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Colored polyamide fiber and process for producing the same

A technology of polyamide fiber and polyamide resin, applied in the field of artificial leather, can solve the problems of unavoidable bending and inability to obtain fibers, etc.

Active Publication Date: 2008-03-12
KURARAY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, when using a masterbatch containing these dispersants and additives, when producing very fine ultrafine fibers of 0.9 dtex or less, especially 0.1 dtex or less, when the colorant content is set to 3% or more in order to increase the color, When carbon black with a small particle size is used as a pigment, bending from the spinning die (the phenomenon that the fluid of the molten polymer bends during melt spinning) or broken filaments cannot be avoided, and physical properties that are durable and practical cannot be obtained. fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] To 80 parts of nylon 6 chips with a number average molecular weight of 13000, add 20 parts of carbon black with a primary particle size of 20nm, 2 parts of ethylene bisstearamide, and 0.5 parts of isopropyl triisostearoyl titanate. The melt extruder performs melt mixing at 280°C, and cuts the obtained tow after water cooling to obtain a polyamide master batch for dope dyeing.

[0071] Use a chip blender to mix 25 parts of the polyamide masterbatch for dope dyeing, 25 parts of nylon 6 slices with a number average molecular weight of 13000, and 50 parts of low-density polyethylene slices. The conventional melt spinning with 24 spinning holes is used. The yarn device spins the mixture at a spinning temperature of 280°C to obtain an undrawn sea-island type fiber with a fineness of 10.0 dtex in which nylon 6 is islands and polyethylene is sea. The spinning breakage rate at this time was about 0.15 times per 100 kg. Table 2 shows the physical properties of the undrawn sea-island ...

Embodiment 2

[0075] A mixture obtained by mixing 30 parts of the polyamide masterbatch for dope dyeing described in Example 1, 30 parts of nylon 6 chips with a number average molecular weight of 13,000, and 40 parts of low-density polyethylene chips using a chip blender, except for this Otherwise, in the same manner as in Example 1, an undrawn sea-island fiber with a fineness of 15 dtex was obtained. The spinning breakage rate at this time was about 0.1 times per 100 kg. Table 2 shows the physical properties of the undrawn sea-island type fiber.

[0076] It was finished into pile-like artificial leather in the same manner as in Example 1 and subjected to surface inspection. As a result, no defects (grainy lump) caused by defective silk prevention were found.

Embodiment 3

[0078] A mixture obtained by mixing 21 parts of the polyamide masterbatch for dope dyeing described in Example 1, 39 parts of nylon 6 chips with a number average molecular weight of 13,000, and 40 parts of low-density polyethylene chips using a chip blender. Otherwise, in the same manner as in Example 1, an undrawn sea-island fiber with a fineness of 15.0 dtex was obtained. The spinning breakage rate at this time was about 0.1 times per 100 kg. Table 2 shows the physical properties of the undrawn sea-island type fiber.

[0079] It was finished into pile-like artificial leather in the same manner as in Example 1 and subjected to surface inspection. As a result, no defects (grainy lump) caused by defective silk prevention were found.

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PUM

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Abstract

Colored polyamide fibers which comprise a polyamide resin, a pigment, a coupling agent, and a compound represented by the following general formula (I): R'-CO-NH-R-NH-CO-R'' (I) (wherein R represents C1-4 alkylene; and R' and R'' each independently represents a C9-18 aliphatic hydrocarbon group). Even when a raw material composition containing the pigment in a high concentration is used, the colored polyamide fibers can be produced therefrom without causing bending or fiber breakage during melt spinning. The pigment has been evenly dispersed in the colored polyamide fibers. The fibers hence has a high color density and a high strength. The colored polyamide fibers are suitable for use in producing artificial leathers.

Description

Technical field [0001] The present invention relates to a colored polyamide fiber (dope dyed polyamide fiber) having excellent fiber properties obtained from a colored polyamide composition, a method for producing the same, and an artificial leather formed using a fiber entangled body composed of the colored polyamide fiber. Even if the polyamide composition contains a high concentration of pigment, it will not bend or break during melt spinning, and can be spun stably. Background technique [0002] Generally, ultra-fine fibers have poor dyeability compared with fibers of general fineness. When dyeing suede-like materials composed of ultra-fine fibers to form a deep color tone, a large amount of dye is required, and there are light fastness and strong dyeing properties. The quality of fastness is reduced, and the cost is increased. As a countermeasure to solve these problems, a method in which a pigment is added to the raw material components of the ultrafine fibers in advance is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F8/12D06N3/00
CPCD01F1/10D01F8/06D06N3/0004D01F6/60D01F6/90D06N3/0015D01F8/12D01F1/04Y10T428/2927Y10T428/298Y10T428/2395Y10T428/249921D01F6/80D10B2401/063D10B2401/14
Inventor 芦田哲哉吉本伸一米田久夫高桥裕介富田研二郎堀田实
Owner KURARAY CO LTD
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