JP2001279524A - Vinyl chloride-based resin yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vinyl chloride-based resin yarn solving a problem that when a vinyl chloride-based resin yarn is mixed with a tin-based heat stabilizer, a gloss higher than that of the vinyl chloride-based resin yarn mixed with a lead-based heat stabilizer is produced. SOLUTION: In this vinyl chloride-based resin yarn obtained by spinning a vinyl chloride-based resin composition obtained by compounding 100 pts.wt. of PVC(polyvinyl chloride) resin with 0.5-5.0 pts.wt. of a tin-based heat stabilizer and 0.5-2.5 pts.wt. of a lubricant and adjusting its fineness to 50-1,000 deniers, the vinyl chloride-based resin composition is mixed with 0.5-5.0 pts.wt. of a crosslinking type MMA(methyl methacrylate).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride resin fiber which has a low gloss even when a tin heat stabilizer is used, and has a long-run productivity.

[0002]

2. Description of the Related Art Conventionally, when a vinyl chloride resin composition is formed into a fibrous form for a screen yarn, a tin heat stabilizer is used for heat stability.

[0003]

Here, the tin-based heat stabilizer has a problem that a high luster is produced on the vinyl chloride resin fiber. Further, when a matting agent is added to the vinyl chloride-based resin composition, there is a new problem that a dust (granular resin adhering to fibers from a mold discharge port) is generated. This mess was a cause of thread breakage, and thus a hindrance to long-run production.

[0004] It is an object of the present invention to provide a polyvinyl chloride resin fiber which does not increase luster even when a tin-based heat stabilizer is blended, and which does not cause shine even when a matting agent is blended. is there.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies on the formulation of the composition in order to solve the above-mentioned problems, and as a result,
A vinyl chloride resin composition having a PVC (polyvinyl chloride) resin, a tin-based heat stabilizer and a lubricant, is spun and has a fineness of 50 to 1000 deniers. When a cross-linked MMA (methyl methacrylate) is blended in a specific range,
They have found that a matte yarn can be obtained, and have completed the present invention.

That is, the present invention provides a vinyl chloride resin having 100 parts by weight of a PVC (polyvinyl chloride) resin, 0.5 to 5.0 parts by weight of a tin heat stabilizer and 0.5 to 2.5 parts by weight of a lubricant. The composition was spun, and in a vinyl chloride resin fiber having a fineness of 50 to 1000 denier, 0.5 to 5.0 parts by weight of crosslinked MMA (methyl methacrylate) was blended with the vinyl chloride resin composition. It is a vinyl chloride resin fiber characterized by the above.

In another invention, 100 parts by weight of a PVC (polyvinyl chloride) resin, a tin-based heat stabilizer of 0.5 to
A vinyl chloride resin composition containing 5.0 parts by weight, a lubricant of 0.5 to 2.5 parts by weight and a matting agent of 0.5 to 5.0 parts by weight is spun to have a fineness of 50 to 1000 denier. In the obtained vinyl chloride resin fiber, MMA (methyl methacrylate) is added to the vinyl chloride resin composition in an amount of 0.5 to 1.
It has been found that when 5 parts by weight are blended, no run-out occurs and long-run production has been made possible.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The reason why the vinyl chloride resin composition of the present invention is blended with a crosslinked MMA (methyl methacrylate) is to make the vinyl chloride resin fibers mat. This matting is achieved by using the cross-linked MM
A is achieved by the fact that A has good compatibility with the vinyl chloride resin composition, and the crosslinked MMA appears on the surface of the spun yarn and loses surface smoothness. If the compounding ratio of this cross-linked MMA is too small, the matting effect is small, and if it is too large, it becomes a foreign substance and causes mess.
The parts by weight are good, and preferably 1.0 to 2.0 parts by weight.

When the crosslinked MMA is employed, the average particle size is preferably 5 to 20 μm. This is because when the average particle size is small, the matting effect is small even when it appears on the yarn surface, and when the average particle size is large, the yarn breaks.

The vinyl chloride resin composition used in the present invention includes a conventionally known homopolymer, which is a homopolymer of vinyl chloride, or various conventionally known copolymer resins.
There is no particular limitation.

If the average polymerization degree of the vinyl chloride resin used in the present invention is too small, the melt viscosity becomes low and the spinnability deteriorates. If the average polymerization degree is too large, the melt viscosity becomes high and the nozzle pressure becomes high, and the fiber pressure increases. Is colored, so 7
It is preferably from 00 to 1500.

The tin-based heat stabilizer is added to the vinyl chloride resin composition according to the present invention because it is a non-toxic heat stabilizer. If the compounding ratio of the tin-based heat stabilizer is too small, the effect of preventing thermal decomposition during molding is small, and if it is too large, the viscosity of the vinyl chloride-based resin composition becomes low, causing the occurrence of scum (particles generated on the fiber surface). 0.5 ~
5.0 parts by weight are preferred. The tin-based heat stabilizer is specifically, a mercaptotin-based heat stabilizer, a malate tin-based heat stabilizer,
A simple substance or a mixture selected from laurate tin heat stabilizers and the like can be employed. Examples of the mercaptotin-based heat stabilizer include dimethyltin mercapto and dioctyltin mercaptide.Examples of the maleate-tin-based heat stabilizer include dimethyltin malate and dioctyltin-maleate.Examples of the laurate tin-based heat stabilizer include dimethyl laurate. And dioctyltin laurate.

The reason why the lubricant is blended into the vinyl chloride resin composition according to the present invention is to improve the releasability of the vinyl chloride resin composition from the inner peripheral surface of the mold. When the compounding ratio of the lubricant is too small, the releasability is not exhibited, and when the compounding ratio is too large, the discharge amount is reduced. Therefore, 0.5 to 2.5 parts by weight is preferable. As the lubricant, a conventionally known lubricant can be employed, and specifically, a hydrocarbon-based lubricant, a higher fatty acid-based lubricant,
A simple substance or a mixture selected from an ester lubricant, a metal soap lubricant and the like can be employed. Examples of the hydrocarbon-based lubricant include polyethylene wax and paraffin wax, and examples of the higher fatty acid-based lubricant include stearic acid, palmitic acid,
Examples include unsaturated fatty acids such as myristic acid and mixtures thereof. Examples of the ester lubricant include esters of various fatty acids and higher alcohols, and examples of the metal soap lubricant include calcium stearate and zinc zinc stearate.

Next, another invention will be described. The reason why MMA (methyl methacrylate) is blended into the vinyl chloride resin composition according to the other invention is to delay the gelation of the vinyl chloride resin composition and suppress the occurrence of rust. When the compounding ratio of MMA is too small, the effect of suppressing the generation of scum is small, and when too large, gelation is accelerated. Therefore, 0.5 to 1.5 parts by weight is preferable. The MMA preferably has a small die-swell effect, and thus preferably has a polymerization degree of 300,000 to 500,000.

The reason why the matting agent is added to the vinyl chloride resin composition according to another invention is to make the surface state of the yarn rough. If the compounding ratio of this matting agent is too small, the matting effect is small, and if it is too large, it may cause a mess during spinning, so it is preferably 0.5 to 5.0 parts by weight. As the matting agent in the present invention, conventionally known matting agents can be employed, and specifically, in addition to the crosslinked MMA described in claim 1,
A simple substance or a mixture selected from silica, calcium carbonate and the like can be employed.

The vinyl chloride resin compositions used in the present invention and other inventions include homopolymers which are conventionally known homopolymers of vinyl chloride and various conventionally known copolymer resins, and are particularly limited. is not. If the average polymerization degree of the vinyl chloride resin is too low, the melt viscosity is low and the spinnability is poor. If the average polymerization degree is too high, the melt viscosity is high, the nozzle pressure is high, and the fibers are colored. It is preferably 1500.

In the present invention and other inventions, a known compounding agent used for a vinyl chloride composition can be added according to the purpose within a range not to impair the effects of the present invention. Examples of the compounding agent include a processing aid, a reinforcing agent, an ultraviolet absorber, an antioxidant, a weathering agent, an antistatic agent, a filler, a flame retardant, a pigment, an initial coloring improving agent, a conductivity imparting agent, a fragrance, and the like. There is.

The vinyl chloride resin composition according to the present invention and other inventions can be prepared by mixing a powder compound mixed using a conventionally known mixer (for example, a Henschel mixer, a ribbon blender, etc.) or a pellet compound obtained by melting and mixing the powder compound. It may be. The powder compound can be produced under conventionally known conditions, and may be a hot blend or a cold blend. The pellet compound can be produced by using, for example, a single-screw extruder, a different-direction twin-screw extruder, a same-direction twin-screw extruder, a co-kneader, or the like, which is used in the production of a usual vinyl chloride-based pellet compound.

When the vinyl chloride resin composition is converted into a fibrous undrawn yarn, for example, a single-screw extruder, a bidirectional twin-screw extruder, an anisotropic twin-screw extruder, a conical twin-screw extruder, etc. A conventionally known extruder can be used.

[0020]

EXAMPLES Hereinafter, examples according to the present invention will be described in detail with reference to Table 1 in comparison with comparative examples. Table 1
Table 1 describes the characteristic composition blended in the polyvinyl chloride resin composition in each experimental example and the characteristic values at that time.

[0021]

[Table 1]

The "matte" in the characteristic values in Table 1 refers to a vinyl chloride resin fiber produced under the production conditions described below and a conventional vinyl chloride resin fiber (a lead-based non-lustrous resin which is conventionally used as a heat stabilizer). When a gloss difference was measured using a gloss meter, x was 1.0 or more, Δ was 0.5 or more and less than 1.0, and Δ was 0.5. When it was less than, it was rated ○.

The “degree of occurrence of mist” in the characteristic value is defined as × 2 mm when one or more shines of 2 mm or more are generated on the fiber surface when visually extruded for 40 minutes under the following manufacturing conditions. The case where the following menis was found was marked with △, and the case where none was found was marked with ○. The “degree of yarn breakage” was evaluated as “good” when no yarn breakage occurred in any of the 40-minute spun products when the product was stretched and annealed.

Next, Experimental Example 1 will be described. Experimental Example 1 was a crosslinked MMA as a matting agent shown in Table 1.
(Average particle size: 10 μm: (MR-10G manufactured by Soken Chemical Co., Ltd.))
In addition to 0.5 parts by weight, 100 parts by weight of a PVC (polyvinyl chloride) resin (TH-700 manufactured by Taiyo Vinyl Co., Ltd., average degree of polymerization 720), 0.7 parts by weight of octyltin mercaptide as a tin-based heat stabilizer, and octyltin A total of 1.3 parts by weight of laurate 0.6 parts by weight, a total of 2.0 parts by weight of polyethylene wax (Hiwax400P manufactured by Mitsui Petrochemical Co., Ltd.) and an ester wax (G32, G60 manufactured by Henkel Japan) as a lubricant, a heat-resistant auxiliary 0.3 parts by weight of epoxidized soybean oil (O-130P manufactured by Asahi Denka Co., Ltd.) and a phosphorus-based chelator (ADK STAB 1500 manufactured by Asahi Denka Co.)
A polyvinyl chloride resin composition containing 2 parts by weight and 0.2 parts by weight of benzotriazole (JF-77 manufactured by Johoku Chemical Co., Ltd.) as a weathering agent is spun into a vinyl chloride resin fiber. In the following experimental examples,
The parts other than those mentioned in Table 1 were manufactured in the same manner with the same configuration.

The polyvinyl chloride resin composition in Experimental Example 1 was made into a powder compound in the following steps.
That is, 100 parts by weight of the polyvinyl chloride resin 25
Kg and each additive were put into a 75-liter Henschel mixer, and the contents were stirred and mixed until the temperature of the contents reached 90 ° C. Then, while stirring the cooling water while flowing through the jacket of the Henschel mixer, the contents were mixed. Temperature is 55 ° C
Cooled until As a result, a powdery vinyl chloride resin compound was obtained. The pellet processing conditions are as follows.

[Pellet processing conditions] 60 mmφ single screw extruder Screw: full flight type, compression ratio 1.8, L /
D = 25 (D; diameter, L; screw length) Wire mesh: 50 × 50 × 100 × 150 mesh Cylinder temperature: C1 = 135 ° C., C2 = 135 ° C., C
3 = 140 ° C, C4 = 140 ° C, C5 = 145 ° C Die temperature: 155 ° C Load: 65 amps or less Resin pressure: 500 kg / cm ² or less Cutting method: hot cut

The polyvinyl chloride resin compound was melt-spun under the following conditions. [Spinning conditions] Extruder 65 mmφ single screw extruder Screw: Full flight type, compression ratio 2.0, L /
D = 25 (D; diameter, L: screw length) Nozzle: hole cross-sectional area = 0.16 mm ² , perfect circle, number of holes = 12
0, circular arrangement Cylinder temperature: C1 = 130 ° C, C2 = 145 ° C, C
3 = 135 ° C., C4 = 125 ° C. Adapter temperature: 135 ° C. Turn head temperature: 180 ° C. Die temperature: 195 ° C. Extrusion amount: 40 kg / h Stretching temperature: steam atmosphere temperature 95 ° C. Annealing temperature: steam atmosphere temperature 95 ° C.

Under the spinning conditions, the vinyl chloride resin composition flows out of the nozzle portion in the vertical direction, and is rapidly cooled in a cooling bath to form undrawn fibers. The undrawn fiber is drawn and annealed in the above atmosphere, and then wound by a take-up machine. At the time of this winding, the undrawn fiber is taken up so that its fineness becomes 680 denier.

The gloss of the vinyl chloride resin fiber of Experimental Example 1 did not increase even when a tin heat stabilizer was added to the vinyl chloride resin. In addition, although scumming occurred, no yarn breakage occurred.

In Experimental Example 2, the mixing ratio of the crosslinked MMA of Example 1 was changed from 0.5 parts by weight to 2.0 parts by weight. In Experimental Example 2, similar to Experimental Example 1, good results could be obtained. Therefore, Experimental Examples 1 and 2
The vinyl chloride resin fibers according to (1) are not suitable for long-run production, but have low luster even when a tin-based heat stabilizer is added.

In Experimental Example 3, the blending ratio of the cross-linked MMA in Experimental Example 1 was changed to 0.1 part by weight. Experimental Example 3
No matting effect could be obtained due to a small amount of cross-linked MMA as a matting agent.

In Experimental Example 4, the blending ratio of the cross-linked MMA in Experimental Example 1 was changed to 8.0 parts by weight. Experimental Example 4
Probably because there were many cross-linked MMA as a matting agent,
Threading occurred and thread breakage occurred.

Next, Experimental Examples 5 and 6 will be described in detail with reference to Experimental Examples 7 and 8. Experimental Examples 5 to 8 show that in the polyvinyl chloride resin composition of Experimental Example 1, MMA having a molecular weight of 300,000 was used.
(METABLEN P-700 manufactured by Mitsubishi Rayon Co., Ltd.) in an amount of 0.5 parts by weight, 1.5 parts by weight, 0.2 parts by weight, and 2.0 parts by weight, respectively.

As shown in Experimental Example 7, when the amount of MMA was small, scumming occurred, but the scumming did not become large enough to cause thread breakage even in long-run production. Further, as shown in Experimental Example 8, when the amount of MMA was large, a large scumming occurred and the yarn was broken. Therefore, the vinyl chloride-based resin fibers according to Experimental Examples 5 and 6 had a low luster even when a tin-based heat stabilizer was added, and were capable of long-run production.

[0035]

As described above, a vinyl chloride having 100 parts by weight of a PVC (polyvinyl chloride) resin, 0.5 to 5.0 parts by weight of a tin heat stabilizer and 0.5 to 2.5 parts by weight of a lubricant. In a vinyl chloride resin fiber obtained by spinning a resin composition and having a fineness of 50 to 1000 denier, 0.5 to 5.0 parts by weight of crosslinked MMA (methyl methacrylate) is blended with the vinyl chloride resin composition. However, this has the effect that gloss does not increase even if a tin-based heat stabilizer is added to the vinyl chloride-based resin composition.

Further, PVC (polyvinyl chloride) resin 10
0 parts by weight, 0.5 to 5.0 parts by weight of a tin heat stabilizer, 0.5 to 2.5 parts by weight of a lubricant, and 0.5 to 5.0 parts by weight of a matting agent. In a vinyl chloride resin fiber having a fineness of 50 to 1000 denier by spinning the product, 0.5 to 1.5 parts by weight of MMA (methyl methacrylate) is blended with the vinyl chloride resin composition. Even if a matting agent is blended with the vinyl chloride resin composition, no long-running is possible and long-run production is possible.
This has the effect of dramatically improving productivity.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) C08L 33:12) C08L 33:12) (72) Inventor Fumio Matsukawa 2-13-13, Kamakura-shi, Kanagawa No. 1 F-term in Toyo Chemical Co., Ltd. (reference) 4J002 AE043 BB033 BD041 BD051 BG062 EF047 EF057 EG037 EG047 EZ046 FD066 FD173 FD177 GK01 4L035 BB54 DD14 EE01 FF04

Claims (2)

[Claims] 1. 100 parts by weight of a PVC (polyvinyl chloride) resin, 0.5 to 5.0 parts by weight of a tin-based heat stabilizer, and 0.1 part by weight of a lubricant.
A vinyl chloride resin composition having 5 to 2.5 parts by weight is spun and the fineness thereof is 50 to 1000 denier. In a vinyl chloride resin fiber, the vinyl chloride resin composition is crosslinked with MMA (methyl methacrylate). 0.5-5.0
A vinyl chloride resin fiber characterized by being blended in parts by weight. 2. 100 parts by weight of PVC (polyvinyl chloride) resin, 0.5 to 5.0 parts by weight of tin-based heat stabilizer, 0.5 part of lubricant
-2.5 parts by weight and a matting agent of 0.5-5.0 parts by weight are spun to give a fineness of 5
A vinyl chloride resin fiber comprising 0 to 1000 denier, wherein 0.5 to 1.5 parts by weight of MMA (methyl methacrylate) is added to the vinyl chloride resin composition.