JPS6323316B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention exhibits uniform and high adhesion to fiber threads during high-speed running, and has little scattering.
Therefore, the present invention relates to a straight type oil agent for fiber threads that can efficiently and economically impart desired smoothness, antistatic properties, scouring properties, etc. to the fiber threads under a good working environment. In recent years, many efforts have been made to speed up and save labor in textile manufacturing processes in order to improve productivity. In particular, in the manufacturing process of synthetic fibers such as polyester and nylon, technological developments such as POY-DTY and friction twisting are progressing. Furthermore, it is expected that the speed will exceed 1000 m/min, and such speed increases are also being promoted in higher-order processing processes such as warping, twisting, knitting, and weaving. By the way, in these various processing processes,
In order to improve operability and yield, etc., the spinning process,
During the false twisting process, warping process, winder process during turning, etc., fiber processing oil is applied using the straight roller touch method. However, the straight type lubricant that is supplied at this time is intended to impart smoothness and antistatic properties to the fiber yarn, but as high-speed processing becomes popular as mentioned above, the straight type lubricant that is supplied at this time is required to impart smoothness and antistatic properties to the fiber yarn. It becomes difficult to uniformly apply a sufficient amount of oil to the fiber threads, and furthermore, the scattering of the oil causes troublesome problems such as loss of the oil and contamination of the working environment. For this reason, there is a strong demand in the industry for the development of an oil agent that exhibits uniform high adhesion and less scattering when applying oil straight to fiber threads running at high speeds. In general, straight type oils contain mineral oil, natural or synthetic ester oil, polyether oil, etc. as lubricating ingredients, and if necessary, various surfactants as emulsifiers and antistatic agents, stabilizers, and antioxidants. ,
Conventionally, in order to improve the adhesion of such straight type oils, they contain rust inhibitors, etc.
Various proposals have been made. For example, there are straight type oils that use high viscosity lubricating oil as the lubricating component of the oil or add a viscosity improver to the oil to increase the viscosity of the oil itself and improve its adhesion. However, this type of oil has the serious drawback that it is clearly insufficient in improving adhesion and, above all, the frictional properties are reduced. For example, 0.05 to 2% by weight of a water-insoluble lipophilic silicone oil having a viscosity of less than 60 cst at 20°C may be added to an oil agent consisting of a lubricating oil and a POE alkyl ether and/or PEG alkyl ester type nonionic surfactant. ,
There is a straight type oil agent which has improved antistatic properties, etc. (Japanese Patent Publication No. 17080/1983). However, even this oil agent is still insufficient in terms of improving adhesion and scattering prevention properties. In view of the above-mentioned circumstances, the inventors of the present invention conducted extensive research to obtain a straight-type lubricant that exhibits a high degree of adhesion and anti-scattering properties to fiber threads during high-speed running. Furthermore, if necessary, a specific hydrophilic silicone oil is added to the fiber treatment composition (hereinafter simply referred to as base oil) containing an antistatic agent, etc. to reduce the surface tension.
The present invention was completed based on the discovery that an oil agent adjusted to 23 to 28 dynes/cm dramatically exhibits the desired effect. That is, the present invention provides a fiber treatment composition containing 60 to 100% by weight of lubricating oil, 0 to 40% by weight of surfactant, and 0 to 10% by weight of emulsification regulator.
By adding 0.005 to 1% by weight of hydrophilic silicone oil modified with at least polyalkylene glycol groups, the surface tension at 25°C is 23 to 28 dynes/cm.
This invention relates to a straight type oil agent for fiber threads which is adjusted to the following. In the present invention, the lubricating oil constituting the base oil is one or more selected from mineral oils, animal and vegetable oils, natural or synthetic esters, and other synthetic lubricating oils. Specifically, for example, liquid paraffin,
Mineral oils such as spindle oil and machine oil, animal and vegetable oils such as pine oil and olive oil, synthetic lubricating oils such as polybdenum, liquid esters such as methyl oleate, octyl palmitate, 2-ethylhexyl stearate, ethylene glycol diolate, and dioctyl phthalate. etc. The base oil containing such a lubricating oil may also contain additional lubricating oils, antistatic agents selected from various surfactants, emulsifiers, emulsification modifiers, antioxidants, and rust inhibitors, as necessary. There are no particular limitations on these types. Further, in the present invention, the silicone oil added to the above-mentioned base oil agent is a hydrophilic silicone oil.
The hydrophilic silicone oil, which dissolves or emulsifies and disperses in water, has advantages such as being able to ignore such problems, whereas fibers treated with oil agents containing silicone oil are generally less likely to be scoured in subsequent processes. be. In the present invention, when 0.005 to 1% by weight of such hydrophilic silicone oil is added to the base oil, the surface tension of the oil after addition is 23 to 28 dynes/cm (25°C, the same applies hereinafter). use something Only hydrophilic silicone oils that exert such an influence on the surface tension of the base oil exhibit the desired effect of the present invention. However, in the present invention, numerical values regarding surface tension are determined by the vertical plate method using a CBVP type surface tension meter manufactured by Kyowa Kagakusha. Therefore, the hydrophilic silicone oil is modified with at least a polyalkylene glycol group, and the polyalkylene glycol group is a group corresponding to a single polymer such as polyethylene glycol or polypropylene glycol, or a mixed polymer thereof, or a group thereof. The terminus not bonded to silicon is a group whose end is blocked with a short-chain alkyl group, a long-chain alkyl group, or an alkylphenyl group, but in addition to such polyalkylene glycol groups, alkyl groups, alkylphenyl groups, etc. It may also be mixed and modified. Specifically, for example, Shin-Etsu Chemical's KF-
851, SH-8400 manufactured by Toray Silicone Co., Ltd.
-3771 etc. The straight type oil agent for fiber yarn according to the present invention includes:
Hydrophilic silicone oil is added to the base oil containing 60 to 100% by weight of lubricating oil, 0 to 40% by weight of surfactant, and 0 to 10% by weight of emulsification modifier, as explained above, and the oil after addition is The surface tension was adjusted to 23 to 28 dynes/cm. Generally, when various silicone oils are added to a base oil, the surface tension of the oil decreases depending on the amount added, but in this case, overall, the surface tension of the oil and the adhesion of the oil to the fiber threads are related. For example, there is no simple proportional relationship between them. Here, the present invention adds a specific hydrophilic silicone oil as described above to the base oil to adjust the surface tension of the oil, and when the surface tension is 23 to 28 dynes/cm, the oil is applied to the fiber threads. This takes advantage of the characteristics of hydrophilic silicone oil, which provides extremely excellent adhesion. Figure 1 shows the results under the same conditions as test section 1, which will be described later.
It is a graph illustrating the relationship between the surface tension adjusted by the hydrophilic silicone oil having the above-mentioned characteristics and the adhesion to the fiber thread when two types of oil agents are supplied straight to the fiber thread. In the figure, curve 1 shows the case where KF-851 manufactured by Shin-Etsu Chemical Co., Ltd. was added as a hydrophilic silicone oil to the base oil, and curve 2 shows the case where SH-8400 manufactured by Toray Silicone Co., Ltd. was added to the same base oil as a hydrophilic silicone oil. This is the case. As is clear from this figure 1,
In more detail, as is clear from the test results described below, the adhesion of the two systems of oils to the fiber threads is such that their surface tensions are 23 to 28 dynes/
It draws a unique almost parabolic curve with a relatively sharp peak in the cm range, and it is not just a matter of adding various hydrophilic or lipophilic silicone oils to lower the surface tension of the oil. It has been found that a straight type oil agent in which the surface tension is adjusted to 23 to 28 dynes/cm by adding a specific hydrophilic silicone oil as described above in the present invention is suitable. The straight type oil agent for fiber yarn according to the present invention includes:
The lubricating method is not particularly limited and may be any of the roller touch method, guide nozzle method, spray method, etc., but the roller touch method is effective. Therefore, the present invention can be applied to synthetic fibers such as polyester, nylon, and polyacrylonitrile, as well as chemical fibers such as rayon and cotton, and other natural fibers. , exhibits a high degree of adhesion and anti-scattering properties, and ultimately provides the desired smoothness, antistatic properties, scouring properties, etc., efficiently and economically in a favorable working environment. There is an effect that can be done. Next, the configuration and effects of the present invention will be made more specific through examples and the like.・Test category 1 [60 seconds mineral oil = 85 parts] + [polyoxyethylene (5 mol) nonyl phenyl ether = 10 parts] + [oleyl alcohol = 5 parts] base oil (however,
A straight type oil agent was prepared by adding various silicone oils listed in Tables 1 and 2 to (all parts by weight), and this was applied to the nylon filament processed yarn on a winder stand as follows. #56 Texmat oil supply device manufactured by Murata Machinery Co., Ltd., oil supply method = straight roller touch method, oil supply roller = 70mmφ
Made of stainless steel, oil supply temperature = 25℃, yarn speed = average
360m/min. The measurement or evaluation results in this case are
It is shown in Table and Table 2. The measurement and evaluation methods are as follows. ‥Surface tension (dynes/cm, 25°C): Measured using a CBVP type surface tension meter manufactured by Kyowa Scientific Co., Ltd. using the vertical plate method. ‥Adhesion (wt%): Each oil was coated with a lubricating device in which the rotational speed of the lubricating roller and the contact angle of the thread were adjusted so that the adhesion amount of Comparative Example 1 (blank) listed in Table 2 was 0.5 to 1.0 wt%. An oil agent was supplied, and the amount of each adhesion was measured by the Soxhlet extraction method using diethyl ether. ‥Scatter prevention: Adjust the number of revolutions of the oil supply roller so that the amount of each oil agent attached is approximately 3%, and during 5 minutes of oiling, the oil agent that was shaken off and scattered from the oil supply roller and the thread after passing through the oil supply roller will be removed from the paper. Receive it at
Observe the degree with the naked eye, ○ = small amount of scattering, △
= Slightly large amount of scattering, × = Significantly large amount of scattering,
It was evaluated in three stages. ...Scouring property: 10 tube knitted fabrics made of yarn filled with approximately 3% of each oil agent
The sheets were successively scoured in the same scouring bath as follows.
Bath liquid amount = 1, bath ratio = 1:50, scouring agent = 1 g of Leopol N (manufactured by Takemoto Yushi Co., Ltd.), bath temperature = 40
°C, time 5 minutes, aperture = 200%. Changes in the scouring rate and the amount of silicon in the residual oil in this case were measured by Soxhlet extraction with diethyl ether and analysis of IR spectrum, and evaluated based on the following criteria.

【table】

【table】

【table】

【table】

[Table] (Note: Throughout Tables 1 and 2, the silicone oils used are as shown in the attached table below, and the contents of the silicone oils are the same in Test Category 2.)

[Table] As is clear from the results in Tables 1 and 2, the straight oil agent (each example) according to the present invention,
That is, the surface tension is 23 to 28 when 0.005 to 1% by weight of a hydrophilic silicone oil modified with at least a polyalkylene glycol group is added to the base oil.
It can be seen that all dyne/cm straight type oils exhibit a high degree of adhesion and scattering prevention, and are producing the desired effects. Although not described, similar good results in smoothness and antistatic properties were obtained in each of the Examples and Comparative Examples.・Test Category 2 A straight type oil was prepared by adding various silicone oils listed in Tables 3 and 4 to the various base oils listed in Tables 3 and 4, and this was applied to polyester processed yarn on a false twisting machine table, and the following I refueled like that. Lubricating device manufactured by Nippon Spindle, lubricating method = straight roller touch method, lubricating roller = 60 mmφ chrome plated satin finish, lubricating temperature = 25°C, thread speed = average 100 m/
Minutes. The measurement and evaluation results in this case are shown in Tables 3 and 4. The measurement and evaluation methods are the same as in test category 1.

【table】

Claims (1)

[Claims] 1 Lubricating oil 60-100% by weight and surfactant 0
0.005 to 1% by weight of a hydrophilic silicone oil modified with at least a polyalkylene glycol group is added to a fiber treatment composition containing ~40% by weight and 0 to 10% by weight of an emulsification modifier, and the composition is heated at 25°C. Straight type oil for fiber yarn with surface tension adjusted to 23 to 28 dynes/cm.