JPH02169736A - Crimped yarn of mass-pigmentation polyamide - Google Patents

Abstract

PURPOSE:To obtain the subject crimped yarn excellent in color quality and weather resistance and especially useful as a pile material for an outdoor mat by using a copper compound-containing polyamide polymer as the base polymer and blending a pigment therewith. CONSTITUTION:A copper compound-containing polyamide polymer (e.g. nylon 66) the main chain of which is composed of amide bonds is used as the base polymer and, e.g. a perylene-based red pigment of the formula (R is 1-2C alkyl) is blended therewith in an amount of 0.25-1.25wt.% (preferably 0.5-1.0wt.%) based on the amount of the polyamide. The resultant mixture is spun to obtain the objective crimped yarn.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spun-dyed polyamide crimped yarn with excellent weather resistance and suitable as a pile material for car vents, especially as a pile material for outdoor mats whose usage environment is harsh. It is something.

[Prior Art] Due to its excellent dyeing performance, polyamide yarn for carpets is dyed with various dyes such as acid dyes, basic dyes, disperse dyes, and metal complex dyes, and is used for various purposes.

However, in recent years, there has been a strong tendency to desire improved weather resistance due to changes in the usage environment.Especially in the mat field, as mats are often used outdoors where they are easily exposed to sunlight, improving weather resistance is becoming an essential element. . In order to improve the weather resistance of polyamide colored yarn, it is common to use a polyamide polymer containing a copper compound, or to dye a polyamide system containing a copper compound with a metal complex dye (hereinafter referred to as metal-containing dye). However, although this method improves weather resistance to some extent, it does not reach a satisfactory level in terms of performance, and furthermore, dyeing unevenness in the yarn length direction due to the dyeing mechanism causes car-venting. It has the disadvantage that sometimes it tends to cause meridian lines.

In addition, a method using spun-dyed polyamide has been proposed as a method that has good weather resistance and is less likely to cause staining spots.
-37997 r Method for finely dispersing carbon black in ``Production method of undiluted solution colored polyamide'', JP 47-13333 r Molding material such as artificial grass containing specific pigment in ``Weather-resistant green colored polyamide composition'' A composition suitable as JP-A-49-11514
81' Aromatic Polyamide Compositions', aromatic polyamides with improved photostability added with specific colored fillers, etc., but there are many reports on achromatic coloring, and there are limited reports on chromatic colors. There have only been reports on the hues in a limited number of areas, such as artificial two rivers, and the basic colors of carpets are red, light brown, bluish gray,
There have been no reports on chromatic colored polyamides such as reddish-purple, brown, and dark blue.

The reason for this is that the spinning temperature of polyamide polymers is generally in a high temperature range, and polyamide polymers have strong reducing properties, so there are only a few types of colorants that can withstand such spinning processes, and they have poor weather resistance. This is thought to be due to the fact that it is quite difficult to select a coloring agent that can exhibit sufficient effects.

On the other hand, in the carpet industry, hue is an important factor that determines the quality of carpet products, and in recent years, hues and color requirements have become more diverse as interior materials have become fashionable. Due to the increasing number of opportunities for use in environments that are relatively susceptible to sunlight exposure, there has been a considerable increase in social demand for pile materials for colored carpets that have excellent weather resistance and good color quality.

[Problem to be solved by the invention]

The present invention solves the problems of conventional spun-dyed polyamide crimped yarns, and provides a sprue-dyed polyamide 1-containing crimped yarn that exhibits relatively clear coloring, good color quality, and excellent weather resistance. The purpose is to provide

[Means to solve the problem]

The present inventor selected a pigment that can sufficiently withstand the manufacturing process for obtaining a polyamide single-curp yarn and exhibits sufficient weather resistance performance, and added this pigment to a copper-containing polyamide base polymer to perform spinning, stretching, and winding. This is the result of extensive research aimed at providing a spun-dyed polyamide crimped yarn that can be made into a spun-dyed polyamide crimped yarn by shrinking, and that can exhibit the above-mentioned excellent performance when used as a pile material for carpets. , arrived at the present invention.

The spun-dyed polyamide crimped yarn which has achieved the object of the present invention is characterized by being a polyamide polymer containing a base polymer potassium compound and containing a colorant having good weather resistance. These spun-dyed polyamide crimped yarns are suitable as pile materials for carpets, particularly in terms of performance such as weather resistance, acid resistance, and alkali resistance.

As the colorant having good weather resistance in the present invention, various colorants can be used depending on the desired color of the spun-dyed polyamide crimped yarn.

A typical red colorant used in the present invention is a perylene-based red colorant represented by the following formula, and the amount added is arbitrary depending on the red color density, but usually 0625 It ranges from 1 to 25 wt%, preferably from 0.5 to 1.04%. If it is less than 0.5 wt%, not only will the red color become lighter, but also the weather resistance will decrease, making it unsuitable for practical use. If it is more than 1.0 wt%, it will cause problems in terms of spinning performance, especially yarn breakage during drawing, and loss of colorant components from the yarn surface. Problems such as bleed-out will occur, and the strength retention rate after weathering treatment will also decrease.

(In the formula, R is an alkyl group having 1 to 2 carbon atoms.) In the present invention, colorants other than the above-mentioned red colorant may be contained, but the amount of titanium dioxide should be 0.3 wt% or less. It is preferable to do so. In order to improve the color "glossy", if the titanium dioxide content in the system exceeds 0.3 wt%, the "whitish" feeling will become strong and the clarity will not only decrease, but also the effect of reducing weather resistance will become stronger. So I don't like it. Further, it is also possible to add another coloring agent for adjusting the red color in an amount limited to 20-t% or less based on the perylene coloring agent serving as the main coloring agent. If it exceeds 20 wt%, various problems will occur in terms of spinning performance.

The light brown (beige) coloring agents used in the present invention include a general Bengara coloring agent mainly containing FezO:+ (containing 80 wt% or more) and a carbon black coloring agent (carbon content is usually 95-t%). (above), and the amount added is arbitrary depending on the light brown color density, but usually 0.02 to 0.30 ivt%, preferably 0.025 to 0.30 ivt% of the red coloring agent based on the polyamide. The carbon black colorant ranges from 0.01 to 0.30 wt%, preferably from 0.01 to 0.20 wt%. Regarding the Bengara coloring agent, if it exceeds 0.021 mt%, not only will the brown color become lighter, but the weather resistance will decrease, making it unsuitable for practical use, and if it exceeds 0.30 wt%, it will cause problems in terms of spinning performance, especially yarn breakage during drawing. This results in problems such as an increase in the pressure inside the spinning machine due to clogging of the filter medium.

For carbon black and colorants, 0.01wt%
If the content is less than 0.3% by weight, the blackness becomes too light and it is insufficient to exhibit a pale brown hue, and if it exceeds 0.30wt%, the blackness becomes too strong and becomes a "dark brown" color.

In the present invention, colorants other than the above-mentioned colorants may be contained, but the amount of titanium dioxide is 0.3 wt%.
It is preferable to do the following. In order to improve the color "glossy", if the titanium dioxide content in the system exceeds 0.3 wt%, it will not only give a strong "whitening" feeling (but also reduce the sharpness (it has the effect of reducing weather resistance). This is not preferable because it makes the color stronger.Also, it is possible to add other colorants to adjust the light brown color in an amount of up to 20wt% based on the Bengara colorant that is the main colorant.20wt% Exceeding this will cause various problems in terms of spinning performance and weather resistance.

The gray (blueish) colorant used in the present invention includes a cobalt blue colorant represented by the general formula CoO,nA E J3 (n is 2 to 6) and a carbon black colorant (carbon content is usually 95%). % or more), and the amount added is as follows:
It is optional depending on the gray color density, but usually 0.1 to 1.0 wt% of cobalt blue colorant to polyamide.
, preferably in the range of 2 to 0.8 wt% Oz, and carbon black colorant in the range of 0.01 to 0.30 iyt%, preferably in the range of 0.01 to 0.20 wt%. If the cobalt blue coloring agent is less than 0.1 wt%, not only will the blue color become pale, but also the weather resistance will decrease, making it unsuitable for practical use. This tends to cause problems such as increased pressure fluctuations in the spinning machine due to clogging of the filter medium, and the tenacity retention rate after weathering treatment also decreases. Regarding the carbon black colorant, if it is less than 0.01 wt%, the black color becomes pale, so it is insufficient to exhibit a gray hue;
．． On the contrary, if it exceeds 30 wt%, the blackness becomes too strong, resulting in a "blackish" and "less bluish" gray color.

In the present invention, colorants other than the above-mentioned colorants may be contained, but the amount of titanium dioxide is 0.3 wwt.
% or less. In order to improve the color "glossy", if the titanium dioxide content in the system exceeds 0.3 wt%, the "whitish" feeling will become strong and the clarity will not only decrease, but also the effect of reducing weather resistance will become stronger. So I don't like it. Further, it is also possible to add other colorants to adjust the gray color in an amount limited to 20-t% or less based on the cobalt blue colorant serving as the main colorant. If it exceeds 20wt%, various problems will occur in terms of spinning performance and weather resistance.

The red-purple (wine red) colorant used in the present invention is a perylene colorant represented by the following general formula (A), a quinacridone red colorant represented by the following general formula (B), and a carbon black colorant (carbon-containing colorant). (The rate is usually over 95%)
The amount added is arbitrary depending on the reddish-purple coloring density, but it is usually 0.2 to 2.0 wt% of the perylene colorant, preferably 0.5 to 1.0 wt%, based on the polyamide.
t% range, quinacridone red colorant 0.02-0
．． 5 wt%, preferably in the range of 0.05-0.30 wt%, carbon black colorant 0.01-0.30 wt%
, preferably in the range of 0.01 to 0.20 wt%.

(R in the formula is an alkyl group having 1 to 2 carbon atoms.) The brown colorant used in the present invention includes Fe,
0.1 as a main component (containing 80wt% or more) and carbon black colorant (carbon content is usually 95% or more).
% or more), and the amount added is arbitrary depending on the brown color density, but it is usually 0.1 to 1.0 wt %, preferably 0.2 to 0. 3
wt% range of carbon black colorant from 0.05 to 0.
50 wt%, preferably in the range of 0.1 to 0.30 wt%.

The dark blue coloring agent used in the present invention has the following general formula (C
), a quinacridone red colorant represented by the above-mentioned general formula (B), and a carbon black colorant (carbon content is usually 95% or more). It is optional depending on the coloring density of the phthalocyanine colorant, but usually 0.1 to 1.0 wt%, preferably 0.
．． 3 to 0.6 wt%, quinacridone red colorant 0.1 to 1.0 wt%, preferably 0.3 to 0.5
wt% range of carbon blank colorant 0.01-0.
30 wt%, preferably in the range of 0.05 to 0.15 wt%.

The polyamide to be colored in the stock solution in the present invention is a high polymer whose main chain is composed of amide bonds, and includes, for example, nylon 66, nylon 6, and copolymers thereof. In the present invention, it is essential to use polyamide containing a copper compound (hereinafter referred to as copper-containing polyamide), and if it is not copper-containing polyamide, there will not be much difference in discoloration after weathering treatment, but the strength of fiment The retention rate decreases, making it unsuitable for practical use.

The methods of adding colorants specified in the present invention include the polyamide polymerization process, blending and spinning during chip drying, direct addition of each colorant during spinning, and master pellets containing each colorant at a high concentration. There are methods such as blending a colorant with a base polymer and spinning it, or melt-blending a master pellet containing a high concentration of each coloring agent with a molten base polymer in a spinning machine.
A blending method using master pellets is particularly effective in terms of quality stability, operational stability, production cost, etc. In addition, if necessary, a dispersant, a heat resistance improver, etc. may be added for addition of these colorants.

The carpet defined in the present invention is a rug formed into a pile shape using a tufting machine, and there are no particular restrictions on its use in mats and the like in addition to the -a carpet.

[Function] Various pigments and dyes, from inorganic to organic, are generally known as colorants used for dyeing synthetic fibers. As a general property, inorganic colorants have excellent heat resistance and weather resistance, but have low coloring power, and to obtain the desired color density, they not only need to be added in a considerable amount, but also have poor color clarity. It is also known to be lacking. On the other hand, organic colorants have high coloring power (and good clarity, but there are few that have excellent heat resistance and weather resistance.From these characteristics, if the target hue is relatively dark, coloring Since the amount of the agent added is relatively large, it can be said that organic colorants are suitable for obtaining the desired hue and weather resistance.As a result of various studies from this point of view, the present inventors have determined that the base By using a polyamide polymer containing a polymer potash compound in combination with a coloring agent that has good weather resistance, it is possible to obtain the desired relatively clear hue, and it does not decompose even at the spinning temperature of the polyamide polymer, making it weather resistant. Compared to crimped yarns dyed with conventional metal-containing dyes, the dispersibility in polyamide polymers is also good, there is little variation in the pressure inside the spinning machine, and there are fewer yarn breakages during spinning and drawing, making production easier. They found that there was no problem in terms of sexuality.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

15.0wt% perylene colorant and 1% perinone colorant on Jitsushin Il
．． Polyamide master pellets containing 0 wt% and dispersant 10.0 wt% and base polymer nylon 66.
Pellets (copper content 70 ppm, sulfuric acid viscosity 2.8, titanium dioxide content 10%) are blended at a ratio of master pellet/base pellet - 1/19 (weight ratio),
1 was spun using a horizontal extruder spinning machine, then stretched, and then shrunk through a jet nozzle with a heated compressible fluid to obtain a 1300 denier 68 filament red spun-dyed yarn.Coloring agent contained in the spun-dyed yarn. The amount is 0.75wt% perylene colorant and 0.05wt% perinone colorant.
%. Fade meter 83°C for weather resistance evaluation
1200hr and sunshine weather meter 83°
The degree of discoloration after irradiation with C1250 hours was evaluated using a 5-level gray scale, and the strength retention rate of the yarn was also measured using an autograph.

The base polymer nylon 6 pellets (copper content 50 ppm, sulfuric acid viscosity 3
, 2, titanium dioxide content 0%) at a ratio of master pellet/base pellet = 1/19 (ffi amount ratio), and spun, stretched, and crimped in the same manner as in Example 1 to obtain a 1300 denier. A red spun-dyed crimped yarn with 68 filaments was obtained, and the same weather resistance evaluation was performed to measure the degree of fading and the tenacity retention rate of the yarn.

Disaster Kanshu perylene colorant 25.0wt%, dispersant 10.0wt
Polyamide master pellets containing They were blended in the same proportions, and spun, drawn, and crimped in the same manner as in Example 1 to obtain a red doped crimped yarn of 1300 denier 68 filament. The content of the coloring agent in the spun-dyed yarn was 1.25 wt % of perylene colorant, and the same weather resistance evaluation as in Example 1 was conducted to measure the degree of discoloration and the strength retention rate of the yarn.

Base polymer nylon 66 pellets (copper content 0%, sulfuric acid viscosity 2.6
, titanium dioxide content 0.05%) at a ratio of master pellet/base pellet - 1/19 (weight ratio), and spun, stretched, and crimped in the same manner as in Example 1 to obtain a 1300 denier 68 A red spun-dyed crimped filament yarn was obtained, and the same weather resistance evaluation was performed to measure the degree of fading and the tenacity retention rate of the filament.

Perylene colorant 30.0wt%, dispersant 10.0wt
Polyamide master pellets containing The mixture was blended, and subjected to spinning, stretching, and crimping in the same manner as in Example 1 to obtain a red doped crimped yarn of 1300 denier 68 filaments. The content of the coloring agent in the spun yarn was 3.0 wt % perylene colorant, and the same weather resistance evaluation as in Example 1 was performed to measure the degree of discoloration and the tenacity retention rate of the yarn.

Average side uperylene colorant 5.0wt%, dispersant 10.0wt%
A polyamide master pellet containing a polyamide master pellet and a base polymer nylon 66 pellet (copper component 70 ppm, sulfuric acid viscosity 2.8, titanium dioxide content 0%) were mixed in a ratio of master pellet/base pellet = 1/19 (weight ratio). The mixture was blended, and subjected to spinning, stretching, and crimping in the same manner as in Example 1 to obtain a red doped crimped yarn of 1300 denier 68 filaments. The content of the colorant in the dyed yarn was 0.5 wt % of perylene colorant, and the same weather resistance evaluation as in Example 1 was performed to measure the degree of fading and strength retention.

"Renguan Example" - Nylon 66 pellets (copper content: 70 ppm, sulfuric acid viscosity: 2.8, titanium dioxide content: 0%), which is a base polymer that does not contain a colorant, were spun, stretched, and crimped in the same manner as in Example 1. A regular crimped yarn of 1300 denier 68 filament was obtained, and the weather resistance was evaluated in the same manner as in Example 1 to measure the degree of discoloration and strength retention.

Nylon 66 pellets (copper content: 0%, sulfuric acid viscosity: 2.6, titanium dioxide content: 0.05wt%), which is a base polymer that does not contain colorants, was spun, stretched, and crimped in the same manner as in Example 1. A regular crimped yarn of 1300 denier 68 filament was obtained, and the same weather resistance evaluation as in Example 1 was conducted to measure the degree of discoloration and strength retention.

The results obtained for Examples 1 to 3 and Comparative Examples 1 to 5 are shown in Table 1.

As shown in Table 1, the red spun-dyed polyamide crimped yarn shown in Example 1.2 of the present invention exhibits excellent performance in color tone and weather resistance evaluation. In Example 3, the content of the perylene red colorant was 1.25 wt% (upper limit), and in this case, it had an excellent degree of fading, but the strong retention rate was lower than that of Comparative Example 4 (colorant) described below. and titanium dioxide free)
Moderate decrease (increasing the colorant content usually tends to decrease the tenacity retention). On the other hand, comparative example 1
The spun-dyed polyamide crimped yarns shown in Tables 1 to 5 each have defects as indicated by * in Table 1. In other words, in Comparative Example 1, which does not contain a copper component, the strength retention rate after irradiation with a fade meter decreases, and in Comparative Example 2, which has an extremely high colorant content, the color is deep red, and the colorant content is at the lower limit value. In Comparative Example 3, the fade meter and sunshine weather meter were inferior (the degree of fading after exposure was poor, and in Comparative Example 4, which contained a copper component but no colorant, and Comparative Example 5, which did not contain a copper component and a colorant). Poor strength retention after irradiation with Fade Meter and Sunshine Weather Meter.

1 Plate: A polyamide master pellet containing 0.0 wt% of Yotobengara colorant, 0.70 wt% of carbon black colorant, and 5.0 wt% of dispersant, and a base polymer of nylon 66 pellet (copper content: 70 ppm, sulfuric acid). Viscosity 2.
8. Titanium dioxide content: 0%) are blended at a ratio of master pellet/base pellet = 1/19 (weight ratio), spun with a horizontal extruder spinning machine, then stretched, and further injected with heated compressible fluid. The yarn was crimped through a nozzle to obtain a light brown doped crimped yarn of 1300 denier 68 filaments. The coloring agent content in the dyed yarn is 0.05 wt% of the Bengara coloring agent and 0.03 ht% of the carbon black coloring agent. As a weather resistance evaluation, the degree of discoloration after irradiation with a fade meter at 83°C for 200 hours and a sunshine weather meter at 83°C for 1250 hours was evaluated using a 5-level gray scale, and the strength retention rate of the yarn was also measured using an autograph.

Using the same coloring agent type and addition amount as in Example 1, the base polymer nylon 6 pellet (copper component 50 ppm, sulfuric acid viscosity 3.2, titanium dioxide content 0%) was used as a master pellet/base pellet. = l/19 (weight ffi ratio), and was spun, drawn, and wired in the same manner as in Example 1 to obtain a light brown doped crimped yarn of 1300 denier 68 filaments, which had the same weather resistance. Evaluation was carried out to measure the degree of discoloration and the strength retention rate of the yarn.

Comparison Al Nylon 66 pellets (copper content: 0%, sulfuric acid viscosity: 2.6
, titanium dioxide content 0,05 wt%), master pellet/base pellet = 1/19 (Xl
i amount ratio) and spinning in the same manner as in Example 1.
A light brown spun-dyed crimped yarn of 13oO denier 68 filament was obtained by stretching and crimping, and the same weather resistance evaluation was performed to measure the degree of discoloration and the tenacity retention rate of the yarn.

Le Comparison 1 Polyamide master pellets containing 2.00 wt% of Bengara colorant, 1.0 ivt% of carbon black colorant, and 5.0 wt% of dispersant and nylon 6 as base polymer
Pellets (copper content 50 ppm, sulfuric acid viscosity 3.2, titanium dioxide content 0%) were blended at a ratio of master pellet/base pellet - 1/9 (weight ratio), and spun and stretched in the same manner as in Example 1. A light brown spun-dyed crimped yarn of 1300 denier 68 filament was obtained by crimping, and the same weather resistance evaluation was performed to measure the degree of discoloration and the tenacity retention rate of the yarn.

Comparison±■ The same coloring agent type and addition amount as in Example 1 were used, and the base polymer was nylon 66 pellet (copper content 70 ppm).

(sulfuric acid viscosity 2.8, titanium dioxide content 0%) were blended at a ratio of master pellet/base pellet = 1/49 (weight ratio), and spun, stretched, and processed in the same manner as in Example 1.
A light brown spun-dyed crimped yarn of 1300 denier 68 filament was obtained by crimping, and the same weather resistance evaluation was performed to measure the degree of discoloration and the tenacity retention rate of the yarn.

1 comparison ±1 Nylon 66 pellets (W4 component 70 ppm, sulfuric acid viscosity 2.8, titanium dioxide content 0%), which is a base polymer that does not contain a colorant, were spun, stretched, and crimped in the same manner as in Example 1. A regular crimped yarn of denier 68 filament was obtained, and the same weather resistance evaluation as in Example 1 was conducted to measure the degree of discoloration and strength retention.

Comparison rule: Base polymer nylon 66 pellets that do not contain colorants (copper content 0%, sulfuric acid viscosity 2.6, titanium dioxide 0)
, 05wt%) was spun, drawn, and crimped in the same manner as in Example 1 to obtain a regular crimped yarn of 1300 denier 68 filaments, and the weather resistance was evaluated in the same manner as in Example 1 to determine the degree of color fading and strong retention. The rate was measured.

The results obtained in Example 1.2 and Comparative Examples 1 to 5 were
Shown in the table.

Table 2 As shown in Table 2, the light brown spun-dyed polyamide crimped yarns shown in Examples 4 and 5 of the present invention exhibit excellent performance in color tone and weather resistance evaluation. On the other hand, the spun-dyed polyamide crimped yarns shown in Comparative Examples 6 to 10 each have defects as indicated by * in Table 2. That is, in Comparative Example 6, which does not contain a copper component, the strength retention rate after fetometer irradiation decreases, and in Comparative Example 7, which has an extremely high coloring agent content, the color is dark brown, and the coloring agent content is extremely low. In Comparative Example 8, the degree of fading after irradiation with the fetometer and sunshine weather meter was poor, and in Comparative Example 9, which contained a copper component but no colorant, and Comparative Example 10, which did not contain a copper component and a colorant, the fetometer and/or Or the strength retention rate after sunshine weather meter irradiation is poor.

Polyamide master pellets and base polymer nylon 66 pellets (IP! component 70ppI11, sulfuric acid viscosity 2.8, titanium dioxide content 0%), master pellet/base pellet = 1/19 (weight 1 ratio)
The mixture was blended at a ratio of 1,300 denier, 68 filaments, and gray color spun crimped yarn was obtained by spinning with a horizontal extruder spinning machine, drawing, and crimping through a jet nozzle with a heated compressible fluid. The coloring agent content in the dyed yarn is 0.5 (1 mt%) for cobalt blue coloring agent and 0.025 wt% for carbon black coloring agent.For weather resistance evaluation, fade meter 83°C 1200 hr and sunshine weather meter were used. The degree of discoloration after irradiation at 83°C for 1250 hours was evaluated using a 5-level gray scale, and the strength retention rate of the yarn was also measured using an autograph.

Uramode Group 1 Using the same coloring agent type and addition amount as in Example 1, the base polymer nylon 6 pellets (copper component 50 ppm, sulfuric acid viscosity 3.2, titanium dioxide content 0%) were used as master pellets/base. The pellets were blended at a ratio of 1/19 (weight ratio), and spun, drawn, and #@shrinked in the same manner as in Example 1 to obtain a gray spun-dyed crimped yarn of 1300 denier 68 filaments, which had the same weather resistance. Evaluation was carried out to measure the degree of discoloration and the strength retention rate of the yarn.

Comparison ② Nylon 66 pellets (copper content: 0%, sulfuric acid viscosity: 2.6
, titanium dioxide content 0.05 wt%) at a ratio of master pellet/base pellet = 1/19 (1 weight ratio), and spun, stretched, and crimped in the same manner as in Example 1 to obtain a 1300 denier. A gray spun-dyed crimped yarn with 68 filaments was obtained, and the weather resistance was evaluated in the same manner to measure the degree of fading and the tenacity retention rate of the yarn.

Comparison ② Nylon 6 pellets (copper content: 50 ppm, sulfuric acid viscosity: 3
．． 2, titanium dioxide content 0%) at a ratio of master pellet/base pellet -1/9 (uffi ratio), and spun, stretched, and crimped in the same manner as in Example 1 to obtain a 1300 denier 68 filament. A gray spun-dyed I-1 curled yarn was obtained and subjected to the same weather resistance evaluation to measure the degree of discoloration and the tenacity retention rate of the yarn.

A polyamide master pellet containing 2.0 wt% of cobalt blue colorant, 0.3 wt% of carbon black colorant, and 10.0i+t% of dispersant, and a base polymer nylon 66 pellet (copper content 70 ppm, sulfuric acid viscosity 2.8, titanium dioxide content 0%) at a ratio of master pellet/base pellet = 1/19 (gravity fi ratio), and spun, stretched, and crimped in the same manner as in Example 1 to obtain 1300 denier. A gray spun-dyed crimped yarn with 68 filaments was obtained, and the weather resistance was evaluated in the same manner to measure the degree of fading and the tenacity retention rate of the yarn.

Comparison ■ Nylon 66 pellets (copper content: 70 ppm, sulfuric acid viscosity: 2.8, titanium dioxide content: ff10%), which is a base polymer that does not contain a colorant, were spun, stretched and drawn in the same manner as in Example 1.
A regular crimped yarn of 1300 denier 68 filament was obtained by crimping, and the same weather resistance evaluation as in Example 1 was performed to measure the degree of discoloration and strength retention.

Base polymer nylon 66 pellets that do not contain colorants (copper content 0%, sulfuric acid viscosity 2.6, titanium dioxide 0.
05ht%) was spun and drawn in the same manner as in Example 1, and 1 was shrunk to obtain a regular crimped yarn of 1300 denier 68 filaments, and the weather resistance was evaluated in the same manner as in Example 1 to determine the degree of fading and strength retention. was measured.

The results obtained in Example 1.2 and Comparative Examples 1 to 5 were
Shown in the table.

As shown in Table 3, the gray spun-dyed polyamide crimped yarn shown in Example 6.7 of the present invention exhibits excellent performance in color tone and weather resistance evaluation. On the other hand, the spun-dyed polyamide crimped yarns shown in Comparative Examples 11 to 15 each have defects as indicated by * in Table 3. That is, in Comparative Example 11, which does not contain a copper component, the strength retention rate after fetometer irradiation is lower, and in Comparative Example 12, which has an extremely high content of cobalt blue colorant, the color is dark, and the content of cobalt blue colorant is In Comparative Example 13, which has extremely low color fading after irradiation with the fetometer and sunshine weather meter, Comparative Example 14, which contains a copper component but no colorant, and Comparative Example 15, which does not contain a copper component and a colorant, The strength retention rate after irradiation with fetometer and/or sunshine weather meter is poor.

1 bird spot eperylene colorant 10.0wt%, quinacridone red colorant 2.0wt% and carbon black colorant 0.8wt%
wt%, dispersant 10.0 wt% and base polymer nylon 66 pellets (copper component 70 ppm, sulfuric acid viscosity 2.8, titanium dioxide content 0%), master pellet/base pellet = Blend at a ratio of 1/12 (weight ratio),
A reddish-purple spun-dyed crimped yarn of 1300 denier 68 filaments was obtained by spinning, drawing, and crimping in the same manner as in Example 1, and the same weather resistance evaluation was conducted to measure the degree of discoloration and the strength retention rate of the original yarn. . The colorant content in the dyed yarn is 0.77wt% perylene colorant and 0.1wt% quinacridone red colorant.
5ivt%, carbon black colorant 0.06wt%
It is.

2. Bengara colorant 5.0wt%, carbon black colorant 3
．． Polyamide master pellets containing 50 wt% and dispersant 10.0 wt% and base polymer nylon 6
6 pellets (copper content: 70 ppm, sulfuric acid viscosity: 2.8, titanium dioxide content: to%) were blended at a ratio of master pellet/base pellet = 1/19 (weight ratio), and spun and stretched in the same manner as in Example 1. , crimped and 13
A brown spun-dyed crimped yarn of 00 denier 68 filament was obtained, and the same weather resistance evaluation was conducted to measure the degree of discoloration and the tenacity retention rate of the yarn. The coloring agent content in the dyed yarn is 0.25wt% of Bengara coloring agent and 0.18w of carbon black coloring agent.
t%.

Polyamide master pellets and base containing 5.0 wt% of phthalocyanine 1-based colorant, 4.5 wt% of quinacridone red colorant, 1.2 wt% of carbon black colorant, and 10.0 wt% of dispersant. Polymer nylon 66 pellets (copper content 70 ppm, sulfuric acid viscosity 2.
8, titanium dioxide content 0%) at a ratio of master pellet/base pellet = 1/12 (fifHt), and was spun, stretched, and crimped in the same manner as in Example 1 to obtain a 1300 denier 68 filament. A dark blue original dyed crimped yarn was obtained, and the same weather resistance evaluation was conducted to measure the degree of fading and the tenacity retention rate of the original yarn. The content of colorants in the dyed yarn is 0.38 wt% of phthalocyanine blue colorant, 0.35 wt% of quinacridone red colorant, and 0.09 wt% of carbon black colorant.

The results obtained for Examples 8 to 10 are shown in Table 4.

As shown in Table 4, the magenta, brown, and dark blue color spun-dyed polyamide crimped yarns shown in Examples 8, 9, and 10 of the present invention exhibit excellent performance in color tone and weather resistance evaluation.

〔Effect of the invention〕

The thus obtained sprue-dyed polyamide crimped yarn, in which the pace polymer of the present invention is a polyamide polymer containing a copper compound and also contains a colorant with good weather resistance, has extremely excellent weather resistance, and has excellent acid resistance and alkali resistance. The material is suitable as a pile material for carpets, and has good color quality on the pile surface when made into a carpet, without causing any hindrance to production processes such as spinning, drawing, and crimping.

Claims (4)

[Claims] (1) A spun-dyed polyamide crimped yarn characterized in that the base polymer is a polyamide polymer containing a copper compound and also contains a colorant with good weather resistance. (2) A red spun-dyed polyamide yarn containing 0.25 to 1.25 wt% of a perylene-based red colorant, and wherein the base polymer is a polyamide polymer containing a copper compound. crimped thread. (3) In polyamide spun-dyed yarn, Bengara colorant 0.0
2-0.20wt%, carbon black colorant 0.01
-0.20 wt%, and is characterized by being a polyamide polymer containing a base polymer potassium compound. (4) In polyamide spun-dyed yarn, cobalt blue colorant 0.1 to 1.0 wt%, carbon black colorant 0
．． 01 to 0.20 wt%, and the base polymer is a polyamide polymer containing a copper compound.