JPS6297976A - Oil agent for treating 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 [Industrial Application Field] The present invention relates to an oil for treating synthetic fibers, and particularly to an oil for treating synthetic fibers that undergoes a heating process.

[Prior Art and Problems] Conventionally, when producing synthetic fibers, yarns spun by a melt-spinning method are heated to draw them or heat-set to improve their properties. In addition, thermoplastic synthetic fibers that undergo a false twisting process are generally heat treated to fix their shape, and synthetic fibers used for industrial materials such as tire cord yarns are It is customary to draw under severe heating conditions to obtain strength yarns. In various manufacturing processes, fiber threads are often processed at fairly high speeds, and a high degree of Heat resistance, smoothness, and antistatic properties are required. In order to satisfy these demands, lubricant components that are mixed with emulsifiers, antistatic agents, etc. have traditionally been esters of mineral oils, higher alcohols, and fatty acids, and tribasic acids such as adipic acid and sebacic acid. Esters, fatty acid esters of polyhydric alcohols such as trimethylolpropene and glycerin have been used. However, although these conventionally used lubricating agents exhibit good smoothness, they are not heat resistant for synthetic fiber yarns that undergo particularly harsh heating processes such as hot drawing and false twisting processes. This may cause smoke to worsen the working environment, and tar-like substances may form on the heater, resulting in noticeable staining of the yarn path and single yarn wrapping or yarn breakage. As a result, smooth stretching and false twisting cannot be performed, and the machine must be stopped and cleaned to remove tar-like substances, causing process troubles and reducing efficiency.

The present inventors have already developed a compound with excellent thermal stability as a composition for lubricating synthetic fibers that undergoes a heating process, which improves these drawbacks, and discloses the same in Japanese Patent Publication No. 47-29474,
It is disclosed in Japanese Patent Application Laid-Open No. 51-70397. The lubricating component used in the composition of the invention is a diester obtained by adding alkylene oxide to bisphenol A and esterifying it with a higher fatty acid, and is a diester obtained by adding alkylene oxide to bisphenol A and esterifying it with a higher fatty acid.
) and general formula (4).

CH3 (31 -0(CHzCHzO)q COR4 C.I.

■ 10(CII2CHO), COR4 (In the formula, R: 1., R4 is a saturated semi-unsaturated hydrocarbon group having 8 to 22 carbon atoms, p and q are 1 or more, and the total is 5
It is less than or equal to 0. ) These compounds have excellent thermal stability;
We succeeded in improving the above drawbacks. However, with the recent speeding up of textile manufacturing processes, environmental conservation (
For example, there is an increasing demand to strengthen the problem of air volition caused by smoke generation, and it has become necessary to further improve heat resistance.

[Means for Solving the Problems] Therefore, in view of the above situation, the present inventors conducted repeated studies to suppress the generation of smoke and tar-like substances during the heating process, and as a result, the following general formula (1) was developed. An oil agent for treating synthetic fibers, which is characterized by containing an ester obtained by reacting the compound represented by the formula (2) with the compound represented by the general formula (2), generates virtually no smoke and does not generate tar substances. The present invention was achieved by discovering that this does not occur.

RIS (CHz) t C0OH(1) (where R,
represents an alkyl group or alkenyl group having 6 to 3 carbon atoms; 1. represents an integer from 1 to 3. ) CH3 CI.

(In the formula, AO represents an alkylene oxide group in which A is an alkylene group having 2 to 4 carbon atoms, and m and n are O or 1 to
3o integers whose sum is 50 or less. ) The alkyl group or alkenyl group represented by RI of the compound represented by the general formula (11) has 6 to 30 carbon atoms.

Specifically, hexyl group, isohexyl group, heptyl group,
Octyl group, isooctyl group, 2-ethylhexyl group,
Examples include decyl group, lauryl group, myristyl group, cetyl group, stearyl group, isostearyl group, eicosyl group, isoeicosyl group, oleyl group, lycylin group, and various mixed alkyl groups or mixed alkenyl groups.

The compound represented by the general formula (2) is obtained by adding an alkylene oxide having 2 to 4 carbon atoms to bisphenol A, and the total number of moles added is 50 or less. If it exceeds 50, the heat resistance decreases and the effects of the present invention cannot be fully exhibited, which is not preferable. The carbon number here is 2
Examples of the alkylene oxides in ~4 include ethylene oxide, propylene oxide, butylene oxide, etc. When adding, these can be used alone or in combination.

The esterification reaction of the compound represented by the general formula (1) and the compound represented by the general formula (2) is carried out by a known method, for example, by heating and dehydration in the presence of an acid or alkali catalyst. It is preferable to completely esterify both hydroxyl groups from the viewpoint of lubricity.

Further, some conventional fatty acids may be mixed in place of the compound represented by the general formula (1).

In addition to the compounds of the present invention, the synthetic fiber processing oil used in the present invention may optionally contain known lubricants (for example, aliphatic monoesters such as lauryl oleate and isotridecyl stearate, dioleyl adipate and dioctyl phthalate). emulsifiers such as dibasic acid diesters such as dibasic acid diesters, polyhydric alcohol esters such as trimethylolethane trilaurate and glycerin triolate), polyoxyethylene sorbitan esters, ethylene oxide adducts of hydrogenated castor oil, and alkyl phosphate potassium salts. , potassium oleate, imidacillin-type amphoteric surfactants, betaine-type amphoteric surfactants, etc. can be blended and used as antistatic agents.

Thus, the synthetic fiber treatment oil agent of the present invention can be emulsified in water to form an aqueous emulsion by a conventional method, or dissolved in a low-viscosity diluent solvent, and then applied to fiber yarns using an oiling roller, spray method, etc. 0.2 to 2.0% by weight
Refueled.

The synthetic fibers treated with the synthetic fiber treatment oil of the present invention are
It exhibits excellent heat resistance, and does not emit smoke on a heater plate heated to 160 to 250°C, deteriorating the working environment, or generate tar-like substances on the heater, reducing work efficiency. do not have.

[Examples] Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Table 2 shows the results of a comparative study of the heat resistance of the compounds A, B, and C of the present invention listed in Table 1 and conventionally used known lubricant components. From Table 2, it can be seen that the compounds of the present invention exhibit very excellent heat resistance and rarely emit smoke or form tar-like substances.

Incidentally, the tar conversion rate and the amount of smoke generation were measured as follows, and the smaller the numbers, the better the results. Note that the light attenuation rate is 0 when no smoke is emitted.

Amount of smoke emitted: Place the sample into a metal container. The smoke emitted from the sample when heated to 250° C. with Ig was introduced into a spectrometer, and the value obtained by integrating the light attenuation rate over 5 minutes was defined as the amount of smoke emitted. The light attenuation rate is 0 when no smoke is emitted.

Method for measuring tar rate: Approximately 0.5 g of a sample is collected in a commercially available aluminum dish, placed in a hot air dryer, heated at 250°C for 4 hours, and then taken out. After cooling to room temperature, wash the aluminum dish with acetone. Generally, the remaining sample that does not dissolve in acetone is a black resinous substance, and the larger the amount, the higher the rate of taring.

The tar rate was calculated as follows.

× 100

Claims (1)

[Claims] 1 A compound represented by the following general formula (1) and a compound represented by the general formula (2)
) Synthetic fiber processing oil R_1S(CH_2)_ιCOOH(1) (wherein R_1 is an alkyl group having 6 to 30 carbon atoms, alkenyl group, and ι represents an integer from 1 to 3.) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(2) (In the formula, AO represents an alkylene oxide group in which A is an alkylene group having 2 to 4 carbon atoms. where m and n are 0 or 1 to
It is an integer of 30 and the sum is 50 or less. )