JP2007146322A - Fiber structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a fiber structure containing a polyamide-based fiber, having excellent durable antistatic properties and stain resistance. <P>SOLUTION: In the fiber structure containing a polyamide-based fiber at least at a part, a sulfone group-containing compound and/or a polyhydric phenol-based compound is stuck to the surface of the polyamide-based fiber and further an antistatic polymer is stuck to the surface of the polyamide-based fiber. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a polyamide-based fiber-containing fiber structure having excellent durability and anti-fouling properties.

Conventionally, many durable antistatic processes for fiber structures have been proposed. A method of applying a block copolymer of water-soluble polyalkylene glycol in a bath at the same time as dyeing, a pad dry cure method (Patent Document 1), or a unit having a polymerizable vinyl group mainly composed of polyalkylene oxide. Examples thereof include a synthetic fiber structure in which a polymer is polymerized on the fiber surface (Patent Document 2). All of these have durability against polyester fibers, but have no effect on polyamide fibers.

Further, as an antistatic process for polyamide fibers, a fiber product (Patent Document 3) in which a quaternary ammonium type water-soluble resin is attached to a fiber using a silicon urethane resin as a binder has been proposed. However, sufficient durability cannot be obtained from the viewpoint of the adhesiveness between the binder and the polyamide fiber.
JP-A-57-205585 JP-A-48-27066 JP 2000-110078 A

  In view of the background of such prior art, the present invention is intended to provide a polyamide-based fiber-containing fiber structure having excellent durability and antifouling properties.

In order to solve the above problems, the present invention employs the following means.
(1) In a fiber structure containing at least one part of a polyamide-based fiber, a sulfone group-containing compound and / or a polyhydric phenol-based compound is fixed to the surface of the polyamide-based fiber, and further an antistatic polymer is fixed. A fiber structure characterized by that.
(2) Polymerizability in which the antistatic polymer has two or more acrylic groups and / or methacrylic groups as both ends of one of the main chains mainly composed of polyalkylene oxide segments or one end or side chain of the main chain. The fiber structure according to (1) above, which is a polymer obtained by polymerizing monomers.
(3) The antistatic polymer contains inorganic fine particles, and the weight mixing ratio of the polymer / inorganic fine particles is 1 / 0.04-1.0. The fiber structure as described in 1) or (2).
(4) The fiber structure according to any one of (1) to (3), wherein the inorganic fine particles are silicon oxide.
(5) The fiber structure according to any one of (1) to (4), wherein the fiber structure is at least one selected from an inner, an underwear, a blouse, a dress shirt, a skirt, a slacks, and a lining.

  ADVANTAGE OF THE INVENTION According to this invention, the fiber structure which has the durable antistatic property and antifouling property in the polyamide-type fiber structure that durability cannot be acquired can be provided.

  As a result of intensive studies on the above-mentioned problem, that is, a polyamide-based fiber-containing fiber structure having antistatic and water-absorbing durability, the antistatic polymer is not directly fixed to the surface of the polyamide-based fiber. First, it has been clarified that the problem can be solved all at once by fixing the sulfone group-containing compound and / or the polyhydric phenol compound.

  The polyamide-based fiber referred to in the present invention is a synthetic fiber made of a copolymer of these polyamides such as nylon 6, nylon 66, nylon 11, nylon 12, aromatic nylon, and the like, mixed fiber, It is a fiber structure used as a blend, union, union, or covering yarn, and it is sufficient that polyamide fibers are used in at least one part.

  In the fiber structure of the present invention, a sulfone group-containing compound and / or a polyhydric phenol compound is fixed to the surface of the polyamide fiber.

  As the sulfone group-containing compound of the present invention, those having affinity for the amino group of the polyamide-based fiber having a sulfone group in the molecular structure are preferable. For example, a salt of an α-olefin sulfonate or a sulfonate of a phenol formalin resin, Examples include dimethyl sulfonic acid sodium salt of isophthalic acid. More preferred is a salt of an α-olefin sulfonate having an average carbon number of 12 to 30.

  When the sulfone group-containing compound reacts with the amino group of the polyamide fiber, the surface properties of the polyamide fiber are changed, and the adhesion to the antistatic polymer is improved.

  Examples of the polyhydric phenol compound of the present invention include natural tannins and synthetic tannins represented by sulfonated phenol formalin resins such as novolac type and resol type. When natural tannin is used, it should be used in combination with tartar. If a polyhydric phenol compound is used, the polyhydric phenol compound forms a film on the surface of the polyamide fiber. This changes the surface properties of the polyamide fiber and improves the adhesion to the antistatic polymer.

  The sulfone group-containing compound and the polyhydric phenol compound may be used alone or in combination.

  The adhesion amount of the sulfone group-containing compound and polyhydric phenol compound to the fiber structure is preferably 0.05 to 6% by weight, more preferably about 0.1 to 2% by weight in terms of solid content. When the amount is less than 0.05% by weight, the effect is not sufficiently exhibited. When the amount exceeds 6% by weight, the texture tends to be hard.

  The method for fixing the sulfone group-containing compound and / or polyhydric phenol compound to the fiber is not particularly limited, but preferably an aqueous solution containing the sulfone group-containing compound and / or polyhydric phenol compound ( Hereinafter, the fiber structure is preferably immersed in the pretreatment). The pretreatment liquid is preferably adjusted to pH 2 to 6 in order to obtain the effect. When the pH is less than 2, the polyamide fiber may be deteriorated. When the pH exceeds 6, the effect is not sufficiently exhibited. For pH adjustment, an acid such as acetic acid, maleic acid, hydrochloric acid, sulfuric acid, formic acid may be used, and there is no particular limitation.

  The bath ratio (weight ratio) between the fiber structure and the pretreatment liquid is not particularly limited, but a range of 10 to 50 pretreatment liquids with respect to the fiber structure 1 is preferable.

  The pretreatment temperature is preferably 40 to 100 ° C, more preferably 50 to 80 ° C, and the treatment time is preferably 10 to 60 minutes, and more preferably 15 to 40 minutes.

  In the present invention, the sulfone group-containing compound and / or the polyhydric phenol compound is fixed to the fiber surface, and the antistatic polymer is further fixed.

  The antistatic polymer of the present invention is not particularly limited, and examples thereof include water-soluble urethane polymers, hydrophilic group-containing acrylic copolymers, and polyethylene glycol-containing polyester resins. Preferably, it is a polymer obtained by polymerizing a polymerizable monomer having two or more acrylic groups and / or methacrylic groups as both ends or one end of the main chain mainly composed of a polyalkylene oxide segment or a side chain of the main chain. It is a coalescence.

  Examples of the monomer having two or more acrylic groups and / or methacrylic groups as both ends or one end of the main chain or a side chain of the main chain mainly composed of the polyalkylene oxide segment in the present invention include polyethylene glycol diester. Acrylate, polyethylene glycol dimethacrylate, polyethylene glycol-polypropylene glycol dimethacrylate, polyethylene glycol-polypropylene glycol diacrylate, ethylene oxide adduct dimethacrylate of bisphenol A, ethylene oxide adduct diacrylate of bisphenol A, propylene oxide adduct of bisphenol A Dimethacrylate, propylene oxide adduct diacrylate of bisphenol A, etc., alone or in combination of two or more It can be used as.

  A polymerization initiator can be used to polymerize the monomer. Examples of the polymerization initiator include general vinyl polymerization initiators such as ammonium persulfate, potassium persulfate, azobisisobutyronitrile, and ammonium sulfate. Can be used.

  In the present invention, the polymer preferably contains inorganic particles. When the polymer film is fixed or formed on the fiber surface, the presence of inorganic particles in the polymer improves the film strength of the polymer and remarkably improves the film formability. is there.

    Examples of the inorganic fine particles of the present invention include aluminum oxide, silicon oxide, titanium oxide, kaolinite, talc, calcium carbonate, calcium silicate, magnesium oxide, and the like. These may be used alone or in admixture of two or more. it can. The particle diameter of the particles is 5 to 400 nm, preferably 10 to 200 nm. If it is smaller than 5 nm, the effect of improving the film-forming property is small, and if it exceeds 400 nm, the film formation of the polymer may be insufficient. Therefore, the inorganic fine particles preferably have a particle size in the range of 5 to 400 nm. However, particles having a particle size outside the particle size range do not affect the formation of the irregularities, for example, exceed 0% and exceed 10%. It can be included to the extent. As the inorganic particles in the particle range, commercially available inorganic particles in the specific particle range can be used, but it is preferable to use them in a dispersion state. Such a dispersion is not particularly limited, but preferably, for example, a silica core particle is generated in a reaction medium by a polymerization reaction of silicon, and a particle having a specific particle diameter is formed by controlling the particle growth. .

     The weight mixing ratio of the polymer of the present invention and the inorganic fine particles is preferably 0.4 or more, more preferably 0.04 to 1.0 with respect to the polymer 1. When the amount is less than 0.04, the effect of improving the strength and formability of the polymer film is small, and when it is more than 1.0, the film strength is decreased and the film formation property is inhibited and the antistatic performance may be difficult to be obtained. is there.

    As a method for fixing the polymer containing inorganic fine particles to the fiber surface, the fiber structure is immersed in an aqueous dispersion of the polymer, dried at 100 to 140 ° C., and then heat-set at 150 to 180 ° C. It is preferable. Further, as a method of fixing the polymer obtained by polymerizing the monomer to the fiber surface, the polymerization initiator is mixed with an aqueous dispersion of the polymerizable monomer, and a fiber structure is added to the aqueous dispersion. Then, a continuous or non-continuous film can be formed on the fiber surface by treatment in a saturated water vapor or supersaturated water vapor atmosphere at 80 to 160 ° C. for 0.5 to 10 minutes.

    Thereafter, it is washed for 1 to 5 minutes at a temperature of 40 to 80 ° C. in a washing solution containing a nonionic surfactant and sodium carbonate, and then washed with water to remove unreacted monomers and polymerization initiators. It is possible to employ a drying method at 140C, a heat setting method at 140 to 180C, and the like. Moreover, after giving an aqueous liquid and drying at 100-130 degreeC, the method of carrying out a water vapor treatment can also be employ | adopted.

    After fixing the polymer, it is treated with an antistatic agent, a water absorbing agent, a moisture absorbing agent, a water repellent agent, an oil repellent agent, an antifouling agent, a colorant, a lubricant, etc., as long as the effect of the present invention is not impaired. It doesn't matter.

    In this way, the properties of polyamide fibers that are difficult to obtain durability such as antistatic properties are sealed by pretreatment, and the polymer film is firmly fixed, so that excellent antistatic properties, water absorption, antifouling properties are obtained. Thus, a polyamide fiber-containing fiber structure having the above durability can be obtained.

  The fiber structure of the present invention is suitably used for applications such as inners, underwear, blouses, dress shirts, skirts, slacks, and linings.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these. Moreover, the quality evaluation in an Example was implemented with the following method.

(Friction band voltage)
Using the method defined in the JIS L 1094B method (friction band voltage measurement method), the friction band voltage is measured using cotton as the target fabric in an atmosphere of 20 ° C. × 40% RH after processing and after 20 home washings ( V). The larger the value, the worse the antistatic property.

  In addition, home washing was performed by the following washing method.

(Anti-fouling property)
After placing 150 cc of a 6.4 mm diameter stainless steel ball in a 450 cc test bottle attached to a rounder meter-type laundry tester and preheating to 40 ± 2 ° C., a sample (white: 5 cm × 10 cm), attached to a testing machine and rotated at 40 ± 2 ° C. for 20 minutes, then the sample was taken out, washed with water and air-dried. The degree of contamination of the soiled cloth was determined by the gray scale for dyeing fastness test specified in JIS L 0805, and the degree of contamination resistance during washing was determined. The results were displayed as (grade). Larger numbers indicate less contamination.

Moreover, it was washed by the following method.
(Washing method)
A weak alkaline synthetic detergent specified in JIS K 337 is dissolved in an automatic inversion swirl electric washing machine to a concentration of 0.2%, a bath ratio of 1:50, and a temperature of 40 ± 2 ° C. under strong conditions. Was washed for 25 minutes, then drained and washed with overflow water for 10 minutes.times.2 times was set as 5 times of washing, and this was repeated 4 times, followed by air drying.

Example 1
A plain fabric having a weaving density of 48 × 35 yarns / cm was woven using 78 dtex, 26 filaments of warp yarn made of nylon 6 and raw yarn of 78 dtex, 24 filaments for weft yarn. Next, the obtained woven fabric was scoured by a continuous scourer at a temperature of 95 ° C. according to a conventional method, washed with hot water, then dried at 130 ° C., and pinter set at 180 ° C. Subsequently, it was dyed with a liquid dyeing machine, dried at 130 ° C., and pintter set at 170 ° C. to obtain a scarlet woven fabric having a warp / width of 140/88 / 2.54 cm.

    The obtained dyed fabric was pretreated as shown below.

  Pretreatment of pH 4 by adding Sun Life TN (manufactured by Nikka Chemical Co., Ltd., solid content 20%), which is a sulfone group-containing compound, to 0.6% by weight of solid weight and acetic acid to water. A liquid was prepared.

Using a liquid dyeing machine, the dyed cloth obtained above was treated with a pretreatment liquid at 80 ° C. for 20 minutes, washed with water, dehydrated and dried.
Elastron W-11 (produced by Daiichi Kogyo Seiyaku Co., Ltd., solid content 25%), which is an emulsion of urethane polymer, was dissolved in water at a concentration of 100 g / l, and the treated cloth obtained above was dissolved in the above-mentioned cloth. Immerse in the treatment liquid, squeeze with mangle, adjust the treatment liquid adhesion amount to 100% by weight, use a pin tenter to dry at 130 ° C, and then use the pin tenter to heat-treat at 170 ° C. To obtain a processed cloth.
Example 2
In Example 1, instead of Sun Life TN (manufactured by Nikka Chemical Co., Ltd.), Impulver S-50, a sulfone group-containing compound (manufactured by Kyo Silk Chemical Co., Ltd., solid content 50%) as a pretreatment processing agent. In addition, when dissolving Elastron W-11 (Daiichi Kogyo Seiyaku Co., Ltd., solid content 25%) in water, silicon oxide fine particles (Snowtex OL, particle size 40-50 nm, Nissan Chemical Industries ( A processed fabric was obtained in the same manner as in Example 1 except that a solid content of 20% by weight (manufactured by Co., Ltd.) was added at a weight ratio of 0.1 to the polymer 1.

Example 3
In Example 2, as a polymerizable monomer, polyethylene glycol dimethacrylate having a molecular weight of 1000 (polyalkylene oxide segment) (solid content: 100% by weight) was used, and the same treatment as in Example 2 was performed as follows. To obtain a processed cloth.

    The monomer was dissolved in water at a concentration of 20 g / l and added thereto so that the solid content of the silicon oxide fine particles was 0.1 weight ratio to the monomer 1. The pretreated cloth was immersed therein, squeezed with mangle, and adjusted so that the amount of the treatment liquid adhered was 100% by weight, and then treated in a saturated steam atmosphere at 106 ° C. for 3 minutes.

    Subsequently, it was washed for 1 minute in a 60 ° C. aqueous solution containing 1 g / L of a nonionic surfactant and 1 g / L of sodium carbonate, washed with water, dried at 130 ° C., and pinter set at 160 ° C.

Example 4
In Example 3, dimafix ESH (manufactured by Meisei Chemical Industry Co., Ltd., solid content 20%), which is a polyphenol compound, was used as a pretreatment processing agent. A processed cloth was obtained in the same manner as in Example 3 except that a diameter of 8 to 11 nm, manufactured by Nissan Chemical Industries, Ltd., solid content of 30% by weight was used.

Example 5
In Example 4, Sunlife TN (manufactured by Nikka Chemical Co., Ltd., solid content 20%), which is a sulfone group-containing compound, was used as a pretreatment processing agent, and CLA110 (particle diameter 180 to A processed fabric was obtained in the same manner as in Example 4 except that 200 nm, manufactured by Kyoeisha Chemical Co., Ltd., and a solid content of 10% by weight was used.

Example 6
In Example 5, Impulver S-50, a sulfone group-containing compound (manufactured by Kyo Silk Chemical Co., Ltd., solid content 50%) was used as the pretreatment processing agent, and MP4540 (particle size 420) was used as the silicon oxide fine particles. ˜480 nm) (worked by Nissan Chemical Industries, Ltd., solid content 40 wt%) was used in the same manner as in Example 5 to obtain a processed cloth.

Comparative Example 1
In Example 2, pretreatment was not performed, and the same procedure as in Example 2 was performed except that CLA110 (particle size: 180 to 200 nm, manufactured by Kyoeisha Chemical Co., Ltd., solid content: 10% by weight) was used as silicon oxide. A processed cloth was obtained.

Comparative Example 2
In Example 1, pretreatment was not performed, and the same as Example 1 except that polyethylene glycol dimethacrylate (solid content: 100% by weight) having a polyalkylene oxide segment molecular weight of 1000 was used as the polymerizable monomer. Thus, a processed cloth was obtained.

Comparative Example 3
In Example 3, a work cloth was obtained in the same manner as in Example 3 except that no pretreatment was performed.

The symbols in the table are as follows.
1. Pretreatment agent A. Sun Life TN (Nikka Chemical Co., Ltd., solid content 20%)
B. Impul bar S-50 (manufactured by Kyokin Kasei Co., Ltd., solid content 50%)
C. Dimafix ESH (made by Meisei Chemical Co., Ltd., solid content 20
2. Polymer composition a. Elastron W-11 (Daiichi Kogyo Seiyaku Co., Ltd., solid content 25%)
b. Polyethylene glycol dimethacrylate whose polyalkylene oxide segment has a molecular weight of 1000 (solid content: 100% by weight)
3. Silicon oxide fine particles Snowtex S (particle size 8-11nm) (Nissan Chemical Industries, solid content 30% by weight)
B. Snowtex OL (particle size 40-50nm) (Nissan Chemical Industries, solid content 20% by weight)
amount%)
C. CLA110 (particle size 180-200 nm) (manufactured by Kyoeisha Chemical Co., Ltd., solid content 10% by weight)
D. MP4540 (particle size 420-480 nm) (Nissan Chemical Industry Co., Ltd., solid content 40% by weight)
As is clear from Table 1, compared to the work cloth obtained by the comparative example, the work cloth obtained by the example was good in both antistatic properties and antifouling properties.

Claims (5)

A fiber structure comprising at least a part of a polyamide fiber, wherein a sulfone group-containing compound and / or a polyhydric phenol compound is fixed to the surface of the polyamide fiber, and an antistatic polymer is further fixed. A fiber structure. The antistatic polymer is a polymerizable monomer having two or more acrylic groups and / or methacrylic groups as both ends or one end of the main chain or a side chain of the main chain mainly composed of a polyalkylene oxide segment. 2. The fiber structure according to claim 1, wherein the fiber structure is a polymer obtained by polymerizing. 3. The antistatic polymer contains inorganic fine particles, and the weight mixing ratio of the polymer / inorganic fine particles is 1 / 0.04 to 1.0. An anti-fibrous structure described in 1. The fiber structure according to any one of claims 1 to 3, wherein the inorganic fine particles are silicon oxide. The fiber structure according to any one of claims 1 to 4, wherein the fiber structure is at least one selected from an inner, an underwear, a blouse, a dress shirt, a skirt, a slacks and a lining.