JPS58109687A - Synthetic fiber having hydrophilicity - 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 a synthetic fiber having excellent hydrophilicity and antistatic properties.

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

For example, clothing such as shirts and slacks that are washable and easy to care for, making use of hydrophobicity, which is a characteristic of synthetic fibers, is a classic example. It has advantages such as color development, color fastness, and high strength.

However, while it has the above-mentioned characteristics, it also has some drawbacks [for example, it has almost no sweat absorbing effect on clothing, and when the hem is tied around the hem due to static electricity being charged while wearing it, there are some drawbacks. There is an occurrence of

In order to improve these major drawbacks of synthetic fibers, the present invention imparts dihydric properties and antistatic properties at the same time.To achieve this, the following special silicon compounds and synthetic fibers under specific conditions are used. It is an extremely excellent product whose effects are clearly demonstrated by the treatment with the cationic softening and smoothing agent. That is, the present invention has a molecular weight of 500 to 20,000°, a silicon component of 60% by weight or less, and a weight composition ratio of ethylene oxide and propylene oxide of the following general formula [1
Mixing weight ratio of compound [1) and El) satisfying 1 [11
Mixing weight ratio CB of the patterned compound [A] in which /(1) is θ ~ 20, a cationic surfactant made of polyamine and/or polyamide, and a softening and smoothing agent CB mainly composed of paraffin etc.) /[A] is 0.1 to 2.5, and the mixture is imparted with a weight of 0.05 to 2.5, and has hydrophilic properties.

”-〇-(CJ'40)a(CsHaO)6 R Conventional,
Methods for making synthetic fibers hydrophilic include modification at the manufacturing stage and modification treatment at the post-processing stage. For example, modification methods at the manufacturing stage include a method of modifying the polymer itself by copolymerizing it with a functional monomer having an alkylene oxide group, and a method of blending and spinning polyethylene oxide or other hydrophilic substances during spinning. Generally known post-processing techniques include a method in which hydroxyl groups and carboxyl groups are generated by hydrolysis or alkaline hydrolysis pressure, and a method in which the material is treated with a processing agent whose main component is an activator containing ethylene oxide or a derivative thereof.

However, these methods of improving fiber matrices require large-scale changes in manufacturing conditions, resulting in increased costs, and changes in post-processing conditions for standard yarns.Additionally, methods for making hydrophilic fibers through post-processing are not suitable for knitted fabrics. Processing in the form of threads is common, but processing in the form of threads is rarely put into practical use due to the extremely poor traceability (smoothness of threads, etc.) of the subsequent processing steps, that is, the knitting process. is the current situation.

On the other hand, in the present invention, it is possible to use ordinary yarn as it is and post-process it. For example, after finishing cheese dyeing, the special silicon compound [1) and [Dan] can be added in the mixed weight ratio as described above. [River]/Cationic softening and smoothing agent C consisting of the mixture (A) in which [1) is 0 to 20 and a specific composition
By mixing B) with a mixing weight ratio of CB)/[A) of O, 1 to 2.5 and giving the mixture a weight ratio of 0.05 to 2.5, extremely excellent hydrophilic performance and processing process passability can be achieved. This is an innovative method that allows you to obtain

The present invention treats ordinary raw yarn or processed yarn to make it a special mold that has no problems with hydrophilicity and subsequent processability. However, when this treatment agent is used on a fabric such as a knitted fabric, However, sufficient hydrophilic performance can be obtained.

In addition, synthetic fibers such as nylon, polyester, and acrylic fibers can have the same hydrophilic properties when treated, and blends, twists, and products of these fibers containing natural fibers also have exactly the same hydrophilic properties. can be granted. That is, what is important in the present invention is that the mixing weight ratio [B]/[A] of the aforementioned special silicon compound (mixture [mu] of 13 and (1) and specific cationic softening and smoothing agent CB) is 0.1.
0.05-2.5% by weight relative to the fiber in a proportion of ~2.5
The details of the present invention will be described below, focusing on examples using acrylic fibers or acrylic long fibers.

As mentioned above, the special silicon compound CA), which is one of the processing agents used in the present invention, is a component that imparts hydrophilicity, that is, an alkylene oxide component consisting of ethylene oxide and propylene oxide, and a component that prevents a decrease in smoothness. , that is, a copolymer consisting of silicon ash.

Traditionally, wax/based waxes and silicone resins have been used as means to reduce the coefficient of friction of threads against metals and the coefficient of dynamic friction between threads (although they all exhibit water repellency and are effective at improving smoothness). Simply mixing a hydrophilic activator or oil such as ethylene oxide with a hydrophilic agent will result in poor hydrophilicity, smoothness, and grain practical performance (e.g. color fastness,
It was impossible to simultaneously satisfy the following problems (skin disorders, etc.). In view of this current situation, the inventors of the present invention have conducted extensive studies and found that
Hydrophilic properties can be achieved by using (special silicone compound CA) as mentioned above and a specific cationic softening and smoothing agent under certain conditions.

The present invention was achieved by successfully developing yarns and products that not only have good passability through processing steps but also have an even better soft texture.

The necessary conditions for the special silicone compound (A), which is one of the processing agents used in the present invention, are as described above.
0000, the silicon component is 60% by weight or less, and the weight composition ratio of ethylene oxide and propylene oxide is as described above [as shown in equation 11, the amount of ethylene oxide in the total alkylene oxide or at least 1O weight upwind is It is necessary that the mixture weight ratio [11/[1] is 0 to 20.

The reason for this is that when the molecular weight exceeds 20,000, the form at room temperature becomes paste-like or solid.
Since the solubility in water decreases, uniform adhesion becomes difficult, and it is not practical in terms of handling problems. 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 reduce color fastness and cause problems such as itching and rash on the human body. There is a concern that skin disorders may occur.

The weight composition ratio of ethylene oxide and propylene oxide increases as the amount of propylene oxide increases, resulting in a high molecular weight region (ru- and l!#), which decreases the solubility in water and makes it difficult to apply uniformly. It is also unfavorable from a work standpoint.

Next, regarding silicone components, dimethylpolysiloxane and methylhytrodienepolysiloxane have traditionally been used to improve the smoothness of yarns, but as the ratio of these silicone components increases, the smoothness of yarns improves, which improves knitting properties. This reduces troubles during sewing and sewing, and gives very favorable results in terms of process passability. 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.
Therefore, the silicon component must not exceed 60% by weight based on the total weight.

In addition, the special silicon compound [A) used in the present invention has the above-mentioned general formula (1) and (mixing weight ratio CI of (11))/[I]
By mixing K in a range of 0 to 20, the overall hydrophilic performance etc. can be stabilized. And the mixing weight ratio [11)/(1
) is 0 to 20. For example, if 1 weight of the processing agent with the structural formula (1) is attached, then the processing agent with the structural formula of [Ta] is 0 to 20 weight. It means attached. However, the amount of adhesion in the present invention is O,1
〜2.5% by weight is required, so in this case it is actually 0〜
This means that 1.5% by weight of the processing agent having the structural formula of [mouse] is attached. Furthermore, when the processing agent (1) is 0.1% by weight, it means that the processing agent (El) is in the range of 0 to 2% by weight. Since both of the processing agents El) and CI) do not have selective adsorption performance, the adhesion ratio can be controlled by controlling the blending ratio of the processing bath concentration.

Next, the cationic softening and smoothing agent [B], which is another processing agent used in the present invention, will be described.

Originally, textile products treated with a cationic softening and smoothing agent (B) exhibit very strong water repellency. However, by using the above-mentioned special silicon compound CA), its strong water repellency disappears, and it becomes possible to impart the desired hydrophilicity (furthermore, it is impossible to obtain it with each treatment agent alone). It is possible to obtain an extremely good product feel that would otherwise be impossible.

Softening and smoothing agents generally have a softening agent that adjusts the texture of the product and a smoothing agent that improves the passability of the processing process as the main ingredients, as well as an antistatic agent and a homogeneous emulsion and dispersion of these ingredients. It is composed of an emulsifier for the purpose of

As these components, surfactants having various structural formulas and derivatives thereof are often used, and a large number of types are known.

The softening and smoothing agent used in the present invention is mainly composed of a polyamide-based and/or polyamine-based cationic surfactant as a softening agent component, and a paraffin-based wax such as polyolefin or polyethylene as a smoothing agent component. It may also contain emulsifiers, antistatic agents, etc.

What is particularly important among these is that the softener component must have a cationic surfactant made of polyamide, polyamine, and their derivatives and paraffin wax uniformly emulsified and dispersed, and the ratio must be particularly limited. Generally speaking, it is preferable to use one containing 4 to 5 times as much paraffin wax as the cationic surfactant.

For example, if the softener component is other than polyamide-based and borianne-based, jl! When a quaternary ammonium salt type or the like is used, even if the above-mentioned special silicon compound (A) is used in combination, the good hydrophilicity aimed at in the present invention cannot be obtained, although the reason is not clear.

The presence of paraffin wax such as polyethylene or polyolefin is extremely important for the passability of the product through the processing process after passing through the processing agent. It supplements the smoothness of yarns or knitted fabrics, etc., where the performance of the special silicone compound [A] alone is insufficient.

The mixing ratio of the special silicon compound (A) used in the present invention and the specific cationic softening and smoothing agent CB) has an important meaning with respect to the desired hydrophilic performance and process passability. That is, the mixing ratio of the specific cationic softening and smoothing agent [B) to the special silicon compound [A'] is extremely large (
If this happens, the treated product will be poor in water repellency or the desired hydrophilic performance, and conversely, if the proportion of the cationic softener is extremely small, the performance will be almost the same as treated with a special silicone compound alone, which is the objective of the present invention. In order to obtain this effect, it is necessary that the mixing weight ratio (B)/[A) of both treatment agents attached to the fibers is 0.1 to 2.5.

Originally, when acrylic fibers were repeatedly treated with a softener containing a cationic surfactant or the like for a long period of time, some selective adsorption occurred, and a corresponding change in texture was observed. However, in order to obtain the desired performance in the present invention, the performance and adhesion to fiber mixing weight ratio CB)/[A] have a certain range, so the mixing ratio of the treatment bath concentration is regulated as an exception for extreme usage conditions. By doing so, it is possible to approximately regulate the adhesion mixing weight ratio [B]/[A] to the fibers. In the present invention, the mixing weight ratio [B]/[A] is 0.1 to 2.5, which means that, for example, when the silicon compound (A) is 1% by weight, the cationic softening and smoothing agent [B] is 0.1 to 2.5. 2.5% by weight
This means that the total amount of fibers attached is 1.1.
~3% by weight.

The mixed coating weight of both processing agents used in the present invention is generally 0.0
It needs to be in the range of 5 to 2.5% by weight; if it is too small, the desired performance will not be obtained, and if it is too large, it will cause problems in the processing process and the product will have a waxy texture. It becomes a strong impression and lacks practicality. Furthermore, although the appropriate amount varies depending on the type 1IIVC of the synthetic fiber to be treated, in the case of final finishing of yarn-dyed fabrics such as jersey and woven fabrics, a coating amount of about 0.1 to 0.5% by weight is appropriate. In the case of yarn processing such as cheese dyeing, it is preferably 0.3 to 265% by weight considering the ease of passing through subsequent processes, and in the case of worsted acrylic fiber yarn, it is 0.2 to 1% by weight, false twisting of polyester, nylon/ In the case of cheese dyeing processed yarn, 0.3 to 1.5% by weight is required. 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 the knitting properties of cheese-dyed yarns are extremely poor. (In the case of ordinary false-twisted yarn made of this acrylic long fiber, the appropriate adhesion amount is 0.1 to 2.
0% by weight is preferred.

For example, 0.1 for highly twisted yarns and special false twisted yarns with continuous untwisted parts for use in acrylic long fiber woven fabrics.
The optimum point is in the -1% by weight region, and products made from georgette fabrics and sinker jerseys using these yarns have a feel and texture suitable for midsummer, as well as extremely sweat-absorbent and electrically conductive properties. A product with high commercial value was obtained. In addition, it is comfortable to wear while wearing, as it is made of saran like traditional linen products, and it is possible to obtain a value-added product that dries quickly even after absorbing sweat, which makes it a good choice.
It can be easily applied. In addition, the number of twists is 500 T/
In the case of ordinary raw silk or ordinary processed yarn of less than M, water absorption and quick drying properties are slightly inferior. On the other hand, the number of twists is 2500 T/
If it exceeds M, there is a problem in yarn strength and water absorption tends to be poor.

The hydrophilicity, smoothness, etc. of the product obtained by the present invention as described above can be confirmed by the following method. Hydrophilicity can be measured using the ``water absorption length'' (bisic 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 a product and measuring the time it takes for the water droplets to disappear. The details of this measurement method are carried out in accordance with JIS L-1018.
The water absorption length in 0 minutes is 2 to 3 meters, whereas the present invention shows a performance of 80 to 90 meters, and the water droplet disappearance rate is 60 seconds or more for the conventional product, whereas the present product has a water absorption length of 2 to 3 minutes. 0
It disappears in seconds, in other words, in an instant.

The smoothness of the yarn is examined using a knitting property measuring machine manufactured by Katai Keiki Co., Ltd. The smoothness of the yarn and pair of knitting needles is examined by running the yarn at a constant speed and measuring the tension at that time. The traps can be easily compared.

In the case of the conventional false-twisted acrylic long fiber yarn 150D yarn dyed yarn, the tension is about 307' in 50 ml/minute, but in the case of the present invention, the tension is in the range of 30 to 33 P, and depending on the conditions, it is a particular problem in practical use. do not become.

The method for measuring color fastness is JIS method (L-0846
The present invention will be described below with reference to Examples, in which the items of fastness to water, friction, light, and sweat are mainly measured in accordance with the following.

Example 1 Acrylic long fiber 1 Silveron (manufactured by Mitsubishi Rayon Co., Ltd. ply) 150 d/60 f continuous untwisted false twisted processed yarn l kl rolled cheese was dyed at once under the following conditions.

This cheese was treated with a processing agent under each condition as shown in Table 1 using an IQ type dyeing machine, and then dehydrated and dried to compare the performance and knitting properties of each treatment system.

On the other hand, Comparative Example -4 has slightly good knitting performance but very poor hydrophilicity, and the conventional condition of No. 5 has good knitting performance but almost no hydrophilicity. It is clear that there is no such thing.

(Dyeing conditions) →Washing -1→ Processing Drying* Nos. 1 to 4
A silicon-based compound containing +r ethylene/oxide and propylene/oxide is used, and the ethylene oxide (% by weight) is determined from the following formula. Incidentally, the molecular weight and silicon component are determined by ordinary analytical methods.

** Amount of adhesion: The amount of adhesion was determined by Soxhlet extraction (5 hours) with an alcohol/penzol mixture and is expressed as the adhesion rate per fiber weight.

*** Knitting property: The treated cheese is knitted using a 18G sinker test knitting machine Klpty, and the knitting difficulty is determined based on the knitting conditions (knitting speed, etc. for the 9th time) that do not cause knitting damage. .

(Good) ◎-〇-81× (Poor) Example 2 Raw yarn ply of acrylic long fibers) 180 to 75d/40f
07/M 2-twist yarn is inserted in the warp and weft, and the fabric weight is 100 P/
nl strong twist plain fabric bi) and polyester semi-dual 50d/
A georgette fabric (b) with a basis weight of 80 P/nl was made by alternately inserting two S and 2-twist yarns of 48 f, l 800 T/M. (A) The acrylic long-fiber strong plain fabric is dyed in a light blue color under the following conditions using a normal pressure winch.The polyester georgette fabric (B) is scoured and relaxed, and then dyed using a high-pressure jet dyeing machine. The sample was dyed black at 130°C for 60 minutes. Each of the fabrics dyed in light blue and black (H) and (B) is a compound of the general formula CD of the special silicon compound [M] shown in the text, with a molecular weight of 15,000,
Similar to 3P/1, a special silicon compound in which the silicon component is 30% by weight and the composition ratio of ethylene oxide in the alcohol solution is 30%, it is a compound of general formula [11] and has a molecular weight of s o o o. , Contains 4 cricon ingredients
A mixed solution of 3 tμ of a special silicon compound in which the composition ratio of ethylene oxide in alkylene oxide is SOS (mixed weight ratio [ll)/(I) = 1
．． To 0), add 10 P/13 of cationic softening and smoothing agent CB), which has polyamide cross-linked with urea as a softening component and polyethylene as a smoothing component, for padding (use weight ratio CB)
/(A) = 1.7) L, dried at 130°C. In addition, the drawing ratio at this time is approximately 90 for each fabric (k) and (b).
The dried fabric had the excellent performance shown in Table 3 and had a slightly soft Saran feel suitable for mid-summer, and a fabric with extremely high commercial value was obtained.

(Anti-dyeing conditions) What) Acrylic long fiber fabric scouring R・lax → (Washing) → Dyeing → Washing → Drying (B)
Polyester fabric scouring Re1ax → (Washing) → Dyeing □ → Soaping -- → Drying 3rd table Sports socks using false twisted yarn of nylon 6 150d/48f were made and bleached using a dollar dyeing machine under the following conditions. did.

These sports socks have a weight ratio of the solution containing the special silicone compound [A) and the cationic softening and smoothing agent [B] used in Example 2 (CB')/(g is 0.5, and the total solution concentration is 5/ 24 and dehydrated and dried.The socks thus obtained were sports socks of very high commercial value.

(Exposure conditions) → Soaping → Washing → Hydrophilic treatment → Drying Procedural amendment Showa SX March '23 II.

Commissioner of the Japan Patent Office Kazuo Wakasugi 1, Indication of the case, Patent Application No. 1, 1973, Stsz No. 2, Name of the invention, Synthetic fibers having hydrophilic properties 3, Person making the amendment Relationship to the case Patent applicant: 2-chome Kyobashi, Chuo-ku, Tokyo No. 3-19 (603) Mitsubishi Rayon Wire System Company President Osamu Kanazawa 34, Agent 2-3-19-5 Kyobashi, Chuo-ku, Tokyo, Date of amendment order l) General formula on the bottom line of page D ( If) is corrected as follows:
Yusuru□ ・・・・・・(II) (1) Molecular deception! OO~-〇〇〇〇、The silicone component is t
oHM% or less, the Am ratio of ethylene oxide and propylene oxide satisfies the following general formula (III), and the mixture ratio (II)/CI) of compounds CI) and (II) is θ to -〇 [ Mixing ratio CB) of a cationic thread surfactant made of polyamino and/or polyamide, and a softening and smoothing agent CB whose main component is paraffin etc.
)/[A] is a/~Y until the mixed compound is aOZ~2S
Synthetic fibers with hydrophilic properties imparted with **% Or-? (C2H40), (CmHiO)b R...
[Claim 1 in which the light (-) synthetic fiber is an acrylic long fiber
2fI Synthetic fiber having hydrophilic properties as described in item 1.

(3) For acrylic long fibers! r00-J! f
00 T/M f)m& or a false twisted yarn having an untwisted portion, the fiber has hydrophilic properties as claimed in claim 1.

Claims (1)

[Scope of Claims] (1) Molecular weight is 500 to 20,000. Silicone component is 6
A compound CI whose weight ratio of ethylene oxide Φ side and propylene oxide satisfies the following general formula
) and [field] mixing weight ratio [11)/(1') KaO ~ 2
0 Teal IHi compound [A] Mixing weight ratio of cationic surfactant made of topolyamine and/or polyamide and softening and smoothing agent CB) mainly composed of paraffin etc. [B
]/(A) is 0.1 to 2.5 and the mixed compound is 0.05
~2.5% by weight of synthetic fibers having hydrophilic properties. R”0-(CtHaO), (CmH@0)HR(2)
Claim 1 in which the synthetic fiber is an acrylic long fiber
Synthetic fibers having hydrophilic properties as described in Section 1. (3) 500-2500 T/M for acrylic long fibers
The synthetic fiber having hydrophilic properties as claimed in claim 2, which is a strongly twisted yarn having a twist number of 1, or a false twisted yarn having an untwisted portion.