JPS62276078A - Dust control product and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention provides a dust control product such as a dust control product, such as a dust cover, motsupu, and mat, which can be cleaned or dusted in a dry state, and a method for manufacturing the same. More specifically, the present invention relates to a dust control product made of oil-treated nylon synthetic fibers that has significantly improved restaining properties while maintaining excellent levels of dust adsorption and dust retention, and a method for producing the same.

(Prior art) In recent years, so-called chemical cleaning tools or dry maintenance cleaning tools have been widely used as cleaning tools that can be cleaned without getting hands wet, and this type of material is used in various fields such as cleaning motsupu, dust removal mats, dust removal mats, etc. It has come to be widely used.

Such dust control products are produced by emulsifying a self-emulsifying and self-exhausting oil composition containing an oil agent and a surfactant having a cationic active group in water, and immersing fibers in this aqueous emulsion. It can be obtained by adsorbing and retaining the oil composition on.

Dust control products are generally supplied to customers on a rental basis. In other words, this product is lent to a consumer for a certain period of time, and when the product becomes dirty due to cleaning, etc., it is recycled through washing and oil treatment, and then supplied to the consumer again.
In order to reduce costs, it is important to increase the number of repeated uses as much as possible.

(Problems to be Solved by the Invention) Oil impregnation treatment has been successful for cellulose fibers such as cotton fibers, but when applying this to synthetic fibers, especially nylon fibers, oil adsorption treatment and use are necessary. It is acknowledged that this poses a serious problem when it comes to washing finished products.

That is, when cellulose fibers are immersed in an aqueous emulsion of an oil composition, the liquid becomes transparent after a few minutes of treatment, and the adsorption of the oil is completed, and the amount of oil adsorbed on the cellulose fibers is at a high level of up to 50% by weight. However, when nylon fibers are immersed in the emulsion, the liquid remains cloudy and the amount of oil adsorbed is only 5% by weight at most.

In addition, when nylon fibers are adsorbed with an oil composition containing a cationic surfactant, the fibers are significantly re-contaminated due to re-adsorption of dirt, so oil-impregnated fibers are supplied for use in dust control products for rentals. difficult to do.

Therefore, an object of the present invention is to provide a synthetic fiber-based dust control product that smoothly and efficiently adsorbs oil agents onto synthetic fibers, particularly nylon fibers, and has excellent dust retention and recontamination prevention performance.

(Means for Solving the Problems) The dust control product of the present invention is made by adsorbing and retaining a dust control oil composition containing an oil-soluble anionic surfactant and a nonionic surfactant on the substrate of nylon synthetic fibers. It is characterized by

The above dust control product combines a nylon-based synthetic fiber substrate and an oil-in-water emulsion of a self-emulsifying, mono-exhaustive oil composition containing an oil-soluble aniole surfactant and a nonionic surfactant to the same potential as the nylon. Points or less (5,
35 or less) to adsorb oil onto the fibers.

(Function) Nylon fibers have completely different charging characteristics in water from cotton fibers and other synthetic fibers such as vinylon fibers, polyester fibers, and acrylic fibers.

That is, the ζ (zeta) potential of the latter fiber is negative over a wide pH range, whereas the ζ potential of the nylon fiber is negative over a wide pH range.
There is an equipotential point at H5, 35, and the ζ potential is negative on the alkaline side of this pH value and positive on the acidic side.

As already mentioned, when a cationic surfactant is adsorbed and retained on nylon fibers, recontamination occurs significantly. In other words, the ζ potential of the nylon fiber is maintained positive on the acidic side of the above-mentioned equipotential point, and an oil composition containing an anionic activator is applied to this, thereby recontaminating the oil-impregnated nylon fiber. The purpose is to provide a dust control product that eliminates this tendency and provides excellent dust retention and migration resistance while providing excellent adsorption and retention.

It is also extremely important that the anionic surfactant used in the present invention is oil-soluble. That is, by using an oil-soluble surfactant, the surfactant dissolves into the emulsion particles made of oil, making it possible to effectively maintain the emulsion particles in a negative state. It is also important to use an activator in combination with a nonionic surfactant; if the anionic surfactant is used alone, it is difficult to stabilize the emulsion for adsorption treatment, and as a result, uneven adsorption is likely to occur. By using an activator in combination, this drawback is also overcome.

(Operations and Effects of the Invention) According to the present invention, a nylon-based oil-impregnated dust control product with excellent re-fouling resistance is provided for the first time by adsorbing and retaining an oil agent containing a 7-ionic surfactant on nylon am. It became possible. Also,
Since it has become possible to adsorb a relatively large amount of oil to nylon fibers, it has become possible to improve dust adsorption and dust retention, and because the oil is evenly and firmly adsorbed by chemical adsorption. Also, the trouble of the oil agent migrating to the wiping surface is effectively prevented.

Furthermore, since it is based on nylon fibers, the abrasion resistance and strength of the fibers are improved, making it possible to extend the service life of dust control products, and by making it possible to use crimped fibers, It is also possible to improve the texture.

(Description of Preferred Embodiments of the Invention) The oil composition used in the present invention contains an oil agent, an oil-soluble anionic surfactant, and a nonionic surfactant as essential components.

As the oil agent, any mineral oil and/or synthetic lubricating oil conventionally used in this type of oil-impregnating treatment can be used. As the mineral oil, any paraffinic, naphthenic, aromatic hydrocarbon, or a mixture thereof can be used. Specifically, liquid paraffin, spindle oil, machine oil, refrigeration oil, and other petroleum oils can be used. Lubricating oil etc. are used.

As the synthetic lubricating oil, polyolefin oil (α-olefin oil), polyglycol oil, polybutene oil, alkylbenzene oil, and other synthetic lubricating oils can be used. These oils can be used alone or in combination of two or more.

As the oil-soluble anionic surfactant, any oil-soluble surfactant having a 7-ion active group such as a carboxylate or a sulfonate can be used. The most preferred example is sodium dialkylsulfosuccinate such as sodium di-2-ethylhexylsulfosuccinate, and petroleum sulfonates and higher fatty acid alkaline earth metal salts such as calcium stearate and magnesium stearate may also be used. .

Examples of nonionic surfactants include nonionic surfactants with an HLB of 5 to 13, particularly 6 to 11, such as polyoxyethylene alkylphenyl ether, especially those with an added mole of ethylene oxide of 2 to 6; Polyoxyethylene alkyl ethers, especially those with an added mole of ethylene oxide of 2 to 6, are preferably used.

The oil-soluble anionic surfactant is preferably used in an amount of 0.1 to 3% by weight, particularly 0.3 to 1% by weight, based on the oil agent.
Also, nonionic surfactants are O1 per oil agent! It is preferred to use amounts of from 5% to 5% by weight, especially from 0.5 to 2% by weight.

Of course, any known ingredients can be added to the oil composition used in the present invention according to known formulations. For example, the oil composition may contain one or more of antibacterial agents, antifungal agents, colorants, fragrances, sequestering agents, flame retardants, flame retardants, and the like.

Examples of nylon-based synthetic substrates include 6-nylon, 6.6-
Those made of any nylon fiber, such as nylon, or in combination with cellulose fibers such as cotton, mercerized cotton, and regenerated cellulose fibers, or other synthetic fibers such as polyvinyl alcohol fibers, acrylic fibers, and polyester fibers. These are things made of twisted yarn or string like motupu, woven fabrics like wiping cloth,
It may be made of a knitted or nonwoven fabric, or a tactile synthetic fiber such as a dusting muff.

When impregnating fibers with oil, the aforementioned oil composition is made into an oil-in-water emulsion. The concentration of the oil composition in water is generally 0.01 to 10% by weight, particularly 0.5 to 5% by weight.
The size of the emulsion particles is generally preferably in the range of 0.1 to 50 ILm.

Oil-impregnating treatment is performed by bringing this oil-in-water emulsion into contact with nylon synthetic fibers. Generally, it is desirable to immerse the fibers in the emulsion to cause self-exhaustion of the emulsified particles. In this case, the pH of the system is generally 5.4 or less, at which the ζ potential of the nylon fiber becomes positive.
In particular, it is desirable to maintain the pH between 3 and 5, and for this purpose, the treated fibers are pretreated with an acetic acid aqueous solution, and the
The temperature during the treatment, which is preferably set to n, is not particularly limited, but it is generally desirable to set it to a temperature of 20 to 50''O, and the treatment time is suitably in the range of 1O to 20 minutes.

The treatment of fibers with an emulsion of the oil composition can be carried out either batchwise or continuously.

This treatment is most easily carried out by dipping the fibers in the emulsion described above, but it can also be carried out by spraying the fibers with the emulsion. Furthermore, when the fibers are continuously treated with the oil emulsion, the oil emulsion and the fibers may be brought into contact in a countercurrent or cocurrent manner.

The fibers that have been impregnated with the oil agent are then subjected to dehydration treatment until the absorbed moisture contained in the fibers becomes 70% by weight or less, particularly 60% by weight or less. During this dehydration treatment, it is a remarkable feature that the adsorbed oil agent is not substantially desorbed by re-emulsification, even though the present invention is highly dehydrated. The dehydration treatment can be easily carried out using a dehydrator known per se, for example, a centrifugal dehydrator, a pressure dehydrator such as a pressure roll, a vacuum dehydrator, or the like. The dehydrated oil-impregnated fibers are then dried at a temperature of 60 to 80° C. to form the final loading.

In the present invention, the adsorption amount of the oil composition to the fibers is
Generally speaking, from 5 to 40% by weight, especially from 1O to 30% by weight.
A range of weight percent is suitable.

(Example) Example 1 An oil composition having the following formulation was prepared.

Liquid paraffin 88.8 parts by weight Di2-ethylhexyl sulfur 1 Number of moles added to sodium phosuccinate polyoxyethylene 4) HLB 8.9 The above oil composition has good compatibility and is capable of forming a stable emulsion. Admitted.

The crimped nylon fiber cloth was treated with an acetic acid aqueous solution, and then oiled with an aqueous emulsion of the above oil composition under the following conditions.

Bath temperature 40℃ pH 4.0 Bath ratio 1:25 Oil amount 10% by weight per fiber 1 after start of treatment
It was confirmed that most of the oil was adsorbed within 0 minutes, and the liquid became transparent within 15 minutes.

After dehydration and drying, the crimped nylon cloth was subjected to an oil extraction test using methylene chloride as a solvent, and the adsorbed oil content was measured, and the oil content per fiber was 8.7%.

The following tests were conducted on the oil-impregnated nylon cloth.

(i) Dust test, put the sample (weight WF) into a bottle, and then
Add twice the amount of fine silica sand powder and 5 rubber balls and stir for 1 minute.Then, take out the sample on a wire mesh and leave it for 10 minutes. The front and back plates were twisted 100 times using a dust tester and weighed (weight Wo). The dust ratio (D) was calculated from the following formula as the average value of three samples each.

(ii) The cleaning test sample was left overnight to adsorb excess dust by massaging and compressing the dust, and the sample was washed for 15 minutes using a household washing machine at 50°C and a cleaning concentration of 5%. The sample was washed for a minute, and after drying, the reflectance of the sample was measured to determine the cleaning efficiency. Here, the cleaning efficiency is expressed by the following formula.

R3: Y value before washing RII: Y value after washing RO: White cloth Y value (iii) The contaminated test sample was heated at 60°C and 10g/fl for 30 minutes using a turgotometer (100 rpm). It was contaminated, the reflectance was measured, and the contamination rate was determined using the following formula.

R5: Y value before contamination Rw: Y value after contamination (ii) Place the migration test sample on the object to be cleaned with a constant load (12,5 g/c
Intestine 2) Leave it under the conditions of 20℃ and RH 65%, 48
After the elapse of time, the amount of dust control oil transferred to the object to be cleaned was determined as the transfer amount using the following formula.

The results obtained are shown in Table 1.

Comparative Example 1 The crimped nylon fiber cloth used in Example 1 was used as a sample without being subjected to oil impregnation treatment. The results are shown in Table 1.

Comparative Example 2 A solution of liquid paraffin in methylene chloride was uniformly sprayed onto the crimped nylon fiber cloth used in Example 1 so that the amount of oil per fiber was 10% by weight, and the sample was dried. . The results are shown in Table 1.

Comparative example 3 An oil composition having the following formulation was prepared.

Liquid paraffin 88.8 parts by weight Imidacillin cation 1 Surfactant polyoxyethylene nonyl 2 Phenyl ether A crimp nylon fiber cloth is oiled at pH 7.5 using an aqueous emulsion of the above oil composition. teeth,
Oil-impregnated fibers were produced in the same manner as in Example 1. The results obtained are shown in Table 1.

1st friend! UJ! Example 11 20% 85% 25% 0.14
% Comparative Example 1 50% 85% 20% 0%
Comparative example 2120% 80% 40% 0.20
% Comparative Example 3120% 85% 85% 0.1
5% Example 2 A rolled nylon day mop was placed in a mini washer, and the pH was adjusted to 4.5 at a temperature of 40°C and by adding acetic acid.
Adjusted to. The oil composition used in Example 1 was added to this system in an amount of 10% by weight per fiber, and the oil was emulsified and absorbed into the fibers for 10 minutes while stirring.

The treated motsupu was dehydrated and dried to produce a product.

The amount of oil adsorbed onto the fibers was approximately 8.5% by weight, but the dust ratio measured by the method described above was 120%, indicating excellent performance.

Patent Applicant Section Officer's Office Proceedings A Written Amendment (
Spontaneous) June 19, 1985 Michibe Uga, Commissioner of the Patent Office1, Indication of the case, Patent Application No. 117628 of 19882, Name of the invention Dust control product and its manufacturing method3, Person making the amendment Relationship with the case Patent applicant address: 4-11-16 Toyosaki, Oyodo-ku, Osaka Name: Yuskin Co., Ltd. 4, Agent/Person: 105-5, No date of amendment order 6, Claims of the specification to be amended and claims of the invention The scope of claims after correction in the Detailed Description section ■ is corrected as shown in the appended claims.

II. Detailed Description of the Invention (1) On the 5th line of the specification, line 13, r (5,35 or less)
” will be deleted.

(2) On page 8, line 15, what is written as “refrigerated oil”? “Corrected to Refrigerating Machine Oil J.

(3) From the 16th line to the 17th line on page 1O, the phrase [Dusting Mac] is corrected to r Dusting Mat J.

(8) The nylon-based synthetic fiber matrix is coated with oil-soluble anions (1
) A dust control product characterized by adsorbing and retaining a dust control JL oil composition containing an oil-soluble anionic surfactant and a nonionic surfactant on a nylon-based synthetic RAM substrate.

(2) The amount of oil-soluble anionic surfactant per oil composition is 0.
1 to 3% by weight and 0.1 to 5% nonionic surfactant
% by weight of the dust control product according to claim 1.

(3) The dust control product according to claim 1, wherein the oil-soluble anionic surfactant is a dialkyl sulfosuccinate.

(4) The dust control product according to claim 1, wherein the nonionic surfactant has an HLB of 5 to 13.

(5) 5 to 40% by weight of oil composition per synthetic fiber substrate
A dust control product according to claim 1, wherein the dust control product is deposited in an amount of .

A surfactant wave is brought into contact with an oil-in-water emulsion of a self-lactacing, self-exhausting oil composition containing a nonionic surfactant at a pH of 1,000 ml, and the oil composition in the emulsion is brought into contact with the oil composition in the emulsion. A method for producing a dust control product, characterized in that the product is adsorbed into a synthetic fiber matrix.

Claims (1)

[Scope of Claims] (1) A dust control product characterized by having a dust control oil composition containing an oil-soluble anionic surfactant and a nonionic surfactant adsorbed and retained on a nylon-based synthetic fiber substrate. (2) The amount of oil-soluble anionic surfactant per oil composition is 0.
1 to 3% by weight and 0.1 to 5% nonionic surfactant
A dust control product as claimed in claim 1 in an amount of % by weight. (3) The dust control product according to claim 1, wherein the oil-soluble anionic surfactant is a dialkyl sulfosuccinate. (4) The dust control product according to claim 1, wherein the nonionic surfactant has an HLB of 5 to 13. (5) 5 to 40% by weight of oil composition per synthetic fiber substrate
A dust control product according to claim 1, wherein the dust control product is deposited in an amount of . (8) self-emulsifying nylon synthetic fiber matrix containing an oil-soluble anionic surfactant and a nonionic surfactant;
an oil-in-water emulsion of a self-exhausting oil composition;
．． A method for producing a dust control product, which comprises contacting at a pH of 35 or lower to adsorb the oil composition in the emulsion into a synthetic fiber matrix.