KR101223340B1 - Non-silicon based spandex spinning oil composition and spandex fiber prepared by using the same - Google Patents

Abstract

The present invention relates to a spandex yarn-based spinning oil and a spandex fiber prepared using the same, and more particularly, refinement of yarns by using hydrophilic hydrocarbons with easy oil desorption in place of conventional silicone spinning oils. The present invention relates to an easy spinning non-silicone spandex spinning agent and a spandex fiber produced using the same.

Spandex, spinning oil, refinery, hydrocarbon, surfactant

Description

Non-silicon-based spandex spinning oil composition and spandex fiber prepared by using the same}

The present invention relates to a spandex yarn-based spinning oil and a spandex fiber prepared using the same, and more particularly, refinement of yarns by using hydrophilic hydrocarbons with easy oil desorption in place of conventional silicone spinning oils. The present invention relates to an easy spinning non-silicone spandex spinning agent and a spandex fiber produced using the same.

In general, spandex corresponds to a general term of polyurethane elastic fibers, and has excellent elongation and elastic recovery rate. However, in the water washing and refining process of removing the oil agent adhered to the fiber prior to the dyeing process, the spandex emulsion mainly containing polymethylene siloxane has a low affinity with water and poor refining properties. As a result, the presence of residual emulsion on the fabric prevents the dyeing of the dyes, resulting in undyed salt spots and stripe, resulting in the problem of uneven dyeing.

Therefore, Japanese Patent Publication (2008-45266) introduces a method for improving the refining ability by using a nonionic surfactant that can be used in the refining process of the fiber as a composition of the refining agent.

However, according to the method of the prior art, the refining properties are different depending on the type and characteristics of the fiber, and even in the same yarn, the refining is not uniform, and staining and staining still occur during dyeing processing.

The present invention has been invented to solve the above problems, the present invention is easy to refine the non-silicone spandex to improve the degree of refinement of the yarn by using a hydrophilic hydrocarbon easily removable oil emulsion instead of the conventional silicone-based spinning oil It is an object to provide a spinning oil and a spandex fiber prepared using the same.

Easily refined non-silicone spandex spinning emulsion of the present invention for achieving the object as described above comprises 60 to 90% by weight hydrocarbon, 9 to 40% by weight polydimethylsiloxane and 0.1 to 10% by weight of nonionic surfactant Characterized in that.

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In addition, the hydrocarbon is characterized in that the polyethylene oxide having a molecular weight of 1000 or more.

In addition, the nonionic surfactant is characterized by having the following structure.

R ₁ -O (R ₂ -O) _X H

In the formula, R ₁ is 5 to 20 carbon atoms including an alcohol group, R ₂ is a component consisting of 1 to 40 alkyl oxide group (R ₂ O-) consisting of 1 to 10 carbon atoms.

By using the non-silicone type spinning oil of the present invention, the degree of refinement of the yarn can be ensured to 80% or more by using a hydrophilic pure hydrocarbon that is easily desorbed during oil washing. In addition, by using high-viscosity pure hydrocarbons, the smoothness on the surface of the spandex yarn can be increased to ensure good inter-bed friction characteristics and maritime characteristics.

Easily refined non-silicone spandex spinning oil according to the present invention comprises 60 to 90% by weight hydrocarbon, 9 to 40% by weight polydimethylsiloxane and 0.1 to 10% by weight of nonionic surfactant.

The hydrocarbon in the present invention uses 60% by weight to 90% by weight of polyethylene oxide which is synthetic hydrocarbon. If less than 60% by weight, there is a problem that the refining of the yarn is poor, and if more than 90% by weight, smoothness is dropped, there is a problem of maritime properties.

Synthetic hydrocarbons (polyethylene oxide) are synthetic hydrocarbons containing carbon, hydrogen and oxygen (oxide groups).

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In addition, the method uses 60 to 90% by weight of polyethylene oxide, a synthetic hydrocarbon. Since the hydrocarbon has a molecular weight of 1000 or more and a narrow molecular weight distribution, it improves the penetration into yarns and improves smoothness, thereby obtaining good frictional properties and maritime characteristics. can do.

When the above-described hydrocarbon-based oil agent is applied to spandex yarn, it is possible to produce spandex having excellent yarn properties and excellent refining ability.

9 to 40 weight percent polydimethylsiloxane is used. Polydimethylsiloxane can be represented by the following general formula (I).

In formula, R <_3> , R <_4> is respectively independently a hydrogen atom, a substituted or unsubstituted C1-C30 alkyl group, or a substituted or unsubstituted C6-C30 aryl group.

In the formula, 'substituted' means substituted with an acryl group, an amino group, a hydroxyl group, a carboxy group, an aldehyde group, an epoxy group, and a nitrile group.

Although the viscosity of the polydimethylsiloxane of the formula (I) can be selected arbitrarily, 7 to 15 centistokes is preferable in order to improve friction resistance and heat resistance with the guide during post-processing.

The nonionic surfactant is included in 0.1 to 10% by weight. If the nonionic surfactant is added less than 0.1% by weight, the emulsification degree of the spandex yarn is insignificant, and when it is added more than 10% by weight, the sea tension of the spandex yarn is lowered, which may cause problems such as dropping.

Examples of the nonionic surfactants include compounds having the formula (II).

R ₁ -O (R ₂ -O) _X H (II) ---- Formula (II)

Formula (II) is a component consisting of R ₁ having an alcohol group having 5 to 20 carbon atoms and 1 to 40 R ₂ O-groups which are alkyl oxide groups having 1 to 10 carbon atoms.

The preparation of the spandex fiber emulsion according to the present invention is prepared by adding a nonionic surfactant to hydrocarbons and polydimethylsiloxane, sufficiently stirring at room temperature for 1500 rpm for at least 20 minutes, and then mixing other additives. In this case, the dispersion properties of the emulsion are different depending on the order of additive mixing, which is why the smoothness of the emulsion when applied to spandex fibers. permeability. In terms of uniformity, there may be a difference in characteristics.

The spinning emulsion according to the present invention includes a nonionic surfactant, which is applied to the yarn, thereby providing uniform refining properties of the yarn and fabric, lowering the surface tension energy of the emulsion and water, and increasing the affinity to the particle size of the emulsion distributed in water. Improve the refinement by reducing the

When the above-described hydrocarbon-based oil agent is applied to spandex yarn, it is possible to produce spandex fiber having good yarn properties and excellent refining ability. In particular, it is possible to produce an excellent spandex fiber with a refinement of 80% or more. If the degree of refinement is lower than 80%, an emulsion is present on the fabric, which causes dyeing unstained spots and streaks during dyeing processing, resulting in poor dyeing.

Hereinafter, the present invention will be described in more detail with reference to the following Examples, but the present invention is not limited thereto.
&Lt; Example 1 >
The following Example 1 emulsion having the composition shown in Table 1 attached to the 20 denier spandex and then evaluated the F / M (Fiber to metal) friction characteristics and long-term maritime characteristics (after 3 months) and the refinement of the yarn in Table 1 Indicated.
<Example 2>
Immediately after spinning, the yarn characteristics of Example 2 after using the spinning emulsion having a composition as shown in Table 1 are shown in Table 1 below.

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<Example 4>

The yarn characteristics of the yarn after using the spinning oil of the same composition as in Example 2 except that polyethylene oxide hydrocarbons were used instead of pure hydrocarbons are shown in Table 1 below.

&Lt; Comparative Example 1 &

The emulsion was prepared by preparing the emulsion as shown in Table 1 below, and the yarn properties were evaluated after attaching to the spandex in the same manner as in Example 1.

Example 4 Comparative Example 1 Mineral oil
(weight%) Low viscosity
(10cp) - 27 High viscosity
(30cp) - - Synthetic hydrocarbons
(weight%) Polyethylene oxide 80 - Nonionic Surfactant (%)
3 3 Polydimethylsiloxane (%)
17 70 Emulsion adhesion rate (%)
4-5 4-5 F / M Friction Characteristics (g)
3.4 3.7 Maritime power [g, three months later]
0.78 0.9 Refinement degree (%)
83 65
-> Refinement (%): OPU (Oil take up) difference before and after yarn removal
Refining Degree (%) = {(OPU% before refining-OPU% after refining) / (OPU% before refining)} x 100
-> F / M Friction Measurement Method

Claims (5)

Easily refined non-silicone spandex spinning oil comprising 60 to 90% by weight of polyethylene oxide, 9 to 39.9% by weight of polydimethylsiloxane and 0.1 to 10% by weight of nonionic surfactant. delete The non-silicone spandex spinning oil according to claim 1, wherein the polyethylene oxide has a weight average molecular weight of 1000 or more. 2. The non-silicone spandex spinning oil of claim 1, wherein the nonionic surfactant has the following structure. R ₁ -O (R ₂ -O) _X H In the above formula R ₁ is alkyl having 5 to 20 carbon atoms, R ₂ is alkyl having 1 to 10 carbon atoms, x is 1 to 40. A spandex yarn manufactured by applying the anti-emulsion agent according to any one of claims 1, 3, or 4, wherein the refining degree of the non-silicone spandex spinning oil is 80% or more. Spandex fiber using.