KR20000040680A - Polyester resin composition and artificial wig filament containing it - Google Patents

Abstract

PURPOSE: A polyester resin composition having a good delustering property is provided which its process is simple. CONSTITUTION: A polyester resin composition comprises 100 weight parts of polyester resin (formula 1; R is C2-C12 aliphatic or aromatic hydrocarbon; m is an integer of more than 2; n is 50-300) such as polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate and 0.2-8 weight parts of silicon dioxide having more than 0.2 ml/g of porosity, and 1-20 micrometer of bulk average particle size. The composition is extruded and drawn to give the artificial wig filament having less than 55 of surface glossiness.

Description

Polyester resin composition for artificial wig and artificial wig containing the same

The present invention relates to a polyester resin composition for artificial wig and to an artificial wig containing the same, and more particularly, to a matting property which can reduce surface glossiness, which is the biggest disadvantage of a polyester resin having excellent properties as an artificial wig material. This excellent polyester resin composition and the surface glossiness of the film state manufactured therefrom are related to artificial wigs of 55 or less.

In general, as a wig raw material, artificial hair should ultimately exhibit the effects of human hair, and for this purpose, the following properties must be provided. That is, matting, color similar to human hair, curl ability, stability of style, variability of style, flame retardancy, and antistatic property.

Until now, as a raw material capable of satisfying such properties, resins such as acrylic fiber, polyvinyl chloride, nylon, etc. have been mainly used, and acrylic fiber has the closest structure to human hair. However, acrylic fibers also have a low glass transition temperature, and when mixed with human hair, curling ability is lowered, and style stability and thermal stability are lowered.

Accordingly, polyester resins have been developed as resins that can replace acrylic fibers, and artificial hairs made of polyester resins have excellent curling ability, style stability, style polymorphism and high solvent resistance due to high glass transition temperature. It is evaluated as a material superior to other artificial hairs due to its excellent resistance.

However, the polyester resin has a beautiful surface by melt spinning and a unique surface gloss due to high refractive index, difficult to dye, poor texture due to high elastic modulus, frequent entanglement due to static electricity, difficult to comb It has a disadvantage.

In order to improve this, various methods have been disclosed. For example, in the case of poor texture due to high elastic modulus, copolyester copolymerization or blending of polystyrene terephthalate and polybutylene terephthalate may be used. The elastic modulus was improved and the touch was improved. The dyeability was solved by the original method using a color masterbatch, and the generation of static electricity was solved by treating the extrusion process or the antistatic agent in the emulsion.

The most difficult problem in using polyester resins as artificial hairs is the inherent glossiness of polyester resins. Since artificial wigs made of polyester resin have high surface refractive indexes that provide high reflection on the surface, they tend to give a shiny glow under direct sunlight. Therefore, it is necessary to roughen the surface of the artificial wig made of polyester resin in order to make the artificial wig made of polyester resin very similar to natural hair by showing no difference in gloss compared to natural hair. have. As a solution to this problem, various methods have been disclosed. Among them, the most effective method is a method of adding silicon dioxide to a polyester-based resin.

However, conventional methods, such as a method of roughening the surface of an artificial wig by adding silicon dioxide to a polyester-based resin, have a problem of complicated process and inferior effectiveness. Specifically, the silicon dioxides that are commonly used have an apparent average particle diameter of about 0.01 to about 0.1 μm, and have a low porosity in an amorphous form, so as to obtain sufficient quenching by itself, about 10 to about 100 parts by weight of the total polyester resin composition. It should be added at least 20 parts by weight to achieve the desired purpose. However, in the case of the artificial hair manufactured by this method, the specific gravity is too large, there is a feeling of weight when worn, and there is a problem in that the single yarn occurs in the stretching process after spinning.

The proposed method to solve this problem is to introduce a post-processing process. In this method, 2 to 6 parts by weight of ordinary silicon dioxide is added to a polyester resin in a polymerization process or a compounding process. After the polyester resin thus prepared is spun in a conventional spinning machine for fibers, an unstretched or unstretched artificial hair is reduced in an aqueous sodium hydroxide solution to impart unevenness to the surface of the artificial hair. Then, after washing the remaining sodium hydroxide and undergoes a drying process, in the case of the non-drawn yarn through the stretching process to obtain a final artificial wig yarn.

In the case of the artificial wig yarn manufactured in this manner, daylight may cause diffuse reflection due to minute surface irregularities caused by weight loss processing to obtain sufficient quenching property.

However, in the case of the artificial wig yarn manufactured by this method, the physical properties of the wig are deteriorated due to the surface damage of the wig yarn by weight loss processing, and above all, the process is difficult and the manufacturing cost is also considerably high. Specifically, the process of managing weight loss is very difficult due to the severe change in the degree of weight loss depending on the concentration and temperature of the sodium hydroxide solution during the weight loss process. It is too high to have sufficient price competitiveness with artificial wigs made of other resins.

The object of the present invention is that the most disadvantage of polyester resin having excellent properties as a material for artificial wig is that it does not require the conventional complicated weight reduction processing to reduce the surface gloss, that is, the surface glossiness while simplifying the manufacturing process. It is to provide a polyester wig composition for artificial wig excellent in quenchability that can be sufficiently reduced.

In addition, the present invention is also characterized by providing an artificial wig containing the polyester resin composition for artificial wig.

The artificial wig polyester resin composition of the present invention for achieving the above object is 100 parts by weight of polyester-based resin, 0.2-8 parts by weight of silicon dioxide having a porosity of 0.2 ml / g or more and an apparent average particle diameter of 1 to 20 ㎛ It is characterized by containing.

The present invention will be described in more detail as follows.

When silicon dioxide is used for the purpose of quenching in the polyester resin composition for artificial wigs, the surface of the artificial wigs generates silicon dioxide. Conventionally used silicon dioxide has a low porosity and its average particle size is small, so that sufficient light scattering does not occur on the surface of the artificial barber, thus requiring the introduction of a separate weight reduction process.

The present invention relates to a polyester wig composition for artificial wigs that can impart sufficient quenching property to an artificial hair wig yarn made of a polyester resin without undergoing such a complicated weight loss process as mentioned above. When silicon dioxide used for the purpose of imparting silicon dioxide having a porosity of 0.2 ml / g or more and an apparent average particle diameter of 1 to 20 µm is used in an amount of 0.2 to 8 parts by weight based on 100 parts by weight of the total polyester resin, The inventors have found that artificial wigs having excellent quenching properties can be manufactured without undergoing a weight reduction process, and have completed the present invention.

Polyester-based resin used in the present invention may be represented by the following formula (1), the production can be prepared through the same method as the conventional polyester production method is one example as follows.

First, an acid component, a glycol component, and an additive such as a catalyst and various stabilizers are added to a stainless reaction vessel equipped with a stirrer, and the low molecular weight ester condensation byproduct is removed out of the system while maintaining the temperature of the reaction tube at 200 to 250 ° C. Simultaneously proceed with the ester reaction. In this case, the conversion rate of the ester reaction is terminated based on the time point of the flow rate of 95% or more of the theoretical flow rate of the low molecular weight ester by-product, and when the ester reaction is terminated, the pressure in the pipe is increased to 1 to 200 mm by increasing the internal temperature to 250 to 290 ° C. To reduce the polycondensation of the polyester. In this way, the polycondensation is carried out, the reaction is stopped at a suitable stirring load, the vacuum is broken down as nitrogen and the reactant is discharged to obtain a polyester base resin desired in the present invention.

At this time, the acid component that can be used is mainly a terephthalic acid or a lower alkyl ester compound alone, or a mixture of a small amount of isophthalic acid, orthophthalic acid terephthal or aliphatic dicarboxylic acid or a lower alkyl ester compound thereof, and the glycol component is mainly ethylene glycol or Butylene glycol alone or mixtures, or mixtures with other small amounts of 1,2-propylene glycol, 1,3-propylene glycol, 1,6-hexanediol, 1,4-cyclohexane dimethanol and the like can be used. As the catalyst, it is common to use mainly antimony dioxide, and other organic titanium compounds such as tetrabutyl titanate, tetraisopropyl titanate, or organic tin compounds alone or mixtures thereof may be used. Can be used. And when using an organo titanium compound, magnesium acetate can also be used as a cocatalyst. In addition to these main component catalysts, subsidiary materials such as antioxidants, antistatic agents and various additives may be used.

Wherein R is an aliphatic or aromatic hydrocarbon having 2 to 12 carbon atoms, m is an integer of 2 or more, and n is an integer of 50 to 300.

Two or more polyester resins prepared by the above method may be mixed and used, and for the purposes of the present invention, silicon dioxide may be added to the polyester resin polymerization process or through a separate compounding process. It does not depart from the intention of the present invention.

At this time, the silicon dioxide to be used should be excellent in porosity in order to give quenchability without going through a separate weight loss process. The porosity of silicon dioxide is expressed as limiting the average volume of actual silicon dioxide from the apparent average volume of silicon dioxide particles, and the preferred porosity is preferably 0.2 ml / g or more.

If the porosity is less than 0.2 ml / g, a small amount may not provide sufficient quenching effect without a weight loss step.

On the other hand, the apparent average particle diameter of silicon dioxide is 1 to 20㎛ according to the object of the present invention, if the apparent average particle diameter is less than 1㎛ can not give a sufficient quenching effect without a reduction process in a small amount, 20㎛ In addition to the difficulty of dispersing excess surface, it acts as an impurity, resulting in the occurrence of cut-off phenomena at the time of stretching and property degradation.

It is preferable to add 0.2-8 weight part of silicon dioxide which satisfy | fills such conditions with respect to 100 weight part of all polyester resins.

If the content is less than 0.2 parts by weight based on 100 parts by weight of the polyester resin, sufficient quenching effect cannot be expected without the weight loss process. If the content is more than 8 parts by weight, the quenching property is excellent, but the cutting effect occurs when stretching and the specific gravity is increased. There is a disadvantage in that the wear feeling falls when wearing a wig.

In addition, a pigment or color masterbatch, a color dispersant, a heat stabilizer, a lubricant, an antistatic agent, a flame retardant, etc. can be added suitably at the time of superposition | polymerization or compounding as needed within the range which does not impair the objective which concerns on this invention.

On the other hand, in order to use the produced polyester resin as a product for artificial wigs, the surface glossiness of the film state acts as a large factor, and in order to measure the glossiness, the film state method is suitable for the measurement method.

In other words, the resin of the wig is made into a film state, and a gloss value of 60 ° is measured using Murakani GMX-101. The glossiness of the film state of 60 or less is excellent in the matting effect can be used in artificial wig, more preferably 55 or less.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the Examples.

Example 1

The porosity is 1.8 ml / g and the apparent average particle size is 4 µm with respect to 100 parts by weight of the polyester resin composition containing 65 parts by weight of polybutylene terephthalate having an intrinsic viscosity of 1.0 with respect to 100 parts by weight of the polyethylene terephthalate with an intrinsic viscosity of 0.65. 1.5 parts by weight of silicon dioxide, tris- (2,4-di-t-butyl phenyl) phosphite and N, N'-hexamethylene bis (3,5-di-t-butyl-4-hydroxy-hydrocinamide 0.5 parts by weight of Iganox B 1171 (available from Ciba-Gaiji Co., Ltd.), a 1: 1 mixture of 1), and 1.2 parts by weight of a masterbatch with a 20% mixing amount of various pigments prepared for the purpose of a colorant. The mixture was extruded using a conventional twin screw extruder heated to 260 ° C., then cut into pellets and dried. This granular pellet was melted in a conventional extruder and then melt spun through a spinneret having a circular or clova shaped nozzle. The extruded yarn was blown from the surroundings using a cylindrical cooling device, cooled, and stretched at a draw ratio of 4.5: 1 while winding through a three-stage drawing roll in the case of a guide roll to prepare an artificial wig.

Example 2

A polyester-based artificial wig was prepared according to the same method as Example 1, except that silicon dioxide having a porosity of 0.4 ml / g and an apparent average particle diameter of 3 μm was used at 4 parts by weight based on 100 parts by weight of the polyester resin. It was.

Example 3

To prepare a polyester artificial wig according to the same method as Example 1, except that silicon dioxide having a porosity of 1.6 ml / g and an apparent average particle diameter of 1.4 μm was used in 6 parts by weight based on 100 parts by weight of the polyester resin. It was.

Comparative Example 1

A polyester-based artificial wig was prepared according to the same method as Example 1 except using silicon dioxide having a porosity of 0.05 ml / g and an apparent average particle diameter of 0.1 μm based on 4 parts by weight of 100 parts by weight of the polyester resin. It was.

Comparative Example 2

To prepare a polyester artificial wig according to the same method as Example 1, except that silicon dioxide having a porosity of 0.05 ml / g and an apparent average particle diameter of 0.1 μm was used at 8 parts by weight based on 100 parts by weight of the polyester resin. It was.

Comparative Example 3

To prepare a polyester artificial wig according to the same method as in Example 1, except that silicon dioxide having a porosity of 1.8 ml / g and an apparent average particle diameter of 4 μm was used in an amount of 10 parts by weight based on 100 parts by weight of the polyester resin. It was.

Comparative Example 4

A polyester-based artificial wig was prepared according to the same method as Example 1, except that silicon dioxide having a porosity of 0.4 ml / g and an apparent average particle diameter of 3 μm was used as 0.1 part by weight based on 100 parts by weight of the polyester resin. It was.

Experimental Example

The workability, appearance, glossiness, and surface glossiness of the film state of the artificial wigs prepared according to the above Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

Here, the workability measured the items related to the overall workability of the artificial wig, the appearance and glossiness were visually observed by the artificial wig, and the surface glossiness of the film state was obtained by producing a polyester resin in the film state Gloss of 60 ° was measured using GMX-101 from Murakami.

Silicon dioxide Workability Exterior Glossiness Surface gloss of film Porosity (ml / g) Average particle size (㎛) Content (parts by weight) Example One 1.8 4 1.5 ◎ ◎ ◎ 41 2 0.4 3 4 ◎ ◎ ◎ 38 3 1.6 1.4 6 ○ ◎ ◎ 32 Comparative example One 0.05 0.1 4 ◎ ◎ × 83 2 0.05 0.1 8 × ○ △ 71 3 1.8 4 10 × ○ ◎ 30 4 0.4 3 0.1 ◎ ◎ × 77 (Note) ◎: Very good, ○: Good, △: Normal, ×: Poor

According to the present invention from the results of Table 1, the artificial wig manufactured by adjusting the porosity and average particle diameter according to the present invention and adding it in a constant content is not only excellent in workability, but also excellent in appearance, glossiness and surface of film state. Excellent gloss is useful for artificial wigs.

As described in detail above, the artificial body prepared by adding 0.2 to 8 parts by weight of silicon dioxide having a porosity of 0.2 ml / g or more and an average average particle diameter of 1 to 20 µm according to the present invention with respect to 100 parts by weight of the polyester resin. The use of the wig polyester resin composition exhibits excellent quenching properties without undergoing a separate weight reduction process, and has the greatest disadvantage in controlling the surface gloss of the conventional polyester resin by applying artificial wigs.

Claims (4)

In the polyester resin composition for artificial wig manufactured by adding silicon dioxide to the polyester resin, The silicon dioxide has a porosity of 0.2 ml / g or more, an apparent average particle diameter of 1 to 20 µm, and the content thereof is 0.2 to 8 parts by weight based on 100 parts by weight of a polyester resin. Composition. The polyester resin composition for artificial wigs according to claim 1, wherein the polyester resin is a compound represented by the following Chemical Formula 1. Formula 1 Wherein R is an aliphatic or aromatic hydrocarbon having 2 to 12 carbon atoms, m is an integer of 2 or more, n is an integer of 50-300. The polyester resin composition according to claim 1 or 2, wherein the polyester resin is one or a mixture selected from polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate. The artificial wig of Claim 1 whose surface glossiness of the film state containing the polyester resin composition of Claim 1 is 55 or less.