JPS5854080A - Hydrophilic synthetic fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to synthetic fibers having excellent hydrophilic and antistatic properties.

Synthetic fibers such as nylon, polyester, and acrylic fibers have many superior characteristics compared to natural fibers, and are currently being used with great envy not only in the clothing field, but also in the interior and materials fields.

For example, by utilizing the hydrophobic property of synthetic fibers,
Typical examples include shirts, slacks, and other clothing that are easy to care for and can be washed, washed, and worn. It has the advantages of 12 or t7
However, while it has the above-mentioned characteristics, it also has some drawbacks, such as the fact that clothing has little sweat-absorbing properties (also, when worn, static electricity builds up around the hem, causing an unpleasant electrical discharge sound). There is an outbreak.

In order to improve these major drawbacks of synthetic fibers, the present invention imparts hydrophilicity and antistatic properties at the same time.To achieve this, the synthetic fibers are treated with a special silicone compound as shown below. [This is an extremely excellent product whose effects are clearly visible. That is, in the present invention, the molecular weight is 500 to 2.
0, OOO, 0.01 to 3 wt% of a compound of the following general formula (I) in which the silicon component is 60 wt% or less and the weight composition ratio of ethylene oxide and propylene oxide satisfies the following formula (b) is added. It is a synthetic fiber with hydrophilic properties.

0 (C2H40)a (CB Ha O)b R"In the formula, R' is a lower alkyl group having 1 to 4 carbon atoms, R is a lower alkylene group having 1 to 4 carbon atoms, R11 is hydrogen or a lower alkyl group, x, b represents an integer of 0 or 1 or more, and Y and a represent an integer of 1 or more.

Conventional methods for making synthetic fibers hydrophilic have involved modification during the manufacturing stage and modification treatment during the post-processing stage. For example, modification methods at the manufacturing stage include a method of modifying the polymer itself using a copolymer with a functional monomer having an alkylene oxide group, and a method of blending and spinning polyethylene oxide or other hydrophilic substances during spinning. It was done. Generally known post-processing techniques include a method of generating hydroxyl groups or carboxyl groups by acid or alkali hydrolysis, and a method of processing with a processing agent whose main component is an activator containing ethylene oxide or its derivatives. ing.

However, the eastern method, which improves the fiber matrix at the manufacturing stage, requires a major change in manufacturing conditions and an associated cost increase, and requires changes in post-processing conditions for standard yarns. 9 processing is common in the form of knitted fabrics, and processing in the form of threads is rarely put into practical use due to the extremely poor passability of the subsequent processing steps, that is, knitting and weaving processes (thread smoothness, etc.) is the current situation.

On the other hand, the present invention uses ordinary yarn as it is,
This is a post-processing process, and is an epoch-making method that provides extremely excellent hydrophilicity and process passability by applying a specific amount of a special silicon compound as described above after cheese dyeing is completed, for example. The present invention is characterized in that there is no problem in hydrophilic performance and subsequent processability by treating ordinary raw yarn or processed yarn, but even when this treatment agent is applied to fabrics such as knitted fabrics, Sufficient hydrophilic performance can be obtained. Furthermore, the same hydrophilic properties can be obtained even when synthetic fibers are treated with nylon, polyester, acrylic fibers, etc.;
It is also possible to impart exactly the same hydrophilic properties to cross-twisted yarns and their products. That is, what is important in the present invention is that the above-mentioned special silicon compound has a [1,01 to 3
The details of the present invention will be described below, focusing on examples using acrylic fibers or acrylic long fibers.

As mentioned above, the treatment agent used in the present invention is a copolymer containing alkylene oxide components of ethylene oxide and propylene oxide to impart hydrophilicity, and a silicone component to prevent smoothness from decreasing. .

Conventionally, paraffin wax and silicone resin have been commonly used as a means of reducing the coefficient of friction of threads against metals and the coefficient of dynamic friction between threads, but all of these exhibit water repellency. Simply mixing this smoothness improver with a hydrophilic active agent such as ethylene oxide or an oil agent will add to the hydrophilic performance and smoothness, and at the same time deteriorate the grain's practical performance (e.g. color fastness, skin damage, etc.). ) was impossible to satisfy. As a result of extensive research conducted by the present inventors, it was discovered that by using a special silicone block polymer having a general formula that satisfies (I) and @, a yarn with excellent hydrophilicity and passing through the processing process was developed. This was a success and led to the present invention.

The necessary conditions for the treatment agent used in the present invention are that the molecule tL of the silicon block polymer of the above general formula is son ~ 2o, o
oo, the silicon component is 6 D wt% or less, and the weight composition ratio of ethylene oxide and propylene oxide is as shown in the above formula (b), and the amount of ethylene oxide in the total alkylene oxide is at least 10'wt.
It is necessary that it is greater than or equal to gJ. The reason for this is that when the molecular weight exceeds 20,000, the form at room temperature becomes paste-like or solid, and the solubility in water decreases, making it difficult to adhere uniformly, and also from the viewpoint of handling during work. Not practical. On the other hand, those in the low molecular weight range of 500 or less have good solubility in water, but have the ability to release dyes bound to fibers, and generally cause a decrease in color fastness and cause itchiness and rash on the human body. There are concerns about the occurrence of skin disorders such as

The weight composition ratio of ethylene oxide and propylene oxide increases as the number of propylene oxide needles increases, and as the molecular weight becomes higher, the solubility in water decreases, making uniform pricking a national problem, and from a work standpoint. I also don't like it.

Next, regarding silicone components, dimethylpolysiloxane and methylhydrodienepolysiloxane have traditionally been used to improve the smoothness of yarns, but as the ratio of these silicone components increases, the smoothness of yarns improves and knitting properties are improved. Sewing”2 troubles are reduced, and process passability is very favorable.
give good results. However, this silicon component is a negative factor in imparting the desired hydrophilicity, so the balance with the amount of alkylene oxide is extremely important. Must not be.

The appropriate amount of the treatment agent used in the present invention differs depending on the form of the synthetic fiber to be treated, but in the case of final finishing of yarn-dyed fabrics such as jersey and textiles, hydrophilic performance can be obtained even with a small amount. A coating amount of about 4.01 to 0.02 wt is appropriate.

In the case of yarn processing such as cheese dyeing, a1 to 5 wt% is preferable in consideration of subsequent process passability, and in the case of worsted acrylic fiber yarn, 0.3 to α8 wt%, polyester,
For cheese dyeing of false twisted nylon yarn: 0.3 to 2 w
tchi is necessary.

In the case of acrylic long fibers, the raw yarn is generally prone to fibrillation, and the crimp fastness of false-twisted yarn is low, so it is very difficult to knit cheese-dyed yarns. In the case of normal long-fiber false twisted yarn,
The appropriate adhesion amount is preferably 0.5 to 2.5 vrt%.

For example, 50 d for acrylic long fiber woven fabrics.
/ 48 f raw yarn with strong twist of 500 to 2500 koji or special false twisted yarn with continuous untwisted part],
3-1. The Owt96 range has a favorable point, and products made from georgette fabrics and sinker jerseys using these yarns have a feel and texture suitable for midsummer, as well as sweat absorption and antistatic properties, making them extremely commercially valuable. It is possible to obtain a high-quality product that is comfortable to wear, similar to conventional linen products, and has a high value-added product that dries quickly even after absorbing sweat.
It can be preferably applied.

In addition, in the case of ordinary raw silk or ordinary processed yarn with a twist number of less than 5.00 TA, water absorption and quick drying properties are poor.

On the other hand, when the number of twists exceeds 2500 TA, there is a problem in terms of yarn strength and water absorption tends to be poor.

As described above, the hydrophilicity, smoothness, etc. of the product obtained by the present invention can be confirmed by the following method. Hydrophilicity can be measured using the ``water absorption length'' method (bisock method), which measures how much water a knitted fabric absorbs in a given period of time, or by dropping water droplets on the surface of the product and measuring the time it takes for the water droplets to disappear.

The details of this measurement method are based on JI8 JJ-1018 [
However, there are 10 products made of acrylic long fiber yarn dyed yarn.
The water absorption length per minute is 2 to 3 l4, while the present invention shows a performance of 90 to 4, and the water droplet disappearance rate is 60 seconds or more for the conventional product, whereas the present invention shows a performance of 90 to 4. In the case of inventions, it disappears instantly, 0 seconds.

For yarn smoothness, use Matsubara Keiki's "Knitting Properties Measuring Machine"
The smoothness of the yarn and pair of knitting needles is examined using the method, and it can be easily compared by running the yarn at a constant speed and measuring the tension at that time.

In the case of the conventional false-twisted 150 d dyed yarn made of acrylic long fibers, the tension is about 50-302, whereas in the case of the present invention, the tension is in the range of 60-3B, f, depending on the conditions. There is no particular problem in practical use.

The method for measuring color fastness is JIS method (L-0846
etc.) and mainly measures items such as water, friction, light exchange, sweat, and fastness.

The present invention will be explained below with reference to Examples.

Example-1 Acrylic long fiber Silveron (manufactured by Mitsubishi Rayon Co., Ltd.)
1 q cheese roll of 150 d/60 f continuous untwisted and false-twisted yarn was subjected to batch cheese dyeing under the following conditions. This dyed cheese was treated with a processing agent under each condition using a 1000 cheese dyeing machine, dehydrated and dried, and the performance, knitting properties, etc. of each treatment system were compared.

As shown in Table 1, the results show that N[11
-6 conditions have good hydrophilic performance and knitting properties, whereas the comparative example of Nα4 has parent wood performance but poor knitting properties, and the conventional condition of N[L 5 has poor knitting properties. Even if it is good, it is clear that there is almost no water performance.

(Dyeing conditions) →Process□--→Drying The drying NILs 1 to 3 are silicon-based compounds containing ethylene oxide and propylene oxide, and the ethylene oxide (wt%) is determined from the following formula.

Amount of Robylene Ogicide) × 100 The silicon component and molecular weight are determined by ordinary analytical methods.

*Amount of rice adhesion: Determine the adhesion side by sock lone extraction with an alcohol/penzol mixture. Extraction time...
... 5 hours * Qinji knitting property: The treated cheese is knitted on 18G sinker white circle test MAH at 1p1y, and the knitting difficulty is determined from the knitting conditions (knitting, line speed, etc.) that do not occur on the knitting machine at that time.

(Good) O-〇-1 to 1× (Poor) The water absorption length and running tension were determined according to the method described in the text.

Highly twisted plain fabric (A) with weft weft and basis weight of 100η-, polyester semi-dull SOA/4A filament,
A georgette fabric 03) with a basis weight of 80 was made by alternately inserting two 8 and Z twisted yarns of 2000 T and Al.

(A) The acrylic long fiber strong twist plain fabric was dyed in a light blue color under the following conditions using an ordinary pressure winch, and the polyester georgette fabric (B) was scoured and relaxed, then dyed using a high-pressure jet dyeing machine. The sample was dyed black at 130°C for 60 minutes. These bleached and black dyed fabrics (A), (
Make a solution of B) with a molecular weight of 15,000, a silicon component of 25 wt, and an alkali of 5 t/b, and vat it at 160°C.
It was dried. The squeezing rate at this time was approximately 90 inches for each fabric (A) and 03), and the dried fabrics had excellent performance as shown in Table 2 and a smooth texture suitable for midsummer, making them extremely commercial products. A valuable textile was obtained.

(Anti-dyeing conditions) 2) Acrylic long fiber fabric scouring Re1ax→(Washing)→Dyeing −→Washing−→Drying (B) Polyester fabric l! 1'#Kneading Re1ax −+ (Washing)→Dyeing−−→
Sowing -> Drying Table 2 Example-6 Sports socks made of nylon 6 150d/48f false twisted yarn were made and bleached using a paddle dyeing machine under the following conditions. The special silicone resin used in Example 2 was treated with 10 f/, and sports socks were obtained.

(Bleaching conditions) Scouring −−１−□□−→Bleaching−→Soaping −１１→Water washing−→Hydrophilic treatment−−→Drying

Claims (3)

[Claims] (1) A compound of the following general formula [■] with a molecular weight of 500 to 20,000, a silicon component of 60% or less, and a superposition ratio of ethylene oxide and propylene oxide satisfying the following formula [I[)] Synthetic fibers having hydrophilic properties added in an amount of 0.01 to 3% by weight. o-(c2H4o)a (csH6o)a R" (wherein R' is a lower alkyl group having 1 to 4 carbon atoms, R is a lower alkyl group having 1 to 4 carbon atoms, and R is a lower alkyl group having 1 to 4 carbon atoms.
4 lower alkylene group, R'' is hydrogen or lower alkyl group, X and b are integers of 0 or 1 or more, Y and a are integers of 1 or more) (2) The hydrophilic synthetic fiber according to claim 1, wherein the synthetic fiber is an acrylic long fiber. (3) Synthetic fiber is 500 to 2,500 to acrylic long fiber
The hydrophilic fiber according to claim 2, which is a false twisted yarn having a twist number of ci T Shio, or a false twisted yarn having an untwisted portion.