JPS6312198B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a bath quality improver for polyamide fibers or textile products containing the same. More specifically, the present invention prevents troubles such as damage, scuffing, sagging, and wrinkles of textile products that occur during bath processing such as scouring and dyeing of the textile products, and enables high-quality scouring and dyeing processing. The present invention relates to a quality improver in a bath that makes it possible to improve quality in a bath. [Conventional technology] Conventionally, polyamide fibers such as nylon
When scouring and dyeing are carried out in a high temperature solution of 80 to 100°C, phenomena such as creases, rope creases, scratches, and smudges are observed, which adversely affects quality. Therefore, when processing textiles such as nylon taffeta, it is common to use Zitzker dyeing, which is performed in the form of a spread cloth, and liquid jet dyeing, which has been increasing in recent years, is applied to "wrinkle processing" that gives a wrinkled appearance. The current situation is that
Furthermore, in the processing of textiles, it is generally carried out in the form of a spread cloth, and beam dyeing and the like are common, and jet dyeing is only partially carried out. Nylon dyeing is normally carried out at a temperature of 90 to 100°C, but jet dyeing is carried out at a temperature of 70°C or lower, where wrinkles are less likely to occur. However, such low-temperature dyeing does not increase the build-up of the dye and also causes problems in color fastness. [Problems to be solved by the invention] Under these circumstances, in order to scouring and dyeing polyamide fibers using a jet dyeing machine that has become popular in recent years,
A bath quality improver is used. These include lanolin-based emulsified dispersions, polyethylene glycol, long-chain alkyl fatty acid esters such as lanolin fatty acid esters, water-soluble polyester compounds of polyethylene glycol and polyhydric carboxylic acids, and water-soluble highly water-soluble polyamide compounds such as ethylene oxide-added water-soluble polyamide compounds. There are molecular systems, but the former has weak effects;
There are also problems with stability in processing baths, and disadvantages such as adhesion and staining occur. On the other hand, the latter has drawbacks such as reduced build-up and aggregation with dyes, and neither of these is sufficient. The present inventors have completed the present invention as a result of extensive research into an in-bath quality improver that does not have the above-mentioned drawbacks and is capable of jet dyeing polyamide fibers at 80 to 90°C. [Means for Solving the Problems] That is, the present invention provides a quality improver for polyamide fibers, which is characterized by comprising at least one compound represented by the following general formula. H [-NHC ₃ H ₆ O (-C ₂ H ₄ O)- _o C ₃ H ₆ NHCO-A-
CO] _-l OH (In the above formula, A is _-C6H4- or ( _-CH2 ) _-n , where m is an integer of 2 to ₈ , and n is 10 to 90
, l represents an integer from 1 to 10. ) The compounds of _the formula of the present _invention are diamines _and dicarboxylic acids represented by the general _{formula H2NC3H6O} ( _-C2H4O ) _-oC3H6NH2 (n=10-90), such _as diamines and _dicarboxylic acids, e.g. , terephthalic acid, dimethyl terephthalate, bis-β-hydroxyethyl terephthalate, bis-
It is obtained through a condensation reaction with aromatic carboxylic acids such as β-hydroxyterephthalate and phthalic acid, or fatty acid carboxylic acids such as succinic acid, adipic acid, sebacic acid, and citric acid.The reaction can be carried out using a conventional method. Bye. In carrying out the invention, the compound of the formula is added in an amount of 0.01 to 5%, preferably 0.05 to 5%, based on the polyamide fibers.
This can be done by using 1% owf and adding it to the processing bath. The compound of the formula not only exhibits an excellent anti-wrinkle effect, but also provides good flexibility and smoothness even in the bath, so it reduces the contact friction resistance between fabrics or between fabrics and machines (metals), and improves the quality of fibers. In order to protect the surface, it has the effect of preventing wrinkles as well as scratches and dents. On the other hand, it does not affect dyeing properties and does not cause a decrease in build-up. In addition, it has low foaming properties and good workability, so it can be used with a jet dyeing machine at 80%
This makes it possible to carry out dyeing processing at temperatures of ~90°C. EXAMPLES The invention will now be further explained by way of examples. Synthesis Example 1 71.4 parts of dipropylaminated compound of PEG #600 (0.1
mol) and bis-β-hydroxyethyl terephthalate (hereinafter abbreviated as BHET) 34.0 parts (0.125 mol)
was charged into a vacuum reaction vessel, replaced with N ₂ -gas, and heated to 130
℃, reacted at 205℃±5℃ for 4 hours under reduced pressure (degree of vacuum: 10-20mmHg), and then cooled to complete the reaction (total amine value of the reactants).
HClO ₄ method 8.1) and then 368 parts of warm water were added to completely dissolve the reaction product, and the pH was adjusted to 6.5 with acetic acid to obtain an invention product [1] with an effective concentration of 20%. The viscosity at 20℃ is
It was 56 c.p (B type viscometer). Synthesis Example 2 111.4 parts (0.1 mol) of dipropylaminated PEG #1000 and 34.0 parts (0.125 mol) of BHET were charged and reacted in the same manner as in Synthesis Example 1. The total amine value of the product was 5.3. A 20% aqueous solution was prepared in the same manner as in Example 1. The viscosity is
109c.p, and designated this as an invention [2]. Synthesis Example 3 Dipropylaminated compound of PEG #4000 1029 (0.25
mol) and 85 parts (0.3 mol) of BHET were reacted in the same manner as in Synthesis Example 1. The total amine value of the product was
It was 5.6. A 20% aqueous solution of this product was prepared as in Example 1. The viscosity was 93c.p, and this was designated as Invention Product [3]. Synthesis Example 4 111.4 parts (0.1 mol) of dipropylaminated PEG #1000 and 22.2 parts (0.11 mol) of sebacic acid were charged and reacted in the same manner as in Synthesis Example 1. The total amine value of the product was 4.8. . A 20% aqueous solution of this product was prepared as in Example 1. The viscosity was 46 c.p, and this was designated as the product of the present invention [4]. Synthesis Example 5 111.4 parts (0.1 mol) of dipropylaminated PEG #1000 and 16.1 parts (0.11 mol) of adipic acid were charged and reacted in the same manner as in Synthesis Example 1. The total amine value of the product was 3.7. . A 20% solution of this product was prepared as in Example 1. The viscosity was 112 c.p, and this was designated as the product of the present invention [5]. Invention products [1] to [5] obtained in this way
The effect of this product will be compared with that of a reference product in the following examples. Example 1 Minizette jet dyeing tester (manufactured by Texam Giken)
Nylon taffeta 180cm x 120
cm (vertical x horizontal) 140g to 5500ml water (bath ratio 1:
40: Add a bath ratio of 1:5 to 10 in the main body of the dyeing system, and a bath ratio of 1:40 when adding the dye solution in the liquid flow pump pipe,
Kayanol Mill.Blue GW 0.3% owf was used as the dye, and 2 g of quality improver was added to the bath for evaluation.
The dyeing temperature is increased from 20℃ at a rate of 2℃/min to 80℃×30
30 minutes at 90°C, then rapidly cooled, drained at 70°C, washed twice with water, dehydrated, and dried (75°C).
℃). The amount of foaming during dyeing, the occurrence of wrinkles on the dried fabric, and the build-up were visually observed and evaluated. Furthermore, the texture (flexibility) was also compared based on the tactile sensation.

[Table] Example 2 According to Example 1, nylon/spandex/cotton (reversible knit) was dyed by boiling for 30 minutes. The results are shown below.

[Table] ※※ Comparative product 4: Alkyl phosphate ester system As described above, by adding the product of the present invention to the dyeing bath of polyamide fibers, there is no decrease in dyeability, wrinkle resistance, flexibility, and low Due to its excellent foaming properties, it was possible to obtain high-quality dyed products even by jet dyeing. Evaluation criteria in Examples Low foaming property 〇: Almost no foaming property △: About 1/2 of the space inside the dyeing machine foams ×: Most of the space inside the dyeing machine becomes a foam layer Wrinkle resistance 〇: Almost no foaming property No wrinkles (wrinkles that disappear with heat-setting) △: There are a lot of wrinkles (some wrinkles disappear with heat-setting) ×: Many wrinkles, many wrinkles that do not disappear even with heat-setting Build-up 〇: Blank and No residual dye at the same dye density △: A slight decrease in density, some residual dye ×: A lot of residual dye Texture 〇: Good △: Relatively soft ×: Rough and hard

Claims (1)

[Scope of Claims] 1. An in-bath quality improver for polyamide fibers, characterized by comprising at least one compound represented by the following general formula. H [-NHC ₃ H ₆ O (-C ₂ H ₄ O)- _o C ₃ H ₆ NHCO-A-
CO _{] -l} OH (in the above formula, A is _-C6H4- or ( _-CH2 ) _-n ,
Here, m is an integer of 2 to 8, n is an integer of 10 to 90, and l is an integer of 1 to 10. )