JPH03227455A - Treating agent for tow spinning of polyester - Google Patents

Abstract

PURPOSE:To obtain the subject treating agent capable of suppressing entanglement of tows, collection breakage in stretch-breaking thereof or wrapping around rollers by blending a specific potassium alkyl phosphate with a wax, dimethylpolysiloxane and a cationic surfactant at a specific weight ratio. CONSTITUTION:A treating agent for polyester tow spinning obtained by blending (A) a potassium 12-20C alkyl phosphate, preferably potassium stearyl phosphate with (B) a wax, (C) dimethylpolysiloxane preferably having >=30000cSt viscosity at 25 deg.C and (D) a cationic surfactant at (55-80)/(5-20)/(5-20)/(5-20) weight ratio of A/B/C/D. The pickup of the aforementioned treating agent is preferably within the range of 0.07-0.20wt.%, especially 0.10-0.15wt.% expressed in terms of the total solid content based on a tow.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to a processing agent for polyester tow spinning, and in particular, it is applied to the tow in advance during tow spinning such as parlock spinning and converter spinning to improve the tow supply. The present invention relates to a processing agent that does not cause tow to become tangled during cutting and can suppress focused cutting, roller wrapping, etc. that occur during cutting.

(Prior Art) As spinning oil agents for synthetic fibers that impart smoothness and antistatic properties to short M fibers of synthetic fibers used in the normal spinning process, metal salts of alkyl phosphate esters, metal salts of aliphatic carboxylic acids, Aliphatic carboxylic acid esters, higher alcohols, and their ethylene oxide adducts are widely known.

(Problem to be solved by the invention) However, there is parlock spinning, in which synthetic fiber tow is cut as is to obtain a sliver, and the roving and spinning processes are carried out to obtain a light spun yarn. In tow spinning, such as converter spinning, in which a sliver is obtained and spun yarn is obtained through the roving and chaff spinning processes, tangles due to looseness of the tow that occur when the packed tow is taken up and fed to the cutting machine. Various problems have occurred, such as focused cutting that occurs during tow cutting, roller wrapping due to static electricity generation, and falling off of processing oil, and no method has been found to solve all of these problems.

(Means for Solving the Problems) In order to solve the various problems mentioned above, obtain a homogeneous sliver, and eventually obtain a homogeneous spun yarn, the inventors of the present invention have conducted various studies and found that the composition described below is as follows. It was found that the treatment agent was effective.

That is, in the present invention, alkyl phosphate potash having 12 to 20 carbon atoms (A), wax (B), dimethylpolysiloxane (C), and cationic surfactant (I)) (A)
/ CB) / (C) / (D) = 55~8
A processing agent for polyester tow spinning which is blended in a weight ratio of 015-2015-2015-20, and by applying this to tow, a tow with good formability that is free from tangles due to looseness when taken up. In addition, it is possible to obtain a homogeneous scooper with less focused cutting during sharp cutting, less roller wrapping due to static electricity generation, and less falling off of the processing agent. Furthermore, the process of obtaining spun yarn through roving and spinning in the subsequent steps is such that good quality spun yarn can be obtained without any problems.

In the present invention, the (A) component, potassium flukylphos 7-acetate having 12 to 20 carbon atoms, is important in suppressing flakiness of tow and preventing the treatment agent from falling off at the time of cutting and during the subsequent steps of roving and spinning. However, if the number of carbon atoms is outside the above range, these effects will not be fully exerted. Most preferred is potash stearyl phosphate.

The wax that is component (B) of the present invention is phosphate-based, halaffin-based, ester-based, or ether-based.

Although there is no particular limitation on the amide type, it is preferable that the melting point is 80° C. or higher. If the melting point is less than 80°C, the processing agent tends to fall off more often to the rollers due to the temperature increase during cutting, and there is also a tendency for more curling. As component (C) dimethylpolysiloxane, conventionally known dimethylpolysiloxanes can be used regardless of whether or not they have been modified with amino or epoxy, but those having a viscosity of 30,000 centistres or more at 25°C are preferred. When the viscosity is less than 30,000 centistocs, the processing agent tends to fall off more often to the rollers, and there is a tendency for the treatment agent to become more likely to get wound up.

Component (C) also plays an important role in suppressing wrapping around rollers.

In preparing the processing agent of the present invention, it is difficult to disperse the components (B) and (C) as they are, so it is usually preferable to handle them as an emulsion dispersed in a nonionic surfactant.

As the cationic surfactant of component CD), commonly used quaternary ammonium salt type cationic compounds and amine salt type cationic surfactants can be used. this(
Component D) plays an important role in imparting electrical protection, and preferably an alkylammonium phosphate compound is used.

In the treatment agent of the present invention, the above components (A) to (D) are blended in a weight ratio of (A) / (B) l (C) / (D) in a ratio of 55 to 8015 to 2015 to 2015 to 20. It is important that the

Component (A) is suitably in the range of 55 to 80 weight by weight; if it is less than 55 weight, the tow will be extremely flaky and the treatment agent will often fall off during the cutting process and in the subsequent steps of roving and spinning, which is undesirable. On the other hand, if it exceeds 80%, the friction between the fibers becomes high no matter how the combination of the remaining components (BXCXD) is used, and a tow with good splitting properties and antistatic properties cannot be obtained.

The blending ratio of components (B), (C), and (D) may be any ratio as long as it is within the above range, but for example, if either (B) or (C) is too small, Although this is good, it is unfavorable because it increases the amount of winding around the Kenkiri-like row 2-. On the other hand, if there is too much, the kite may be damaged.
This is not preferable as the processing agent often falls off onto rollers, etc.

(D) If the amount of component is too small, the friction between fibers will increase,
On the other hand, if the amount is too high, the separation property will be poor and the treatment agent will fall off, resulting in more winding around the roller.

The processing agent of the present invention is applied to tow in advance for tow spinning such as parlock spinning and co/barter spinning.
When picking up packed tow and feeding the tow in a cutting process, the tangles caused by the looseness of the tow, the focused cutting that occurs when cutting the tow, and the roller wrapping caused by static electricity generation are suppressed.
Although the treatment agent itself is less likely to fall off, it is most suitable for polyester tow as a tow to which the treatment agent is applied.

The treatment agent of the present invention may be applied by any known method, and a water-soluble emulsion may be applied to the tow by a dipping method, an oiling roller method, a spray method, or the like. The amount of total solid content attached to the tow is preferably 0.07 to 0.20% by weight, particularly preferably 0.10 to 0.15% by weight.

<Example> Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto.0 Examples 1 to 3, Comparative Examples 1 to 4 700,000 denier made of polyester fiber (Single yarn 4.0
1.5 of the treatment agent with the composition shown in Table 1 on the tow (denier).
A wt % water-soluble emulsion was applied by dipping to obtain a tow with a solid content coverage of 0.12 wt. This tow was cut using a Purlock-type sliver to obtain a sliver, and then subjected to a filament and spinning process to obtain each cage-spun yarn of number 10.

In producing these spun yarns, we take into account the following: tow entanglement, tearing properties, roller winding, and sliver Uts when taking up the tow.
Also, the shedding of the oil agent during spinning and the stiffness of the spun yarn were evaluated. The results are shown in Table-2.

As is clear from Table 2, the tow coated with the treatment agent of the present invention has good tangle and tearing properties when the tow is picked up.
On the other hand, as seen in the comparative examples, if the processing agent of the present invention lacks even one of the requirements (Comparative Examples 1 to 3), the tow Although there was little tangle, the sliver and spun yarn were both prone to bunch cutting and roller wrapping during cutting, and both the sliver and spun yarn had large irregularities. In addition, when a treatment agent adjusted to eliminate unevenness was used (Comparative Example 4), relatively good sliver and spun yarn were obtained, but tangles frequently occurred when the tow was picked up, and the treatment agent fell off. were also seen a lot.

Note in the margin table below) SPK, stearyl phosphate potash LPK, lauryl phosphate potash LTAP; lauryl trimechelone 7; Not ^^
shows. In addition, the sliver U% and spun yarn Ult were measured using a capacitive U% measuring device manufactured by Keizoku Kogyo Co., Ltd.

<Effects of the Invention> During tow spinning, especially when spinning polyester tow, by attaching the treatment agent of the present invention to the tow, it is possible to eliminate the problems of entanglement when picking up the tow and when cutting the tow, which were problems in conventional tow spinning. The sliver and spun yarn can be suppressed from bunch cutting and roller winding, and have less unevenness in both the sliver and spun yarn.

Claims (1)

[Claims] (1) Potassium alkyl phosphate having 12 to 20 carbon atoms (
A), wax (B), dimethylpolysiloxane (C)
and the cationic surfactant (D) is (A)/(B)/(
C)/(D)=55~80/5~20/5~20/5~
A processing agent for polyester tow spinning which is blended at a weight ratio of 20%.