JPS5921717A - Mixed polyester type multifilamentary yarn - Google Patents

Abstract

PURPOSE:The titled multifilamentary yarns, consisting of plural polyester filaments, consisting of a polyester consisting of specific components, and having no difference between the filament length (in dyeing) with a different shrinkage in boiling water, and having a bright hue and fullness without the difference in dyeing. CONSTITUTION:Mixed polyester type multifilamentary yarns, consisting of two or more polyester type filament groups having >=3% shrinkage (%) in boiling water and substantially no difference between the filament length and difference in dyeing, the polyester being a copolyester containing 80mol% or more ethylene terephthalate units, and 0-5mol%, based on the acidic component, metallic salt of 5-sulfoisophthalate component and 1-10wt%, based on the above-mentioned copolyester, glycol of the formula (R is 4-20C bifunctional aliphatic group, alicyclic group or aromatic group; i and j are integers 2-4; m and n are integers and 1<=m+n<=15) as a glycol component.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel mixed polyester multifilament that has a clear color tone and a feeling of fullness, and has no difference in dyeing between constituent filament groups.

Conventionally, the method of mixing or blending filaments with different hot water shrinkage rates, making them into woven or knitted fabrics, and heat-treating them in this state to give them bulge or bulkiness has been widely used to give fabrics a silky appearance and feel. has been done.

However, these different shrinkage mixed fiber yarns are manufactured using different drawing conditions in order to provide different hot water shrinkage rates.

Therefore, there is a substantially large difference in dyeing between the filament groups, and when these mixed multifilaments are used to make a woven or knitted fabric, this woven or knitted fabric has short-cycle dyeing spots called irritability.

On the other hand, in order to prevent this, when the filament groups are combined in such a way that there is virtually no difference in dyeing, the difference in hot water shrinkage rate between the filament groups is small and the swell or bulkiness of the woven or knitted fabric becomes insufficient. .

The object of the present invention is to provide a new polyester-based mixed multifilament that does not have these drawbacks of the prior art. To this end, the present invention has the following configuration. That is, the present invention consists of at least two types of polyester filament groups that have hot water shrinkage coefficients (chi) different by 3 or more and have substantially no difference in yarn length and substantially no difference in dyeing, and the polyester is A copolymerized polyester containing 80 moles or more of ethylene terephthalate units, in which 00 to 5 moles of the acid component is a 5-metallic sulfoisophthalic acid component, and the glycol represented by the general formula (1) is used as the 1-glycol component. 1 to 1 for copolymerized polyester
This is a polyester mixed multifilament characterized by containing 0% by weight.

HO-f-O11210←R-0÷0jH2jOmo1-
---(z) Here, in the formula, R represents a divalent aliphatic group, alicyclic group, or aromatic group having 4 to 20 carbon atoms, and 1
-%j is an integer from 2 to 4, and mSn is the same or different integer satisfying 1≦m+n≦15.

The present invention will be explained in detail below. In the present invention, the hot water shrinkage rate (%) between the constituent filament groups is preferably 3 or more FiI.
It is necessary to make the difference by S~15%.

The length is preferably 5 or more in order to exhibit appropriate bulge and bulkiness.1 Preferably, the length is 5 or more. The reason for setting it to 15% or less is to prevent the occurrence of grains and to prevent the surface of the S-knitted fabric from becoming rough. When consisting of three or more types of polyester filament groups, the largest hot water shrinkage rate (
%) and the hot water shrinkage rate (%) of the polyester filament group having the smallest hot water shrinkage rate (chi) so that it falls within the above range. do. In addition, the hot water shrinkage rate (ch) is
Using an epsilon meter manufactured by Toyobo Engineering Co., Ltd., the sample length was 5. Q +: +++ N treatment temperature was 9.
5℃, processing load 0.0059/asO mode, n=10
This is the average value of the values measured twice.

Furthermore, the number of filaments constituting one filament group may be one or more. However, the number of filament groups with a small hot water shrinkage rate is set to 5 or more, preferably 8 or more, taking into consideration the feel of the fabric. Regarding the fineness (denier) of a single filament, if you make the filament thicker if it has a high hot water shrinkage rate and make it thin if it has a low electric hot water shrinkage rate (%), the thin filament will come out on the fabric surface and create a fabric that has a soft feel and has a waist. On the other hand, if a fabric with a large hot water shrinkage rate (chi) is made thin and a fabric with a small hot water shrinkage rate (%) is made thick, the fabric will be flexible and have a large repulsive force.

Of course, filament groups having the same fineness and different hot water shrinkage rates (%) may be combined. The fineness (denier) of one filament is not particularly limited, but it is 0.5 to 5 from the texture of the fabric when used for general clothing.
It is preferable to set it in the range of d.

Further, as for the cross-sectional shape, a 3- to 5-lobed cross-section is preferable in order to provide a silky luster, but other shapes such as a U-shape or a 0-shape, or a round cross-section may also be used.

Next, it is necessary that there be substantially no difference in yarn length between the constituent filament groups. This is because if there is a difference in yarn length due to unwinding, unwinding tension may fluctuate or the yarn may get caught on guides, etc., which is unfavorable in terms of passability in subsequent processes. In the present invention, the yarn length difference between the filament groups of the polyester mixed multifilament does not appear until it is heat-treated in the fabric state, and there is no yarn length difference between the constituent filament groups before heat treatment. be. The fact that there is virtually no difference in yarn length means that a total of 5 filaments wound 8 times on a wrap reel with a frame circumference of 1 m were visually judged under the load of the 1st age. This means that there is no difference in yarn length such as sagging. .

Substantially no difference in dyeing is necessary in order to obtain a fabric of uniform tone. Difference in dyeing between filament groups means that no difference in dyeing is observed when a tube knitted fabric is dyed under the following conditions and judged visually.

Dye Eisenriki Chiron Blue-73RLH2%o
wf(Aizen 0achi1on Blue, F
3RLH Hodogaya Chemical (Cationic dye) Acetic acid (10%) Sodium acetate (10%) 2 CC/V bath ratio 1:10
．． Time: 97°C x 60 minutes.
x Fast Blue BGFS manufactured by Mitsubishi Kasei ■, disperse dye) Dispersant Disper TL (Dispe5! TI + manufactured by Meisei Chemical) 1% bath ratio 1:100. Time: 97°C x 60 minutesNext 1Polyester fibers with virtually no difference in dyeing and virtually no difference in yarn length even if the hot water shrinkage rate (%) is 80
A copolymerized polyester containing more than 10% of acid components, with 0 acid components
0 to 5 mole is the 5-metal sulfoisophthalic acid component, and the glycol component represented by the general formula (1) is 1 to 10% by weight based on the copolymerized polyester.
It includes.

wo+a1H2+o→艷R-0-+ Oj H2j o
-+-H...(1)m
In the n formula, R is 2 with a carbon number of 4 or more and 20 or less
1. j is an integer from 2 to 4, m and n are the same or different integers, and 1≦m+
, n≦15 0 Here, if the glycol represented by formula (1) is less than 1% by weight above, the hot water shrinkage rate (%)
The difference in dyeing increases with respect to the difference in color, and the ink dyeing effect also decreases. Furthermore, if the copolymerization amount of the glycol of formula (1) and the 5-metal sulfoisophthalic acid component is more than 10% by weight, the operability of spinning and stretching and twisting will deteriorate and the melting point of the polyester will decrease, resulting in poor light resistance and hydrolysis resistance. Deteriorate. A more preferable amount of these components is that 5-metal sulfoisoheptalic acid or its ester-forming derivative is 1 to 3% of the dicarboxylic acid component.
The amount of glycol is 2 to 8% by weight based on the copolyester. The metal of the 5-metal sulfoisophthalic acid or its ester-forming derivative is preferably an alkali metal. Of these, sodium is the most common. It also has superior dyeability compared to polyester, and can be dyed in deep and vivid colors with dispersive dyes or basic dyes at temperatures below 100°C without using a carrier agent.

As described above, according to the present invention, a new polyester mixed multifilament with a clear color tone and a feeling of fullness and no dyeing difference between constituent filament groups can be obtained, and woven or knitted fabrics using this yarn can be dyed in a short cycle. A remarkable effect was achieved in that a woven or knitted fabric with no spots and a clear color tone and a feeling of fullness was obtained.

Example 1: R shown in formula (1) is a 2,2 dimethylpropylene group, and 1e j = E s m + n = 6 glycols are used in a weight ratio of 4,5-sodium sulfoisophthalic acid dimethyl ester to the polyester. Polyester copolymerized at a molar ratio of 2.3% with respect to the acid component was spun using an extrusion type spinning machine at a temperature of 290°C and a winding speed of 1800.
Fff/III [IIs 84 d/24 f and 70
Two types of undrawn yarns of d/8 f were obtained. These undrawn yarns were placed in a conventional drawing machine under the following conditions and simultaneously drawn.

Stretching ratio: 2.8 Hot plate temperature: 150°C Hot roller temperature: 80°C Note: At this time, the 84 d/24 f yarn was brought into contact with the hot plate, but the 70 d/8 f yarn was brought into contact with the hot plate. Using a guide, the two were drawn together with a draw roller without touching the hot plate. At this time, S84 d/24 f and 70d
The undrawn yarn with /8f was drawn separately under the above conditions, and the dyeing difference and hot water shrinkage rate (ch) of the resulting yarn were measured, and the data shown in the table was obtained. For comparison, the values obtained when a single thread made of 100% ordinary polyester/l/l was spun and drawn under the same conditions are shown as a comparative example. The hot water shrinkage rate was measured using the epsilon meter described above, and the difference in dyeing was determined by knitting tube knitted fabrics adjacent to each other.The fabric of the present invention was dyed with the cationic dye described above, and the fabric of the first comparative example was dyed with the cationic dye described above. Dyeing with a dispersible dye and sensory evaluation of dyeing difference: 10 = no dyeing difference, 0.5 = slightly observed, 1 = slightly noticeable, 1.5 = noticeable, 2.0 = extremely noticeable I scored it.

As is clear from the table, in the yarn according to the present invention, almost no difference in dyeing was observed despite the large difference in hot water shrinkage rate.

At this time, the relationship between the difference in hot water shrinkage rate (%) and the dyeing difference (I/Ratsuki) between filament groups is shown as 1 comparative example as AS and the present invention as B. In the diagram, O means that the irritation is not noticeable at all, 0.5 means that the irritation is hardly discernible, S1.0 means that the irritation is slightly noticeable, 1.5 means that the irritation is noticeable, and 2.0 means that the irritation is very noticeable. . As is clear from the figure, in the present invention, even if the difference in the hot water shrinkage rate (chi) becomes large, the irritation is almost indistinguishable, and the effects of the present invention are clearly seen.

Next, using these mixed multifilaments,
Weaving 2/2 twill with 83 yarns/1n and 110 yarns in the weft, the weight loss rate is 3 with 1 concentration of 5% caustic soda solution (90℃).
After treatment to obtain a color of 0%, normal dyeing and finishing were carried out. The woven fabric using the yarn of the present invention had a brighter color than the comparative example, had no unpleasant irritation, was soft and fluffy, and was like a silk habutae, and was well received.

[Brief explanation of drawings]

The figure shows the relationship between the difference in hot water shrinkage rate (chi) and irritation. A is a conventional 100% polyester yarn and B is a yarn of the present invention. Patent applicant: Toyobo Co., Ltd.

Claims (1)

[Claims] Both are composed of two types of polyester filament groups, and the polyester is composed of 7 ethylene tartate units and 80
A copolymerized polyester containing more than 10% of the acid component, in which 0 to 5% of the acid component is a 5-metal sulfoiso7talic acid component, and 1 glycoyl component is a copolymerized polyester containing glyfur represented by the general formula (1). 1~10 times Ml
A polyester mixed multifilament characterized by comprising b. HO(-01H210+-R-0-(-Oj
-)-H... (1) z -n In the formula 1, R represents a divalent aliphatic group having 4 to 20 carbon atoms, an aliphatic group, an alicyclic group, or an aromatic group. 1, j is 2~
is an integer of 4, m% n is the same or different integer and 1≦
Satisfies m+n≦15. 2. The polyester mixed multifilament according to claim 1, wherein the difference between the largest hot water shrinkage rate (%) and the smallest hot water shrinkage rate (%) is in the range of 5 to 15%.