the ethoxylated alkylphenols have from 60 to 90% ethylene oxide. included to be effective.

The mixed aliphatic and aromatic phosphoric acid esters (e.g. Alkapenfc; U / Ayland Chemical Co.) emulsify 1,1,1-trichloroethane effectively within a range of 0.05-5 %. “ The phosphoric acid esters are by far for most of the chlorinated solvents used here the most effective emulsifiers.

The ethoxylated fatty acids and fatty acid esters (eg Tween, Atlas Chemical Co.) emulsify 1,1,1-trichloroethane at a content of 1 - 5 %, again the ethylene oxide content must be 60 - 90 % . In this series, the clonostearates are more effective than the ITIonolaureates.

The ethoxylated fatty alcohols (Siponics; Alcolac Chemical Co.-Brij's; Atlas Chemical Co.) emulsify 1,1,1-trichloro

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Ethane in the range of 1 - 5 %. Even with this substance of ethylene oxide-Gehält enmußte in the range of 6 0 - 90% are · ■

There are differences in the emulsifiability of this series of wetting agents, depending on the alcohol used to produce the special wetting agent (Lauryl-> Stearyl _7, Cetyl-, Qleyl-).

It is obvious that the wetting agent may be either too hydrophobic or too hydrophilic to emulsify the 1,1,1-trichloroethane in a suitable manner after it has been added to water and to allow it to settle after about 10 minutes an ethylene oxide content of 60 - 90 % is quite critical. In addition to the ethylene oxide content and the sounds used, the hydrophobic content of the wetting agent can also influence the effectiveness of each type of wetting agent. In the context of this work, the examined wetting agents could generally be characterized according to the HLB (Hydrophile-Lipophile Balance; in the brochure with the title "The Atlas HLB-System") published by Atlas Chemical Ind. Inc., Chemical Division, Wilmington, Delaware · The effective HLB range appears to fall between 12 and 16 as determined by the Atlas system.

furthermore, for the di »emulsification of 1,1,1-trichloromethane 1098Q9 / 1870 ■ - ⁶ -

1617U81

- b -

Mixtures of wetting agents should be considered, as mixtures are generally better suited for emulsification than

can

Individual wetting agents "With a view to this ^ exchanges take place within or among each other of the four above-mentioned series.

Commercially available odor masking agents and dyes are also used. Neutroleua Beta or Gamma covers the odor of 1,1,1-trichloroethane in a range of approx. 0.01-2.0% by weight. Both esodorants are stable in 1,1,1-trichloroethane.

Nitroechtorange SG is in a range from 0.00001 to 1.0 Gein .- ^ suitable for coloring the cleaning mixture and stable in the mixture, /

In a preferred embodiment of this invention, the cleaning mixture consists of approx. 95.0 to 99.7 Ge «.- % 1,1,1-trichloroethane, from approx. 0.001 to 5.0 Ge * .- % of an ethoxylated branched alkyl phosphate ( Alkapent 6 TD), from approx. 0.01 to 2.0 Get ».- # Neutroleua Gaima and from approx« 0.00001 to 1.0 Geui, - ^ Nitroechtorange SG. The alkyl group in the Alkapent 6 TD wetting agent is a C ₁₃ H ₂₇ alcohol.

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■ 1 * 1, .1 — Trichloroethane is preferred because it is a very good solvent for animal fats, hydrogenated vegetable oils, cooking oils and fats - the usual substances that clog the casts in households. It was also chosen because it is relatively non-toxic, non-corrosive, non-flammable and its vapors are harmless. The ethoxylated branched alkyl phosphate ester is preferred because of its superior stability in 1,1,1-trichloroethane and its emulsifying effectiveness. It also seems to stabilize 1,1,1-trichloroethane and prevent the hydrolysis to hydrochloric acid and other corrosive substances caused by water.

Neutroleum gamma and beta are deodorants which have been found to be stable in the cleaning mixture. Similarly, Nitroechtorange SG is a stable dye in the cleaning mixture.

The invention is to be explained using the following examples:

In each test, a measured Klenge of the cleaning mixture was added to the two-fold Abgußwassermenge £ a. 150 ppm hardness in the form of potassium carbonate) at approx «24 ° C (75 ° F). The extent of emulsification and settling

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(the separation of the emulsion) was noted. at the preferred embodiments of the present invention There was both good emulsification and settling (i.e. within 10 to 15 minutes). In all of the mixtures given below, the chlorinated hydrocarbon used was 1,1,1-trichloroethane.

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example 1

Ethoxylated Alkylphenoletzraittel (IGEPAL CO series «ANTARA CHEIfIICAL)

Wetting agents

Average

Approximately

Emulsion settling content

Ethylene oxide content HLB rating

(%) Wetting agent (i 1) wetting agent ($) solvent ^)

Igepal CO 530 50 109809 / CO 530
CO 630
CO 630 50
63
63 ^r 1870 CO 710
CO 710 70
70 CO 730 , 850,
880 70
80 CO 970 , 990 90

10.0
.10.0
12.0
12.0
14.0
14.0
14-15

16-18

97.5

95.0

97.5 95.0 97.5 95.0 99-98

98-95

no
no to \ KcXl Ic
small amount to I.
fast small amount to
Well fast quite
Well
Well to fast very
small amount fast

O OO

Example 2

Mixed aromatic and aliphatic phosphoric acid esters

(ALKAPENTS, IUAYLAND CHEMICAL CO.)

Wetting agents

Average Approximate content of

Ethylene oxide HLB-lüert des

content (%) wetting agent (ii) wetting agent (%) solvent ^)

gsmittel (^ Emulsifying
!) ^rUne Drop 99.95 Well too fast 95.0 Well ^ imS ^ momm 99.90-
99.85 Well Well 99.95 Well too fast 95.0 Well no 99.90-
99.85 Well Well

Alkapent 6TD

UD
CD
O
CO

Antara LE 600
LE 700

59 59 59

60 70 70

12.0 0.05 12.0 5.0 12.0 0.10
0.15 12.0 0.05 14.0 5.0 14.0 0.10
0.5

OO

Wetting agents Example 3

Ethoxylated fatty acids and fatty acid esters (TlUEEN, ATLAS CHEMICAL CO.)

Average Ethylene oxide content (%)

Approximate content of

HLB-Ulert des Wetting agent (-1) wetting agent

Emulsification

Solvent ^)

Drop

Fatty acids:

CO O CO

Ttoeen 20 84 16.7 20th 84 16.7 Tuieen 60 75 ■ 14.9 60 75 14.9 fflyrj 45 50-55 11 Fatty acid ester:

Atlas G-1471 G-1471 G-1790 G-1790

80 80 60 60

2.5 5.0 2.5 5.0 2.5

2.5 5.0 2.5 5.0

97.5 Well Well 95.0 Well Well 97.5 Well Well 95.0 Well Well 97 R I / η ΐ Π Q 97.5 ΚαΧΙΐΒ
Well Well 95.0 Well Well 97.5 Well Well 95.0 · Well Well

example

Ethoxylated fatty alcohols (■ BRIG »3 ATLAS CHEMICAL CO.)

Wetting agents

Diirchscbnittl ·; Approximately

Ethylanoxide · «HLB-nUJert des

content (#) wetting agent (ti) wetting agent (%) solvent {%)

Emulsification

Drop

OO O CO

Brij 52 25th 5.3 1.5 52 25th 5.3 5.0 Brij 76 60 12.4 5.0

98.5 99.0 95.0

no no good

Well

CM

m ο

It should be noted that in the above examples the HLB system has a deviation of ^ 1 HLB units and that the ethylene oxide content is an average value calculated from the average molecular weights. Accordingly, the possibility cannot be ruled out that some types of wetting agents or special humectants in the chlorinated hydrocarbons of the present invention will give satisfactory results even though they are outside the HLB limits of 12-16 and the ethylene oxide content limits of 60-90 %. lie. In view of this, the above examples are intended to limit the scope of the present invention.

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Claims (5)

Claims 1. Liquid cleaning mixture for drains, consisting of at least 95 % by weight of a chlorinated carbon solvent, approx. 0.001-5.0 Gem. -% of a wetting agent with an average ethylene oxide content of up to 90 Gbtu .- ^ and, if necessary, from approx. 0.01-2.0 % of a deodorant and from approx. 0.00001-1.0% of a dye. 2. Liquid cleaning mixture for drains according to claim 1, characterized in that the mixture contains approx. 95-99.8 Gem. -% Chlorocarbon hydrogen. 3o liquid cleaning mixture according to claim 1 or 2, characterized in that the solvent is 1,1,1-trichloroethane. 4., Liquid cleaning mixture according to one of the claims 1 to 3, characterized in that the wetting agent is an ethoxylated alkylphenol. 5. Dual action process for cleaning drains, characterized in that the contaminated odor trap and the pipe surfaces with a mixture of 10 9 80 9 / 18-70 161708] at least 95 Ge \ sj '-% of a Chlorkohleniuasserstof f-solvent of Ca, 0.001 to 5 Geui.-ji of a wetting agent having an average ethylene oxide content won 55-90 wt »-% treated u / ith ,. the mixture in the drain forms an emulsion on contact with water and cleans the drain and the emulsion then separates so that the cleaning mixture settles in the odor trap for cleaning 109809/1870