JPS5813742A - Dark and light dyeable polyester fiber product - 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 provides n types of dyes with different stainability. This invention relates to textile products made of ester fibers that can be dyed in shades of light and shade under normal pressure. More specifically, among the n types of dyeable true ester fibers, 1 to m-1 of the fibers are polyethylene terephthalate homoprimer fibers that can be dyed with disperse dyes under normal pressure. This invention relates to polyethylene terephthalate fiber products that can be dyed in different shades under normal pressure.

Since 11, fiber products that can be dyed in shades of lyeethylene terephthalate fibers, which produce a so-called heathered effect, have been produced using 13 types of fibers that can be dyed in different shades of light and shade.
Methods have been adopted such as changing the degree of polymerization, spinning conditions, drawn yarn conditions, heat treatment conditions, fineness, or content of matting agent of i, l to m-1 types of fibers. However, with such a method, it was not possible to obtain deep colors such as navy blue, black, and dark brown under normal pressure, that is, at temperatures below 100° C., even for fibers that were to be dyed haze. In other words, in conventional polyethylene terephthalate fibers, even if the amount of dye used is increased without using a preservative called a carrier, the practical dyeing time, that is, the dyeing time that is industrially and economically reasonable (the maximum (usually about 1 hour), other fibers such as acrylic, nylon, vinylon, wool, etc.
For materials such as cotton and recycled cellulose fibers, only extremely light dyeing densities were obtained. Therefore, even if a textile product with a shading effect is created using the method described above, when it is dyed under normal pressure (of course, ordinary polyethylene terephthalate fibers are dyed only with disperse dyes), the shading effect will not be clearly visible. If the dyeing temperature is increased to 120 to 130°C, which is the dyeing temperature for ordinary polyethylene terephthalate fibers, a deep color can be obtained, but it is difficult to dye even the fibers that should be dyed in light colors. In addition to the disadvantage that when using a preservative called carrier 4t, there is no clear difference in shading, just like when dyeing at high temperatures, Streaks may occur due to insufficient emulsification;
The carrier is irritating and harmful to the human body; it worsens the working environment at the Kume dyeing factory; it is difficult to treat dyeing wastewater; and the carrier remains in the fibers, making it difficult to remove. Kernels that may reduce the intensity of light emitted from dyed products and residual carriers that emit a pungent odor;
Furthermore, there are many disadvantages, such as the risk of skin damage when dyed products are worn, and changes in the mechanical properties of ethylene terephthalate fibers caused by carrier dyeing, such as a decrease in strength and an increase in elongation.

In order to solve these drawbacks, we used a conventional dye-resistant 0/lyethylene tere-7 tallate fiber on one side, and on the other we used a 4-coat fiber containing bittern ether or isophthalic acid containing expanded metal sulfonate groups. 1', 11117/IJ ester fibers have been proposed, but although these modified esters improve dyeability, the dye density is not necessarily sufficient when dyeing at normal pressure, i.e., 100°C. However, the upper mold table and spinning were difficult, the cost was low due to high raw material costs, or the excellent mechanical and thermal properties of lyethylene tere-7 tallate were deteriorated, etc. There were disadvantages such as poor dyeing properties.In the end, the above-mentioned ink dyeing by chemical modification of ?rimer was achieved by mixing a third component, which can serve as a dyeing seat, in the mer. Therefore, it is inevitable that the excellent heat resistance and mechanical properties of lyethylene terephthalate will deteriorate.

In addition, when dyeing different shades of light and shade by mixing with other fibers that cannot be dyed with disperse dyes, such as cotton, hemp, recycled fiber line, wool, etc., use the disperse dye and the dye that should dye the other fibers at the same time. It is necessary to use the same bath method or the two-bath method where dyeing is done separately, making color matching difficult. In addition, delicate dyes such as nylon, which are dyed under normal pressure with disperse dyes, can also be used with polyethylene terephthalate and other disperse dyes when mixed with acrylic, cellulose acetate fibers, etc. to dye different shadings. Even if the same disperse dye is dyed on dyeable fibers, the hue will often be different, and at the same time, disperse dyes dyed on nylon, acrylic, and cellulose acetate fibers will have a different color than those dyed on polyethylene terephthalate. Also, the color saturation is usually poor.

Furthermore, the above-mentioned mixed products of ester fibers and other fibers have mechanical properties such as wrinkle resistance, washability, and wearability, bleachability, and quick-drying properties, and are made only from ester fibers. It is far inferior to other textile products.

The present inventors have overcome these drawbacks of the conventional technology, and have improved the dyeability of polyethylene terephthalate fibers by making it possible to dye them with excellent dyeing properties, in particular, allowing atmospheric pressure dyeing with disperse dyes, and having excellent dyeing toughness. As a result of conducting research from a microstructural perspective on polyethylene terephthalate fibers, which also have the desirable properties of We have discovered that terephthalate fibers can be dyed with disperse dyes under normal pressure and that their shrinkage during diving is extremely small. By mixing this 4-lyethylene terephthalate homo-f reamer fiber, which can be dyed with disperse dyes under normal pressure, with polyethylene terephthalate fiber, which is difficult to dye under normal pressure, it is possible to dye the mixture in the form of a mixture with light and dark colors under normal pressure. It is a heathered ester fiber product that can be dyed, that is, it can be piece-dyed, and when it is dyed, the dark colored parts of the fiber product will emerge, highlighting the shading and reducing the apparent density of the fiber product. The present invention was completed based on the discovery that the material should be thicker in the case of lower layers, threads, and ground thickness in the case of cloth.

That is, the present invention uses a mixture of a polyethylene terephthalate fiber that is essentially a small monopolymer of I-lyeethylene terephthalate, and can be dyed with a disperse dye under normal pressure, and a conventionally known l-lyethylene terephthalate fiber that is difficult to dye under normal pressure. To provide a textile product that can be dyed with a disperse dye under normal pressure to produce a clear shading effect, and a dyed product thereof.

In addition to the above two types of fibers, it is possible to mix copolyester fibers.6 It is possible to mix copolyester fibers with the above two types of fibers. Both of these fibers and conventional polyethylene terephthalate fibers that are difficult to dye under normal pressure may be multifilaments or monofilaments that have not been processed to make them bulky, or they may be long fibers that have been processed to make them bulky. However, it may also be in the form of a tow, staple or spun yarn. Further, two or more of these may be used in combination, such as mixed yarn, mixed twisted yarn, mixed spun yarn, or front ring yarn, and clothing fabrics made by mixing or knitting the various yarns mentioned above,
Curtains, chair tension, cloth for tensioning, carpets, etc. may also be used.

? Homo f-rimer of lyethylene terephthalate I
In order for the Lyester fiber to maintain sufficient mechanical performance as the above-mentioned textile product, the initial temperature at 30°C is 7. ．．
-Ka! 55. /d or more is required. In order to show the possibility of good dyeing with disperse dye under normal pressure, the measurement frequency is 11011z.
The peak temperature (T
max) is 105°C or less, and -J (1) f-ri value [(-δ),. ] is required to have a value exceeding 0.135. By the way, is this structural characteristic value not subjected to bulky processing? This is especially true for polyethylene terephthalate fibers, which have undergone normal false twisting, friction false twisting, and injection bulking processing, and have [(-δ) mix ] of 0.08 or more, and ( -J) Yo! A value that satisfies the relationship ≧("rmx-105)X10-2 is required.

As a characteristic value expressing the structure of the amorphous region, the above Tv
max and (tmδ)ml! The value of is a good guideline.

T1□ is usually located on the 50°C high side of the positive transition temperature,
(−δ)m is related to the amount of molecular chains in the amorphous region in which thermal motion is activated at the temperature T□.

In the present invention, 'rma machining and (m#), , xa mean values related to mechanical absorption (αa absorption) discovered due to micro-Brownian motion of molecular chains inside the amorphous region. Ethylene tera yf
iv-111-'Me Tmax #1130Cヮ, (1
=-δ)1. x is 0.13 or less. In addition, the 'rmax of conventional 4-polyethylene terephthalate fibers subjected to bulk processing is 135°C or higher, (-1) 1. X is 0.13
The following is below.

The present inventors investigated the relationship between the structure of the delicate amorphous region in small polyethylene terephthalate polymers and dyeability, and found that in order to be able to be dyed with a disperse dye under normal pressure,
In the case of fibers that have not been bulked, (1) (-δ),
,,,>o, taste In and (2)? ,,.

It is necessary that the temperature is 5105° C. and (3) that the microstructure has high thermal stability during heating. 1 In addition, in the case of bulky processed six fibers, (l) (-δ) ≧ o, m at og
&X To] and (2) (-δ)1. ! ≧(T, , -10
5) It is necessary to satisfy the relationship: X 10-2. Isn't it dyeable with conventional atmospheric pressure dyeing? In the case of fibers other than homo-f reamer of polyethylene terephthalate, there is no fiber that satisfies the above three-row property.In other words, fewer fibers than the conventional pomo-f reamer of polyethylene pre-7talate satisfy the above-mentioned three-row property. In order to further improve the dyeability of fibers that have not been subjected to bulk processing, such as the homolimer of polyethylene terephthalate that can be dyed under normal pressure according to the present invention, there was no such thing that could be dyed under normal pressure. 1□ is o, 14
It is preferable that the above is t, and (-δ) for bulky processed fibers, □ is preferably o and 11 or more. In the present invention, the ethylene terephthalate s which can be dyed under normal pressure with a disperse dye! In order to obtain the mechanical properties of the fiber, it is necessary that the initial modulus at <30C as described above be 55 p/d or more. Here, the initial modulus and lath at 3(l) are the dynamic elastic modulus (E', o
).

(-δ)1. When X becomes sharp, in order to maintain shape retention, it is generally necessary to increase the value of 30.

If ``150'' is less than 55 P/d, the thermal stability of the chain line structure will decrease, the dimensional stability will also be poor, and the fiber will become soft.

ζ A#I, which is a medium polymer of polyethylene terephthalate that can be dyed under normal pressure with a disperse dye having the above characteristics.
As a result of further examining the relationship between its structure, square properties (strength, elongation, initial modulus, lath, dynamic elastic modulus), and dyeability, the following points were clarified.

Disperse dyes) Crystallinity (
Xe), size of microcrystal of (010) plane AC8),
The degree of crystal orientation (CO) of the (010) plane and the (010) plane are both related to the mechanical properties of the fiber. /d or more), for fibers that have not been subjected to bulk processing, Xl must be 3
It is preferable that the content is 0- or more, the mu C8 is 351 or more, and the CO is 859 g or more.

More preferably, Xc is 70% or more and MuCS is 40/
Above, CO is 90- or more. Here X@, AC8%
CO is a value measured by X-ray diffraction using the method described below. The conventional ethylene terephthalate fiber that has not been subjected to bulk processing has an Xs of 50 to 70%, □AC8a
301 or less, C0a85-951.

Next, in the l-lyethylene terephthalate fiber J* which is not subjected to the bulking process and which can be dyed at normal pressure and which constitutes the ester fiber product that can be dyed at normal pressure of the present invention, polarized light having an electric field vector in the direction of the fiber axis is The central refractive index (nz(o
)) is smaller than 1.70 and greater than or equal to 1.65,
It has appropriate elongation (20 to 70) and dyeability. The optimal ("40)) range is 1665 to 1,68
It is. In addition, the average birefringence (Δn) was determined by
Initial modulus of tallate fibers greater than 5 SIPld at 30°C. In order to have a lath, it is preferably 35 x 10 or more, but on the other hand, from the viewpoint of structural stability against heat, it is desirable to have a diameter of 50 x 10 or more. In addition, from the viewpoint of dyeability and color fastness, preferably 120 x 1
0 or less, more preferably 85 x 10 or less. When Δa becomes 120 x 10 or less, 150~
Decrease rate of dynamic elastic modulus (E') in the temperature range of 220°C (the values of Bi at 150°C and 220°C are respectively E'
, 5°1e IC'22° binding E'2. . /E'I S
. 220/”'I S
O becomes larger than 0.75. In other words, the structure becomes stable against heat. Also, the degree of dyeing fastness is improved. Furthermore, those with a non-n of less than 85×10 2 have excellent atmospheric dyeability.

Average refractive index at the center of the fiber ("/(0)) and refractive index at a distance of 0.8 times the radius from the center of the fiber"
/(0,8) or 11/(-6, the so-called local uniformity of the fiber that satisfies the following relationship for The fact that the local average refractive index distribution is symmetrical with respect to the center of the fiber means that the minimum value of the average refractive index n/ is ( sho)-10X 10
) or more, and the difference between /(0,1) and S m/(OJ) is 50×10 or less, preferably 10×10−5 or less, and the above-mentioned 11.
/(0)・”/(0,1)・yo-o,s)'t/(
Values such as 0,1IaO)-Δn were measured using an interference microscope according to the method described later.

In addition, in the fiber made of 4-lyethylene terephthalate homolrimer, which is not bulk-processed and can be dyed under ordinary pressure with a disperse dye, which constitutes the ester delicate product which can be dyed in shades of light and shade at ordinary pressure according to the present invention, the 220 The smaller the mechanical loss tangent (tma22g) at °C is, the better, and the decrease in the initial modifier lath due to temperature rise will be smaller. −δ
2. . When is 0.25 or less, the amount of decrease in the initial modulus and rast becomes modestly small. It becomes a fiber with a stable structure against TP heat.

The bulky processed ethylene terephthalate fibers of the present invention that can be dyed in shades of light and shade under normal pressure/vaginal step 1 - can be dyed under normal pressure with disperse dyes used in products are produced by the above-mentioned bulky processed and transparent fibers that can be dyed using a conventional method. □False twisting can be made by jetting or pressing. This bulky finish can be dyed under normal pressure with disperse dye! As mentioned above, the polyethylene terephthalate fiber has an initial mono-lath of 55 fA or more at 30°C, (-)wax of 0.08 or more, and (-1-1X≧(T, ,, x -105)X10”
This satisfies the following two relationships. In addition, bulk-processed I-lyethylene terephthalate fibers that can be dyed at atmospheric pressure with disperse dyes have an initial modulus and lath of 55 P/L at 30°C.
The average birefringence (Δn) is usually 35 for runs showing 4 or more.
It is fine if it is more than X10-', but this condition does not necessarily meet 5
Initial modulus is not a necessary and sufficient condition to provide an initial JE-/&las of 5P/d or more.

A sufficient condition for the lath to be 55jF/d or more is that the value of Δn is 45 x 10" or more, and (-Riyu's wife,
9.- or less. Nine Xe%ACe%CO both have a strong correlation with the external deformation of the fiber and the thermal stability of the structure. Therefore, the bulky processed fiber has sufficient strength (3P/
11 or higher), initial modulus, 9th KFiX@1630s or higher with initial modulus (55 IPla or higher), mu CB of 381 or higher, and CO of 38 or higher. More preferably, Xs is 75 or more, mu cm is 451 or more, and CO
is 85- or more. The bulky fibers of conventional false-twisted fibers have an X@ of 20 to 30, a mu C8 of about sol, and a co of about 85.

Also, can the present invention be used for deep and light dyeing under normal pressure? Is it possible to dye under normal pressure with the disperse dyes that make up Lyester fiber products? The average birefringence (ΔnΣ) of the polyethylene tele-7 tallate bulk processed fiber is as described above (45X10 or more, but from the viewpoint of thermal stability, 50X10 or more is preferable, and from the viewpoint of dyeability and color turbulence, it is 110XIO). The following is Sarani' * L (ti85
'tso should be 0.75 or more! 17111 has better thermal stability. Further, those having Δn smaller than 85×10 2 have extremely excellent normal pressure dyeability.

One of the microstructural features is that the bulky processed polyethylene terephthalate fiber, which can be dyed under atmospheric pressure with disperse dyes, has a significantly smaller ΔmFi of 7 m compared to the ΔmFi of 120xlo-' or more for conventional bulky processed fibers. It is.

In the present invention, the fine fibers made of polyethylene terephthalate polymer trimer can be dyed under normal pressure with disperse dyes or can be dyed under normal pressure with disperse dyes.
(Federal Republic of Germany 5. + Inil product name, C, 1, D1
sp@rm@a1ms 56), dye usage amount 3
% ovf, bath ratio 50 times, pH 6 (adjusted with acetic acid 11).
Dispersant ZOE C-X Par-7L [Product name of Seikagaku Kogyo Co., Ltd.]
) Content I P/lc) 100 in dye baths of different compositions
Summary of dyeing at ℃ for 120 minutes, 1 of dyes dyed on fibers
The dye exhaustion rate is expressed by the following formula.

The dye exhaustion rate of conventional 4-lyethylene terephthalate fibers under the above dyeing conditions is 30 to 45 inches. Therefore, the ratio of dye absorption rates between the pressure-dyeable polyethylene terephthalate fiber used in the present invention and the conventional I-polyethylene terephthalate fiber is about 2=1. In this case, when measuring the dye exhaustion rate, each fiber is dyed separately under the same dyeing conditions, so when comparing the shading of those fibers, it is approximately 2:1.
It looks like the dyeing concentration ratio. However, in the case of the I-liester fiber product of the present invention which can be dyed in shades of light and shade under normal pressure, the fibers to be dyed in a dark color and the fibers to be dyed in a light color are incorporated into the same textile product, so they can be easily dyed in the same dye bath. Since dyeable and difficult-to-dye fibers are input and dyed at the same time, easily dyeable fibers will exhaust the dye relatively quickly, and when difficult-to-dye fibers are about to exhaust the dye, the dye concentration will increase. Todoroki Hajime] It's getting smaller.

Therefore, the difference in shading, that is, the dye density of easily dyed and difficult to dye 4-polyethylene terephthalate fibers, appears much more strongly than when both fibers are dyed separately under the same conditions.

Is it possible to dye shades of light and shade under normal pressure using the present invention? A preferred method for producing fibers made of homo4rimer of polyethylene terephthalate, which can be dyed under normal pressure with disperse dyes having the above-mentioned fine structure constituting the polyester fiber products, is disclosed in a patent application filed in 1973 by the present applicant.
6-46407. As described in this petition, fibers made of polyethylene terephthalate small polymers spun at a spinning speed of 4,000 m/min or more are subjected to dry heat treatment at a temperature within the range of 220°C to 300°C. You can get it by doing so. Alternatively, it can also be obtained by heat treatment using moist heat (using superheated steam, saturated steam, or hot water within a temperature range of 180° C. to 140° C.). The fibers obtained in this way and subjected to the heat treatment described above are dyeable under normal pressure, but these fibers can also be bundled into strands or cut into staples to be used as a spinning raw material.

Furthermore, the false twisting process is carried out using a system spindle in a conventional manner.
Alternatively, bulk processed fibers can be obtained by frictional false twisting, bulk processing using a pushing method, bulk processing using a rubbing method, and bulk processing using a jetting method. All of these have the above-mentioned fine structure and can be dyed at normal pressure with disperse dyes.

It should be noted that polyethylene terephthalate rimer, which is a raw material for the fiber used in the present invention and can be dyed under atmospheric pressure with a disperse dye, can be obtained by a known polymerization method. Additives used in regular 4-liester fibers, such as matting agents, stabilizers,
The polymerization degree is not particularly limited as long as it is within the normal range for fiber formation.It is made of a homopolymer of polyethylene terephthalate that can be dyed under normal pressure with the disperse dye used in the present invention. When spinning fibers, the polymer viscosity, spinning temperature, and atmosphere under the spinneret are
By appropriately adjusting the IIJ cooling method and take-up speed]
By controlling the cooling solidification of the I remer flow spun through the spinneret and the change in shape, fibers with good spinnability and desired properties can be obtained. In particular, control of cooling and solidification of spun fibers is important, and in order to obtain spinnability and desired properties, rapid cooling assimilation, especially cooling and solidification by low-temperature cooling air perpendicular to the fibers from one direction, is not desirable.

Figure 1 shows l which can be dyed under normal pressure with the disperse dye constituting the present invention.
An example of an apparatus for producing fibers made of homo I remer of polyethylene terephthalate is schematically shown. Molten polyethylene terephthalate is spun from a spinneret (not shown) in a heated spinning head 2 and cooled in the atmosphere to form a fiber bundle 1.

A tubular heating area 3 surrounding the spun fiber bundle 1 is provided below the spinneret, and a fluid suction device 4 for cooling and suctioning the fiber bundle 1 is provided below it. .

Nine fiber bundles 1 pass through a tubular heating zone 3 and a fluid suction device 4
After passing through the lubricant application device 5, it is taken up by a take-up roller -6.

In the present invention, the spinning speed refers to the surface speed of the take-off roller 60 in Fic. The taken-off fiber bundle is either continuously wound or once wound around a take-up roller 6, then pulled out by a pair of fiber bundle feeding rollers 7, and adjusted to an appropriate temperature within the temperature range of 220 to 300°C. The fiber bundle passes through a heating cylinder 8, is guided by a pair of fiber bundle feeding rollers 9, and is wound up by a IIk take-up roller 10. At this time, by adjusting the rotational speeds of the fiber bundle feed rollers 7 and 90, the fiber bundle is stretched to an appropriate elongation rate in the heating cylinder 8 and subjected to heat treatment.

Fibers made of a homopolymer of ethylene terephthalate spun at a spinning speed of 4,000 m/min or more can be heat-treated by the following method in addition to the above-mentioned heat treatment method. That is, the spinning speed is 4.0 by the take-up roller 6.
00! After winding at a speed of 2/min or more, the fiber bundle is assembled into a tow and then heat treated, or the tow is crimped and cut to form a staple and placed in a can for heat treatment, or the staple is opened. A method of heat-treating the fiber in the form of a woven sliver or top can also be adopted. Of course, the heat treatment method may be either a method using dry heat or a method using warm heat as described above.

Figure 2 shows the spinning speed 4. Go (FIG. 2 is a schematic diagram showing an example of a method for thermally treating fiber bundles, tows, sly/4-, etc. of polyethylene terephthalate fibers made under spinning conditions of 1 m/min or more with superheated steam. In FIG. 2, 11 is A fiber bundle, tow, or sliver of polyethylene terephthalate, spun at a spinning speed of 4,0 O-4 or higher, is pulled up by a pair of feed rollers 12 and then pulled up by a guide roller 13. reach. Guide rollers 13 guide the fiber bundle, tow or sliver to a thermal treatment device 15 . The thermal processing device 15 has a slit 14 at the entrance and a slit 14' at the exit so that the temperature inside the thermal processing device 15 is not influenced by the outside atmosphere. The wet heat treatment device 15 is provided with a large number of slits 16 on the inner wall of the passageway of the treated fiber cone so that superheated steam can be ejected from the upper and lower surfaces at the same time. Additionally, heaters 17 are installed above and below inside the thermal treatment device 15 to reduce the distribution of overheated steam OIl.

On the other hand - the r-di pressure generated in the iller 24 is approximately 10 #/m”
The saturated steam of
It becomes superheated steam at ℃. The superheated steam is sent to the moist heat treatment device 15 through the valve 20, and is adjusted to 5 so that the temperature does not drop and the temperature distribution does not become wide (by the heater 17), and is heated to the fibers 11 to be treated through the slit 16. The fiber bundle subjected to the thermal treatment, the tow-straddling sliver 11, is passed through the p guide roller 18 by the pickpocket 14' and taken off by the take-off shear roller 19.

In this way, the spinning speed is 4. Spun at OOO+m/min or more, dry heat t'220~300qct or wet heat t'180~2
I/I1. The fiber can be dyed under normal pressure with a disperse dye having the above-mentioned fine structure. By mixing this with conventional polyethylene terephthalate fibers by a known method, it is possible to produce the single ester fine 11A which can be dyed in shades of light and shade under normal pressure according to the present invention.

The 4-reprocessed stell fiber product of the present invention, which can be dyed in shades and shades under normal pressure, is produced by first producing a blended yarn in a spinning process from the above-mentioned normal pressure dyeable/IJ ethylene terephthalate fiber and conventional polyethylene terephthalate fiber. Method of weaving; method of making, knitting, and gassing twisted yarn or mixed fiber yarn.Using the normal pressure dyeable standard ethylene terephthalate fibers for the weft yarns, or using conventional polyethylene terephthalate fibers for the weft yarns, or warp yarns thereof. A method of making a mixed weave fabric using the reverse method; A method of aligning the pressure-dyeable polyethylene terephthalate fiber and the conventional polyethylene terephthalate fiber and simultaneously feeding the fibers to interweave; a method of making the pressure-dyeable polyethylene terephthalate fiber and the conventional It is produced by a method in which polyethylene terephthalate fibers are alternately fed and knitted together; or a method in which interknitting or interweaving is performed using intertwisted yarns, mixed fiber yarns, or blended yarns, but is not necessarily limited to these methods.

In short, is it essentially a homo of /'y' ethylene terephthalate? It may be a single ester fiber J111 product that is a mixture of a conventional polyethylene terephthalate fiber and a polyethylene terephthalate fiber that can be dyed under normal pressure with a remer-friendly disperse dye.

In the present invention, in order to emphasize the shading effect of the dyed product, it is preferable that the content of the ethylene terephthalate fibers, which can be dyed under normal pressure with the disperse dye having the above-mentioned fine structure, is 90% by weight or less. More KIE Mashuke 70
Weight - less than or equal to.

When emphasizing the light and shade effect, if there are too many areas of the textile product that should be dyed in dark colors, the shades of the dyed product will be clearly visible when viewed up close, but when viewed from a distance of more than 1 meter, the shades will become blurred. It appears to have a uniform color tone.

That is, if the dark color portion is 90- or less, the phenomenon of the shading described above being buried will be reduced. On the other hand, if there are few dark colors and many light colored areas, there is no such tendency, and the dark colored areas are about 1%.
The bII color looks clear under light magnification. Is it possible to dye under normal pressure with the disperse dye of the present invention? The conventional 4
Is it possible to dye shades by mixing with Liethylene Tele 7 tallate fiber? Liester Textile Products Co., Ltd. can be dyed under normal pressure, so it does not require special pressure-resistant dyeing equipment, reducing equipment costs; low dyeing temperatures reduce energy costs; and dyes that easily decompose at high temperatures Many advantages can be found, such as improved use, reduced shrinkage during the dyeing process, and lower heat-setting temperatures before dyeing.

In addition, the polyester fiber products obtained by K in this manner and capable of being dyed in shades of light and shade under normal pressure can be dyed with disperse dyes under normal pressure using the usual method, that is, without using a carrier, so the above-mentioned carrier dyeing method can be used. Of course, it does not exhibit the various disadvantages of yarn, and the state of the yarn with a shaded effect, that is, the dyed intertwisted yarn, blended yarn, blended yarn, which has a shaded effect, is handmade yarn, raw yarn for karite, raw material yarn for yarn-dyed knitted fabrics, It is used as yarn for chair upholstery, curtain yarn, etc. In addition, dyed fabrics such as intertwisted yarns, blended yarns, and blended yarns that can be dyed in light and shade are #! After being dyed, interwoven fabrics made of fibers that can be dyed in light colors under normal pressure and fibers that can only be dyed in light colors are similarly used for clothing fabrics, indoor fabrics, etc. 41. In the case of carpets, carpets that can be dyed in shades of light and light are difficult to dye because high-pressure dyeing equipment is not widely used.
IM-.

Furthermore, the polyester fiber product of the present invention that can be dyed in shades and shades has better mechanical properties, especially wrinkle resistance, washability, and wearability, compared to textiles that can be dyed in shades and shades using polyester fibers and other fibers. It has excellent bleachability and quick drying properties, and can be dyed with only disperse dyes, and has excellent melt and dye durability.Furthermore, the delicate product of the present invention can be dyed in shades of light and shade under normal pressure. The 4111 effect when dyed is that it has a richer potash and mucus feel compared to conventional dark and light dyed fabrics. That is, book w1: homof of 4-lyethylene terephthalate that can be dyed under normal pressure with a disperse dye having the above-mentioned fine structure used in @.
The continuous shrinkage rate of the remaryoru fiber is 39g or less,
On the other hand, conventional 0@dyeability-lyeethylene terephthalate embroidery is 6
~8%, so if a yarn or fabric made by mixing these is dyed at normal pressure around 100°C, it is possible to dye it at normal pressure with the disperse dye used in the present invention due to this difference in shrinkage rate. A phenomenon occurs in which polyethylene terephthalate, which has a low shrinkage rate, floats up, whereas conventional polyethylene terephthalate, which has a high shrinkage rate, sinks into the textile product. That is, this phenomenon occurs when the mosquito fiber product is a thread, and after dyeing, the thread becomes thicker than the original thickness compared to a thread made only of conventional polyethylene terephthalate fibers. Furthermore, when the mosquito fiber product is a cloth, the original thickness is increased compared to a cloth made only from conventional polyethylene terephthalate fibers, in other words, a product with a rich texture and elasticity can be obtained. Furthermore, as mentioned above, because the dark colored parts stand out, the shading effect is similar to that of a flat thread or cloth (the difference in shading is the same compared to a flat thread or fabric, but the unexpected effect of making the hills appear even more magnified) also appears. I'll come.

A method for measuring the structural properties of the 4-lyethylene terephthalate fibers constituting the /'J ester delicate product of the present invention will be described below.

In the margins below, the mechanical loss tangent (-J) and the dynamic modulus of elasticity are shown.
+ron) Using DDV NetWi dynamic viscoelasticity measurement device, sample amount 0.1-11v1 measurement frequency 11011x
, at each conductivity in dry air with a heating rate of 10°C/min.
1, and measure r. -1 peak temperature CTm*X) from the taaa-temperature curve The same height as C (ti
e')wax) is obtained. Figure 3 shows a polyethylene terephthalate fiber (6) that can be dyed under normal pressure with a disperse dye used in the present invention, a nine-bulk yarn (e) obtained by false twisting the polyethylene terephthalate, a conventional 4-tiered fiber/0 terephthalate fiber, and a conventional Polyethylene terephthalate false twisted yarn (
(9) A typical example of (b) is schematically shown. FIG. 4 schematically shows a typical example of a V-temperature curve (in the figure).

俤), (C), and (B) are the same as in Figure 3. ・〈Average refractive index (1/#111) and average birefringence (lI&)〉Transmission quantitative interference microscope (for example, German It is possible to observe and observe the distribution of nine mean refractive wheels from the side of the fiber by the interference fringe method using an interference microscope manufactured by Carl Zeiss Jena Co., Ltd. apply to The refractive index of a fiber is characterized by an index of refraction for polarized light with an electric field vector parallel to the fiber axis and an index of refraction for polarized light with an electric field vector perpendicular to the fiber axis. All measurements described here are performed using green light (wavelength Jw5).
49mm) is used.

Inject a mounting medium between an optically uniform slide glass and a cover glass that has a refractive index that provides a shift in interference fringes within a range of 0.2 to 2 wavelengths and is inert to the fibers. Then, immerse the sample fiber in the mounting medium. The fiber is placed with its axis perpendicular to the optical axis of the interference microscope and the interference fringes. This interference fringe pattern will be photographed and analyzed at approximately 1,500 times magnification.

In Figure 5, the refractive index of the fiber encapsulant is N, and oI on the outer periphery of the fiber.
:Refraction company V between La'-a' (mae wa kayo), 8'-8
The thickness between # is t1, the wavelength of the light beam used is λ, the interval between parallel interference fringes of Nodo and Kugutsukund (corresponding to 11) is D1, and the deviation of interference fringes due to fiber is d, then the optical path difference r is rw = (
d/I))J=(ir7(or mq)-N)t. Therefore n7 (t or fly) = 7/d
+N is established. If the cross-sectional shape of the fiber is circular, the thickness t is given by 7r to ν1 using the coordinate X and the radius R.

If the radius of the fiber is 8, the optical path difference at each position from the fiber center 0 to the outer periphery R is calculated by the refractive movement of the fiber at each position/(
or n) can be found. Let X be the distance from the center of the fiber to each position, 9:00X = x/IL
w-0, that is, the refractive index at the center of the fiber is the average refractive index (n7 (Φ is 9 is called town prayer ρ, X is 1 on the outer periphery)
The other parts have values between θ and l, but for example, the refractive index at the point X -0,8! 1/(Qa)
(or expressed as “Yo ((L8))”.

The average refractive index n/(c+) and n (Φ) and the average birefringence (4m) are expressed as Δn"/(...-n (0). In Fig. 5, 31 is the fiber , 32 shows interference fringes caused by the mounting medium, and 33 shows interference fringes caused by fiber mk:.

Figure 6 shows the distribution of n of each fiber.
f), (b) Ofi indications are the same as in the case of FIG.

In Figure 1116, the horizontal axis is the distance from the center X = mR
s The vertical axis shows Kl/value. x-0 is the center of the fiber,
x-1 and X-1 are points on the outer periphery of the fiber. In the case of a non-circular cross section, the thickness t is not given as a function of only 8 and X, so a separately measured value is used. As a method for measuring t, it is calculated using the following formula from the measured value of 9r obtained using different types of mounting medium.
x-7'm)/(Ns-Nt) where N1 jN is the refractive index of the mounting medium 1 and 2, r.

rs is Rita-Dage measured in mounting medium 1 and 2.

It is.

(Size of microcrystal Cg):) By symmetric reflection method) The X-ray diffraction intensity in the equator direction is determined as 111, and x! AC8 is calculated from the li1 diffraction strong go diffraction angle dependence curve.

The X-ray diffraction intensity was measured using an X-ray generator manufactured by Rigaku Corporation (RU-20).
0PL) and f niometer (8G-9R), a scintillation counter for the counter tube, and a pulse height analyzer for the needle part, C1-[line (wavelength λ 1. Toro 81) made monochromatic with a nickel filter was measured. It is measured using The fiber axis of the fiber sample is x! 1 Made of aluminum so that it is perpendicular to the diffraction plane! Set it to Ruhoru〆1. At this time, the thickness of the sample is set to about 0.5-. 30k
Operate the X-ray generator at Ve 80゛, scan secondary speed 1 @ / min, chart speed 10 gourd / min, time cons 1 @ 1711 seconds, dipersient slit 7, regi V
0.3 m, scan, taring, to L”
2# records the diffraction intensity from 35° to 7°.

The full scale of the meter is set so that the obtained diffraction intensity curve falls within the scale.

Curved ethylene terephthalate fibers generally have three major reflections in the range of diffraction angles 2#=7° to 26° on the equator. (100), (010) from the low angle side.

(ITO) surface. K for AC8 is an analogy and LJ
, "Polymer X! 11a Folding" by Alexan Mae, Kagaku Doujin Publishing, Chapter 7 Using the Scherrer (u@b@rr@r) formula.

Connect the diffraction intensity curves between 2#=70 and 2#=35° with a straight line and draw a perpendicular line from the 0 diffraction peak O apex to the baseline. Write on the line.

Draw a horizontal line through the midpoint of the diffraction intensity curve across the diffraction peaks, intersecting two shoulders of the peaks of the curve if the major reflections are well separated, or one shoulder if the separation is poor. Intersect with chisel. Measure the width of this peak. If it intersects only one shoulder, measure the distance between the intersection point and the midpoint, and double it. If it intersects 29 shoulders, measure the distance between both shoulders. These measured values are converted into radians and used as the line width. Furthermore, this line width is corrected using the following formula. β- to Satsu'=i- Here, B is the measured value of the fin width, b is the Broadninder constant, and is the twin width (half-width) in radians of the peak of silicon single crystal (2) (111) plane reflection. The size of a microcrystal (Cm) is given by C11 (X) as a proverb: λ/llxm
It is given by l. Here K is 1. λ is the X@O wavelength (
1,54181), β is the line width after correction, - is puttu,
The diffraction angle is 2-1.

<Crystallinity <xe>> From the X-ray diffraction intensity curve obtained in the same way as the measurement of the size of microcrystals, connect the diffraction intensity curves of 2# = 7° and 2# - 35° with a straight line. Pace fin. 2 as shown in Figure 7
1 = The valley around 20° is the apex, and it is connected with a straight line along the low-angle side and the high-angle side to separate it into a crystalline part (,) and an amorphous part, and is crystallized by the area method according to the following formula. Find the degree Xc.

<Crystal orientation (CO)> Rigaku Corporation jIll X-ray generator (RU-2QOPL)
, fiber sample measuring device (FB-3), f3 ohmeter (8
G-9), a scintillator and a counter are used for the counter, and a pulse height analyzer is used for the counting part. 2. It is made monochromatic with a Kel filter, and α-rays (wavelength λ = 1.54181) are used for the Cu-9 in the azimuth direction. Measure the X-ray diffraction intensity curve. ' I-lyethylenetere-7-talate fibers generally have s on the equator line.
'GO has a predominant reflection, but the (010) plane reflection is used to measure the degree of crystal orientation (CO).

The diffraction angle 2# of the (01G) plane is the diffraction intensity II in the equatorial direction.
IIl! Determined from. The above-mentioned Xls generator is
Operate at 0 kV and 20 mA. Attach the sample fibers to the fiber sample measuring device so that they are parallel to each other.

Adjust the thickness of the sample to approximately 0.5 cm. The value Kf niometer is determined from the diffraction intensity curve in the equatorial direction and set at 92#. Using the symmetrical transmission method, the azimuth direction is scanned at -307+30@, and the diffraction intensity in the azimuth direction is recorded. Furthermore, record the diffraction intensities in the azimuth directions of -180" and +180@.At this time, the scanning speed is 4 degrees/min, the chart speed is 10 layers, the time constant/second, the collimator 2 φ, the receiving pin, and the vertical direction. Width 19-1
The width is 3.5cm.

To obtain CO from the obtained diffraction intensity curve in the azimuth direction, first take the average value of the nine diffraction intensities obtained at +180@, and use the horizontal line passing through this value as the baseline. Drop the baseline K11l line from the top of the peak and find the midpoint of its height. Draw a horizontal line passing through the midpoint, measure the distance between the two intersections of this line and the diffraction intensity curve, and convert this value into the angle 31
The degree of crystal orientation is given by co-((180°-I()7180 x 100), where the value converted to ('')K is defined as the orientation angle H(0).

Dye exhaustion rate> Disperse dye Resolin Blue FBL (Product name of Pyxl AG, Federal Republic of Germany, C, I, Dlsp@rm@11u 5
6) in a dye bath with a composition of 35G oat, bath ratio 50 times, -6 (adjusted with acetic acid), dispersant Disper T, L (v4 Seikagaku Kogyo Co., Ltd. product name) 19/j. After dyeing at 100℃ for 120 minutes, collect the dye solution, calculate the amount of dye in the remaining solution based on the absorbance, and subtract this from the amount of dye used for dyeing. The exhaustion rate ■ was calculated. The sample fibers for dyeing were scoured in a 21/l aqueous solution of the scouring agent Scoreroll FC (product name of Kako Atlas Co., Ltd.) at 60'CK for 20 minutes, dried, and conditioned at 20°C.
65111H12) (left for 48 hours) was used.

<Dyeing rate> A sample dyed in the same manner as in the dye absorption rate evaluation except that the dye concentration was 1% owf and the staining time was 90 minutes was stained with sodium hydrosulfide 1 ti/l.
, 50 times the bath ratio with an aqueous solution of 111/l of sodium hydroxide,
'I evaluated the product after reduction cleaning at 80℃ for 20 minutes.

The color fastness is determined by the light fastness (JllllL-104).
4), abrasion resistance (based on JI8 L-0849), sublimation plate resistance (based on JI8 L-0834)
was evaluated.

Tensile strength and elongation> Tensilon manufactured by Toyo Goldwin Co., Ltd. (T*ns11on
)w-i-20IE tensile testing machine initial length 53I (
However, for fibers with 111 shrinkage such as bulky fibers, they were stretched to 5 amK), measured at a tensile speed of 205 m/min, and the ring water shrinkage rate > 0, 1 &, Let L be the length of the sample under the same load, remove it from the load, treat it underwater for 30 minutes, and then measure it again under the same load. The ring water shrinkage rate is expressed by the following formula.

Ring water shrinkage rate (4) = L, nil

Example 1 3 in a mixed solvent of phenol/tetrachloroethane
A homopolymer of polyethylene terephthalate having an intrinsic viscosity of 0.62 at 5°C was spun at a spinning temperature of 300°C using the apparatus shown in Figure 1.
It is spun from a spinning rod with a hole diameter of 0.35 mφ and a number of holes of 360, and is cooled and solidified by a 22°C air flow K supplied from the entire periphery of the fiber bundle in parallel to the running direction of the fiber bundle, and then a finishing agent is applied. Then, it was wound at a speed of 4400m7 minutes and 75d/'
A yarn of 36 f was obtained. Next, the yarn was made to pass through without touching the heating cylinder for heat treatment shown in the first FIAK, and the temperature inside the heating cylinder was adjusted to 1249°C, and the elongation rate was 1.
Heat treated at 9 m for 0.85 seconds. Next, after spinning at 4.400 spins/min, 0.85 at 249°C.
Heat treated for 75 seconds,
d/36 f yarn was processed using a false twisting machine equipped with two heaters: a false twist heater length of 0.8 meters and a stabilizer heater length of 0.6 m, with a temperature of one false twist heater of 200'C and a stabilized heater. The temperature was set at 190° C., and the spindle Ilc skeleton yarn was false-twisted with a number of twists of 3, a S OOT/s1 draw ratio of 1.125, and a yarn speed of 146 Wv%. The physical properties of the obtained false twisted yarn are shown in Table 1 together with the properties of the yarn before false twisting.

From the results in Table 1, it can be seen that the yarns before and after false twisting are dyeable under normal pressure, and have sufficient mechanical and thermal properties as textiles for clothing. 0.85 at 249℃ after spinning at 400 spins/min
751/36f yarn of 4-thickness tyrene terephthalate fiber that is heat-treated for seconds and can be dyed under pressure, and a yarn that can be dyed under pressure after false twisting the yarn, and 3 after spinning at 1,300 m = 7 minutes. A knitted fabric with a lanolide structure was knitted using a flat knitting machine using conventional polyethylene terephthalate fibers stretched one by one and 75d/36f yarns. This knitted fabric was cut out with 3Il disperse dye Meiyani, XFast A Iolet 2R (Mitsubishi Kasei product name, C, 1, Dlsp*rs).
@Viol@t 18) 1.71 (to dyed object), bath ratio 70 times, voice 6 (adjusted with acetic acid), staining i1 [dyed at 100°C for 60 minutes 9.

The nine dyed knitted fabrics have a heathered pattern with sufficient shade differences. Also, the average thickness of this fabric is 0.35a*, which is 9.

For comparison, two 754/36f yarns of the conventional 4-layer, tylentele 7 tallate fiber, which had been drawn 3.3 times after spinning at 1,300 m/min, and a skeleton yarn were prepared by a conventional method. One twisted yarn, a total of three yarns, was made into a knitted fabric with the same texture and dyed under the same conditions.

This dyed yarn has almost no difference in shade, and the average thickness of the knitted fabric is 0.
28 wounds and 62 friends.

Example 2 (v) Homo/IJ j- of 4-lyethylene terephthalate of Kao, As was prepared using the spinning apparatus shown in FIG. The fibers are spun, cooled and solidified by a flow of 20°C air that is supplied from the entire circumference of the fibers in parallel to the running direction of the fibers, then an oil agent is applied and the fibers are wound at a speed of 4,300 m/min to 900 d/min. A fiber bundle of 600 f was obtained. 200 of these fiber bundles were bundled into a flat plate through a comb-shaped guide and 1B0
．． Q001/120, 0OOofO tow. This tow was heat treated with superheated steam at 200° C. for 0.7 seconds under O, S* elongation in the heat treatment apparatus shown in FIG. 2 for 0.7 seconds. From the physical properties of this tow shown in Table 2, it can be seen that this tow can be dyed under normal pressure and has sufficient mechanical performance as a spinning raw material fiber.

Next, this tow of 180,000 d/120,000 d/120,000 4-polyethylene terephthalate fiber, which can be dyed under normal pressure, is crimped in a stuffer & box using the conventional method, and then with a circle cutter. Cut into 38cm length, 1.5d x 38-
got the stagl. This stager a o q4,
1.5 d of 4-lyethylene terephthalate fiber of i rice
A staple of 38 x 38 mm was prepared using a blended yarn of 50 count (cotton count) with a blend ratio of 70 by a conventional cotton spinning method. This blended yarn was made into small pieces weighing 1 g, and the disperse dye Miketon I Liester Scarle, )RR (product name of Mitsubishi Kasei Co., Ltd., C, I Dispers@R@d 54) was applied in 1.
5- (for the dyed material), bath ratio 100 times, -6 (adjusted with acetic acid), dyed at a dyeing temperature of 100°C for 80 minutes. Ta. Also, the average diameter of this dyed thread is 0.01! It was sam.

For comparison, we made a spun yarn of the same count using only 1.5d x 38mm staples of the conventional polyethylene terephthalate fiber mentioned above and dyed it using the above method. Of course, it was not dyed in shading, and the average diameter of the dyed yarn was The former was 0O13a*, and the former had a much more I-mu feeling.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of the spinning and heat treatment process of I-lyethylene tere-7 tallate fiber constituting the present invention.
In the figure, 1 is a fiber bundle, 2 is a spinning head, 3 is a tubular heating area, 4 is a fluid suction device, 5 is an oil application device, 6 is a take-up roller, 7 is a fiber bundle feeding roller, 8 is a heating cylinder for heat treatment, Reference numeral 9 indicates a fiber bundle feeding roller, and lO indicates a fiber end removal roller. FIG. 2 is a schematic diagram of a heat treatment apparatus using superheated steam used in an example of the present invention. In FIG. 15 is a thermal treatment device, and 16 is a thermal treatment device for preventing excessive leakage of superheated steam in the moist heat treatment device 15 and suppressing temperature fluctuations. A
17. For spouting superheated steam in the ll device. ), 17 is a heating heater for preventing the temperature of the superheated steam inside the wet heat geological device from decreasing and making the temperature distribution uniform, 18 is a guide roller, and 19 is a take-up shear roller. Figure 3 shows the mechanical loss. It is a graph schematically representing a tangent (-J)-temperature curve. FIG. 4 is a graph schematically showing a dynamic elastic modulus (E')-temperature curve. FIG. 5 is an example of an interference fringe pattern used to measure the radial refractive index (II/n) distribution within the cross section of the fiber. In the figure, (&) is a cross-sectional view of the fiber, 伽) is an interference pattern,
In the figure of p4 turn, 31 is a fiber, 32 is an interference fringe due to the mounting medium, and 33 is an interference fringe due to the fiber. FIG. 6 is a schematic diagram showing an example of the refractive index (-/) distribution in the radial direction of the fiber. In Figures 3 and 4: □ In Figure 6, 4 polyethylene terephthalate fiber which can be dyed under normal pressure with the disperse dye used in the present invention, and (II) 3 polyethylene terephthalate fiber subjected to false twisting. (0 is the conventional I-lyeethylene terephthalate fiber, I) is the value of the conventional I-lyeethylene terephthalate false-twisted fiber, respectively. Figure 747 is a graph showing an example of an X-ray diffraction intensity curve of I-lyethylene terephthalate fiber. Here, the field is a crystalline region, and b is an amorphous region. Patent applicant: Asahi Kasei Kogyo Co., Ltd. Patent agent Akira Aoki Patent attorney Kazuyuki Nishidate Patent attorney Yuyuki Yamaguchi Patent attorney Akira Yamaguchi Page 6 1'! 7m

Claims (1)

[Claims] 1. In a textile product consisting of 4-ester fibers having electrodes with different dyeability (where n is an integer of 2 or more), 1 to n-1 of the ester fibers are substantially 4-ester fibers. The polyethylene terephthalate fiber has an initial modulus and lath of 5517d or more at 30°C, and the measurement frequency is 110.
Peak temperature of mechanical loss tangent (-δ) at hK (Te1
．． When X) is below 105℃, the peak value of -δ ((mJ
) Wax) has a value exceeding 0.135, non-bulk-processed fibers that can be dyed at normal pressure with disperse dyes and/or fibers have an initial modulus at 30°C and a lath of 55jF/11 or more.To! l Ttmax (℃) and (-1)! lI&
Between X (tw+')@61≧(T,,,-105)
satisfies the formula XIO and (-1)1. A single ester fiber product capable of being dyed in shades of light and shade at normal pressure, characterized by having a value of X of 0.08 or more, and being a bulky fiber that can be dyed with a disperse dye under normal pressure. 2. Single ethylene terephthalate fibers that can be dyed with disperse dyes at atmospheric pressure are spun at a speed of 4.0001 g/g.92
Fibers formed by heat treatment using dry heat at a temperature of 20°C to 300°C and/or fibers obtained by performing a heat treatment using dry heat at a temperature of 220°C to 300°C after spinning at a spinning speed of 4ρOOm/e or more, and further using a conventional method The /IJ ester delicate product that can be dyed in shades of light and shade at normal pressure according to claim 1yL, which is a fiber that has been subjected to bulk processing. 3. Fibers made of e/reethylenete, phthalate fibers that can be dyed under normal pressure with disperse dyes, spun at a spinning speed of 4,000 m/min or more, and then heat-treated with moist heat at a temperature of 180°C to 240°C, and/or F! The conventional fiber according to claim 1, which is a fiber obtained by spinning at a spinning speed of 4,000 m/min or more, heat-treating with moist heat at a temperature of 180° C. to 24,010° C., and then bulking it by a conventional method. A 4-reprocessed stell fiber product that can be dyed in one shade using pressure. 4. Non-bulky polyethylene terephthalate fibers that can be dyed at normal pressure with disperse dyes have a density of 0.14 or more (
imJ )@@z value, and average birefringence (1 m
) #50 x 10-' to 120xlO polyester fiber product which can be dyed in shades of light and shade at normal pressure according to claim 1. 5. Temperature 1.8 of non-bulky ethylene terephthalate fiber that can be dyed with disperse dye under normal pressure is 100℃
The following is acceptable, crystallinity (X・) is 30- or more, (010
) The microcrystal size (CS) of the ) plane is 351 or more, and the degree of crystal orientation (CO) of the (010) plane is 85s or more. Lyester textile products. 6. The In of the ester fiber is 45X1G to 110X, which has been bulked and can be dyed with disperse dye under normal pressure.
10-' The polyester fiber product according to claim 1, which can be dyed in shades of light and shade at normal pressure. :' 7. The coloring temperature (T,.) of each preester fiber that has been subjected to bulk processing that can be dyed with a disperse dye under normal pressure is 115.
℃ or less), and the crystallinity (X@) is 35- or more,
The size of the microcrystal (Act) of the (010) plane is 38X or more, and the degree of crystal orientation (CO) of the (010) plane is 80- or more. Bori ester products. 8. The In of the ester fiber is 45X10 or more, which has been subjected to a bulking process that can be dyed with a disperse dye under normal pressure.
m&X is 105°C or less, and (tI11δ). . is 0.11 or more, and Xc is 70% or more, (oio
The size of the microcrystals of the ) plane (CS) is greater than or equal to so1, and (
010) A polyester fiber product capable of being dyed in shades of light and shade at normal pressure according to claim 1, wherein the degree of crystal orientation (CO) of the 010) plane is 85- or more. 9. / A four-reinforced stell fiber product capable of being dyed in shades of light and shade at normal pressure according to any one of claims 1 to 8, wherein the re-ester fiber product is thread-like. □. ,. 88,1□': Engineering, engineering, oh my. Engineering. II! II@11j7':! g8. , Oh 7, Yo 1. . Polyester fiber products that can be dyed in shades of light and shade under normal pressure. 11. A four-reinforced stellate fiber product capable of being dyed in shades of light and shade at normal pressure according to any one of claims 1 to 8, wherein the reester fiber product is a carpet.