JPS6375182A - Polyester fiber for fabric - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to polyester I fibers for textiles that do not require sizing. Specifically, the present invention relates to polyester fibers for warp treated with an aqueous resin emulsion. More specifically, it relates to polyester fibers for textiles that do not cause the resin to fall off when used for applications such as adhesive tapes, synthetic leather, canvas base fabrics, and sailcloths, and do not cause peeling from the resin layer applied in post-processing. .

(Prior art) Since the development of the i1 textile process, in the past and even today, most textiles have been produced using a method in which a shuttle is driven by the striking force of a walking stick. Sound and photography have become more intense, and weaving efficiency has reached its structural limit.

In order to overcome these drawbacks, the development of shuttleless a-machines has progressed in recent years, and among these, water jet looms that send the weft yarn on a jet of water and air jet looms that send the weft on a jet of air have become mainstream. It's coming. On the other hand, starch and water-soluble polyvinyl alcohol compounds were initially used as the sizing agent used in the weaving process, but water-soluble acrylic acid compounds and water-soluble polyester compounds have been used as sizing agents that can meet the requirements for coherence and high-speed weaving. has come into widespread use recently.

However, when any of the above-mentioned sizing agents is used, desizing or scouring is usually performed in order to make the dyeing and resin processing performed after weaving uniform and durable. This is true not only for general textiles for clothing, but also for textiles for industrial materials such as adhesive tapes, synthetic leather, base fabrics for canvases, and sail cloth. In the latter case, the purpose is to prevent adhesive tape, synthetic leather, or canvas base fabric from peeling off from the resin layer used in post-processing by removing the glue, and in the case of sail cloth, to improve the durability of the processed resin.

In addition, when water-soluble acrylic acid compounds or polyester compounds are used, it is difficult to remove the glue due to their high affinity with fibers or the slow rate of hydrolysis of the resin in alkaline solutions, so it is difficult to remove the glue by using a highly concentrated alkali solution for a long time. It is necessary to process at high temperatures.

(Object of the Invention) The present invention has been made in order to eliminate such drawbacks. That is, to provide polyester 41il for textiles, which does not remove the sizing agent of the sizing yarn conventionally used for textiles, does not cause separation from the resin layer used in post-processing, and can further improve the durability of resin processing. It is an object.

(Structure of the Invention) That is, the present invention comprises [(1) 5 to 50% by weight of a polyepoxide compound (A) and 50 to 95% by weight of a water-soluble polyester compound (B)
1. A polyester fiber for textile use, characterized in that the polyester fiber has a solid content of 1 to 50% by weight.

(a polyepoxide compound contains at least 2 polyepoxide compounds in one molecule)
The polyester fiber for textiles according to claim (1), which has at least 0.2 g of epoxy groups per 100 g of the compound.

(3) The water-soluble polyester compound includes a dicarboxylic acid as a dicarboxylic acid component, a dicarboxylic acid each having one hydroxyl group and/or a carboxyl group, a diol or its ester derivative as a diol component, phosphoric acid, birophosphoric acid as a mode acid component, Polyphosphoric acid, phosphorous acid.

At least one selected from the group consisting of methanesulfonic acid
Claim (1) or claim 1, which is a compound obtained by mixing and reacting seeds, and then neutralizing with at least one member selected from the group consisting of alkali metal hydroxide, ammonia, and alkanolamine. (2) The polyester fiber for textiles described in item (2).

The polyepoxide compound (A) used in the present invention is a compound containing at least two or more opoxy groups in one molecule, in an amount of 0.2 g equivalent or more per 100 g of the compound,
Resorcinol bis(4-
hydroxyphenyl) dimethylmethane, reaction products of polyhydric phenols such as phenol/formaldehyde resins and the above halogen-containing epoxides, polyepoxide compounds obtained by oxidizing unsaturated compounds with peracetic acid, hydrogen peroxide, etc., i.e. 3 .4-epoxycyclohexene epoxide, 3.4-epoxycyclohexylmethyl-3,
4-Epoxycyclohexenecarboxylate, bis(
Examples include 3,4-epoxy-6-methyl-cyclohexylmethyl) adipate. Among these, reaction products of polyhydric alcohols and epichlorohydrin, ie, polyglycidyl ether compounds of polyhydric alcohols, are particularly preferred because they exhibit excellent performance.

Such polyepoxide compound (A) is usually preferably used as an emulsion. To make an emulsion or solution,
For example, such a polyepoxide compound as it is or dissolved in a small amount of solvent as necessary is emulsified or dissolved using a known emulsifier such as sodium alkylbenzene sulfonate, dioctyl sulfosuccinate sodium salt, nonylphenol ethylene oxide adduct, etc. .

The water-soluble polyester compound (B) is a dicarboxylic acid or a combination of a dicarboxylic acid and an oxyacid, and the diol component contains polyethylene glycol as an essential component, and optionally contains an aliphatic, alicyclic or aromatic diol. Can be used together.

Examples of dicarboxylic acids are oxalic acid, malonic acid, dimethylmalonic acid, succinic acid, geltaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid.

These include fumaric acid, maleic acid, itaconic acid, phthalic acid, terephthalic acid, and isophthalic acid.

However, dicarboxylic acids include acid anhydrides and
Contains esters and acid chlorides. Also,
Oxyacids may be aliphatic or aromatic; examples of such oxyacids are m,p-oxybenzoic acid, glycolic acid, lactic acid, hydroxyacrylic acid, salicylic acid,
These include mandic acid, dropper acid, and β-hydroxyethyl terephthalate. Examples of such optional diols are polypropylene glycol, ethylene glycol, propylene glycol, 1,3-propanediol, 1.
3-butanediol, 1,4-butanediol, 1.5
-bentanediol, 1.6-hexadiol, 4.4
- Contains methylene diphenyl, 2,5-naphthalene diol, ethylene carbonate, etc.

The above dicarboxylic acids and diols are mixed and heated at a temperature of 200 to 200 ml under normal pressure or reduced pressure in the presence of a catalyst such as phosphoric acid, birophosphoric acid, polyphosphoric acid, phosphorous acid, or metasulfonic acid.
It is obtained by reacting at 300°C and neutralizing it. Note that a commonly used esterification catalyst may be used in combination with the above-mentioned phosphoric acid and other catalysts.

The compounding ratio of compound (A) and compound (B) is 5 to 50% by weight for compound (A) and 50 to 95% by weight for compound (B).

If the amount of compound (A) is less than 5% by weight, the stickiness of compound (B) increases, making it impossible to unwind and making weaving difficult. On the other hand, 50
If it exceeds % by weight, the treated warp yarns will not have sufficient cohesive strength, making weaving difficult.

The appropriate amount of the mixed solution of compounds (A) and (B) to adhere to the warp threads is 1 to 50% by weight as a solid component. If the amount of adhesion is less than 1% by weight, it indicates the cohesiveness of the yarn.

Abrasion resistance is reduced and weaving performance is significantly reduced. On the other hand, 50
If the weight exceeds 1%, the treated warp threads will often fall off when they rub against the shuttle during weaving, lowering the weaving efficiency and reducing the peeling ability and durability from the processed resin layer that will be processed later.

The mixed solution of compounds (A) and (B) can be applied to the polyester fibers by a spray method or a roller method.

Any method such as a dipping method may be used. Furthermore, the adhesion treatment may be performed before or after the warp warping.

In either case, the compound (A).

The purpose of the treatment with the mixed solution (B) is to provide the warp threads with binding properties and abrasion resistance necessary for weaving. When the weave density per inch of the warp and weft is low, the attached Wfi is relatively small, and when the weave density per inch is high, so-called high-density fabric, it is necessary to relatively increase the adhesion 1.

(Effects of the Invention) The present invention configured as described in detail above has the following effects.

(1) The size removing treatment or scouring process is omitted, the finished manufacturing cost is reduced, and the drainage equipment required for the size removing liquid treatment becomes unnecessary.

(2) Since there is no natural wax and/or synthetic wax emulsion component that is usually mixed as a glue component, there is no decrease in peel strength at all.

(3) Since the water-based resin emulsion treatment improves hydrophilicity, the processing resin liquid that will be processed later penetrates into the fiber aggregate and has good durability.

(Example) The present invention will be specifically explained below using Examples.

The measurement method used for evaluation is as follows.

(1) Abrasion resistance (grade) (ω Dry method: Yarn and comb were tested under a load of 1 in a TM type conjugation tester (manufactured by Mahayana Kagaku Seiki Seisakusho Co., Ltd.) in a room conditioned to 20°C and 65% RH. The occurrence of fuzz on the yarn was evaluated when the yarn was rubbed 500 times.

(b) Wet method: The thread and comb are rubbed 500 times under a load of 1 while spraying water with a TM type conjugation tester (manufactured by W Mahayana Kagaku Seiki Seisakusho) in a room with humidity adjusted to 20°C and 65% RH. The appearance of fuzz on the yarn during steaming was evaluated.

The evaluation method was to visually judge the state of yarn fluff with the naked eye.

Those in which no fluff was observed were classified as 5th grade, and 9 those in which a large amount of fluff was observed were classified as 1st grade.

(2) Cutting fluff length (am): After applying a load of 1 g per denier, the thread was cut with scissors, and the length of the fluff at the cut end was measured.

(3) Scalability (grade): The treatment system is W-J-L Type.
Yarn speed 20 crx/ with LW-41 (made by Nissan Motor Corporation)
The adhesive properties were evaluated after running for 3000 m at a rotation speed of 400 times/min and a running tension of 0.2 g/denier. The evaluation method was as follows: 1st grade was given to the glue that fell off extremely often, and 5th grade was given to the glue that hardly ever fell off.

(4) Adhesiveness (grade): The treatment system was wound onto a bobbin for 3000 m at a running tension of 0.2 g/denier at 40°C.

The yarns were left to stand for 48 hours under conditions of 80% RH, and the degree of stickiness between the yarns was determined.

Those with a high degree of stickiness are grade 1. Items that were not very memorable were classified as grade 5.

(5) Bias elongation at a load of 20 pounds (1b) or less (
%) Three test samples with a width of 5 cts and a length of 30 countries were taken from the processed fabric in the bias direction (45° direction), and the bias elongation of the sample was determined to be 201b.
The average value was taken as the evaluation value.

(6) Three test samples with a warp of 1!10e1R were taken from the chalk mark treated fabric, folded in the bias direction (45° direction), and passed through a mangle under a pressure of 2 Kg/cti to create creases. The strength of the white line formed at the folded wrinkle part was visually judged with the naked eye. The case where no white lines remained was rated as 5th grade, and the case where extremely white lines remained was rated as 1st grade.

(7) Thread convergence A test sample was prepared by handling the weft from the treated fabric to a length of 30 crtt. This test sample is JIS
- Abrasion strength of L-1095 yarn b) Test described in method ti
The cohesiveness of the yarn was evaluated using a TM type yarn binding force test Iso (manufactured by Mahayana Kagaku Seiki Seisakusho).

(8) Washing conditions Three test samples of warp 40 cm and weft 30 CII were taken from the processed fabrics and washed in a Mitsubishi Electric @J washing machine 'Chikuma'.

Using CW-900A type, bath ratio 1:5 under “strong” condition.
Continuous operation was carried out for 60 minutes and 80 minutes at zero temperature for drying.

Example 1 Using polyethylene terephthalate fibers of 125 denier and 24 filaments as warps, 3.5% by weight of resin was applied using a warper sizing machine using a resin aqueous solution having the following formulation, and the fibers were dried at a temperature of 130°C. The performance of the treatment system obtained by the above method, such as conjugation ability, was as shown in Table 2.

Next, using the treated system as the warp and 250 denier 48 filament polyethylene terephthalate fiber as the weft, the fabric was fabricated in a Nissan LW-41 model water jet loom at a weaving density of 100 fibers/inch in the warp direction and 62 fibers/inch in the weft direction. Woven. The weavability at this time was equivalent to that of Comparative Example 3, and there was no problem with productivity.

The fabric obtained by the above method was padded with an aqueous resin solution having the following formulation.

Next, it was dried at 120°C for 1 minute using a non-touch dryer, and then heat-treated at 200°C for 1 minute.

The obtained treated fabric had the performance shown in Table 3.

Example 2 Using polyethylene terephthalate fibers of 250 denier and 48 filaments as warp threads, 5% by weight of resin was applied using a warper sizing machine using resin water and a solution of the following formulation.1
It was dried at a temperature of 30°C.

The performance of the warp treated by the above method, such as binding ability, was as in the case of the surface treatment.

Next, a fabric was woven in a W-41 type water jet loom at a weaving density of 88 fibers/inch in the warp direction and 50 fibers/inch in the weft direction using the treated system as the warp and 500 denier 96 filament polyethylene terephthalate fibers as the weft. Ta.

The weavability at this time was equivalent to that of Comparative Example 4, and there was no problem with productivity. The fabric obtained according to the above recipe was padded with an aqueous resin solution having the following recipe.

Next, it was dried at 120°C for 2 minutes using a non-touch dryer, and then heat-treated at 200°C for 1 minute.

The obtained treated fabric had the performance shown in Table 3.

Comparative Example 1 Using polyethylene terephthalate fibers of 125 denier and 24 filaments as warps, 4.0% by weight of resin was applied using a warper sizing machine using a resin aqueous solution having the following formulation, and the fibers were dried at a temperature of 130°C. The performance of the obtained treatment system, such as conjugation ability, was as in Omoteko.

Next, a woven fabric was woven using the processing system as the warp in the same manner as in Example 1, but the warp could not be unwound and the stand stopped due to warp breakage 35 times/hour. Satisfactory weaving could not be achieved, and subsequent tests were carried out. Canceled.

Comparative Example 2 Using 250-denier 48-filament polyethylene terephthalate fibers as warp threads, 4.8% by weight of resin was applied using a warper sizing machine using a resin aqueous solution having the following formulation, and the fibers were dried at a temperature of 130°C.

The performance of the warp treated with the above recipe, such as binding ability, was as in the case of the surface treatment.

Next, a fabric was woven in the same manner as in Example 2 using the treated system as the warp, but 'J! J weaving time warp thread I! ! Fuzzing occurred in the rubbed areas and the machine stopped 28 times/hour due to warp yarn breakage, and subsequent tests were discontinued as satisfactory weaving could not be achieved.

Comparative Example 3 Using the same 1lif sizing machine as in Example 1, a resin solution having the following formulation was deposited at a solid content of 3.8% by weight and dried.

The conjugation performance of the resulting treatment system, Plus Size J-95 (manufactured by Gooh Kagaku Kogyo ■), was as per Omoteko. Next, weaving was carried out in the same manner as in Example 1.

Resin processing was performed. The performance of the obtained fabric was that it had almost no durability as shown in Table 3.

Comparative Example 4 Using the same fibers and sizing machine as in Example 2, 250 g of Plus Size J-6 (manufactured by Goo Kagaku Kogyo ■) was applied to the fibers to a resin solid content of 4.5 lif% and dried.

The conjugation performance of the resulting treatment system was as expected.

Next, weaving and resin processing were performed in the same manner as in Example 2. The performance of the obtained fabric was as shown in Table 3, but it had almost no durability.

Comparative example 5 Similar to Comparative Example 3 [1? li, glue, sizing machine.

A fabric was obtained using a loom.

Next, the sizing agent adhering to the warp threads was removed by treatment with a solution having the following formulation at a temperature of 95°C for 10 minutes.

The treated fabric was subjected to the same resin processing treatment as in Example 1.

The performance of the obtained treated fabric was as shown in Table 2.

Table ■

Claims (3)

[Claims] (1) A polyester fiber for textiles, characterized in that it is made of a solid content of 1 to 50% by weight of a polyepoxide compound (A) and 50 to 95% by weight of a water-soluble polyester compound (B). . (2) At least 2 polyepoxide compounds in one molecule
The polyester fiber for textiles according to claim (1), which has at least 0.2 g of epoxy groups per 100 g of the compound. (3) The water-soluble polyester compound includes a dicarboxylic acid as a dicarboxylic acid component, a dicarboxylic acid each having one hydroxyl group and/or a carboxyl group, a diol or its ester derivative as a diol component, phosphoric acid, pyrophosphoric acid as an inorganic acid component, Mixing and reacting at least one selected from the group consisting of polyphosphoric acid, phosphorous acid, and methanesulfonic acid, and then neutralizing with at least one selected from the group consisting of alkali metal hydroxide, ammonia, and alkanolamine. The polyester fiber for textiles according to claim (1) or (2), which is a compound obtained by.