JPS5936721A - Conjugate yarn dyeable with acid dye - Google Patents

Abstract

PURPOSE:The titled yarn having improved heat resistance, and stregth, consisting of a polyamide botained by copolymerizing N,N-bis(amino-n-propoyl)piperazine and a polymer, having a crosssectional shape of rotational symmetry wherein both the components are arranged in such a way that one of them is divided into plural zones by the other and exposed to the surface of the yarn. CONSTITUTION:(A) A component consisting of a polyamide comprising N,N'- bis(amino-n-propyl)piperazine as a copolymer component or a mixture of it and a polyester and (B) a component consisting of a polyester (e.g., polyethylene terephthalate, etc.) is spun by a common extruder type melt spinning machine, to give the desired conjugate yarn having a crosssectional shape of rotational symmetry wherein both the components are arranged in such a way that one of the component A and the component B is divided into plural zones by the other and exposed to the surface of the yarn or protruded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to acid dye dyeable composite m 411, and in detail, 11. Polyamide (A
) or (component CI consisting of a mixture of polyester Iv+IN) and a component [■] consisting of polyester, (1), (
An acid dye-dyeable conjugate fiber having a rotationally symmetrical cross-sectional shape in which one component of II) is divided into a plurality of regions by another component and exposed or protrudes from the IRtm surface area. That is.

Attempts to make polyester iv M'l JI# dyeable with acid dyes have been made for a long time, including a method of copolymerizing polyester with an ester group-forming monomer containing amino groups, and a method of copolymerizing polyester with an amino group-containing compound. A lot of research has focused on methods for blending with polyester.

However, problems with these methods include the lack of heat resistance of the amino group-containing compound to be introduced and the interaction with the polyester, which may cause coloration and decomposition during polymerization or molding, and the polyester This may result in a decrease in the ability to form JIBs.

The present inventors have conducted various studies to solve these problems in dyeing polyester/I/m miscellaneous materials with acid dyes.
Specify a component consisting of a polyamide containing ti'-bis(amino-n-propy/I/) bibefudin (hereinafter abbreviated as BAPP) as a copolymerization component or a mixture of the polyamide and polyester, and a component consisting of polynisdel. The present invention as described at the beginning was achieved by finding that it is extremely effective to combine the materials so as to have the shape of the following.

The present invention will be explained below.

In the present invention, the polyamide (A) containing 13APP as a copolymerization component refers to dicarboxylic acids such as adipic acid, sebacic acid, azefinic acid, terephthalic acid, isophthalic acid, and naphthalic acid, or their NTE/I/or halide,
Ethylenediamine, tetotsumethylenediamine, hexamethylenediamine, P-phenylenediamine, m-phenylenediamine, P-xylylenediamine, piperazine,
Diamines such as bis(4-7minocyclohexyA/)methane.

Tsucutams such as cabrooctum and furyllactam ε
-Aminocaproic acid (means a copolyamide obtained by appropriately combining a monocarboxylic acid such as tl-aminotouric acid and BAPP) 9 Usually obtained by a known polycondensation method.

In this case, it is preferable that the BAPP component occupies 5 to 30% by weight, preferably 5 to 25% by weight, of the polyamide. In addition, in the present invention, polyesters of 01 and component [''] include polyethylene terephthalate, polybutylene prephthalate, polyethylene-2,6
-Naphthalate, poly-1,4-cyclohexylene dimethylene terephthalate, poly-P-ethyleneoxybenzoate, etc., and thermoplastic polyesters having good a-t-tp formation properties are preferably used, but due to their versatility. Polyethylene terephthalate or polyester containing polyethylene terephthalate as the main component is most suitable. Also, 5
-Polyethylene prephthalate containing an alkali metal (storium or potassium) sulfoisophthalic acid component as a copolymerization component has poor miscibility and adhesion with the copolyamide (A), and the use of haze fibers as basic dyes. Polyesters containing polyalkylene oxide as a copolymerization component have a great effect of lowering the dyeing temperature, and polynisder is particularly preferred as TB). In addition, (same and ingredients)
It goes without saying that the polyester used in [ ] may be the same or different.

The composite fiber of the present invention is composed of a component (I) consisting of a copolymerized polyamide (N or a mixture of (N and polyester (Bl)) and a component (I) consisting of a polyester.

(II) One component of (II) is divided into a plurality of regions by the other component and is arranged rotationally symmetrically so as to be exposed or protrude from the JII! fiber surface blood area. By forming such a composite form, the PR fibers of the present invention have improved spinnability.
i! It can be built. And the quantitative relationship of each component forming the composite am is 11! In total, the amount of BAPP component in the fiber is 0.5 to 5M (the amount of tertiary amino group is about 50 to 500
It is preferable that the weight ratio of components (I) and '(II) be 10:90 to 7:3o.

1 to 5 are cross-sectional views schematically showing specific examples of the composite fiber of the present invention. (1), [[] One component (the shaded part) is divided into the number of regions i a
t: “C” exposed or protruding from the surface and arranged rotationally symmetrically.
There is. Composite yarn with such a cross section is spun using a known melt r1, composite spinning device, and drawing device, and the number of 9-split yarns is preferably 2 to 12, preferably 3 to 8, as shown in Figure 3. In the case of such hollow fibers, the degree of hollowness is preferably 70% or less, and in the case of the shape shown in FIG. 4, the degree of protrusion is preferably 60% or less. 9 In the present invention, the affinity between component (I) and [''] (
If the material has poor image quality, there is a possibility that it will peel off during the stretching or false-twisting process, but this can also be actively used to improve the luster of the cod. In addition, the fiber of the present invention may include a matting agent, a heat resistant agent, a 1l11 light agent, an antistatic agent,
It goes without saying that C may also be used as a flame retardant by containing a coloring agent and the like.

The present invention will be explained in more detail below with reference to Examples.

Example 1 10 parts of BAPP, 83 parts of cabrotam, 7.3 parts of adipic acid, and 15 parts of water were charged into an autoclave equipped with a stirrer, and the temperature was set at 250°C.
) Polycondensation was carried out under the conditions of 2 hours, 2 hours of pressure release period, and 2 hours of normal pressure period, and the intrinsic viscosity at 9.25°C in 96% sulfuric acid was 1.
Almost white polyamide chips of No. 2 were obtained.

This polyamide chip was dried after demonomer treatment, and polyethylene terephthalate chips obtained by copolymerizing 2.0 mo/I/96 of 5-sodium sulfoisophthalic acid component were mixed using a normal Ecnuttruder type melt spinning machine.
In the cross-sectional shape shown in Fig. 1, the former was 0.3% under the condition of melting jR degree 285C so that the former accounted for 18% of the 9m fiber in the shaded area.
Spun from the discharge hole of 1111*X36 holes, 1 or 2 yarns
It was wound up at a speed of 0.00 m/min. Then the stretching temperature was 80c.
The yarn was drawn at a draw ratio of 5.1 times to obtain a drawn yarn having a C75d156f, a strength of 4.59/d, and an elongation of 66g6. No fuzz or yarn breakage occurred, and the spinning and drawing properties were good.

After scouring the net fabric obtained by applying a tf6 net to this drawn yarn.

Hylomine Blue AG (acid dye manufactured by ICI) 3% owf, bath ratio 1/100, 98c
After dyeing for 1 hour, the fabric became a bright blue color. In addition, for another silk fabric, 12
Even when dyeing was carried out at 0° C. for 1 hour, a clearly dyed cloth was obtained.

Example 2 Example 1 and 70 parts of polyethylene t/nterephthalate obtained by copolymerizing 5% by weight of a compound obtained by adding 20 times the mole of ethylene oxide to bispheno-1 and A [11].
/n Mjl mixture with 30 parts of polyamide tubing;
General polyethylene terephthalate was spun and drawn under almost the same conditions as in Example 1 so as to have the cross-sectional shape shown in Fig. 2 (equal fft, claw), and the result was 75d/36f, strength 4.5 Q/d @ elongation. A drawn yarn with a degree of strength of 55% was obtained. Hard thread properties were good.

This drawn yarn was tube-knitted and refined, and the same thread 1 as in Example 1 was used to obtain σ
After dyeing with a dyestuff, the cloth became a clear blue color.

[Brief explanation of the drawing]

Figures 1 and 5 are human illustrations of specific examples of the IL/i surface shape of the composite fiber made of wood. Patent applicant: Unitika Co., Ltd. Figure 1, Figure 3 [2] "5th Figure 52" + Mouth

Claims (1)

[Scope of Claims] +1) Polyamide (N or (A)) containing H,N'-bis(amino-11-propyl)bipefudin as a copolymerization component
A component consisting of an ilR compound of and polyester A/(B) (
A composite fiber formed from a component (I) and a polyester component [''], in which one of the components (I) and ([) is divided into a plurality of regions by the other component.
C Several pairs of acid dye-dyeable composites having cross-sectional shapes arranged rotationally symmetrically so as to be exposed or protrude from the surface of the fibers.