JPH0663178B2 - Cotton yarn processing agent - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cotton yarn spinning treatment agent which can be applied to cotton raw cotton to improve its spinnability.

(B) Conventional technology Cotton has the characteristics that it has a good texture, is highly hygroscopic, and has excellent dyeability, and is the most used natural clothing among natural fibers. A large amount of cotton is cultivated all over the world, but the quality of these cottons, that is, fiber length or fiber length, varies depending on the variety, production area, growing environment, etc. The quality and amount of cotton wax on the fiber surface are different, and there are many cases where spinning is difficult with the same spinning method. Some of the raw cotton has a sticky substance called honeydew attached to it. In such raw cotton, the fibers are often wound around the rollers and stopped during the spinning process. Dust removal and opening may not be performed smoothly in the cotton process, and a large amount of nep may be generated in the sliver after the carding process. Conventionally, as a countermeasure for this, the soot blending is performed by adjusting a machine adapted to each raw cotton, adjusting temperature and humidity and other conditions, or by mixing good raw cotton with raw cotton having poor spinnability. I'm wearing. However, as described above, changing the conditions such as the machine, temperature and humidity, and the combination of mixed cotton, the ratio, etc. for each type of raw cotton has a limited range of adjustment, and is extremely complicated, time-consuming, and unskilled. It is a work that requires the above-mentioned technology, and a raw cotton with good spinnability that is suitable for spinning high-quality products, and a raw cotton with poor spinnability that does not always yield high-quality spun yarn with high production efficiency. Blending is by no means a good idea, and the emergence of means that can more easily, efficiently and rationally solve such problems is desired.

On the other hand, in order to improve the spinnability of short fibers, it is common practice to add additives such as oils, surfactants and other auxiliaries to the raw material fibers during the spinning of artificial fibers or scoured wool. However, in the case of cotton, almost nothing has been done except an attempt to add an oil agent for the purpose of suppressing the generation of dust during spinning. This is because there are many cases in which the raw cotton itself has no problem in spinning property, and the cotton wax adheres to the surface of the cotton fiber, and it has been considered that it is not necessary to add the above-mentioned additive again.

Cotton wax, which covers the surface of cotton fibers, is a hydrophobic substance whose main component is higher fatty acid ester.
Surface physical properties such as friction between fibers, friction between fibers and metal, focusing properties and electrical properties are influenced. Therefore, in addition to the presence of honeydew as described above, the quality and quantity of each cotton wax for each raw cotton Fluctuations have a subtle effect on spinnability. It is considered that if the effects of the variation in the quality and amount of the cotton wax and the presence of honeydew on the spinnability of the raw cotton can be reduced by adding some kind of treating agent, the spinnability and productivity will be greatly improved.

(C) Problems to be Solved by the Invention The present invention provides a cotton yarn spinning treatment agent which can be added to raw cotton during spinning of cotton to improve the spinnability regardless of the type of raw cotton, the presence of honeydew and the like. Is to provide.

(D) Means for Solving the Problems The present invention provides an ester compound represented by the following general formula (I) (hereinafter simply referred to as an ester compound) in an amount of 90 to 70% by weight and represented by the following general formula (II). The present invention relates to a cotton yarn spinning treatment agent comprising only two components of 10 to 30% by weight of an ether compound (hereinafter simply referred to as an ether compound).

General formula (I); (However, R represents an alkyl group having 12 to 22 carbon atoms, and M represents potassium or sodium.) General formula (II); R ₁ O (C ₂ H ₄ O) _n H (II) (provided that R is ₁ represents an alkyl group having 12 to 22 carbon atoms, and n is
Represents an integer of 10 to 30. The ester compound represented by the general formula (I) is an alkyl phosphate known as an anionic surfactant. In the present invention, as the alkyl phosphate, three kinds of monoester, diester and triester are used alone or in combination, and two kinds of potassium salt or sodium salt are used in alone or in mixture. In the present invention, the alkyl group of the alkyl phosphate has 12 to 22 carbon atoms.
The thing of is adopted. If the carbon number of the alkyl group is less than 12, it is not preferable because the compound becomes sticky and the spinnability deteriorates, and if the carbon number exceeds 22, it is difficult to obtain the compound and it is expensive, so it is economical. It is not preferable from the aspect of. Specific examples of the ester compound include lauryl phosphate potassium salt, cetyl phosphate potassium salt, stearyl phosphate potassium salt and the like.

The ether compound represented by the general formula (II) is polyoxyethylene alkyl ether known as a nonionic surfactant. In the present invention, an alkyl group having 12 to 22 carbon atoms and an ethylene oxide having 10 to 30 moles added are employed. When the number of carbon atoms in the alkyl group is less than 12, the surfactant activity of the compound is lowered, which is not preferable, and when the number of carbon atoms exceeds 22, the compound is difficult to obtain and expensive, which is not preferable from the economical aspect.
When the number of added moles of ethylene oxide is less than 10 moles,
It is not preferable because the action of dispersing the ester compound to be blended at the same time decreases, and when it exceeds 30 mol, the action of dispersing the ester compound reaches the upper limit and does not improve, so addition of ethylene oxide in excess of 30 mol is unnecessary. Is. Specific examples of the polyoxyethylene alkyl ether include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether and the like.

90 to 70% by weight of the above-mentioned ester compound and 10 to 30% by weight of the above-mentioned ether compound can be blended to obtain the treating agent for spinning cotton yarn according to the present invention. When the ester compound content is less than 70% by weight as the compounding ratio of the cotton yarn spinning treatment agent, it is not preferable because the action of covering the adhesive substance or the action of uniformly covering the surface of the cotton fiber is lowered, and more than 90% by weight. However, since the effect of the ester compound is saturated and does not change, it is advantageous to blend an ether compound having other effects into the cotton spinning treatment agent for the excess amount. On the other hand, if the blending ratio of the ether compound is less than 10% by weight, the action of dispersing the ester compound to be blended at the same time is not preferable, and if it exceeds 30% by weight, the blending ratio of the ester compound to be blended at the same time. Is decreased, which is not preferable.
The treatment agent for spinning cotton yarn according to the present invention is generally used by dissolving an ester compound and an ether compound in water and using the solution as an aqueous solution.

(E) Action The ester compound used in the present invention has a friction coefficient similar to that of cotton wax when attached to cotton fibers, has low hygroscopicity and tackiness, and is excellent in antistatic property. The ether compound used in the present invention is compatible with the above-mentioned ester compound and has a function of well dispersing the ester compound. Therefore, when the cotton yarn spinning treatment agent according to the present invention is applied to raw cotton, if the raw cotton contains an adhesive substance, the cotton yarn spinning treatment agent covers the adhesive substance and reduces the tackiness of the raw cotton. Let Further, when the cotton yarn spinning treatment agent according to the present invention is applied to raw cotton, even when the amount or distribution of the cotton wax attached to the surface of the cotton fiber varies, a frictional behavior similar to that of the cotton wax is obtained. By adding the ester compound shown, the performance of the cotton wax can be made uniform over the entire surface of the cotton fiber, and the openability and the removability of impurities can be improved.

(F) Examples Example 1. To 60'S raw cotton from Sudan, 75 parts by weight of potassium salt of cetyl phosphate, 25 parts by weight of polyoxyethylene (15 mol addition) cetyl ether and 900 parts by weight of water were mixed. The adjusted cotton yarn spinning treatment agent was sprayed and applied at 5% by weight (to the fiber weight ... OWf hereinafter, 0.5% by weight in solid content) and air dried. This was passed through each process of kneading cotton, carding and kneading. The sliver obtained was 13.5 oz / yd wrap for blended cotton, 320 gelen / 6 yd sliver for carding, 6 card slivers for drafting and 6.2 times draft (first pass). Six more pieces were supplied and a 6.4 times draft (second passing) was performed to prepare a sliver of 300 gel / 6 yd.
The drawing speed is 60 m / min, and the number of times of winding the rollers during the operation for 30 minutes is 0 for the first pass and 2 for the second pass.
It was once.

On the other hand, as a comparative example, using the same raw cotton as in Example 1,
As it was, that is, without adding the treatment agent for spinning cotton yarn according to the present invention, the same steps as in Example 1, such as mixed cotton, carding and kneading, were passed under the same conditions. The number of roller windings during the 30-minute operation in the drawing step was 7 times in the first pass and 8 times in the second pass.

Example 2. Cotton yarn spinning treatment agents (a) to (d) shown in Table 1 were prepared.

40'S raw cotton, which contains a lot of contaminants and generates a lot of nep, is sprayed with treatment agents (a) to (d) to give 5% OWf (in solid content,
0.5% OWf) and air dried. This was passed through each spinning process. The blended cotton wrap is 14 oz / yd wrap, the carding cotton is 350 gellen / 6 yd sliver, and the card sliver is supplied with 6 card slivers and drafted 6.6 times (first pass). Six slivers of 320 gelene / 6 yd were prepared by supplying 6 bottles and drafting 6 times (the second pass). Furthermore, 6.7 times draft was made by roving, 240 pellen / 30yd roving was made at 50 twists / m, and 38.4 times was drafted by spinning.
A yarn of 40'S was produced at 920 turns / m.

Also, as one of the comparative examples, using the same raw cotton as in Example 2,
As it is, that is, without applying the cotton yarn spinning treatment agent according to the present invention, the same spinning steps as in Example 2 were passed under the same conditions.

During the above steps, the amount of fallen pieces on the mixed cotton, the amount of foreign matters on the fallen piece with carding, the number of neps in the spun web, and the average tenacity of the spun yarn were measured, and the results are shown in Table 2. Show. The amount of foreign matters in the carding is that after removing the fibrous material from the fallen material with a Petri dish analyzer.

As is clear from the results shown in Table 2, the raw cotton to which the cotton yarn spinning treatment agent according to the present invention has been added well removes impurities contained in the raw cotton during each spinning step as compared with the case of the comparative example. In addition, it reduces the number of neps in the web of carding and also reduces the average tenacity of the spun yarn.

(F) Effects of the Invention When the treatment agent for spinning cotton yarn according to the present invention is applied to raw cotton before spinning or nep or sliver during spinning by means such as spraying, the tackiness of raw cotton is reduced and the amount of cotton wax is increased. Since the surface of the cotton fiber can be made uniform even when the distribution is uneven, the occurrence of roller winding and nep in each spinning process can be reduced, and the impurities in the raw cotton can be improved. It has the effect of being removable.
Further, since the cotton yarn spinning treatment agent according to the present invention has good antistatic property, electrostatic troubles at low humidity (in cotton spinning, there are not many electrostatic troubles at normal temperature and humidity, but relative humidity is 40%). In the case of the following, similar to the compound fiber spinning, troubles due to generation of static electricity occur). Therefore, by using the cotton yarn spinning treatment agent according to the present invention, it is possible to improve the spinnability regardless of the type of raw cotton, the presence of honeydew, and the particular effect that the strength of the obtained spun yarn is less reduced. Is played.

Even if an alkyl sulfate is used instead of the ester compound represented by the general formula (I), that is, an alkyl sulfate, the same effect as in the present invention can be obtained, but the alkyl phosphate has a higher degree of effect. Therefore, the present invention is limited to alkyl phosphates.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-48-33193 (JP, A) JP-A-60-110974 (JP, A) JP-A-48-85896 (JP, A) Written by Hirosuke Moriyama " Cotton, Sufu spinning "(S15-10-10) Diamond P. 340-341

Claims (1)

[Claims] 1. A composition comprising only two components, 90 to 70% by weight of an ester compound represented by the following general formula (I) and 10 to 30% by weight of an ether compound represented by the following general formula (II). A cotton thread spinning treatment agent. General formula (I); (However, R represents an alkyl group having 12 to 22 carbon atoms, and M represents potassium or sodium.) General formula (II); R ₁ O (C ₂ H ₄ O) _n H (II) (provided that R is ₁ represents an alkyl group having 12 to 22 carbon atoms, and n is
Represents an integer of 10 to 30. )