JPH01156573A - Cloth excellent in feeling - Google Patents

Abstract

PURPOSE: To obtain a fabric excellent in both unique feeling and appearance by carrying out swelling finishing of a fabric composed of conjugate fibers such as a side-by-side type composed of two or more kinds of polyester-based polymers different in swelling properties with a chemical. CONSTITUTION: A fabric composed of side-by-side type or core-sheath type conjugate fibers formed of two or more kinds of polyester-based polymers different in swelling properties with a chemical (a preferred example; o- phenyphenol), e.g. a polymer prepared by copolymerizing polyethylene terephthalate polymer or a polybutylene terephthalate polymer with cyclohexanedimethanol in an amount of 5 to 20 mol% based on constituent residues thereof or a polymer obtained by copolymerizing an adduct prepared by adding average 2-4 molecules of ethylene oxide to both terminals of bisphenol A in an amount of 3 to 20 mol% based on the constituent residues in order to impart a difference in the swelling properties is subjected to swelling finishing with the chemical to form a loose space in the structure. Thereby, a fabric excellent in touch feeling is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fabric made of polyester fibers that exhibits a novel and excellent hand. More specifically, the present invention relates to a fabric with excellent feel obtained by swelling with a chemical solution a fabric containing composite fibers made of two or more types of polyester polymers having different swelling properties with a chemical solution.

(Problems to be Solved by the Invention) Polyester fibers are used in an extremely wide range due to their excellent consumption performance, and the disadvantages peculiar to synthetic fibers, such as color development and waxy feel, are caused by the formation of extremely long microscopic fibers on the surface. The problem has been solved by the technology of forming craters. However, imparting fiber performance, typified by the unique texture produced by swelling and de-swelling with water, as shown by cotton linen, remains an unsolved problem to this day.

Here, the effect of swelling and de-swelling shown in cotton etc. is that, as shown in the conceptual diagram in Figure 1, loose spaces are formed in the woven or knitted structure due to swelling and de-swelling. It is an effect caused by

The present inventors have arrived at the present invention as a result of intensive research in order to provide the above-mentioned performance without impairing the excellent performance of polyester fibers.

(Means for solving the problem) In other words, by swelling with a chemical solution a fabric partially or entirely composed of composite fibers made of two or more types of polyester polymers having different swelling properties with a chemical solution, it is possible to create an excellent wind blower. The purpose is to obtain a fabric that has a

In the present invention, it is essential to use a composite fiber in which two or more types of polyester polymers having different swelling properties with chemical solutions are combined in the same cross section. This is because the drawing process used for synthetic fibers causes compound crystallization of molecules, but during the swelling process, this is released and shrinkage progresses at the same time as swelling, resulting in loss of morphological stability, etc., and this is to prevent this. This is because it is necessary to use polyester polymers with different swelling properties, and to ensure stability in form etc. using the polymer with smaller swelling properties. Therefore, it is important that the polymer with low swelling property occupies at least 1/4 of the cross-sectional area of the single fiber. Of course, for example, development in which component A is more likely to swell in chemical solution A and component b in chemical solution B can occur as a result of the difference in the composition of component # and its interaction with the chemical solution.

The term "swelling processing" as used in the present invention refers to processing in which a polyester polymer is swollen by a swelling agent itself, a solution, or a dispersion liquid, and then de-swelled.

The processing conditions can be appropriately selected depending on the type of polyester and the type of drug, but it is more advantageous to swell at high temperature and under high pressure because it can be swelled with less chemicals. Moreover, it is advantageous because it can be de-swelled by returning it to low temperature and normal pressure. In addition, as a method for deswelling, in the case where the swelling is carried out under high temperature and/or high pressure as described above, in most cases, deswelling is accomplished simply by returning the material to normal temperature and normal pressure. In cases other than such cases, deswelling treatment by removing chemicals is required. This process includes solvent extraction,
Examples include dry heat heating and reduced pressure, and combinations thereof are also effective.

In the present invention, the composite fiber has the following characteristics in accordance with the required performance:
Consists of part or all of the fabric. Of course, it can be combined with natural fibers such as cotton and other synthetic fibers such as nylon.

In the present invention, polyester-based cerimers are used, and among these, polyethylene terephthalate (hereinafter abbreviated as PET)-based polymers and polybutylene terephthalate (hereinafter abbreviated as PBT)-based polymers are particularly preferably used.

As mentioned above, in consideration of swelling properties and shape stability, it is preferable to use PET or PBT as one component of the composite fiber.

Furthermore, the present inventors used PBT to provide a difference in swelling properties.
As a result of extensive research into the modification of polyesters and PBT-based polyesters, we have developed PET and
In the system polymer, cyclohexaline methanol (hereinafter abbreviated as CHDM) is copolymerized with 5 to 20 moles of cyclohexaline methanol (hereinafter abbreviated as CHDM) to its constituent residues, or bisphenol-A is copolymerized with ethylene oxide at both ends of an average of 2 to 20 moles of ethylene oxide. 4
A copolymer of 3 to 20 moles of PBT (hereinafter abbreviated as BPAE) is preferable.
It has been found that a copolymer of 2 to 15 moles of CHDM or BPAE is preferable as a polymer. In addition, isophthalic acid or its derivatives are
PET system and P copolymerized with molti or more and 15 molti or less
BT-based polymers are also preferred. Examples of the isophthalic acid derivatives include sodium salt of 5-sulfoisophthalic acid and dimethyl ester thereof.

If the copolymerization rate of this modified polyester polymer is less than each range, the swelling property will not be significantly improved, and if it is modified beyond the range, the polymer will become amorphous and impair consumption performance. This will be the result.

Although it is not clear whether CHDM and BPAE are particularly preferred for this reason, it is speculated that the segments incorporated into the crystalline portion of PET or PBT become defects in the crystal lattice, thereby producing a swelling effect.

Furthermore, as a result of intensive research on swelling agents, the present inventors found that
It has been found that benzoic acid-based, quincylene-based, methylnaphthalene-based, phenylphenol-based, and chlorobenzene-based drugs are preferable. Phenol and chlorophenol are known as excellent solvents for polyester polymers, but they cannot be used for clothing applications due to toxicity and residual odor. On the other hand, for example, ortho-phenylphenol has low toxicity, can be removed by alkaline treatment, and does not cause swelling beds, while benzoic acid is a type of flavoring agent that is recognized as a food additive and is safe and has excellent swelling properties. This is preferable. There is a danger that the vapor of the same type of quince may ignite and cause an explosion.
Appropriate treatment is required.

The methylnaphthalene-based drugs, phenylphenol-based drugs, and quinolene-based drugs collectively refer to their isomers, and the benzoic acid-based drugs refer to benzoic acid and its lower alkyl: 7-A/(C=1 to
6) Say Esther. It is also a general term for chlorobenzene-based tohamone, C, )IJ-chlorobenzene.

Of course, auxiliary agents such as tetrachloroethane, emulsifiers, and dispersants can be used in combination with the swelling agent.

The swelling processing referred to in the present invention refers to the swelling agent, and processing conditions such as heating should be set appropriately depending on the type of polymer used, the degree of processing required, etc.

Furthermore, as a result of extensive research into composite shapes of fibers, the present inventors found that side-by-side types and core/sheath composite types are preferable. Of course, in the case of a core-sheath composite type, the highly swellable polymer should be placed on the outside. The side-by-side type referred to here refers to those illustrated in Figure 2 (A) to (@), and the core-sheath composite type refers to Figure 2 (F) to
This includes deformation complexes such as those exemplified in (v). In the case of sea-island type composite fibers, it is preferable to use the sea component as a highly swelling component in order to fully exhibit its effect. This is because when used as an island component, the effect of swelling processing is difficult to be expressed.

The swelling process in the present invention is preferably carried out before dyeing the fabric. This is to prevent the dye from being washed away during the processing. It is also recognized that this processing makes the fabric easier to dye.

This will be explained in more detail below with reference to Examples.

[Examples and comparative examples]

The test conditions are described below, and Table 3 shows a list of Examples 1 to 18 and Comparative Examples 1 to 10.

Synthesis of 0 polymer PET-based polymer is made by direct loading method using terephthalic acid and ethylene glycol as main raw materials.Sb20a400p,p
, m, as a catalyst, PBT-based polymer is synthesized using dimethyl terephthalate and 1,4-butanediol as main raw materials, and tetrainglovir titanate 600p, p, m.
were polymerized by the ester conversion method using , as a catalyst, and each was made into chips. Its composition etc. are shown in Table-1 and Table-2.

The polymers shown in Tables 1 and 2 were spun using a composite spinning machine and subsequently drawn to obtain drawn yarns of 75 denier and 36 filaments. These drawn yarns were used as warp yarns, and woven fabrics were prepared using weft yarns as shown in Table 3.

0 Swelling processing and evaluation The obtained gray fabric was subjected to swelling processing, and its appearance, texture, and overall evaluation were performed. As for the evaluation, those that are unchanged from before swelling treatment are Δ, those that are worse are ×1, and those that are better are ○~◎
It was judged as. In addition, in the group evaluation, those with no effect were evaluated as ×, and those with excellent results were evaluated as Q to ◎.

Table-1 PET polymer Abbreviation CHDM%BPAE is as mentioned above. IPA; isophthalic acid SIP; 5-sulfoisophthalic acid dimethyl sodium salt

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram conceptually explaining the change in the texture due to swelling and de-swelling, that is, the waving effect, and Fig. 2 is a schematic diagram showing the cross-sectional shape of the composite fiber used in the present invention. . Special fraud applicant RiRa Shi Co., Ltd.

Claims (1)

[Claims] 1. Texture obtained by swelling with a chemical solution a fabric partially or entirely composed of composite fibers formed from two or more polyester polymers having different swelling properties with a chemical solution. excellent fabric. 2. One type of polyester polymer contains 5 mol% of cyclohexaline methanol based on its constituent residues.
The fabric with excellent hand according to claim 1, which is a polyethylene terephthalate-based polymer copolymerized with 20 mol% or less. 3. One type of polyester polymer has an average of 2 to 4 molecules of ethylene oxide added to both ends of bisphenol-A, and the amount is 3 mol% or more based on the constituent residues.
The fabric with excellent hand according to claim 1, which is a polyethylene terephthalate-based polymer copolymerized with less than mol%. 4. The type of polyester polymer contains isophthalic acid or its derivatives in an amount of 2 mol% or more based on its constituent residues15
The fabric with excellent hand according to claim 1, which is a polyethylene terephthalate-based or polybutylene terephthalate-based polymer copolymerized with less than mol%. 5. One type of polyester polymer is cyclohexaline methanol or bisphenol-A with an average of 2 to 4 molecules of ethylene oxide added to both ends, and copolymerized with 2 mol % or more and 15 mol % or less per constituent residue. A fabric with excellent hand according to claim 1, which is a polybutylene terephthalate-based polymer. 6. The fabric with excellent feel according to any one of claims 1 to 5, wherein the composite fibers have a side-by-side shape. 7. Claim 1, wherein the composite fiber has a core-sheath shape.
6. The fabric with excellent texture according to any one of items 1 to 5. 8. The composite fiber having an excellent texture according to any one of claims 1 to 5, wherein the shape of the composite fiber is a sea-island type, and the component forming the sea part is a polyester polymer that is highly swellable with a chemical solution. fabric.