JPS6021978A - Shrinkable fiber for pile - 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 shrinkable fiber for piles that has a natural fur-like appearance and feel (drapeability), and more specifically, the present invention relates to a shrinkable fiber for piles that has a natural fur-like appearance and feel (drapeability), and more specifically, the present invention relates to a shrinkable fiber for piles that has a natural fur-like appearance and feel (drapeability). The present invention relates to a shrinkable fiber for piles in which the coefficient of static friction between fibers after shrinkage is adjusted to a constant value of 1 or less in order to provide such characteristics.

Conventionally, among pile products, what is called artificial fur has been made with spinning fibers in the pile part in order to approximate the nap of natural fur.
Considering the raw material, we use a blend of shrinkable fibers and non-shrinkable fibers that are relatively squeaky or rough, giving it a down-like appearance.
It is normal to express a part of the guard hair as contracted aB, and a part of the guard hair as non-contracted I& At that time, the piles using the conventional acrylic fibers shrink as the shrinkable fibers wrap around the non-shrinkable fibers during the shrinkage process, and the fibers are strongly entangled during the crimping and stretching of the fibers in the subsequent polylashing process, so the pile The texture of the area close to the surface is squeaky, rough, and harsh (and the drapability of the pile fabric is greatly lacking, and when used for clothing, it does not conform to the body and has an unnatural shape, making it difficult to match natural fur). In comparison, it is severely inferior.

In view of these circumstances, the present inventors investigated the causes of these phenomena, and as a result, they focused on the entanglement resistance between the fibers before the shrink-treated polylacier, which is thought to be the most important reason, and succeeded in solving the problem. This is what I did. Specifically, when the coefficient of static friction between contracted fibers is small, the pile ff
The resistance to entanglement between fibers during shrink processing after Jiit weaving is reduced, making it easier to crimp and unroll (poly lasher finish) in the subsequent poly tsuya processing, resulting in an excellent appearance and less entanglement between fibers in the pile after shrinkage. Therefore, it was discovered that even when the pile fabric is folded, it feels soft, and that a rich pile can be obtained for drapes, leading to the present invention.

That is, the present study was conducted on a shrinkable fiber having a shrinkage rate of 15% or more, which is made by applying organopolysiloxane having an amino group on the fiber surface, and the coefficient of static friction between the fibers after shrinkage is Q, It contains shrinkable pile fibers having a weight of 280 or less.

As the organopolysiloxane having an amino group used in this study, for example, one molecule of organopolysiloxane has at least one amine group in the side chain and/or the terminal, and the viscosity of the polymer made from the organopolysiloxane is At 25°C, it is preferably 10 to 500,000 cst, more preferably 50 to 5,000 cst, and the amine equivalent is preferably 400 to 10,000. A further preferred number is 600 to 5,000, but is not limited thereto.

The type of amino group may be any of primary amine, secondary amine, tertiary amine, quaternary ammonium, etc., but it is preferable to have a primary amine and/or a secondary amine. . In addition, the organopolysiloxane described above can be used not only alone but also in combination with other organopolysiloxanes such as dimethylpolysiloxane, dimethylhydrone-embolisiloxane, epoxy-modified polysiloxane, and polyether-modified polysiloxane. A species or a combination of two or more kinds, and/or a combination of 1m or two or more kinds of aminorane, epoxysilane, mercaptosilane, etc., and/or a silane coupling agent may be used in combination.

The amino group-containing organopolysiloxane is about 1O to
An emulsion obtained by emulsification and dispersion using 50ii% of a polyether nonionic surfactant, especially one having an I-I L B of 12 to 15, or a polymer emulsion obtained by carrying out emulsion polymerization from the beginning of the polymerization. Good too.

The amount of the organopolysiloxane applied to the fibers is 0.008 to 0.7% by weight, preferably 0.03 to 0.5% by weight in terms of silicon atoms, but the amount of the applied shrinkable fiber is It is better to appropriately set the coefficient of static friction between fibers after shrinkage. Generally, the amount of adhesion is 0.00 in terms of silicon atoms.
If it is less than 8% by weight, the coefficient of static friction between fibers will increase and the entanglement of the fibers will increase, making it difficult to finish with a polyurethane finish, and if it exceeds 0.7% by weight, the fibers will not aggregate easily when made into a pile. This is not a good idea as it becomes noticeable and spoils the appearance. In other words, if the coefficient of static friction between the fibers after shrinkage is 0.230 or less, the entanglement between the fibers after shrinkage will be small, making polishing easier and creating a pile with a good appearance. In other words, the amount of attached organopolysiloxane is 0 in terms of silicon atoms.
．． If it exceeds 7 JIt%, the polylasha finish is good, but the piles and parts tend to aggregate and form tufts, spoiling the appearance.

In order to obtain a pile shrinkable fiber to which the organopolysiloxane having the 7-mino group is attached, it is preferable to treat the shrinkable fiber with an emulsion of the organopolysiloxane during the manufacturing process of the shrinkable fiber. It is also possible to treat the stable with an emulsion of the organopolysiloxane. For example, in the wet spinning method, the swollen fibers are subjected to an emulsion treatment of the organopolysiloxane before entering the drying process, dried, heat treated, and then stretched to give shrinkage properties; There are methods such as applying an emulsion treatment of the organopolysiloxane to the heat-treated fibers, drying them, and stretching them after the heat treatment to impart shrinkage properties. It is preferable that it be as low as 0.280 or less. The same applies to the dry spinning method, and the organopolysiloxane emulsion is used in combination with a process stabilizing oil agent or alone for drying and heat treatment for shrinkable fibers made of fibers spun by a conventional method. It is preferable to do so. On the other hand, when using a shrinkable stable, it may be treated with an emulsion of the organopolysiloxane, or if necessary, after removing the oil on the stable surface, the organopolysiloxane may be treated with an emulsion of the organopolysiloxane. It may also be treated with a siloxane solution. In this case, the fiber-to-fiber static friction coefficient of the treated shrinkable fibers is higher than that of the fibers that have been subjected to shrinkage processing and heat treatment. Therefore, in the present invention, the static friction coefficient between fibers is important in the shrink fiber sulfur after shrinkage, and its value is 9.23.
It needs to be 0 or less.

The shrinkable fiber used in this study is preferably an acrylic fiber, and its composition is 30% by weight of acrylonitrile.
A copolymer consisting of the above, obtained by copolymerization of acrylonitrile and one or more polymerizable monoolefinic monomers. Suitable monoolefinic monomers include, for example, Nisder acrylate, methacrylic ester, acrylic amide, methacrylic amide or their mono- and dialkyl substituted products, acrylic acid, methacrylic acid, itaconic acid, vinyl chloride, Vinylidene chloride, vinyl esters such as vinyl acetate, vinylpyrrolidone, vinylpyridine and alkyl substituted products thereof,
Examples thereof include styrene sulfonic acid, allyl sulfonic acid, mecryl sulfonic acid, methacryloyloxybenzenesulfonic acid, methacryloyloxypropylsulfonic acid, or metal salts fa'i and amine salts thereof. In the present study, there is no need to be very strict regarding the copolymerizable monomers, and any conventional modiolefinically unsaturated compounds that can be copolymerized with acrylonitrile can be used.

The above-mentioned acrylic copolymer can be obtained by a conventional vinyl polymerization method using a known compound as a polymerization initiator, such as a peroxide compound, an azo thread compound, or various redox thread compounds.

This acrylic copolymer is dissolved in an organic bath agent such as acetone, acetonitrile, dimethylformamide, dimethylacetamide, dimethyl sulfoxide, or an inorganic solvent such as zinc chloride, nitric acid, rhodan salt to prepare a spinning stock solution. . Inorganic and/or pigments such as oxide powder or coloring pigments
Alternatively, it is also possible to use organic pigments, stabilizers that are effective in preventing rust, preventing coloration, and improving light resistance, etc., as long as they do not interfere with spinning.

This spinning dope is spun from a nozzle using a conventional wet or dry spinning method, and then stretched and dried.

Furthermore, stretching and heat treatment may be performed as necessary. The obtained yarn is stretched 1.3 to 4.0 times at 70 to 140°C to obtain a shrinkable fiber having a shrinkage rate of 15% or more.

When using this shrinkable fiber for the pile, the length of the fiber used for the pile usually depends on the stability of the stable.
The amount is about 95% by weight, and the rest is mixed with non-shrinkable fibers. If a pile is made using a shrinkable fiber with a shrinkage rate of less than 15%, it is difficult to obtain a guard hair like natural fur and a stepped pile like a down hair, so in the present invention, the shrinkage rate is 15% or more This is very important.

When piles are made using the shrinkable fibers for piles obtained by the method of the present invention, unlike conventional shrinkable fibers, they are excellent in both appearance and drape even when used at a high mixing ratio. When using conventional shrinkable fibers, the pile blending ratio is at most 30% by weight, and if the blending ratio is higher than that, the drape is poor, and the crimp in the shrinkable pile part does not stretch well, even though it looks similar to natural fur. You can only get something that doesn't look like it. Therefore, by using the shrinkable fiber for piles developed by this research, product planning becomes more flexible. For example, it is possible to create a mink-like pile by using a high blending ratio of shrinkable fibers, which were used for yarn turns and threads, and because it is possible to use shrinkable fibers with a high blending ratio, two or more types of shrinkable fibers with different shrinkage ratios can be used. It can also be used to create multi-level piles.

Hereinafter, prior to describing Examples, a method for evaluating the performance of the test fibers will be described in detail.

(1) Amount of silicon deposited: Precisely weigh out the amount of shrinkable fiber as approximately 0.59 absolute dry weight, and place it in a platinum crucible at +1. The sample was embedded in an alkaline agent consisting of sodium carbonate and potassium carbonate, and heated on an electric heater to gradually carbonize it. Then in an electric furnace for 350
Thermal decomposition was carried out at ~500°C, followed by ignition with a gas burner to carry out alkali melting. After cooling, distilled water was added to filter the unlysed material, and distilled water was passed through the filter to adjust the filtrate to 100 g. The filtrate was measured by atomic absorption spectrometry (Japan Charel Atsushi AA-780MN).

On the other hand, a mixture of several types of organopolysiloxane fibers with known adhesion amounts treated with alkaline melting in the same manner as above was dissolved in water and filtered to obtain a filtrate, and a calibration curve was determined by atomic absorption spectrometry. From the obtained calibration curve, the amount of organopolysiloxane deposited on the shrinkable fiber was determined and quantified.

(2) Static friction coefficient R6der method The static friction coefficient between fibers was measured using a fiber friction coefficient measuring device (manufactured by Aoi Seiki Research Institute).

(3) Humid heat shrinkage rate 101LV (1-W) before shrinkage was measured, and after shrinking with steam treatment under normal pressure for 30 minutes, 1
The test length A was measured under a load of 0''f//d.The shrinkage rate was calculated from the following formula.

(4) Dry heat shrinkage rate 1 11J was determined by a method similar to the measurement of wet heat shrinkage rate, but the shrinkage was performed in a soaking oven. The shrinkage rate was determined by measuring the test length before shrinkage: LD and the test length after shrinkage: L'D.

(5) Creating a high pile Shrinkable fibers and non-retractable fibers were blended and humidity controlled, and passed through an opener and a card to create a card sliver. Next, sliver knitting was performed using a high pile knitting loom, the pile portion was cut using shirring to make the pile length uniform, and the back side of the pile was back coated with an acrylate adhesive. At that time, steam was blown on the back side of the pile (=j) to shrink the shrinkable fibers in the pile part and improve the adhesion of the adhesive.
It was dried at 110° C. and the shrinkage process was made firm, followed by polylashing and shirring to give it a high pile finish.

(6) Appearance and texture evaluation of high pile The pile products prepared in (5) above were evaluated for appearance and drapery-related texture by seven experts from a visual and tactile perspective.

Examples will be described below, and parts and % in the examples mean parts by weight and % by weight unless otherwise specified.

Example 1 27 parts of a copolymer consisting of 48 parts of acrylonitrile, 51 parts of vinyl chloride, and 1 part of sodium metaallylsulfonate were dissolved in 73 parts of acetone to prepare a spinning stock solution, and a spinning stock solution of 0.08 parts/min.
, through 6,000 holes of 11-karat gold into a 140% acetone water bath at 25°C.
After stretching 1.5 times in an aqueous solution of % acetylene, it was washed with water at 60''C.
, 800 cst,) with a nonionic surfactant, dried at 180"C, and further dried at 10"C.
After stretching 20 times at 0°C and attaching an amphoteric antistatic agent, crimping was applied to give a final fineness of 4. Od shrinkable fibers were obtained and cut into 38 pieces. The obtained shrinkable fiber had a wet heat shrinkage rate of 40.7%, a dry heat shrinkage rate of 37.8% when treated at 130°C for 20 minutes, a static friction coefficient of 0.1.43, and an organopolysiloxane adhesion amount of 0.32%. (0.12% in terms of silicon atom). Further, a high pile was prepared by blending 70% of this shrinkable fiber with 30% of "Berel" type 212 dull 16d, 51 questions (Eastman Kodatsu'/uff) dyed cotton.

At that time, the pile length was cut to 18 mm when yarning after sliver knitting, and 20 πm when shearing after finishing with polylash. As shown in Table 1, the high pile appearance and texture were both very good.

Example 2 Preparation of the spinning dope 'l'j-02 used in Example 1 1.
Add 0.2 parts of the dispersion liquid to 100 parts of the copolymer in 02 minutes, mix uniformly, and add 0.08 parts per 6,000 parts.
The mixture was spun into a 40% acetone aqueous solution at 25° C. through a zero-hole nozzle. Further, it was stretched to 1.8 times in a 20% acetone aqueous solution at 25°C, and then washed with water at 60°C.
It was dried at 120°C, then the organopolysiloxane liquid and double injection type antistatic agent used in Example 1 was applied, crimped, and dried at 120°C. Pass the yarn in contact with a 125'c hot roll to 1.47
After being stretched twice, the final fineness is 3.3d by applying a crimp.
Shrinkable fibers were obtained and cut to 3.3 mm) L, fc.

The resulting shrinkable fiber had a wet heat shrinkage rate of 32°5% and a temperature of 130°C.
x20 minute dry heat shrinkage rate 33.6%, static friction coefficient 0.
171. The amount of organopolysiloxane deposited was 0.25% (0.095% in terms of silicon atoms). In addition, 80% of this shrinkable fiber and “Kaneka CI-IN J 5L20d,
A high pile was prepared by mixing 20% of dyed cotton of 51 mm (manufactured by Kanebuchi Kagaku). At that time, the pile length was cut to 20 pieces in the shirring after sliver knitting, and the pile length was cut to 23 pieces in the shirring after the polylash finish. The results of appearance and texture are shown in Table 1.

Example 3 1 part of carbon black was added to 100 parts of the spinning copolymer used in Example 1 and mixed to a uniform ratio of 0.08. The yarn was discharged into a 140% acetone aqueous solution at 25° C. through a 6,000-hole nozzle, stretched 1.8 times in 20% acetone water, and washed with water at 60° C. After further drying at 130°C, the film was stretched 1.6 times at 100°C.

Next, the organopolysiloxane liquid and the amphoteric type antistatic agent used in Example 1 were applied several times to give a crimp, and the final fineness was 4. 11 fibers of the ld were obtained and cut into 38 pieces. The obtained yield & iI raw fiber has a wet heat shrinkage rate of 30.
8 modification, 180° (static IY friction coefficient Q of dry heat shrinkage treatment for Hxio, 211 = Organopolysilogysan 1 size wearing amount 0.
37% (0.14% in silicon atom equivalent). In addition, this shrinkage i raw fiber 60% and "Kanekalon" RFM
20d, 511771 (manufactured by Kanebuchi Chemical Co., Ltd.) was blended at 40% to create a high pile. In this case, the pile length is set to 16 mm for shirring after sliver knitting, and 2 for shirring after polylash finishing.
I cut it to 0 rin. The results for appearance and texture are shown in Table 1.

Example 4 Commercially available acrylic shrinkable fiber “Dz″alonj
5508.7 dtex, 100/1B (+mi (manufactured by Bayer)) using an aqueous solution of nonionic detergent 2.971 in an Obermeyer at 30 to 35°C for 15 minutes to remove oil, rinse with water, and air dry. Organopolysiloxane with amino groups on cotton (amine equivalent 1,100,
(viscosity: 380 cst) was immersed in a liquid emulsified with a nonionic surfactant, centrifugally dehydrated, and air-dried. Post-injection type static 1R inhibitor O, 1% for MI IC
After spraying, the fibers were opened and a sliver was created using a card, which was further cut into 38 pieces using a cutter.

The obtained shrinkable fiber has a wet heat shrinkage rate of 36%, igo”cx
The static friction coefficient of the dry heat shrinkage treatment for io minutes was 0.218, and the amount of siloxane attached was 0.94% (0.36% in terms of silicon atoms). Also, 50% of this shrinkable fiber
and [Kanekalon JR'FM2Ud, 511111W
, 50% was blended to create a high pile. At that time, the pile length was cut to 18M in the shearing after sliver knitting, and the pile length was cut to 20 fins in the shearing after polylashing finishing. The results of appearance and texture are shown in Table 1.

Comparative Example 1 Commercially available modacrylic shrinkable fiber “Kanekalon” HS8d
, 88mm (manufactured by Kanebuchi Chemical Co., Ltd.), the wet heat shrinkage rate was 39.8%, and the dry heat shrinkage rate at 130°C x 1O was 38.0.
%, static friction body aO8 after dry heat treatment at 130°C
It showed 342. A high bail was prepared by blending 35% of this absorbent fiber and 65% of Kanekalon J HF M20d, 51ho. The shirring conditions were the same as in Example 4. Table 1 shows the results of appearance and texture. .

Comparative Example 2 Commercially available acrylic shrinkable fiber rDralonJ
508, 7 dtex, 100/1aOmm (manufactured by Bayer) was measured and the wet heat shrinkage rate was 36%, 180
It showed a dry heat shrinkage rate of 32% for 0°CX10 minutes and a static friction coefficient of 0.277 after dry heat shrinkage treatment for 130°CX10 minutes. 50% of this shrinkable fiber and "Kanekalon JRFM20, (
A high pile was made by blending 1.51 mm and 50% cotton. The shearing conditions were the same as in Example 4. The results for appearance and texture were as shown in Table 1.

Table 1 Example 1 ◎ ◎ Example 2 ◎ ◎ Example 3 0 0 Example 4 0 0 Comparative example 1 x x Comparative example 2 △
The level difference is clear and it looks like natural fur, and the polishing property of down I\A is good), ○ is good, △
indicates somewhat poor quality, and x indicates poor quality.

(2) Texture (drapeability) evaluation: ◎ is very good (
○ indicates good quality, △ indicates slightly poor quality, and × indicates poor quality.

Patent applicant Kanekabuchi Chemical Industry Co., Ltd. Procedural Nailr official document (spontaneous) 1. Indication of the case Patent Office No. 128381 of 1982 2. Name of the invention Shrinkable fiber for pile 3. Person making the amendment Relationship to the case Patent applicant address: 3-2-4 Nakanoshima, Kita-ku, Osaka Name (094)
) Li Fuchi Chemical Industry Co., Ltd. Representative Director Takashi
1) Sho 4, agent address: 3-2-4-5 Nishitenma, Kita-ku, Osaka City, we will amend the statement in the statement subject to amendment as follows; (1) No. 9
Page, line 12, ``Rust prevention, coloring prevention,'' is corrected to ``rust prevention, coloring prevention,''.

(2) On page 19, line 12, "rH3'3d," is corrected to (HHBd,).

that's all

Claims (1)

[Scope of Claims] A shrinkable fiber having a shrinkage rate of 15% or more, which is formed by attaching an organopolysiloxane having 1,7 mino groups to the fiber surface, and the coefficient of static friction between the fibers after shrinkage is 0. .2
A shrinkable fiber for pile having a weight of 80 or less. 2. Shrinkage T'l fiber is acryloni) 30% by weight
The pile shrinkable fiber according to claim 1, which is an acrylic synthetic fiber obtained by copolymerizing the above.