JPH0826349B2 - Detergency improver - Google Patents

Description

TECHNICAL FIELD The present invention relates to a detergency-improving agent which is also used at the time of desizing, scouring and soaping of a textile product, washing of a dyeing can body and the like.

[Conventional technology]

Generally, a knitted or woven fabric of a fiber product contains a primary foreign substance in nature and a secondary impurity imparted in a process such as spinning, spinning, weaving or knitting. The main purpose of pretreatment is to remove these impurities by the steps of desizing, scouring and bleaching, facilitating dyeing and finishing. It is said that many failures in dyeing and finishing processes are caused by the preparatory process, and uneven or improper handling in the pretreatment process may cause uneven dyeing and deterioration of fastness, and brittle fibers. It is a well-known fact that it hardens and hardens.

One of these problems is that hardness components or metal ions contained in the treated water used or the fiber material form water-insoluble products in the pretreatment and dyeing processes, making them difficult to remove and redepositing. There is a problem of doing. At the time of dyeing, the unfixed dye becomes insoluble and the dispersibility decreases, which causes problems such as uneven dyeing and a decrease in fastness.

To improve this problem, sodium tripolyphosphate,
In some cases, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, hydroxylethylenediaminetriacetic acid, nitrilotriacetic acid, etc. are used in combination,
The effect is not always sufficient, and the present situation is that the problem has not been fundamentally solved.

[Problems to be Solved by the Invention]

As a problem in pretreatment of fiber material, soaping, washing of dyeing can, etc., impurities or impurities removed by alkali agents or surfactants are caused by hardness component of water used and from fiber material or in mechanical equipment. Due to the metal ions brought in from the water, it forms a water-insoluble salt, redeposits on the fiber product, impairs water absorption and texture, and impairs dyeability. In addition, adherence to and accumulation on machines cause scale formation, which damages textile products. Even in the dyeing or soaping process, when the hardness of the used water is high, the hardness component of water hinders the solubilization and dispersibility of the dye, so that uniform dyeability cannot be obtained and the soaping effect is reduced. In order to improve these problems, it has been attempted to use a polymerized phosphate, particularly sodium tripolyphosphate or an aminocarboxylate-based organic chelating agent, particularly diethylenetriamine pentaacetic acid in combination. Salts and chelating agents were not effective, because they reduced the chelating ability in the high pH range, insolubilized the agent itself against excessive hardness components, lost the efficacy, and caused scale formation due to hydrolysis of the agent itself.

[Means for solving the problem]

The present inventors have conducted diligent research to solve the problem of quality deterioration due to hardness components from water used during pretreatment and dyeing of textile products and metal components eluted from textile materials and machines. The inventors have found that the above problems can be solved by using hydroxyacrylic acid and aminocarboxylic acid in combination, and have completed the present invention.

According to the present invention, therefore, the following detergency improver is provided.

That is, the following components, (A) at least one hydroxyacrylic acid polymer selected from poly-α-hydroxyacrylic acid and its salts and polylactones, and (B) the following formulas (I) and (II), (In the above formula, Y ¹ , Y ² and Y ³ each independently represent a --CH ₂ COH group, or a hydrogen atom, and Z ¹ , Z ² , Z ³ , Z ⁴ and Z ⁵ are each, independently of the other, represent -CH ₂ COOH group or a hydrogen atom, n is an integer of 0-4.
However, Y ¹ , Y ² and Y ³ are not all hydrogen atoms, and Z ¹ , Z ² , Z ³ , Z ⁴ and Z ⁵ are not all hydrogen atoms.) Is an aminocarboxylic acid and at least one selected from salts thereof, and is a detergent improving agent.

Examples of the salt of poly-α-hydroxyacrylic acid include:
It is preferably selected from water-soluble salts such as sodium, potassium, ammonium and alkanolamine salts.

The polylactone of poly-α-hydroxyacrylic acid used in the present invention is an intramolecular and / or intermolecular ester obtained by the reaction between the acid group and the hydroxyl group of this polymer.

The polyhydroxyacrylic acid polymer used in the present invention preferably has a molecular weight of 500 to 1,000,000 (desirably 800 to 500,000). Among these polymers, those having a low molecular weight are obtained by depolymerization of a high molecular weight polymer, and therefore the polyhydroxyacrylic acid polymer defined in the present invention also includes these depolymerized polymers.

Examples of the aminocarboxylic acids represented by the general formulas (I) and (II) include nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, and triethylenetetraaminehexaacetic acid.

Generally, the hydroxyacrylic polymer component (A) and the aminocarboxylic acid compound component (B) are generally 100: 1 to
It is preferable to use the compounding ratio of 1:50.

The hydroxyacrylic acid polymer used in the present invention is
Generally, it is used at a solution concentration of 0.05 g / or more, preferably 0.2 g / or more, and there is no particular upper limit to the amount used. Generally, the amount to be used is appropriately determined in consideration of economy and cleaning effect.

The compound used together with the hydroxyacrylic acid polymer is an aminocarboxylic acid represented by the general formulas (I) to (II) or a salt thereof. As the aminocarboxylic acid salt, sodium and / or potassium salts of aminocarboxylic acid are preferable. The amount used is generally 0.2-5 g /
And preferably in the range of 0.3 to 2 g /.
The cleaning agent of the present invention is used by adding a predetermined amount to a cleaning liquid for textile products. As a washing method, a usual method can be applied, such as a pad / steam method, a pressure boiling method, a boiling method, 40 ° C.
A dipping method from about 100 ° C to 100 ° C or other methods can be applied. An additive such as a surfactant may be added to the cleaning liquid.

The target textile products are polyester,
In addition to synthetic fibers such as triacetate and cellulosic natural fibers such as cotton and hemp, it can also be applied to mixed fibers of synthetic fibers and cellulosic natural fibers, mixed fibers of semi-synthetic fibers and regenerated fibers, etc. Yes, the form of cleaning is also fiber, thread, skein, cheese, woven fabric, knitted fabric, non-woven fabric, raw fabric,
It may be in any form such as an immersion dyeing cloth, a textile printing cloth, a final textile product such as clothes and bedding products.

[Work]

For example, the desizing and refining of cellulosic fibers is performed with an oxidizing desizing agent,
Metal ions such as copper and iron ions that promote abnormal decomposition of the oxidative desizing agent in water even when the hardness of the water used is high by carrying out the coexistence of the cleaning agent of the present invention with alkalis, penetrants and the like. In the case of including the above-mentioned agent, excellent desizing, scouring properties and prevention of adhesion of the water-insoluble salt to the roll in continuous treatment can be obtained as compared with the conventional desizing and scouring method.

On the other hand, by adding the polyester fiber to the weight-reducing bath, the washability of the polyester oligomer, titanium oxide and the like in the hot-water washing bath after the weight reduction is improved and an excellent texture is obtained. Further, by adding it to the scouring bath, the desizing property can be improved, and troubles in dyeing after processing can be prevented.

A machine in which the problem of poor cleanability and the problem of scale adhesion to the machine are solved by coexisting the cleanability improver of the present invention at the time of cleaning a textile product has not been sufficiently clarified, but the present invention It is considered that this is due to the excellent sequestering ability and dispersibility of the detergency-improving agent and their synergistic effect. That is, when there are many hardness components and heavy metal ions to be used, the detergency improver of the present invention chelate the hardness components and metal ions to prevent the formation of water-insoluble substances, and to use a high alkali concentration. Cases and water-insoluble substances brought in from fibers are dispersed to prevent redeposition on fibers and machinery, promote the removal of heavy metals contained in fibers, improve cleaning performance, scale, etc. It is considered that the bleaching in the post-processing and the troubles that occur in the dyeing process are prevented by preventing the generation of bleaching.

〔Example〕

The present invention will be further described below with reference to examples, but the present invention is not limited to these examples.

Example 1 and Comparative Example 1 Example 1 (Experiments 1 to 3) and Comparative Example 1 (Comparative Experiment 1)
~ 13), perform the processing under the following conditions,
The bath condition and filtration test were used to evaluate the ability of the metal ions to insolubilize in water and the dispersibility. The results are shown in Table 1.

 The composition of the treatment bath and the treatment conditions were as follows.

As Ca ^2+: 100 ppm (using CaCl _2: Table 1-a) as Fe ^2: 400 ppm (using FeSO ₄ · 7H ₂ O: Table 1-b) NaOH (flakes): 2 and 50 g / washing improver : Predetermined amount shown in Table 1 Test liquid amount: 200 cc Temperature and treatment time: 98 ° C, 60 minutes After treatment, leave still and filter by suction using filter paper No. 5A.

<Evaluation> The state of the bath after the treatment and the filtration residue are indicated by ◯ to ×.

○: The bath state is transparent, there are no insoluble matter, and there is no filtration residue.

B: Some insoluble matter is observed in the bath, and filtration residue is also observed.

X: Many hard crystalline substances were observed in the bath, and many filtration residues were found.

Example 2 and Comparative Example 2 Example 2 (Experiment 1) and Comparative Example 2 (Comparative Experiments 1 to 1)
In each of 4), cotton broad (40th count) was subjected to steaming desizing and scouring under the following conditions. Table 2 shows the results
Shown in

The composition of the desizing and scouring bath and the desizing and scouring conditions are as follows.

NaOH (flakes): 40 g / Oxidizing glue remover: 10 g / Detergency improver: Predetermined amount shown in Table 2 Sunmol S-77: 3 g / (Nika Kagaku Co., Ltd. anionic, nonionic surfactant) Squeezer Rate: 90% Temperature and treatment time: 95 ° C, 30 minutes <Evaluation> Adhesive qualitative Starch qualitative Iodine solution is used Poval qualitative Iodine boric acid solution is used Degreasing residual fat percentage measurement Methylene chloride is used as an extraction solvent. Use a rapid residual fat extractor.

Rewetting Wick rise method (normal temperature, 1 minute) Soaked in Diacotton Sky Blue 6B 0.5g / Dye water absorption disappearance and spreadability Mikethrene Brill.Green B 0.5g / liquid spotted,
Check the time until disappearance (seconds) and how it spreads.

Example 3 and Comparative Example 3 Example 3 (Experiment 1) and Comparative Example 3 (Comparative Experiments 1 to 1)
In each of 4), a cotton boil (40th count) is steamed and desized and refined under the following conditions to quantify the metal content contained in the fiber. The results are shown in Table 3.

The composition of the desizing and scouring bath and the desizing and scouring conditions are as follows.

NaOH (flakes): 40 g / Oxidizing desizing agent: 10 g / Detergency improver: Predetermined amount shown in Table 3 Sunmol CS: 3 g / (Nika Kagaku Co., Ltd. anionic, nonionic surfactant) Squeezing ratio: 90% temperature and treatment time: 98 ° C, 35 minutes <Evaluation> The test cloth is acid-decomposed with nitric acid-sulfuric acid and the metal content is determined using an atomic absorption spectrophotometer.

Example 4 and Comparative Example 4 Example 4 (Experiment 1) and Comparative Example 4 (Comparative Experiments 1 to 1)
4) In each case, the polyester fiber was subjected to immersion scouring. The results are shown in Table 4.

 The scouring bath composition and scouring conditions are as follows.

NaOH (flakes): 2 g / Sunmor BL-700: 1.5 g / (Nika Kagaku Co., Ltd. anionic, nonionic surfactant) Detergency improver: predetermined amount shown in Table 4 Bath ratio: 1:50 Temperature and time: Scouring 90 ° C, 30 seconds Hot water 60 ° C, 10 seconds Washing at room temperature, 10 seconds <Evaluation> Residual fat rate measurement Using a quick residual fat extractor (extraction solvent / ethyl ether) Glue qualitative Acrylic glue Maxilon Blue 5G 0.2g / solution pH 4.5,50
Soak for 5 minutes at ℃ Example 5 and Comparative Example 5 Example 5 (Experiments 1-2) and Comparative Example 5 (Comparative Test 1)
In each of (5) to (5), gunmetal powder was mixed with a self-crosslinking acrylic resin, line-formed on a cotton cloth, dried, and cured, and treated with a hydrogen peroxide bleaching bath. The results are shown in Table 5.

 The treatment bath composition and treatment conditions are as follows.

35% H ₂ O ₂ : 3cc / NaOH (flakes): 1 g / detergency improver: Predetermined amount shown in Table 5 Bath ratio: 1:30 Temperature and time: 90 ° C, 30 minutes <Evaluation> Visually judge removability.

○: It has been completely removed.

Δ: About half removed.

X: Almost not removed.

[Effects of the Invention] According to the present invention, a synergistic effect of the hydroxyacrylic acid polymer component and the aminocarboxylic acid provides an excellent cleaning effect superior to the conventional cleaning effect. Therefore, even when the hardness of water used is high, when the amount of metal content brought in from the fiber is high, and when it is used together with a high-concentration alkaline agent, excellent cleaning properties, metal removal ability, and dispersibility of impurities brought in from the fiber are obtained. By having the above, it is possible to prevent the redeposition on the fiber and the machine, improve the cleaning property, and prevent the generation of scale. Furthermore, by improving the washability, the original characteristics of the fiber can be exhibited, and by preventing the generation of scale, it is possible to prevent the occurrence of scratches and the deterioration of quality such as feeling, and It is possible to reduce the time and process required to remove the deposit. Thus, by using the cleaning property improver of the present invention, it is possible to obtain an excellent cleaning effect which cannot be obtained by the known cleaning method.

Claims (1)

[Claims] 1. The following components, (A) at least one hydroxyacrylic acid polymer selected from poly-α-hydroxyacrylic acid and its salts and polylactones, and (B) the following formulas (I) and (II): , (In the above formula, Y ¹ , Y ² and Y ³ each independently represent a —CH ₂ COOH group, or a hydrogen atom, and Z ¹ , Z ² , Z ³ , Z ⁴ and Z ⁵ are respectively , Independently of each other, represents a —CH ₂ COOH group or a hydrogen atom, and n represents an integer of 0 to 4.
However, Y ¹ , Y ² and Y ³ are not all hydrogen atoms, and Z ¹ , Z ² , Z ³ , Z ⁴ and Z ⁵ are not all hydrogen atoms.) A cleansing agent containing at least one selected from the group consisting of aminocarboxylic acids and salts thereof.