JPS6059174A - Spinning oil agent for synthetic fiber - 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 The present invention relates to a spinning oil agent suitable for the spinning process and continuous dyeing of synthetic fibers, and its purpose is to
The object of the present invention is to provide an oil agent that can prevent cart and spinning roller damage in the spinning process and dye spots in the continuous dyeing process by treating fibers with this oil agent.

Conventionally, as a spinning oil for synthetic fibers, in order to improve spinning properties, an oil that is less sticky to the roller is generally used in consideration of antistatic properties, cohesiveness, and flatness properties. . Various oils suitable for this purpose, especially those mainly composed of alkali metal salts of alkyl phosphate esters, are used in combination with nonionic i'i4i agents, anionic activators, amphoteric activators, or cationic activators. Textile oils have been used. (For example, Special Public Service No. 52-3tq
qqI+, JP-A-48-33193, JP-A-52-6
No. 3497, JP-A-54-125797 and JP-A-5
No. 4-138694 etc. ) However, recently there has been a demand for not only improved spinnability but also improved uniformity of subsequent dyeing, and conventional oils are no longer able to meet these demands.

As the dyeing process has become more streamlined and the continuous dyeing method has become widely adopted, the contact time between the dye solution and the fiber is shorter than in the batch dyeing process, making it more likely to cause uneven dyeing. . Dyeing spots especially occur in textiles as warp lines, resulting in inferior quality products and lower yields, which is a big problem.

As a result of examining the cause of this dyeing spot, it was found that the performance of the spinning oil is the main influence, and among the 11 properties of the oil, water repellency has a particularly large effect on the dyeing spot.

Therefore, water-repellent oil agents are not preferred.

The water-repellent property of the oil agent impairs the affinity between the fiber and the dye solution, so if the dye is dyed in a short period of time, the fibers will not be dyed sufficiently, and the water-repellent oil agent will cause slight spots. If so, the textile product will have dye spots. Therefore, in order to prevent dyeing spots, uniform adhesion of the oil to the fibers is required, but it is difficult to prevent dyeing spots only by the uniform adhesion of the oil.

Therefore, in order to eliminate the dyed spots, it is preferable to use an oil agent with excellent water absorption. However, such oils cannot be used in one chair.
However, since the adsorption of the dye to the fiber becomes faster, it is effective in eliminating dye spots.

There will be no problem in spinnability in the spinning process, which is before dyeing. However, spinning oils with good water absorption generally make fibers sticky, resulting in fibers falling onto the cylinder during the cart process during the spinning process, or guides during the spinning process. This causes two problems, such as adhesion of sticky substances to the surface.

In view of the current situation, the inventors of the present invention have developed the present invention as a result of intensive studies in order to obtain extremely excellent dyed products by using a spinning oil that can carry out the spinning process smoothly and does not cause dyeing spots during the dyeing process. reached.

In other words, the present invention is an oil agent whose main component is an alkali metal salt of an ester of a higher alcohol or its alkylene oxide and phosphoric acid, and has a water absorption rate of 10.
The object of the present invention is to provide a spinning oil agent for synthetic fibers, which is characterized by having a weight percent of 1 or more and an adhesive peeling force of 150 g or less.

The application of an oil agent is carried out using a roller method or a dipping method in the drawing step 1 after melt-spinning synthetic fibers, and a knee fusion type oil agent is applied to the tow-shaped fiber bundle before cutting. given. In addition to this, there is also a method J) in which an oil agent is applied to the raw cotton after cutting by a jetting method.

In addition, as components other than the main component, higher alcohol or alkali metal salt of phosphoric acid ester of polyoxyalkylene alkyl ether, various conventional oil components having suitable properties can be used. Specifically, the first component is a smoothing agent such as mineral oil or ester oil, and the second component is an emulsifier such as a nonionic surfactant (9 examples), a higher alcohol or a higher fatty acid, etc. ingredients, as well as ionic surfactants such as monkey alkali metal salts.

Polymer imidin dublin and the like are selected as the third component, and these are mixed and used as appropriate.

The alkali metal salt of phosphoric acid ester used as the main component in the present invention is octyjlnophos-1
Salt to ~, salt to lauryl phospade, myristylbos・＼
- Salt to cetylphospade, salt to stearylbospade, etc., and ethylene oxide to higher alcohol.
Salts or Na salts of esters of polymequin alkylene alkyl ether and phosphoric acid to which 1 to 2 moles of alkylene oxide such as propylene oxide have been added are exemplified.

In general, in alkali metal salts of esters of higher alcohols and phosphoric acid, Zunawaji, and alkali metal salts of alkyl phosphate esters, the smaller the number of carbon atoms in the alkyl group, the higher the hygroscopicity; The hygroscopicity of the alkali metal salt of esral phosphate increases as the number of moles of alkylene oxy-1- added increases. Among the reactants of this compound, there are phosphoric acid monoesters, diesters, and triesters, and the higher the ratio of phosphoric acid monoesters, the higher the hygroscopicity.

The water absorption rate in the present invention has a correlation with dyeing spots, and the 11゛b area where the water absorption rate is 10% or more is the range where dyeing spots do not occur, and conversely, the water absorption rate is 1 ( )%
If it is less than that, it will be an area where staining spots will occur.

The raw cotton coated with a spinning oil containing a sticky component will cause the fibers to be rolled up in the carding process during the spinning process. There is no need to guess that it is preferable to use an oil with a less sticky component as the spinning oil, as this may cause problems such as rubber sticking during the threading process.

However, if a composition with low stickiness is selected, the water absorption rate will be very low. In experiments conducted by the inventors, 1
When the spinning oil of the present invention is used, results have been obtained in which there is no problem with spinnability even when tackiness is caused.

This adhesiveness can be evaluated by the adhesive peeling force measured by the method described below. In the present invention, results were obtained in which a spinning oil having an adhesive peeling force of 150 g or less results in a product that has almost no effect on spinnability. On the other hand, if it exceeds 150g, troubles will occur such as the fibers sticking to the roller.

In order to improve spinnability and prevent dyeing spots, which are the objectives of the present invention, it is necessary to satisfy two contradictory properties at the same time, and it is also necessary to add a component that has a sufficient ability to suppress conventional static electricity.

Therefore, rather than achieving each effect with 11λ components.

Fraud is when multiple ingredients are combined to produce a combined effect.

Next, a force method for measuring water absorption and adhesive peeling force according to the present invention will be explained.

0 Water absorption rate (%) The sample oil was dehydrated under reduced pressure using a vacuum pump under lightning temperature for two days and nights.
Remove moisture. Approximately 1 g of this was accurately weighed in a 50 mm diameter petri dish, and the sample was left to reach an equilibrium moisture state by exposing it for about 2 days and nights at 20° C. and 165% RH. Thereafter, the sample is weighed and the weight of water absorbed is expressed as a percentage based on the change in weight before and after.

0 Adhesive peeling force (g) Prepare a metal cylindrical weight (10 g) with a cross-sectional area of 0.28 cnl and a flat bottom surface with a 1-J mm diameter by attaching a string to the two ends and connecting a spring scale. .

Next, the bottom surfaces of two cylindrical weights are strongly pressed against the sample while the sample that has reached equilibrium moisture remains in the Petri dish. Then, when the spring scale is pulled up, a force is applied to the spring scale and the cylindrical weight is lifted off the sample, so the difference in weight between the force and the weight at that moment is expressed in g. The larger this force is, the higher the adhesive peeling force is, and it can be said that the sample is sticky.

Examples will be given below and explained in detail.

In addition, the charging voltage (V) and relative viscosity (ηr
The method for measuring el) is as follows.

0 Electrostatic voltage (V) The electrostatic electrostatic voltage (V) of the web generated during the spinning process (25°C 170% R1 ()) is calculated using the Kasuga style collection (i
? Measured using a 1i position measuring device.

0 relative viscosity (ηrel) 96% sulfuric acid] (1 g of sample was dissolved in IOcc and measured at 25°C.

For four types of spinning oils A-D (inventive examples) and four types of oils E-H (comparative examples) having the oil compositions shown in Example Table 1, water absorption rate (%) and adhesive peeling force (g ) was first measured by the method described above.

Next, undrawn nylon 6 yarn with a relative viscosity of 3.3 was drawn at a stretching ratio of 3.
．． Stretched 5 times at a stretching speed of 130 m/min, the first
Apply 0.5% by weight of an aqueous emulsion of each oil composition shown in the table to the tow bundle using the 11-La method, apply 0.15% (1) per car weight to the tow bundle, and dry in a hot air dryer. °C1
After drying for 10 minutes, a total denier of 200,000 d was obtained. Next, the tow was rolled up and canted to 1.5d x 47mm using a second cutter (manufactured by Teijin Seiki Co., Ltd.).
Pour it onto a card to make a sliver. The sliver was subjected to filament and spinning steps to obtain a 22-count spun yarn. The spinning performance in each process, that is, cart 1', degree (25°C 170%
The charging voltage and fall of the web at R11> and the tension of the yarn in the filament process were evaluated as i/V.

In addition, regarding dyeing irregularities, after making moquette fabric from each of the above-mentioned spun yarns with good quality during the spinning process, 0.3% acid dye (Te1on Blue BNL, manufactured by Bayer AG) was added.
It was made into a liquid. Cloth speed 3 m/mid in dye bath at 105°C
The evaluation was carried out by staining using a continuous staining method in which the sample was passed for about 15 seconds. Table 1 shows the results of each performance obtained.

Table 1 atI value determination 〇 - No problems at all △ - Some problems, but usable × - Unusable due to troubles The spinning oil composition of the present invention, which has a small adhesive peeling force and a water absorption rate of 10% or more, has excellent spinning properties, It can be seen that it is excellent in staining and staining spots.

In addition, H cited the example of Japanese Patent Publication No. 52-31999 as a comparison with the present invention.

Patent applicant: Unitika Co., Ltd.

Claims (1)

[Claims] (1) An oil agent whose main component is an alkali metal salt of an ester of a higher alcohol or its alkylene oxide adduct and phosphoric acid, and has a water absorption rate of 10% by weight or more,
A spinning oil agent for synthetic fibers, characterized in that the adhesive peeling force is 150 g or less.