JPS60181365A - Roduction of polyester cloth - 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 relates to a method for producing a polyester fabric having anti-scratch properties.

Currently, there are many raincoats, sports clothes, explosive clothes, etc. that have been imparted with water repellency on the market. In the past, many of these were made from nylon fabric, but recently many have been developed from polyester fabric in view of the two-dimensional stability of drapability and durability of water repellency against washing. However, water-repellent products made from polyester fabrics may have problems such as streak-like or donut-like stains during washing, especially when drying after dry cleaning. This phenomenon is called "kiwazuki" or "wajimi" (hereinafter referred to as "kiwazuki"), and it occurs especially in polyester fabrics such as silk-like fabrics (those with glossy surfaces). It is also more likely to occur in clothing that is stuffed with cotton or the like, such as winter clothing, or in areas that are sewn in layers.

The cause of this "stiffness" is still unknown.

This is not due to the re-deposition of stains during dry cleaning, but rather impurities in dyes, water repellents, or stains that adhered during drying dissolve in the solvent contained in the fabric, and as the solvent moves during drying. It is believed that this is caused by the movement of dyes and impurities.

Currently, the methods used to prevent this "stiffness" include rinsing thoroughly after washing and drying quickly. However, even with this method, it has not been possible to completely prevent "puffing" that occurs in cotton-filled clothing or in overlapping seams.

The present invention was made in view of the current situation.

The object of the present invention is to provide a polyester fabric that does not cause "stiffness" after washing. In order to achieve this object, one aspect of the present invention has the following configuration.

In other words, the present invention is based on ``a fabric made of a cationic dye-dyable polyester fiber copolymerized with sulfoisophthalic acid, after dyeing with a cationic dye.(1) The fabric has 3 carbon atoms.
A polymer mainly consisting of at least one of a polyacrylic ester containing ~20 perfluoroalkyl groups and a polymethacrylic ester containing a perfluoroalkyl group having 3 to 20 carbon atoms, (■) alkyl Contains three types of compounds: etherified hexamethylolmelamine and (1) alkanolamine hydrochloride, and the mixing ratio of the above compound (II) and compound (III) is 1.
This is a method for producing a polyester fabric having anti-scratch properties, which comprises applying a mixture in the range of 0:1 to 2:1 and then heat-treating the mixture.

Two aspects of the present invention will be described in detail below.

In the method of the present invention, first, a fabric made of cationic dye-dyeable polyester (hereinafter referred to as CDP) fibers copolymerized with sulfoisophthalic acid is used, and this is dyed with a cationic dye.

In the CD'P fiber that constitutes the fabric used here,
It is desirable that the amount of sulfoisophthalic acid copolymerized with polyethylene terephthalate is in the range of 0.8 mo1% to 5 mo1%. If the amount is less than 0.8 mo1%, there will be less dyeing seats for the cationic dye, making it impossible to dye the fiber in a deep color with the cationic dye, and if it is more than 5 mo1%, the fiber strength will be greatly reduced.

Conditions for dyeing a fabric made of CDP fibers with a cationic dye vary depending on the amount of sulfoisophthalic acid to be copolymerized, but the dyeing temperature may be 100 to 130°C. The other points are carried out according to the usual dyeing method using cationic dyes.

Cationic dyes are bonded to CDP fibers through ionic bonds, so unlike dyes, which are not bonded to fibers in any way, the dyes do not dissolve into the water or solvent during washing, and therefore are 1. "Scuffing" due to dye migration can be prevented. However, this alone cannot prevent the occurrence of "scorching" caused by factors other than the dye.

The present inventors investigated various fluorine-based compounds and other various resins in a wide range of fields, and found that only the combination of the following three types of compounds was effective in preventing "stiffening" of polyester fabrics caused by factors other than dyes. By combining this fact with a CDP fiber fabric dyed with a cationic dye, they were able to completely prevent "stiffness" in polyester fiber fabrics.

In the present invention, the following three (1), (II), and (III)
Use a mixture of species compounds.

(1) Polymerization based on at least one of polyacrylic acid ester containing a perfluoroalkyl group having 3 to 20 carbon atoms and polynysdel methacrylate containing a perfluoroalkyl group having 3 to 20 carbon atoms. thing.

(II) Alkyl etherified hexamethylol melamine.

(III) Alkanolamine hydrochloride.

The above compound (1) is mainly composed of a fluorine compound having the following general formula (A).

1 1 (CII2-C+-T--・・・・--(A)-
In the 0R2 1 J'C formula (A), R6 is hydrogen or a methyl group, and R2 is a perfluoroalkyl-containing side chain having 3 to 20 carbon atoms. Specific examples of R2 include the following.

3 ■-Ra Cll Rs Rb H ■-R4C1l=Cll Rb ■-R4N SO□-R6 ■-R4Rb (However, R3 is hydrogen or an alkyl group having 1 to 8 carbon atoms,
R4 and Rs are alkylene having 1 to 8 carbon atoms (jJ, R, perfluoroalkyl having 3 to 20 carbon atoms W0). Note that if the Rh group (perfluoroalkyl group) has 3 or less carbon atoms, water repellency will be poor. Furthermore, those having carbon numbers of 20 or more are economically difficult to manufacture.

In the general formula (A), n represents the degree of polymerization.

It is desirable that it be in the range of 10 to 300. If n is less than 10, the "kinetizing" prevention property will be poor, and if n is more than 300, production will be difficult.

Compound (I) of the present invention is mainly composed of the compound of general formula (A), and may be a compound of general formula (A) alone or may contain a copolymer with another polymer.

Next, the compound (If) used in the present invention is alkyl etherified methylolmelamine, and is a compound represented by the following general formula.

(However, 1 to 7 are hydrogen or an alkyl group having 1 to 8 carbon atoms.) In addition, the alkanolamine hydrochloride of compound (III) used in the present invention is a compound having a hydroxyl group and an amino group, and representative examples thereof As an example.

There are the following.

113 R3CCC1+2 0i+ Nil ・HCl Cl1z, C1l Cll CII! OffNll
・lIc1 In the present invention, the above-mentioned three types of compounds ('I) (n
) (1) is mixed and applied to a CDP fiber fabric in the form of a solution or emulsion. The point to be careful at this time is to keep the mixing ratio of compound (■) (alkyl etherified hexamethylol melamine) and compound (■) (alkanolamine hydrochloride) in the range of lO:1 to 2:l. outside this range, the
It is not possible to obtain the property of preventing "stiffness".

CDP a mixed solution or emulsion of three types of compounds
Generally known methods such as dipping, spraying, coating, etc. may be used to apply the coating to the fiber-woven fabric. After applying the mixture, intermediate drying is performed if necessary, and further heat treatment is performed. The heat treatment temperature is preferably 150 to 200°C, and the treatment may be performed for 20 seconds to 3 minutes.

The present invention has the above-mentioned configuration, and 2. The method of the present invention produces a fabric that does not cause any type or type of clothing to "stick" at all during washing and has excellent durable water repellency. be able to.

The present invention will be described in more detail in Examples below, and the performance of the fabrics in the Examples was measured and evaluated in the following manner.

(1) Anti-scratch property 1 piece of cotton gauze between 2 samples of 20cm x 20cn+
After sandwiching 0 sheets and sewing around the sample to make a bag.

Soak for 20 minutes in han tame water or parkrene.

The mixture was left to dry at 20° C. and 65% in a 1-cell room.

After completely drying, the presence or absence of "scratching" was visually determined.

0----1 No "stiffness" is observed.

△---// is slightly observed.

×---// is clearly recognized.

(2) Measured and evaluated by ffl aqueous JIS L-1092 shower method.

Example 1 A 750/36F yarn was prepared using CDP copolymerized with 1.5 mo1% of sulfoisophthalic acid, and a habutae was woven using the yarn. Next, this fabric was scoured, subjected to alkali weight reduction processing (:lii weight ratio: 20%), and further dyed blue with a cationic dye. After drying.

Immerse in the treatment bath of the following formulation 1 and squeeze at a squeezing rate of 50%.
After drying at 0°C for 2 minutes, heat treatment was performed at 170°C for 30 seconds.

Formulation 1 Aqueous emulsion of a polymer prepared by copolymerizing 60 parts of the following compound (al) and 140 parts of the compound (b) (polymer concentration 30%) ----1-----1--, ---- ---
---6 parts methyl etherified hexamethylol melamine ----1 part Nil ・IIcI water ---m=----------1-- ---m=-
---・・-------------91 part-4C
Hz cllfl- COCl1z C112NSO2Cl0F21-- (
a) 1 0 (n and 40) (m = 20) The performance of the obtained fabric was measured and evaluated, and the results are shown in Table 1.

For comparison with the method of the present invention, two samples were collected immediately before the treatment of Formulation 1 in this example, and were designated as Comparative Example 1. Separately, in this example, polyethylene terephthalate fiber was used instead of CDP fiber, and the alkali weight loss rate was adjusted to 20%.

A sample of Comparative Example 2 was obtained by processing in exactly the same manner as in Example 1, except that a disperse dye was used instead of a cationic dye during dyeing to give a blue color.

The performance of the sample of Comparative Example 1.2 was similarly measured and evaluated, and the results are also shown in Table 1.

As is clear from Table 1, it can be seen that the fabric obtained by the method of the present invention has excellent "seam splicing" prevention properties and water repellency.

Patent issuer) head person UniFj1 Co., Ltd.

Claims (1)

[Claims] (1) After dyeing a fabric made of cationic dye-dyable polyester fiber copolymerized with sulfoisophthalic acid with a cationic dye, the fabric is coated with (1) polyacrylic containing a perfluoroalkyl group having 3 to 20 carbon atoms. A polymer mainly consisting of at least one of an acid ester and a polymethacrylic ester containing a perfluoroalkyl group having 3 to 20 carbon atoms, (I+) alkyl etherified hexamethylolmelamine, and (III) alkanolamine including three types of hydrochloride compounds, and the above compounds (11
) and compound (III) in a mixing ratio of 10:1 to 2:1, followed by heat treatment.