JPS58189381A - Composition for cleaning metallic surface - Google Patents

Abstract

PURPOSE:To obtain a composition for removing solidified scum from a metallic surface contacting with filaments, by adding alkyldiphenyl ether sulfonate represented by a specified formula, fatty acid alkanolamide and an alklaine compound. CONSTITUTION:The alkyldiphneyl ether sulfonate is represented by the formula (where R is 4-18C alkyl, and X is Na or K), it is obtd. by reacting alkyldiphenyl ether with chlorosulfonic acid, and octyldiphenyl ether sulfonate is included. The fatty acid alkanolamide is synthesized by condensing alkanolamine with fatty acid preferably in 1:2 molar ratio. An inorg. builder such as sodium tertiary phosphate and/or a caustic alckali such as sodium hydroxide is used as the alkaline compound. Said compounds are added to a cleaning agent by prescribed amounts basing on the amount of solid matter in the agent. Solidified scum formed on a metallic surface contacting with filaments during filature using synthetic fibers is easily removed using the resulting composition.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a composition K1111 for removing assimilated scum, which is foreign matter adhering to metal surfaces.

More specifically, the present invention relates to a cleaning composition for removing solidified scum generated on metal surfaces that come into contact with threads during spinning of synthetic fibers.

Conventionally, in the spinning process of synthetic fibers and filaments, the thread speed has been increased to improve physiological properties. rollers, guides, heaters,
The spinning process conditions are becoming more demanding, such as increased contact pressure with fibers (such as reed feathers) and higher heat treatment temperatures. Due to the conditions associated with such agglomeration, for example, the temperature of the heater becomes high due to an increase in the heat treatment temperature, solidified scum will occur even if a treatment agent with good heat resistance is used. Such solidified scum causes problems such as yarn breakage (1) quality deterioration, and production efficiency (2) quality deterioration, so it is necessary to reliably remove the solidified scum. This requires a lot of effort, time, and sometimes even money! A problem arises in that the A contact body is damaged and needs to be replaced.

For example, in the production of false-twisted crimped yarn, the frictional false-twisting method has been adopted in place of the conventional shindle method, and the false-twisting speed has been dramatically increased by 77 times. With the technological progress of the equipment that makes up the violet false twisting process, it has become possible to increase the processing speed to 1E, and recently it has increased to 400 to 600 m/min, and even 1000 m/min.
High-speed machining exceeding 160 m/min has become possible.
~190℃ range to 200-230℃ to 25℃
The temperature is raised to 0℃ and it becomes a tablet.

Solidified scum easily adheres to the surface of such a high-temperature heater, and once it adheres, it easily accumulates and accumulates one after another, damaging the fiber threads and causing fuzz and, in some cases, broken threads. let In order to prevent such troubles, it is necessary to remove the solidified scum. Furthermore, as the processing speed increases, even a small amount of solidified scum can cause breakage and fuzz, so the solidified scum must be removed thoroughly and thoroughly.

In order to eliminate such troublesome work, it would be ideal to not generate solidified scum, but as long as organic substances are being composted, there is no method that does not generate heated fi residue, which is thought to be the main cause of solidified scum. The reality is that fiber treatment agents are assembled from ingredients that minimize the amount of heating residue (tK).

Therefore, the removal of solidified scum is unavoidable, and the usual way to remove solidified scum is to apply an alkaline cleaning agent containing ammonia or caustic soda and scrub it off with a bamboo spatula. In some cases, you may have to scrub with a metal spatula. In such a case (-the material of the metal contact body such as a metal is soft)-'
If there are holes, grooves, or chews, care must be taken not to damage the metal contact body, which may result in insufficient cleaning, and conversely, the cleaning must be done reliably by 1/-, which may damage the metal contact body. Sometimes.

Furthermore, if the heater or the like is located at a high place, as in recent high-speed processing machines, cleaning becomes even more difficult and may lead to unsafe practices.

One of the reasons is that it is difficult to remove solidified scum using existing cleaning agents, usually caustic alkaline Xi solution, which not only takes a lot of time but also increases cost due to the town of bioefficiency due to pause 1 and ζ. There are many issues such as fi-wide issues.

An object of the present invention is to provide a cleaning composition for facilitating the removal of assimilated scum on the surface of a gold-contacting body in contact with threads as described above. As a result of investigating various cleaning agents that can easily remove solidified scum in order to achieve the above object, the inventors discovered that the aforementioned object could be achieved with a cleaning agent containing a specific compound, and thus arrived at the .r' invention.

That is, the present invention relates to a fulkyldiphenyl ether sulfonate represented by the following general formula [1], a fatty acid alkanoate,
(This is a composition for cleaning metal surfaces containing gamma amide and an alkaline compound.

general formula The present invention will be explained in detail.

As the yarn speed increases, the friction between the yarn and the metal contact body, especially the heater surface, increases, so the processing agent and polymer components are transferred to the heater surface through cutting or abrasion, resulting in even higher temperatures.・As a result of heat treatment with a heater, the treatment agent deteriorates due to heat and becomes carbonized and stool fat. At that time, components such as titanium oxide and water contained in the polymer, hard inorganic substances such as silica contained in IT Fiber Processing Soshin, and oligomers precipitated from the polymer are mixed with the heating residue of the oil and solidified scum. It is thought that (・)

Conventional caustic alkaline water baths lack the penetrating power and decomposition power for such solidified scum, and the solidified scum does not swell sufficiently, making it difficult to remove it. In this regard, in the present invention, by using the sulfonate salt shown by C1l and an alkali/ruad in combination with the alkali, a composition cut that has excellent penetration and decomposition power against solidified scum can be obtained. If this is applied to a metal surface, the solidified scum will swell sufficiently, making removal easier.

J) Below, a description of the uninvented composition for cleaning metal surfaces. It exhibits excellent permeability and decomposition power in recryly, and contains sodium salt or potassium salt of althyl diphenyl ether sulfonate.

Kakaralki/L diphenyl ether sulfonate has 4 to 18 carbon atoms. It preferably has 8 to 18 alkyl groups, and can be produced by reacting furkyldiphenyl ethers with chlorosulfonic acid. Specifically, lema, octyl sifuconinyl ether salt,/nyldiphenyl ether sulfonate.

Tsuu 11 diphenyl ether sulfo/@a,
Examples include stearyl diphenyl ether sulfo/acid.

The second important thing is that fatty acid alkanolamide is contained as a substance that exhibits a phase effect with the alkyl diphenyl ether sulfonate.

Such fatty acid γ-lkanolamide is synthesized by condensation of γ-lkanolamine and fatty acid. Here, examples of the alkanolamine include mono, noeta/-
Examples include alcoholic amine, jetanolamine, monoimpropanolamine, diimpropanolamine, etc.
Fatty acids include caprylic acid, capric acid, and lauric acid.

Myristic acid, valmitic acid, stearic acid.

Examples include ole f) acids. Fatty acid alkanolamides synthesized in this way include the l:27 type and the 1:
1 mole type Kah”), 1:2 mo/shim and tt
It is a condensate of two moles of alkanolamines on fatty acids. On the other hand, the 1:1 mole type is a problem of 1 ton of fatty acid and 5 moles of alkanol, but in order to facilitate the reaction, the fatty acid may be converted into metholester. In both cases, the reactions are amide and teraz-do, ester-i
-I unreacted fatty acids. It is presumed to be a mixture of alkanolamines, etc. Since the former is water-soluble and the latter is m-soluble, it is generally preferable to use the 1:2 molar form of the former.

Second, an alkaliamide obtained by adding 10 moles of ethylene/(oxide) to a fatty acid alkanolamide is also preferable because it improves water solubility.However, if 13 moles of ethylene oxide are added If the amount exceeds 10 moles, the permeation and decomposition performance of flucanol gamma amide into the assimilated scum will be adversely reduced, which is not preferable. Preferred compounds for these ethanolamides include the following compounds.

Lacryl a! A condensate of 21 moles and 2 moles of jetanolamine.

A condensate of 1 mole of oleic acid and 2 moles of jetanolamine.

A condensate of a compound obtained by adding 5 moles of enalene to 1 mole of lauryl M and 2 moles of jetanolamine.

A condensate of 1 mol of methyl laurate and 1 mol of jetanolamine.

What is important for M3, a condensate of 1 mol of lauryl filter and 1 mol of monoethanolamine, is that it contains an alkaline compound as an auxiliary agent that further promotes the permeability and decomposition power of the above-mentioned components against the solidification 7 cam. be.

Such gamma alkaline compounds are inorganic builders and/or caustic alkalis, including inorganic Hilter and tertiary sodium phosphate, viroline, tetoflic acid, hexametaphosphoric acid, and orthosilicic acid.

Examples include metasilicic acid. On the other hand, examples of the caustic alkali include caustic soda, caustic potash, carbonate sorta, and ammonia.

When using a metal surface cleaning composition consisting of the compounds mentioned above to remove solidified scum, the orientation ratio of the compound should be alkylnophenyl ether sulfonate to solids in the cleaning agent. It is preferable to mix 10 to 75% by weight of fatty acid alkali/lumide, and 10 to 75% by weight of inorganic bilter and/or caustic alkali. The concentration of such solids can be used at 5 to 30% by weight, but from the viewpoint of workability and safety, the concentration is 10 to 20% by weight.
% by weight is preferred.

Of course, if necessary, a known nonionic surfactant may be added to the extent that the effects of the present invention are not lost.

When such a three-component composition is applied to the solidified scum, these compositions quickly penetrate into the solidified scum and sufficiently swell the solidified scum, thereby facilitating the removal of the solidified scum. The cleaning composition is effective in removing solidified scum on metal surface concavities in heating parts, such as heater plates and hot rollers, but it also removes solidified scum on surfaces other than heating parts, such as in water jet rooms υ). It is also effective in removing solidified scum.

The present invention will now be described in detail with reference to Examples.

Example-1 A stainless steel plate for infrared moisture At measurement with a diameter of 80cm and a radius of 10fi was filled with 21 active ingredients of a fiber treatment agent and heat-treated for 60 hours in a turn-type hot air dryer at 230°C. 111 drops of detergent (active ingredient 10% by weight) were added, and after 20 seconds, it was quickly wiped off with gauze, and the cleaning status of the stainless steel plate was evaluated according to the following 5-level # evaluation score.

The fiber treatment agent used in the model test was Poly! It is a mixture of 91k1% of Ruyalene oxide and 5% by weight of alkyl sulfonate Na salt. The results are shown in Table-■.

<Evaluation of anti-purifying power> Q: Dirt falls on the base (T) Most of it falls △ Half falls x Slightly falls x It can be seen that the solidified scum can be easily removed by using the following cleaning agent.

Example 2 When polyethylene terephthalate was melt-spun at a spinning speed of 3300 vILZ, a treatment composition consisting of 95% by weight of polyalkylene oxide and % by weight of Na salt (furyl sulfone) was emulsified with an aqueous emulsion. 1IF1j101 was used as the weight, and the yarn was deposited so that the amount of yarn adhesion on the front and side of the yarn was 0.3% by weight. Obtained 115
A denier/36 filament undrawn yarn was drawn at a drawing ratio of 1.5 using a urethane external friction false twisting device equipped with a 45 m diameter disk. Heater temperature 220℃.

Friction disc rotation speed 6250 ypm, 7JI] Machining speed 7
After stretching at 00 m/min, false twisting was performed.

After 2 weeks of continuous false twisting, the heater was cleaned using the conventional cleaning agent A and the conventional cleaning agent F in Example 1. As a result, the cleaning agent of the present invention was easily cleaned. I was able to remove the solidified scum on the heater, but with the conventional cleaning agent F, the solidified scum did not come off easily even if I rubbed it with a bamboo spatula, and even after applying the cleaning agent again and cleaning L7, the solidified scum was completely removed There wasn't.

Claims (1)

Claims: A composition for cleaning metal surfaces, comprising an alkyldiphenyl ether sulfonate represented by the following general formula CI (11), a fatty acid, a lamide, and an alkaline compound. The composition for cleaning metal surfaces according to claim tl), wherein the fatty acid alkanol amide of general formula (2) is a 1:2 molar fatty acid alkanolamide. (31) The composition for cleaning metal surfaces according to claim (1), wherein the fatty furcaramide is a fatty furcaramide to which 1 to 10 moles of adilene oyanide are added.