JP2003147675A - Treatment agent for elastic fiber and elastic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a treatment agent for elastic fibers that can improve the loosening and antistatic properties of the elastic fibers. SOLUTION: The treatment agent contains at least one selected from the group consisting of silicone oil, mineral oil and ester oil as a base, water, at least one selected from 1-15C lower alcohols and addncts of lower alcohols to alkylene oxides (1-15 moles) in an amount of 0.1-20 wt.% and an emulsifier in an amount of 0.1-10 wt.%. The elastic fiber is treated with 0.1-15 wt.% of the treatment agent. Relating to this invention, the use of a low molecular weight compound bearing active hydrogen atoms has been found to improve the fiber loosening and antistatic properties of the elastic fibers.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a treatment agent for elastic fibers which is excellent in antistatic property and unwinding property.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 46-16312 discloses a treatment agent for elastic fibers, which comprises a mineral oil containing a primary amine. JP-A-7-157969 describes an oil agent for elastic fibers containing an EO adduct of a water-soluble polyhydric alcohol. Japanese Patent Publication No. 51-37998 discloses that
An oil agent for elastic fibers to which a higher alcohol is added is described.

[0003]

The treatment agent for elastic fibers is
Since hydrophobic base oils such as silicone oil, mineral oil and ester oil are used, it is impossible to dissolve a large amount of strongly polar components in order to impart antistatic property.
Only a small amount of antistatic agent is used to impart some antistatic property. Further, the unwinding property is currently improved by dispersing a high molecular weight highly polar component, a metal soap or the like.

[0004]

The present invention uses, as a base component, at least one selected from silicone oils, mineral oils and ester oils, and has water and a low-grade hydrocarbon group having 1 to 15 carbon atoms. 0.1 to 20% by weight of at least one selected from alcohols and alkylenelenoxide (1 to 5 mol) adducts of the lower alcohols
It is a processing agent for elastic fibers which contains 0.1 to 10% by weight of an emulsifier. Further, in the present invention, the above treatment agent is 0.1 to
The elastic fiber is characterized by being provided at 15% by weight.

In the present invention, the base component is selected from ester oil, mineral oil and silicone oil, and it is necessary to use at least one kind. The treatment agent of the present invention preferably has a viscosity at 30 ° C. of 3 to 30 mm ² / s. 3 mm ² / s
If less than 30 mm ² / s
If it exceeds, the smoothness is poor. In the present invention, water, carbon number 1 to
0.1 to 20 of at least one selected from lower alcohols having 15 hydrocarbon groups and alkyleneylene oxide (1 to 5 mol) adducts of the lower alcohols.
Must be contained by weight percent. It is preferably 0.5 to 10% by weight. The hydrocarbon group of the lower alcohol has 1 carbon atom
-10 is preferable. The present invention deactivates the isocyanate on the elastic fiber surface by controlling the amounts of water, lower alcohol and its modified product, and
It has been found that the unwinding property of cheese is improved with almost no decrease in elongation and that the antistatic property is improved by adding a component having a strong polarity to the treatment agent.
Specific examples of water, a lower alcohol having a hydrocarbon group having 1 to 15 carbon atoms and an alkyleneylene oxide adduct of the lower alcohol used in the present invention include ion-exchanged water, soft water, hard water, methanol, ethanol, isopropanol, Butanol, hexanol, octanol, lauryl alcohol, phenol, ethylene oxide 2 mol adduct of methanol, butanol ethylene oxide 4 mol adduct, propylene oxide 3 mol adduct, lauryl alcohol butylene oxide 2 mol adduct and the like. To be Among them, the molecular weight is 1
A compound having a low molecular weight of 00 or less is preferable because the number of moles of active hydrogen increases per weight.

In the present invention, the emulsifier is contained in an amount of 0.1 to 30% by weight.
contains. As the emulsifier, various conventionally known surfactants are used. The amount of emulsifier added is preferably 0.5-
It is 15% by weight. Specific examples of the emulsifier include EO adduct of alkylphenol, POE alkylamino ether, POE alkylamide ether, POE alkyl ester ether, POE dialkyl ester, glycerin monoester, glycerin triester amino modified silicone, polyether modified silicone, phosphoric acid. Modified silicone, sorbitan monoester, sorbitan triester, PO / EO block diol alkane sulfonate salt, alkylbenzene sulfonate salt, dialkyl sulfosuccinate salt, alkyl sulfate salt, alkyl phosphate salt, POE alkyl ether phosphate salt, quaternary ammonium salt, 4 Examples include phosphonium salts and the like.

Further, in the treatment agent of the present invention, in order to enhance the smoothness and antistatic effect, metal soap of higher fatty acid is added in an amount of 0.
01 to 5 parts by weight may be added. As the metal soap of higher fatty acid, known soaps used for conventional elastic fibers can be used, and Ca stearate, Mg stearate, Al stearate, Ba stearate, zinc stearate and the like are preferable. Further, the treatment agent of the present invention includes conventionally known modified silicone (alkyl modified silicone, ester modified silicone, carbinol modified silicone, carboxy modified silicone, mercapto modified silicone, epoxy modified silicone, MQ silicone resin, MQT silicone resin, T Silicone resin, D
T silicone resin, etc.), a binder, an antistatic agent, an antioxidant, an ultraviolet absorber, and the like, which are usually used as a treating agent for elastic fibers, may be added.

The treatment agent of the present invention is usually applied in an amount of 0.1 to 15% by weight based on the elastic fiber.

[0010]

The present invention will be described in detail with reference to the following examples. The evaluation of each characteristic in specific examples was performed according to the following methods.

[Evaluation method of action and effect of oil agent] Unwinding speed ratio: In Fig. 1, the cheese (1) of the fiber to which the treating agent is added is set on the unwinding side of the unwinding speed ratio measuring machine, and the winding side paper tube ( 2) Set. After setting the winding speed to a constant speed, the rollers (3) and (4) are simultaneously activated. In this state, the yarn (5) has almost no tension, and the yarn sticks on the cheese and does not separate, so the unwinding point (6) is in the state shown in FIG. By changing the unwinding speed, the unwinding point (6) of the thread (5) from the cheese changes, so the unwinding speed is set so that this point coincides with the contact point (7) between the cheese and the roller. The unwinding speed ratio is calculated by Equation 1. The smaller this value is, the better the unwinding property is.

[Formula 1] Unwinding speed ratio (%) = (Winding speed-Unwinding speed)
/ Unwinding speed X 100 Knitting tension: In FIG. 2, elastic yarn (9) longitudinally taken from cheese (8) passes through compensator (10), roller (11), knitting needle (12), and U gauge ( 1
3) via the roller (14) attached to the speedometer (15),
Connect to take-up roller (16). Speedometer (15)
Driving speed is constant (eg 10m / min, 100m /
Adjust the rotation speed of the take-up roller so that it will be equal to 1 minute), take up the take-up roller, measure the knitting tension at that time with a U gauge (13), and measure the friction (g) between the fiber and the knitting needle. To do. The static electricity generated is measured with a Kasuga type potentiometer (17) at a distance of 1 cm from the running yarn. Roller static electricity: Set cheese on the unwinding side of the unwinding speed ratio measuring machine, rotate it at a peripheral speed of 50 m / min, and put it on the cheese 2c
At m, a Kasuga type potentiometer is used to measure the static electricity generated one hour after starting rotation. Strength elongation: measured according to JIS L 1013. Preparation of spinning dope: Polytetramethylene ether glycol having a number average molecular weight of 1600 and 4,4'-diphenylmethane diisocyanate were reacted at a molar ratio of 1: 2, and then chain-extended using a dimethylformamide solution of 1,2-diaminopropane. A dimethylformamide solution having a polymer concentration of 33% was obtained. Concentration at 30 ℃ is 1800mP
was aS.

Examples 1 to 6 The polyurethane spinning dope was discharged into a N ₂ stream at 185 ° C. for dry spinning. After applying the treating agent shown in Table 1 (the compounding amount in the table is parts by weight) to the running yarn during spinning by 6% by weight with respect to the fiber by an euling roller, the yarn was wound on a bobbin at a speed of 400 m / min and 77 dtex monofilament cheese. (A winding amount of 400 g) was obtained. The obtained cheese is 35
The sample was left for 48 hours in an atmosphere of 50 ° C and 50% RH for evaluation.

[0012]

[Table 1]

Examples 7 to 11 and Comparative Examples 1 to 3 Preparation of spinning dope 100 parts by weight of polytetramethylene glycol having a number average molecular weight of 2000 and 25 parts by weight of 4,4'-diphenylmethane diisocyanate were reacted at 80 ° C. to give N, 250 parts by weight of N'-dimethylacetamide was added and the reaction mixture was dissolved while cooling. A solution prepared by dissolving 5 parts by weight of 1,2-diaminopropane in 184 parts by weight of N, N′-dimethylacetamide was added, and dimethyl silicone 100 mm
0.2% by weight of ² / s was added. The polyurethane spinning dope thus obtained was discharged from a spinneret having four pores into a N ₂ stream at 185 ° C. for dry spinning. After 6 wt% of the treating agent shown in Table 2 was applied to the running yarn during spinning with an oiling roller, it was wound on a bobbin at a speed of 400 m / min to obtain 44 dtex multifilament cheese (amount of winding 400 g). It was The obtained cheese was left for 48 hours in an atmosphere of 35 ° C. and 50% RH for evaluation.

[0014]

[Table 2]

[0015]

EFFECTS OF THE INVENTION By using the treating agent of the present invention, it is possible to provide the elastic fiber with stable unwinding property and antistatic property.

[0016]

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating a method for measuring an unwinding speed ratio.

FIG. 2 is a schematic diagram illustrating a method for measuring knitting tension.

[Explanation of symbols]

1 cheese 2 Winding paper tube 3 rollers 4 rollers 5 Running yarn 6 Unwinding point 7 Cheese and roller contact 8 cheese 9 Running yarn 10 compensator 11 roller 12 knitting needles 13 U gauge 14 roller 15 Speedometer 16 Take-up roller 17 Kasuga type potentiometer

Claims (2)

[Claims] 1. A base component comprising at least one selected from silicone oils, mineral oils and ester oils, and water, a lower alcohol having a hydrocarbon group having 1 to 15 carbon atoms and an alkyleneylene of the lower alcohol. 0.1 to 20% by weight of at least one selected from oxide (1 to 5 mol) adducts and 0.1 to 0.1% of an emulsifier.
A treatment agent for elastic fibers containing 30% by weight. 2. The treatment agent according to claim 1 is 0.1 to 15
An elastic fiber characterized by being provided in a weight percentage.