JPH059548B2 - - Google Patents

Description

[Detailed description of the invention]

(1) Industrial Application Field The present invention relates to a processing method for imparting durable antistatic properties and durable melting resistance to polyester synthetic fiber fabrics. (2) Conventional technology In general, synthetic fibers tend to accumulate static electricity, which causes discomfort when putting on and taking them off, and causes problems such as stains due to exhaustion of dust in the air.Synthetic fibers are also sensitive to heat. There is a problem in that the contact area is easily perforated by contact with a high-heat object such as a cigarette. In order to alleviate these problems, various combinations of antistatic processing methods and melt-resistant processing methods have been proposed, but there is no processing method that has both durable antistatic and melt-resistant properties. The current situation is that it has not been put into practical use. (3) Problems to be Solved by the Invention The present invention was made in view of the above-mentioned current situation, and is a polyester-based synthetic fiber that has both anti-static properties and melt-resistant properties that can withstand repeated washing. The purpose of this invention is to provide a method for obtaining fabric through processing. (4) Means and operation for solving the problems The object of the present invention is achieved by the following configuration.
That is, the present invention immerses a polyester synthetic fiber fabric in an aqueous solution containing a self-crosslinking polyacrylic acid ester, polyethylene glycol diamine, and polyethylene glycol diglycidyl ether and squeezes it uniformly, thereby reducing the solid content based on the fiber weight. Self-crosslinking polyacrylic ester
2.5% or more, 1% or more polyethylene glycol diamine, 1% or more polyethylene glycol diglycidyl ether. The 2nd step is heat treatment at a temperature of 140°C to 170°C immediately after drying, 24 hours at room temperature. The third step is to leave it as is.
This is a method for antistatic and melt-resistant processing of a durable polyester synthetic fiber fabric, characterized by comprising a fourth step of washing and removing unreacted substances and intermediate products. The present invention will be explained in detail below. The self-crosslinking polyacrylic ester used in the present invention refers to a polyacrylic ester that has the ability to crosslink with heat, acidic catalysts, etc. When carrying out the invention, an emulsion of a generally commercially available self-crosslinking polyacrylic ester is used. You can use . Although this compound is mainly an ester of acrylic acid, various functional groups are introduced through copolymerization, and intermolecular crosslinking is caused by these functional groups. Functional groups within the polymer molecule include -COOH,
−CONH ₂ , −CONH・CH ₂ OH, −OH,

[Formula] etc. are used. The polyethylene glycol diamine used in the present invention has the general formula _NH2 - _CH2 - _O- ( _CH2 - _CH2- O) _-nCH2-
It is a compound represented by NH ₂ (where m is an integer from 10 to 90), and this compound oxidizes the hydroxyl groups of polyethylene glycol, which has hydroxyl groups at both ends, reacts with an alkylamine to create an acid amide, and then It is obtained by converting it into an isocyanate by Hofmann rearrangement with an alkali hypohalite and then decomposing this isocyanate.
Here, the molecular weight of polyethylene glycol is approximately
It is best to use one with a molecular weight of 400 to 4000.
When the molecular weight is less than 400, it becomes difficult to impart sufficient antistatic properties to the fibers, and when the molecular weight is more than 4000, it is difficult to use because it is poorly soluble in water. The polyethylene glycol diglycidyl ether used in the present invention has the general formula (However, n is an integer of 1 to 45.) It is derived from polyethylene glycol epichlorohydrin. Here, it is best to use polyethylene glycol with a molecular weight of 44 to about 2,000, and polyethylene glycol with a molecular weight of 2,000 or more can provide fibers with antistatic properties that are durable enough to withstand repeated washing and dry cleaning. Have difficulty. The above-mentioned polyethylene glycol diamine and polyethylene glycol diglycidyl ether are preferably used in a molar ratio of 3:1 to 1:5. If the amount of polyethylene glycol diamine exceeds this range, yellowing of the fibers and discoloration of the dyed object will easily occur, and if the amount of polyethylene glycol diglycidyl ether exceeds this range, it will be difficult to obtain durability against repeated washing and dry cleaning. Therefore, it is undesirable. The amount of self-crosslinking polyacrylic acid ester used varies depending on the type and form of the material to be treated, but it should be at least 2.5% solids based on the weight of the fiber.
If it is less than 2.5%, sufficient melt resistance cannot be imparted to the fiber. The amount of polyethylene glycol diamine and polyethylene glycol diglycidyl ether used is
1% or more of each solid content based on the weight of the fiber is required, and if it is less than 1%, sufficient antistatic performance cannot be imparted to the fiber. As mentioned above, the method of the present invention is characterized by comprising four steps. First, in the first step, the object to be treated is impregnated with a mixed aqueous solution of self-crosslinking polyacrylic acid ester, polyethylene glycol diamine, and polyethylene glycol diglycidyl ether, and then squeezed uniformly.
A mixture of self-crosslinking polyacrylic ester, polyethylene glycol diamine and polyethylene glycol diglycidyl ether is applied to the fibers, and then dried at 100°C to 130°C in a conventional manner. After drying, a second step of heat treatment at a temperature of 140°C to 170°C for 30 seconds to 2 minutes is performed, but this second step is an important step in the present invention, and if this step is omitted, repeated washing and drying will be required. It is no longer possible to impart antistatic and melting resistant properties to the fibers that are durable against cleaning. In the present invention, after heat treatment, the method is then heated at room temperature for 24 hours.
Perform the third step of leaving it for more than an hour. If this third step is omitted and washing is performed immediately after the heat treatment in the second step, sufficient antistatic performance and melting resistance cannot be imparted to the fiber. The cleaning method in the subsequent fourth step depends on the type of object to be treated,
Adopt an appropriate method depending on the form and add surfactant.
Use 0.5~2g/, 10 minutes~40 at 60℃~90℃
Just do it for a minute. This washing removes unreacted substances and water-soluble intermediate products on the fibers, improves the texture, and prevents yellowing of the fibers, the occurrence of yellow marks, the occurrence of spot marks (creases), and a decrease in color fastness. To prevent. After washing, drying and heat setting are performed as necessary in the same way as for general fabrics. In addition to polyethylene terephthalate fibers, the polyester fibers used in the present invention may be copolymerized polyethylene terephthalate fibers containing isophthalic acid, paraoxybenzoic acid, sulfoisophthalic acid, butylene glycol, or the like as a copolymerization component. It is theoretically unclear why the method of the present invention can impart antistatic properties and melting resistance to fibers that can withstand repeated washing and dry cleaning, but polyacrylic acid ester , conductivity obtained by crosslinking polyethylene glycol diamine and polyethylene glycol diglycidyl ether,
It is presumed that by covering the fiber surface with a film of melt-proof resin, durable antistatic performance and melt-resistant performance can be obtained. (5) Examples Next, the present invention will be explained in more detail with reference to Examples, in which the washing resistance test method and the measurement and evaluation of performance were carried out by the following methods. Washing method: Using Matsushita Electric Co., Ltd.'s fully automatic washing machine model NA-5580, add 1.3 g of Super Zabu (product of Kao Sekiken Co., Ltd.) and wash at 40℃ for 10 minutes, then at room temperature for 5 minutes. One cycle of rinsing three times, then dehydrating and drying was defined as one washing cycle. Dry cleaning method: Using a cylinder type dry cleaning tester, add Pellex OT-P (anionic, product of Kao Sekiken Co., Ltd.) and Neugen EA- to Perclean.
120 (non-ionic, Daiichi Kogyo Seiyaku Co., Ltd. product) charge soap (5 g each) and 1 c.c. of water and cleaned for 10 minutes at room temperature. Dry cleaning 1 is a cycle of washing, dehydration, and drying.
It was times. Half-life Using an honest meter (manufactured by Shishido Shokai Co., Ltd.), place the sample on a rotary plate rotating at a speed of 1730 rpm, apply a voltage of 10000 V from one end, and detect the charged voltage of the sample with an oscilloscope from the other end. Next, after removing the load voltage, the time required for the initial charging voltage of the sample to be reduced by half was measured. The measurement atmosphere is
The temperature was 20℃ x 40%RH. Frictional charging voltage Using a rotary static meter (product of Koa Shokai Co., Ltd.), rotate the sample at a rotation speed of 725 ppm.
The sample was rubbed against a No. 3 cotton cloth with a load of 400 g, and the electrostatic voltage was measured using an oscilloscope. The measurement atmosphere is
The temperature was 20℃ x 40%RH. Melting Resistance Performance A sample was stretched horizontally on a wooden frame, a lit and smoked cigarette (highlight) was placed horizontally, and the time required for the sample to melt and a hole was formed was measured and evaluated. Example 1 A twill fabric with a warp density of 69 threads/2.54 cm, a weft density of 57 threads/2.54 cm, and a basis weight of 200 g/m ² using polyester false twisted yarn 150D/30F/2 (smelting, dyeing, 15 parts by weight of Primal HA-24 (solid content 45%, manufactured by Nippon Acrylic Chemical Co., Ltd.), a self-crosslinking polyacrylic acid ester emulsion resin, and a polyethylene glycol with a molecular weight of 1000. Immerse in a mixed aqueous solution consisting of 3.5 parts by weight of polyethylene glycol diamine, 3.5 parts by weight of polyethylene glycol diglycidyl ether with a molecular weight of 600, and 81 parts by weight of water, and squeeze uniformly at a squeezing rate of 70% (first step). After drying at 110℃ for 3 minutes, dry at 160℃
A heat treatment (second step) was performed for 1 minute. Next, after leaving it at room temperature for 48 hours (third step), Sun Mall FL
(Nicca Chemical Co., Ltd. product, nonionic surfactant) 1g/washed at 80℃ for 20 minutes, thoroughly rinsed with water (fourth step), dried at 120℃ for 3 minutes, and then Setting was carried out at 170°C for 1 minute to obtain a treated fabric according to the method of the present invention. For comparison with the method of the present invention, as a comparative example A, the second and third steps in this example were omitted, as a comparative example B, the third step in this example was omitted, and as a comparative example C, the second and third steps in this example were omitted. Each fabric was processed in exactly the same manner as in this example, except for omitting some steps, to obtain treated fabrics for comparison. The obtained treated fabric was washed 10 times and 50 times.
After carrying out the dry cleaning test 10 times, the antistatic performance and melting resistance performance were measured, and the results are shown in Table 1.

[Table] As is clear from Table 1, according to the method of the present invention, it is possible to impart antistatic performance and melting resistance to fibers that can withstand repeated washing 50 times and dry cleaning 10 times. Example 2 Using polyester false twisted yarn 150D/48F, warp density 101 threads/2.54cm, weft density 82 threads/2.54cm, basis weight
145g/ ^m2 twill fabric (smelted, dyed,
20 parts by weight of Primal HA-8 (solid content 46%, manufactured by Nippon Acrylic Chemical Co., Ltd.), a self-crosslinking polyacrylic acid ester emulsion resin, and polyethylene glycol with a molecular weight of 800. 5 parts by weight of polyethylene glycol diamine, 3 parts by weight of polyethylene glycol diglycidyl ether with a molecular weight of 800, and 72 parts by weight of water, and squeezed uniformly at a squeezing rate of 75% (first step), After drying at 120°C for 3 minutes, heat treatment was performed at 170°C for 45 seconds (second step). Then at room temperature
After leaving for 48 hours (3rd step), apply Sunmoor FL (non-ionic surfactant, product of NICCA Chemical Industry Co., Ltd.) 1
Wash at 80℃ for 20 minutes using g/, rinse thoroughly with water (4th step), and dry at 120℃ for 3 minutes.
Heat setting was carried out at 170° C. for 1 minute to obtain a treated fabric according to the invention. The obtained treated fabric was washed 10 times and 50 times.
After conducting the dry cleaning test 10 times, the antistatic performance and melting resistance performance were measured, and the results are shown in Table 2.

【table】

[Table] As is clear from Table 2, the fabric treated by the method of the present invention has durable antistatic performance and melting resistance. (6) Effects of the Invention According to the processing method of the present invention, excellent and durable antistatic performance and melting resistance can be achieved without deteriorating the antistatic performance and melting resistance even after repeated washing and dry cleaning. Performance can be imparted to polyester fabrics.

Claims (1)

[Claims] 1 By immersing a polyester-based synthetic fiber fabric in an aqueous solution containing self-crosslinking polyacrylic acid ester, polyethylene glycol diamine, and polyethylene glycol diglycidyl ether and squeezing it uniformly, self-crosslinking polyacrylic is produced in terms of solid content based on the fiber weight. The first step is to add 2.5% or more of acid ester, 1% or more of polyethylene glycol diamine, and 1% or more of polyethylene glycol diglycidyl ether, starting at 140℃ immediately after drying.
The second step is heat treatment at a temperature of 170℃, at room temperature
A method for antistatic and melt-resistant processing of a durable polyester synthetic fiber fabric, comprising a third step of leaving it for 24 hours, and a fourth step of washing and removing unreacted and intermediate products.