JPS6119873A - Resist style process - 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 Field of the Invention The present invention relates to a process for resist dyeing textiles using polymethylolmelamine.

Conventional technology Various resist dyeing methods for textiles have been developed over the years, but the so-called tannin tin resist dyeing method is one that does not impair the texture of silk and can withstand the silk scouring process. It has only been put into practical use. However, the tannin-tin resist dyeing method has a limited range of applicability, as it shows resisting properties against direct dyes and acid dyes, but has almost no resisting effect against basic dyes, and it also has a limited range of application. It also had the disadvantage that the fibers would discolor due to their presence.

Purpose of the Invention The present invention is capable of imparting excellent resist dyeing power to fibers that can withstand the silk scouring process without abnormally discoloring the fibers. The purpose of the present invention is to provide a new resist dyeing method that is effective also for reactive dyes and reactive dyes.

Structure of the Invention The method of the present invention involves preparing fibers with a non-soap containing polymethylol melamine and having a pH of 3°6-7°9.30-105°C.
Initial entanglement products are commercially available for anti-wrinkle processing of fibers under trade names such as Azui J Sumitex Resin M-3 (manufactured by Sumitomo Chemical Co., Ltd.) and Beckamin APM (manufactured by Inu Nippon Ink Chemical Co., Ltd.). You can use any of the listed ones.

The treatment bath can be used in the pH range of 3.6 to 7.9, but
It is more preferable that the temperature is 1-16.7 to 7°0, and a trace amount of acid (approximately 0.25 to 2% of the weight of the fibers to be treated) is added to the treatment bath.
should be included. As the acid, either an organic acid or an inorganic acid may be added, but organic acids such as formic acid, acetic acid, oxalic acid, tartaric acid, citric acid, and malic acid are preferred.

The amount of polymethylolmelamine used is not particularly limited, but it is preferably used in a range of 25 to 400% of the fiber weight depending on the purpose. In particular, it is preferable to use about 35 to 100%, since it is possible to obtain economically good resist dyeing properties without changing the texture of the fibers.

In addition, it is best to use a treatment bath at a temperature of about 1:15" to 1:30, and it is recommended to immerse the fibers at 30 to 105°C for 30 minutes to 20 hours. In particular, 90°C or higher, 98 to 100°C
It is preferable to treat in a bath for 1 hour or more.

Note that, after the treatment in the treatment bath, the fibers are preferably subjected to oiling processing.

In the present invention, excellent resisting properties can be imparted to fibers such as silk, wool, cotton, and rayon under such processing conditions, and the resisting properties can be applied to any of reactive dyes, direct dyes, acid dyes, and basic dyes. It is also effective against. Further, the resist dyeing effect obtained by the present invention is not impaired even during the silk scouring process, that is, boiling treatment in an alkaline scouring bath, so it is particularly preferable to apply the method of the present invention to scoured silk threads, that is, kneaded silk threads. . By doing so, the resist-dyed silk thread can be used very effectively for the warp, weft, etc. of crepe.

Note that the method of the present invention may be applied to dyed fibers,
In addition, as in the spinning dyeing method, by tying or pinching fiber bundles in a pattern and immersing them in a treatment bath, a resist dyeing process that partially has non-resist properties, that is, dyeability, can be achieved. You can also.

The fibers processed in this way can be used in at least a part of woven or knitted fabrics, so that they can be piece-dyed.
It can be formed into a fabric with a unique yarn-dyed look.

Example kneaded silk thread was mixed with Sumitomo Chemical Co., Ltd.'s Sumitex Resin M-340-60% and acetic acid 0.3% based on the weight of the silk thread.
The sample was immersed in a pH 6.9 treatment bath containing ~0.8%, treated under atmospheric pressure at 98 to 100°C for 1 hour and 45 minutes, washed with water, and dried.

The product showed excellent resistance to deep color dyeing with direct dyes, acid dyes, reactive dyes, and basic dyes.

In addition, a woven fabric was produced using the resist-dyed silk yarn as part of the warp and weft yarns, and the strongly twisted raw yarn as the remaining weft yarns, which was scoured with alkali to obtain white crepe. When the crepe was dyed red with an acid dye, only a part of the weft yarn (the part where the highly twisted yarn was used) was dyed deep red, and a very interesting yarn-dyed crepe was obtained in which the white silk thread was exposed between the weft yarns. Ta.

Next, Table 1 shows the results of measuring the relationship between the amount of polymethylolmelamine, resisting effect, and scouring resistance. The treatment method used was the same as the above-mentioned method except that the amount of polymethylolmelamine was changed.

Table 1 *1) Weight% of Sumitex Resin M-3 per fiber
shows.

×2) Values are shown after boiling treatment in an alkaline scouring bath for 6 hours.

All of the above methods were carried out by adding acid to the treatment bath, but good results were also obtained when the fibers to be treated were immersed in an acetic acid solution and treated with acid, and then treated with a polymethylolmelamine bath. .

Effects of the Invention In the present invention, polymethylolmelamine, which has not been thought to be able to be used for resist dyeing, is made to fully penetrate and react inside the fibers under specific conditions, resulting in extremely durable and excellent resist dyeing. It can impart a dyeing effect to fibers.

The resist dyeing property obtained by the method of the present invention can withstand the scouring process of silk and is effective for all direct dyes, acid dyes, reactive dyes, and basic dyes, so the method of the present invention has a wide range of applications. It should be noted that application of the method of the present invention does not cause discoloration of the fibers.

Patent applicant: Komaki Senko Co., Ltd. 1 person from outside the company: Shin Minoru Ken

Claims (7)

[Claims] (1) Contains polymethylolmelamine, pH 3.6-7
．． 9. A resist dyeing process characterized by immersing fibers in a treatment bath at 30 to 105°C. (2) The method according to claim 1, wherein the pH of the treatment bath is 6.7 to 7.0. (3) The method according to claim 1 or 2, characterized in that the treatment bath contains polymethylolmelamine in an amount of 25 to 400% of the weight of the fibers. (4) The method according to any one of claims 1 to 3, wherein an acid is added to the treatment bath. (5) The method according to any one of claims 1 to 4, wherein the fiber is silk, wool, cotton, or rayon. (6) The method according to claim 5, wherein the fiber is a kneaded silk thread. (7) The method according to any one of claims 1 to 6, characterized in that the fibers are treated in a treatment bath at 90°C or higher for 1 hour or more.