JPS6037222B2 - Non-hydrous fiber treatment agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water-free fiber treatment agent, in particular, a method for continuously stretching synthetic fibers without winding them after spinning them.
The present invention relates to a water-free fiber treatment agent used to supply oil to undrawn yarn after spinning in a so-called straight spinning/drawing process.

Compared to a spinning method that separately performs a continuous yarn process of winding a synthetic fiber spun yarn and a drawing process of stretching the wound undrawn yarn,
The direct paper yarn drawing method has fewer steps and has good operability.
It has become widely adopted in recent years.

On the other hand, when synthetic fibers are graded, it is essential to oil the graded undrawn yarn with a fiber treatment agent, and in the case of polyamide fibers in particular, an aqueous emulsion type treatment agent has been used to facilitate cold drawing. In the direct spinning/drawing method, when an aqueous emulsion is used, the crystal orientation of the fibers becomes non-uniform, which causes uneven dyeing and other problems with yarn quality, so a non-hydrous oil is generally used. Furthermore, in the direct spinning/drawing method, heat stretching and heat setting are performed in order to prevent damage to the package due to internal stress of the fibers, so the oil agent is required to have heat resistance. Furthermore, in the direct spinning/drawing method, since the yarn usually advances at a speed of 2500 m/min or more, the oil-modified substances accumulate heavily in the heat treatment step, and tar-like substances accumulate in a short period of time. If you leave this, fluff,
Since thread breakage occurs frequently, which poses problems in terms of quality and operation, an oil agent that is particularly resistant to tarring is required. Various non-water-containing fiber treatment agents have been known, but currently no fiber treatment agent has been found that has excellent heat resistance and tar formation resistance, is easy to handle, and has a high viscosity. .

The present invention meets the above-mentioned needs and provides a fiber treatment agent that has excellent heat resistance, tarring resistance, and low viscosity.

That is, the present invention provides a non-water-containing compound containing at least an alkylene oxide adduct of a higher alcohol represented by the following general formula and a mineral oil having a viscosity of p or less, and the viscosity of the entire formulation is 1 ratio p or less. It is a fiber treatment agent.

R-(OC2 days 4)m-(OC3 days 6)n-days (wherein, R is an alkyl group having 8 to 22 carbon atoms, m is an integer of 1 to 5, and n is 0 or an integer of 1 to 5. .

) The fiber treatment agent of the present invention is a mixture whose main components are an alkylene oxide adduct of a higher alcohol and mineral oil, and the alkylene oxide adduct of a higher alcohol is a compound represented by the following general formula.

R-(OC2 days 4)m(OC3 days 6)n-days where R is a C8-C2 alkyl group, that is, a residue of a higher alcohol, preferably C,o-C,8, more preferably C,
2~C. 5 is an alkyl group. Also, the alkyl group is 2
Those containing no heavy bonds, ie, residues of synthetic alcohols, are preferred. The value of m, which represents an ethylene oxide unit, is an integer from 1 to 5, but since the number of moles of ethylene oxide added in the above formula compound actually used is shown as an average value, the value of m is a number with a decimal. It's normal.

The value of n, which represents a propylene oxide unit, is 0 or 1 to 5.
is an integer of 1 to 5, preferably 1 to 5. Of course, in this case as well, it is an integer in terms of one molecule of the compound, but since there is a distribution in the number of moles of propylene oxide added to the compound actually used, it is usually not an integer. Also, m and n
The ratio of m/n, that is, the value of m/n, affects the properties of the fiber treatment agent;
As m/n increases, the friction coefficient of the treated fibers decreases, but the taring resistance decreases, and as m/n decreases, the tarring resistance improves, but the water twilling properties worsen, so it is recommended to set this as an appropriate range. is m/n=0.5-2.0, preferably 1-1
．． It is 7. On the other hand, the viscosity of the mineral oil to be mixed must be below $p; if one with a viscosity higher than this is used, the viscosity of the mixture will increase, resulting in poor adhesion to the yarn, resulting in yarn wobbling, chattering, etc. It occurs and is not desirable.

The only way to lower the viscosity of the blend is to increase the blending ratio of mineral oil, but if this is done, the ratio of the alkylene oxide adduct of the higher alcohol decreases, and the treatment effect becomes smaller. The amount of higher alcohol alkylene oxide adduct included in the fiber treatment agent of the present invention is preferably about 10-30%, but the viscosity of the total formulation must be less than 1 ratio p.

All formulations essentially contain mineral oil and higher alcohol alkylene oxide adducts, and may also contain fatty acid esters as smoothing agents, polyethylene glycol esters as emulsifiers, phosphates as antistatic agents, and the like. The fiber treatment agent of the present invention is applied to the oiling of polyamide and polyester synthetic fibers, and is particularly suitable for application to the process of straight-spinning and drawing methods for polyamide fibers.

The present invention will be specifically described below with reference to Examples.

In this example, the viscosity, heat loss, oil supply condition, and operability were determined as follows.

Absolute viscosity at 3000 was read from the scale using a BL type rotational viscometer.

Five samples of heat loss were placed in a glass weighing bottle with a diameter of 6 mm and a depth of 4 mm, heated in a dryer kept at 16,030 ℃, cooled and weighed, and the weight loss rate was expressed in %.

The wobbling of the yarn on the oiling roller was observed and determined as follows.

○: Almost no yarn wobbling is observed.

△: Thread shaking is observed.

×: Thread swing is severe and thread breakage occurs in a short period of time.

Operability Continuous operation was performed for 10 days, and the yarn breakage rate was determined as follows.

◎: Less than 0.15 times/day, base ○: 0.16-0.29 times/day, base △: 0.26-0.35 times/day, base x: 0.3 home country/day, base or more Example 1 PoIJ capramide with r2.55 was fed to a normal melt splicing machine and melt-grade threaded at 265°C. Various oils were applied to the spun yarn using an oil roller, and Nada melon h/ The yarn was taken up at a take-up speed of min, and then the yarn was drawn 3.2 times between a heated drawing roller whose surface temperature was 160°C and which was rotating at a circumferential speed faster than that of this take-up roller. Thereafter, it was wound up in a winder to obtain a drawn yarn of 7 plates (241 L).

The results at this time are summarized in Table-1. Oil Composition Mineral oil (viscosity 2. ratio p): 6 parts Alkylene oxide adduct of higher alcohol: 35 parts 3 mole ethylene oxide adduct of oleyl phosphate: 5 parts Table 1 From the results in Table 1, the viscosity and It can be seen that when the alkylene oxide adduct of higher alcohol is within the range of the present invention, both the oil supply condition and the operability are good.

Example 2 Experiment No. 1 of Example 1 except that the type of mineral oil was changed. The same operation as in 3 was performed to obtain the results shown in Table 2.

Table 2 Example 3 Experiment No. 1 of Example 1 except that the composition of the oil agent was changed. The same operation as in 5 was performed, and the results shown in Table 3 were obtained.

Claims (1)

[Scope of Claims] 1. A water-free fiber treatment containing at least an alkylene oxide adduct of a higher alcohol represented by the following general formula and a mineral oil having a viscosity of 3 cp or less, and the viscosity of the entire blend being 10 cp or less agent. R-(OC_2H_4)_m(OC_3H_6)_n-
H (wherein R is an alkyl group having 8 to 22 carbon atoms, m is an integer of 1 to 5, and n is 0 or an integer of 1 to 5).