JPH04361669A - Lustering and softening treatment of cellulosic fiber product - Google Patents

Abstract

PURPOSE:To provide a process for imparting a cellulosic fiber product with softness and luster resistant to washing and dry-cleaning. CONSTITUTION:A cellulosic fiber product is treated with a processing agent solution containing (A) a resin reactive with cellulose, (B) a catalyst, (C) an ampholytic surfactant, (D) a blocked aminosilicone resin and (E) at least one kind of resin selected from acrylate resin and methacrylate resin, dried, pressed with a hot roll under a pressure of 50-80kg/cm<2> while keeping the speed ratio of the upper hot roll to the lower roll to 1.0-2.0 to 1 and finally heat-treated at 150-180 deg.C. The woven fabric having further improved luster can be produced by adding (F) an animal-originated polymer having an isoelectric point of 4.7-5.1 (alkali-treated gelatin, enzyme-treated water-soluble gelatin or carboxymethyl- modified chitin) in addition to the above components A to E.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for imparting a flexible luster finish that is resistant to washing and dry cleaning to cellulose fiber products.

0002

BACKGROUND OF THE INVENTION Up to now, a method of imparting gloss to textile products has generally been carried out by passing the textile products between heated pressure rolls. However, in the case of thermoplastic synthetic fiber products, the luster obtained by this method does not disappear when washed or cleaned, but in the case of cellulose fiber products,
There is a problem that it disappears due to poor washing resistance.

Therefore, various methods have been studied to improve the wash resistance of the gloss imparted to textile products. For example, in Japanese Patent Publication No. 1-40149, water-soluble protein and cellulose reactive resin A method of applying a processing agent is disclosed.

However, the method described in Japanese Patent Publication No. 1-40149 has the problem that if the amount of water-soluble protein is selected within a rigidity range that does not cause any practical problems, the wash durability of the gloss deteriorates. On the other hand, if the amount of water-soluble protein is selected within a range that provides good gloss durability, there is a problem that the stiffness of the fabric increases, which imposes practical limitations. Such problems cannot be solved even when gelatin, which is relatively flexible among water-soluble proteins, is used.

[0005] On the other hand, as a known technique, it is possible to soften the rigidity by adding amino silicone resin, but it has been confirmed that this method deteriorates the wash resistance of the gloss. . Therefore, in view of the current situation, there is a demand today for improvement in the feel of textile products that are given a glossy finish and have wash resistance.

[0006]

[Problems to be Solved by the Invention] The present invention solves the above-mentioned problems and provides a glossy cellulosic fiber product that has good washing resistance and can be imparted with a glossy texture that does not pose any practical problems. The objective is to provide a flexible processing method.

[0007]

[Means for Solving the Problems] The method for brightening and softening cellulosic fiber products of the present invention consists of the following: Component A: Cellulose-reactive resin component B: Catalyst component C: Ampholytic surfactant component D: Blocked amino silicone resin Component E: A processing agent liquid containing at least one resin selected from acrylic ester resins and methacrylic ester resins is applied to a cellulose-based fiber product, and after drying, the fiber product is heated by a thermal calender. pressure is 5
Pressure treatment is performed under conditions of 0 to 80 kg/cm2 and the speed ratio of the upper heating roll and lower roll is 1.0 to 2.0:1, and then heat treatment is performed at 150 to 180°C. shall be.

First, each component contained in the processing agent liquid used in the method of the present invention will be explained. The components contained in the processing agent liquid used in the method of the present invention are cellulose-reactive resin (component A), catalyst (component B),
), an amphoteric surfactant (component C), a blocked amino silicone resin (component D), and at least one resin selected from acrylic ester resins and methacrylic ester resins (component E).

The cellulose-reactive resin of component A is as follows:
Glyoxal resins are particularly suitable, and glyoxal resins are preferably used in combination with resins selected from the group consisting of ethylene urea, propylene urea, and triazone melamine resins. Generally, such component A is contained as a solid content in the processing agent liquid at a rate of 0.8 to 4.0%, and a particularly preferable content rate is 1.6 to 3.0%. Further, it is preferable that the melamine resin or the like used in combination with the glyoxal resin is contained in the processing agent liquid in a proportion of 2.0% or less as a solid content.

[0010] As the catalyst for component B, an acidic catalyst prepared by adding an organic acid to magnesium chloride is suitable. In the present invention, by adding such a catalyst, there is an advantage that soaping drying after heat treatment can be omitted. Generally, such component B is contained as a solid content in the processing agent liquid at a rate of 0.25 to 1.25%, and a particularly preferable content rate is 0.3 to 1.0%.

The amphoteric surfactant of component C that can be used in the present invention is an amino acid type amphoteric surfactant or a betaine type amphoteric surfactant. Examples of the amino acid type amphoteric surfactant include the following: Compound

0012

[Chemical formula 1]

[0013] etc. In addition, examples of betaine type amphoteric surfactants include compounds represented by the following general formula:

[0014]

[Case 2]

[0015], lauryl dimethyl betaine, stearyl betaine, lauryl hydroxyethyl betaine and the like.

[0016] Such an amphoteric surfactant has a structure in which a blocked amino silicone resin (component D) having different ionic properties and an acrylic acid ester resin or a methacrylic acid ester resin (component E) form an ionic bond in an aqueous solution. This role is completed by calendering after drying. Therefore, if a surfactant that does not belong to the amphoteric surfactant category is added, the processing agent solution will not be in a uniform liquid state, and it will not be possible to obtain one that can be used for softening processing. Generally, such component C is present in the processing agent liquid as a solid content of 0.
．． It is contained in a proportion of 0.03 to 0.35%, and a particularly preferable content proportion is 0.10 to 0.18%.

Preferably, the blocked amino silicone resin of component D is a compound represented by the following general formula.

[0018]

[Chemical 3]

In general, such component D is contained as a solid content in the processing agent liquid at a ratio of 0.3 to 1.0%, and a particularly preferable content ratio is 0.5 to 0.8%. At this time, if a non-blocking type amino silicone resin is used, the processing agent liquid may gum up when the immersed textile product is passed between pressure rollers to remove excess processing agent liquid. A problem arises.

Component E used in the present invention is at least one resin selected from acrylic ester resins and methacrylic ester resins, including ethyl acrylate, butyl acrylate, isobutyl acrylate, and di-acrylic acid. - Use two or more acrylic esters and methacrylic esters such as ethylhexyl, lauryl acrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, 2-ethylhexyl methacrylate, and lauryl methacrylate. Even if it is composed of at least one of the above-mentioned acrylic esters or methacrylic esters and other copolymerizable monomers, such as methyl methacrylate,
Styrene, acrylonitrile, vinyl chloride, vinylidene chloride, butadiene, glycidyl acrylate, glycidyl methacrylate, tetrahydrofurfleet acrylate, tetrahydrofurfleet methacrylate,
It may also consist of at least one of dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, and the like. Note that the average degree of polymerization of the acrylic ester or methacrylic ester is preferably about 50 to 200. Generally, such component E is contained in the processing agent liquid as a solid content at a rate of 0.8 to 2.4%, and a particularly preferable content rate is 1.0 to 2.0%.

[0021] Next, a process for applying glossy and soft processing to a cellulosic fiber product using a processing agent liquid containing the above-mentioned components will be explained. First, as a method for applying a predetermined amount of a processing agent solution containing the above-mentioned components A to E to a cellulose-based fiber product, a method of immersing the cellulose-based fiber product in the processing agent solution, squeezing it, and drying it is a method. It is most suitable because it can be applied continuously and stably. However, in the present invention, the method of applying the processing agent liquid is not limited to such an application method using immersion, and methods such as application using spraying or foaming may also be used.

[0022] In the present invention, the cellulosic fiber product to which the processing agent liquid has been applied is then dried, but this drying is carried out under conditions in which the cellulose-reactive resin does not react, and generally the drying temperature is 100°C to 100°C. At 130°C, drying time is 40-90 seconds. Particularly preferred drying conditions in the present invention are 110 to 120°C and 50 to 60 seconds. The optimal residual moisture content during drying is 5 to 8%.

[0023] In the present invention, the cellulose-based fiber product after drying is then subjected to pressure treatment using a thermal calendar, and at this time, the luster imparted to the fibers is made to have good washing resistance. In addition, in order to give the textile product a good feel, it is necessary to select the conditions for the pressure treatment. The pressure treatment in the method of the present invention is carried out using a thermal calendar at a temperature of 100 to 150°C at a pressure of 50 to 80 kg/cm2, and the speed ratio of the upper heating roll and lower roll is 1.0 to 1.0. Adjusted to 2.0:1. If this speed ratio is less than 1, a product with good gloss cannot be obtained; on the other hand, if it is more than 2, the slip resistance becomes large and becomes impractical due to mechanical factors. Particularly, in the present invention, the preferable speed ratio of the upper heating roll and the lower roll is 1.
．． The ratio is 3 to 2.0:1.

[0024] As a calendering machine that can be used in the present invention, a calender with friction is suitable, and the lower roll may be made of paper, cotton, or the like.

[0025] In the present invention, after the above pressure treatment,
The cellulosic fiber product is heat treated at a temperature of 150 to 180°C. This heat treatment step is not particularly limited as long as the reaction type resin is completely reacted, and is generally carried out by a roller baking machine, pin tenter, etc.
Optimum conditions may be selected, such as a temperature of 50 to 180° C. for about 1 to 4 minutes.

[0026] The cellulosic fiber products obtained by the above-mentioned processing have a very soft texture and
Since it has excellent washing resistance and dry cleaning resistance, the applied gloss does not disappear even after repeated washing. Fibers constituting cellulose fiber products that can be used in the method of the present invention include natural cellulose fibers such as cotton and hemp, and semi-synthetic cellulose fibers such as rayon and polynosic. If so, the organization is not limited.

The present invention also provides a processing agent liquid having an isoelectric point of 4.7 to 5.1 as a component F in addition to the above-mentioned components A to E.
It is also a gloss softening method for cellulose fiber products that uses a material containing animal-derived polymers, and by adding such component F, cellulose fiber products can be made more glossy. can. The reason why the isoelectric point of the animal-derived polymer used in the present invention is limited to the above range is that if anything outside this range is added, the stability of the processing liquid will deteriorate. In particular, when an animal-derived polymer having an equivalence point of more than 8 is added, the processing agent liquid becomes extremely unstable.

Furthermore, the animal-derived polymer of component F includes alkali-treated gelatin, enzyme-treated water-soluble gelatin,
Preferably, it is selected from the group consisting of carboxymethyl-modified chitin. Generally, such component F is contained as a solid content in the processing agent liquid at a rate of 0.5 to 4.0%, and a particularly preferable content rate is 1.5 to 3.0%.

In the present invention, the sequestered amino silicone resins with different ionic properties and the acrylic acid ester resins and the methacrylic acid ester resins are subjected to calender treatment and heat treatment to become water-insoluble resins, and some of them become water-insoluble resins. Because it reacts with cellulose-reactive resins and animal-derived polymers, it improves its durability against water and makes it difficult for the gloss imparted to cellulose-based fiber products to fade, giving it a flexible luster that withstands home washing. .

In addition, in the method of the present invention, chemicals such as dye fixing agents, antibacterial deodorants, deodorants, etc. may be added as components other than the above-mentioned components A to F contained in the processing agent liquid, if necessary. They can also be added, and when a processing agent liquid containing such various agents is used, it is possible to change the functions of cellulose-based fiber products in various ways. Therefore, by using the method of the present invention, it is possible to produce cellulosic fiber products having various excellent properties.

[0031] Hereinafter, the present invention will be explained in more detail with reference to examples of the method for brightening and softening cellulosic fiber products of the present invention, but the present invention is not limited thereto. In addition, in the following Examples 1 to 6 and Comparative Examples 1 to 7,
The test method and evaluation method for each characteristic are as follows.

a) Home washing method JIS L 012
7-1976 appendix (1) How to wash 103, (3) How to iron 302 (however, hang on the back side of the fabric),
Drying method 2.2 (6) and drying method 602 were followed.

b) Method for measuring isoelectric point The pH value was measured when the number of protons bonded to basicity and the number of protons dissociated from acidic groups became equal.

c) Method for Measuring Glossiness Specular glossiness (Gs) at an incident angle of 60° and a reflection angle of 60° was measured in the vertical direction of the sample using a variable angle glossmeter.

d) Measuring method of rigidity JIS L 10
96-1990 6.19.5 It was carried out according to the E method (handle-o-meter method). In addition, the width of the slit is 10mm
And so. The values shown in Table 3 indicate the average values for each of the vertical and horizontal directions.

e) Comprehensive Evaluation It was comprehensively judged whether the processed cellulose fiber product could be used practically. The evaluation criteria in Table 3 below are as follows. ○: Good △: Slightly poor ×: Poor

[0037]

[Example] Example 1 According to a conventional method, broad cotton with a vertical density of 120 fibers/inch and a horizontal density of 70 fibers/inch was treated by burning, scouring, and
After each process of bleaching and mercerization, a continuous dyeing machine is used to dye the product.
Dyeing using reactive dyeing, squeezing the processing agent liquid having the composition described in Example 1 in Table 1 at a squeezing rate of 61%, and using a heat setter at a temperature of 120°C, the residual moisture content was 7.5. %
Dry until dry. Next, the friction ratio is 1.3
: Using a metal paper roll calender of 1, the metal roll temperature was 150°C and the pressure was 50 kg/cm2.
The fabric was passed through twice at a dough speed of 10 m/min, then heat treated at 160° C. for 3 minutes in a roller baking machine, soaped with an open soaper in a conventional manner, and dried. Table 3 shows the measurement results for the fabric thus obtained.

As shown in Table 3, the fabric obtained in Example 1 had good gloss and feel, and was also good in terms of washing durability.

Examples 2 to 6 In place of the processing agent liquid in Example 1, the processing agent liquids listed in Examples 2 to 6 in Table 1 were used, and the same treatments were carried out.

Comparative Examples 1 to 2 and 4 to 6 In place of the processing agent liquid in Example 1, the processing agent liquids described in Comparative Examples 1 to 2 and 4 to 6 in Table 2 were used, respectively, to produce exactly the same results. processed.

Comparative Example 3 The processing agent liquid described in Comparative Example 3 in Table 2 had very poor stability and could not be used for processing, so further processing was abandoned.

Comparative Example 7 Exactly the same treatment as in Example 1 was carried out using water instead of the processing agent liquid.

The results of the gloss, rigidity and overall evaluation of Examples 1 to 6 and Comparative Examples 1 to 7 are summarized in Table 3 below.

From the results shown in Table 3, the fabrics shown in Examples 1 to 6 obtained by using the method of the present invention all have good gloss and excellent wash resistance. It was soft and had a glossy texture. On the other hand, the fabrics obtained in Comparative Examples 1 to 7 had a hard texture or poor gloss and wash durability.

[0045]

[Table 1]

[0046]

[Table 2]

[0047]

[Table 3]

[0048]

[Effects of the Invention] By using the gloss softening processing method for cellulose fiber products of the present invention, it is possible to obtain a practically useful fully polished fabric that has excellent gloss durability after washing and has a flexible texture. Can be done.

Claims (3)

[Claims] 1. Component A: Cellulose-reactive resin component B: Catalyst component C: Amphoteric surfactant component D: Blocked amino silicone resin component E: At least one selected from acrylic ester resin and methacrylic ester resin. After applying a processing agent liquid containing a resin to a cellulosic fiber product and drying it, the fiber product is heated to a pressure of 5
Pressure treatment is performed under conditions of 0 to 80 kg/cm2 and the speed ratio of the upper heating roll and lower roll is 1.0 to 2.0:1, and then heat treatment is performed at 150 to 180°C. A glossy and soft processing method for cellulose fiber products. 2. The processing agent according to claim 1, wherein the processing agent liquid further contains component F: an animal-derived polymer having an isoelectric point of 4.7 to 5.1. A glossy and soft processing method for cellulosic fiber products. 3. The cellulosic fiber product according to claim 2, wherein the component F is selected from the group consisting of alkali-treated gelatin, enzyme-treated water-soluble gelatin, and carboxymethyl-modified chitin. Glossy soft processing method.