JP3277174B2 - Synthetic fiber and manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to natural Angora rabbit hair, cashmere and other animal hair textures which are excellent in water permeability, dyeing properties and texture after dyeing, and excellent in operability and spinning properties in the production of raw cotton. And a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, acrylic synthetic fibers have been recognized as fibers having a texture, gloss and excellent dyeing properties that are closest to animal hair, and have been widely used in imitation fur fields such as bores and high pile fields assuming natural fur. It is used.

[0003] Typically, the oil to be used for acrylic-based synthetic fiber use the strong ones of the creaking relatively taking into account the spinning properties, but to approximate the texture more natural animal hair, using the Siri corn oil and cationic oil There are more examples than before.
However, while cationic oils can provide flexibility,
In particular, the animal hair tone after dyeing is inferior to the slimy texture.

JP-A-60-21978 and JP-A-6-21978
The 0-209048 discloses an example in which attached to silicon corn oil on the surface of the shrinkable fibers of the pile have been described,
Decreased stability of silica corn emulsion, static electricity generation during cotton manufacturing process or spinning, the number winding to various rollers, it is difficult to obtain the operability of the production level. Also, cationic softeners, is deposited fibers Siri corn oil agent strong water repellency, there has been a problem in the adhesion of backing material due to the decrease and permeability defective dyeing when permeability when processing the high-pile product . Electrostatic to the processing step and Products there is a problem that tends to occur in more silicon cone oil. In particular, when dyeing cotton using the silicon cone based oil agent deteriorates texture washed off the oil other than silicon cone based oil agent increases the generation of static electricity, had the disadvantage that water permeability is poor.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned disadvantages of the prior art, and has been developed in view of water permeability, dyeability, texture, adhesiveness, and the like.
An object of the present invention is to provide a synthetic fiber excellent in spinnability, particularly excellent in water permeability and texture after dyeing, and a production method.

[0006]

The present invention is characterized in that the acrylic synthetic fiber contains 0.01 to 1% by weight of polyorganosiloxane and at least 0.1% by weight of polyoxyethylene alkyl urethane. And a method for producing a synthetic fiber, wherein a polyorganosiloxane and a polyoxyethylene alkyl urethane are adhered to a fiber in a gel tow state when the synthetic fiber is produced.

The acrylic synthetic fiber of the present invention comprises acrylonitrile of 40% by weight or more and other vinyl monomers 60
% By weight or less. Specific examples of the vinyl monomer include acrylic acid, methacrylic acid, and alkyl esters thereof, vinyl acetate, vinyl chloride, vinylidene chloride, sodium allyl sulfonate, sodium methallyl sulfonate, sodium vinyl sulfonate, and styrene sulfonic acid. Soda and sodium 2-acrylamido-2-methylpropanesulfonate.

The acrylonitrile copolymer component used in the present invention particularly contains a sulfonic acid group-containing monomer and has a fiber-forming ability. Examples of the sulfonic acid group-containing monomer include those obtained by appropriately combining sodium allyl sulfonate, sodium methallyl sulfonate, sodium vinyl sulfonate, sodium styrene sulfonate, sodium 2-acrylamido-2-methylpropane sulfonate, and the like.

The above-mentioned sulfonic acid group-containing monomer is an essential component for cationically dyeing an acrylic synthetic fiber as an anion seat. The amount of the sulfonic acid group-containing monomer of the acrylic synthetic fiber of the present invention is 0.5 to 5% by weight. % Is preferably due to the excess seat above the anion seat required for dyeing,
A cationic softening agent, amino-modified silicone, etc. are positively adhered and remain in the fiber. Accordingly, not only raw cotton but also a cationic softening agent, amino-modified silicone and the like are likely to remain after dyeing, so that the texture after dyeing is excellent, and when the product is manufactured, an excellent animal hair texture can be achieved. Further, the hydrophilicity of the fiber itself is increased, and the wettability at the time of dyeing can be improved.

When the content of the sulfonic acid-containing monomer is less than 0.5% by weight, the flexibility of the fiber is lacking. On the other hand, when the content exceeds 5% by weight, the hydrophilicity is too high, and the coagulation property, hot water resistance and stretchability deteriorate. In addition, since the moisture content of the gel tow before drying is too high, the drying property is deteriorated.

The polyorganosiloxane used in the present invention includes amino-modified silicone, epoxy-modified silicone, polyether-modified silicone, carbinol-modified silicone, carboxy-modified silicone, and mercapto-modified silicone. In particular, amino-modified silicone is preferable for the texture after dyeing.

[0012] Amino-modified silica cone viscosity 3000
Cst or less, especially 2000 cst or less is preferable from the point of gelation, and the amount of amino terminal groups is 0.2 to 0.6.
Amino-modified silicon cone containing by weight% is effective to obtain animal hair tone feeling.

The content of the polyorganosiloxane with respect to the acrylic synthetic fiber is 0.01 to 1% by weight based on the weight of the fiber. If the content is less than 0.01% by weight, a good animal hair feeling can be obtained. Absent. On the other hand, if the content exceeds 1% by weight, the operability such as roller wrapping during drying decreases, and the water permeability decreases, so that uniform dyeing properties cannot be obtained. Preferably 0.0
The range of 5 to 0.5% by weight is good. Particularly preferably 0.0
7 to 0.3% by weight is good.

The polyoxyethylene alkyl urethane used in the present invention is represented by the following formula.

[0015]

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In the formula, R1 represents an alkyl group, and R2 and R3 represent polyoxyethylene or H.

The carbon number of R1 is an alkyl group of C = 5 to 80, preferably C = 12 to 50, particularly preferably 16 to 40, and at least one of R2 and R3 has a molecular weight of 200.
~ 8000, preferably 500-3000 polyoxyethylene. The polyoxyethylene may be a polyoxypropylene, a block copolymer type polyether of polyoxyethylene and polyoxypropylene, or a random copolymer type polyether, particularly having a molecular weight of 500 to 300.
0 is preferable from the viewpoint of water permeability.

The above-mentioned alkyl group is preferably a long-chain one having flexibility, and an alkyl group having C = 16 to 40 is particularly preferable from the viewpoint of texture after dyeing.

Examples of the compound represented by the formula include alkyl (C40) -OCON- (POE (2000)) 2, alkyl (C12) -OCONH-POE (3000), and alkyl (C18) -OCONH-POE (2000 ). Do etc., and the like.

When the acrylic fiber is wet-spun and applied in a gel-swelled state as in the method of the present invention, the acrylic fiber is preferably left in the fiber after being dyed and has good texture after dyeing and washing durability. The content of the polyoxyethylene alkyl urethane with respect to the acrylic synthetic fiber is at least 0.1% by weight, and if the content is less than 0.1% by weight, the generation of static electricity in the card process is increased, and the amount of the oil agent adhered is reduced. Despite this, the water permeability is reduced, and the fiber becomes difficult to dye. Preferably, the range is 0.1 to 1% by weight.

As the amount of polyorganosiloxane increases, the antistatic property becomes insufficient, and the fiber tow disperses in the drying and densification step, causing troubles caused by sticking to the roller. The ratio of polyorganosiloxane to polyoxyethylene alkyl urethane is 0.5 to 2.5 parts by weight of polyoxyethylene alkyl urethane, more preferably 0.8 to 2.2 parts by weight, particularly 1 to 1 part by weight of polyorganosiloxane. 2 parts by weight is preferred from the viewpoints of dyeability, texture after dyeing, suppression of static electricity and water permeability.

As the softener used in the present invention, any of nonionic and cationic softeners can be used, but a cationic softener which tends to leave a feeling after dyeing is preferable. Cationic softeners include polyamines such as polyoxyethylene polyamines, polyoxyethylene polyamine polyamides, polyoxyethylene alkyl polyamine derivatives, aliphatic amine salts and their quaternary ammonium salts, aromatic quaternary ammonium salts, mono and Cationic surfactants such as condensates of diacyloyl polyethylenepolyamide and urea, and their salts of reaction with epichlorohydrin.

The polyoxyethylene may be polyoxypropylene, a block copolymer type polyether of polyoxyethylene and polyoxypropylene, or a random copolymer type polyether. The molecular weight is preferably from 200 to 8000, and particularly preferably the molecular weight is 500-3000 is preferable from water permeability. The above-mentioned alkyl group is preferably a long-chain one having flexibility, more preferably an alkyl group having C = 5 to 80, and an alkyl group having C = 12 to 50 is particularly preferable from the viewpoint of texture after dyeing.

The content of the cationic softener based on the acrylic synthetic fibers is at least 0.1% by weight,
When the content is 0.1% by weight or more, good flexibility can be imparted.
If the amount is less than 10% by weight, good animal hair texture cannot be obtained due to lack of fiber flexibility. Preferably, the range is 0.1 to 1% by weight.

The ratio of the cationic softening agent to the polyorganosiloxane is preferably 0.5 to 4 parts by weight, particularly 0.8 to 3 parts by weight, based on 1 part by weight of the cationic softening agent. If the component ratio is too large, the water repellency is so strong that the uniform dyeing property is lowered. If the component ratio is too small, the texture after dyeing becomes insufficient.

The component ratio between the cationic softener and the polyoxyethylene alkyl urethane is 0.5 to 2 parts by weight of the polyoxyethylene alkyl urethane per 1 part by weight of the cationic softener.
A weight part, especially 0.7-1.5 weight part is preferable from a dyeing property, the texture after dyeing, static electricity suppression, and water permeability. When the component ratio of the cationic softening agent is too large, static electricity is generated so much that the tow in the pre-drying step is so large that it causes winding trouble, and when the polyoxyethylene alkyl urethane is too large, the feeling of the softening agent becomes insufficient.

The spinning may be carried out in the same manner as in the case of ordinary acrylic synthetic fibers. The fibers are passed through several baths, stretched and washed with water to obtain gel-swelled fibers. The fiber cross section may be any cross section such as a round shape, a flat shape, and other irregular shapes.

The method of the present invention applies the above-mentioned emulsion containing polyorganosiloxane and polyoxyethylene alkyl urethane to the fiber thus obtained, followed by drying and densification. At that time, a roller dryer having a surface temperature of 120 to 160 ° C and / or a dry heat of 120 to 180 ° C
It is preferable to perform treatment using a hot air dryer. If the treatment temperature is lower than 120 ° C., the fibers are not densified, and the transparency is lowered and the dyeing is uneven, which is not preferable. On the other hand, 180 ° C
Exceeding this is not preferable in terms of fiber coloring and embrittlement.

If necessary, an oil agent and a softening agent containing an antistatic component as a main component are applied before or after drying, and then post-treatments such as crimping and cutting are performed. Examples of antistatic oil components include cationic surfactants such as higher amine salts and quaternary ammonium salts, anionic surfactants such as phosphate esters and sulfonates, and nonionic surfactants such as polyhydric alcohols. However, a cationic antistatic oil agent is particularly preferred.

In the present invention, it is possible to add a known additive to the fiber. For example, specific additives include a flame retardant, a light stabilizer, an ultraviolet absorber, a pigment, an antistatic agent and the like.

[0031]

The production method of the present invention is an industrially easy and inexpensive method for producing an acrylic synthetic fiber having a soft feeling of animal hair excellent in both spinnability and durability. Also, when the fiber obtained by the present invention is used for napped products such as high piles and bore blankets and clothing, the texture is very close to that of natural rabbit hair and cashmere, and the texture and water permeability after dyeing. Remains.

[0032]

The present invention will be specifically described below with reference to examples. In the examples, “%” means “% by weight”.

[0033] The oil adhesion amount, reflux using a Soxhlet extractor, obtained by extraction, for Si deposition amount, was prepared by changing the advance silicon cone density with a fluorescent X-ray analyzer 3270 type manufactured by Rigaku Corporation It was determined from a calibration curve. The static electricity in the card is controlled under a humidity of 20 ° C x 60% RH.
The measurement was performed with a current collector potential measuring device by Kasuga Electric Co., Ltd. under the conditions of a doffer rotation speed of 25 rpm.

The texture of the raw cotton and after dyeing was determined by five experts in three stages of の (very good), （(good), and × (poor). The dyeing conditions at that time were using a cationic dye at a bath ratio of 1:50 at 100 ° C. for 60 minutes.

The water permeability of raw cotton is as follows.
The time from floating in water at about 20 ° C. until sinking into a ball of cm was measured (average value of n = 3). （(Very good: less than 1 minute), （(good: 1 to 30 minutes), × (bad: no sink in 30 minutes). Example 1
-5, Comparative Examples 1-3 Acrylonitrile (AN) / vinylidene chloride (VDC) / 2-acrylamido-2-methylpropanesulfonic acid sodium (SAM) = 56/41 /
3 was dissolved in dimethylformamide (DMF) so as to have a polymer concentration of 27% in DMF / water = 58/42 at a temperature of 58/42 at 20 ° C. through a die with a hole of 0.055 mmφ. The fiber was spun into a bath, stretched 6 times, and washed with water to obtain a gel-swelled fiber.
As shown in Table 1, the fibers obtained by the above method were polyoxyethylene alkyl urethane, polyorganosiloxane,
A cationic softening agent and an antistatic agent are applied, and a surface temperature of 150
The mixture was densified by a roller dryer at a temperature of ° C. Thereafter, crimping and cutting were performed to obtain a 3d × 51 mm acrylic fiber for evaluation. The evaluation results are also shown in Table 1.

[0036]

[Table 1]

Examples 6-9, Comparative Examples 4-5 AN / methyl acrylate (MA) /SAM=89.9/
An acrylic copolymer composed of 7.6 / 2.5 was dissolved in DMF so as to have a polymer concentration of 25% to prepare a spinning stock solution. Then, 1.2% by weight of titanium oxide was added as a DMF-dispersed liquid to the spinning dope to obtain 0.451 mm × 0.038 m
The fiber was spun into a coagulation bath of DMF / water = 55/45, 21 ° C. through a flat die having 25,000 holes and stretched 5.5 times, and then washed with water to obtain a gel-swelled fiber. Polyoxyethylene alkyl urethane, polyorganosiloxane, cationic softening agent and antistatic agent were applied to the fiber obtained by the above method as shown in Table 2, and the fiber was densified by a roller dryer having a surface temperature of 150 ° C. Thereafter, crimping and cutting were performed to obtain flat fibers of 10 d × 51 mm. Table 2 also shows the evaluation results.

[0038]

[Table 2]

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-21769 (JP, A) JP-A-2000-64873 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06M 13/00-15/72 D01F 6/54 D01F 11/06

Claims (2)

(57) [Claims] 1. A synthetic fiber comprising 0.01 to 1% by weight of a polyorganosiloxane and at least 0.1% by weight of a polyoxyethylene alkyl urethane based on an acrylic synthetic fiber. 2. A method for producing a synthetic fiber, comprising the steps of: adhering a polyorganosiloxane and a polyoxyethylene alkyl urethane to a fiber in a gel tow state when producing a synthetic fiber.