JP3409119B2 - Cellulosic fiber treatment agent and treatment method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treating agent capable of uniformly and rapidly treating cellulosic fibers and a method for treating cellulosic fibers.

[0002]

2. Description of the Related Art β-1,4, which is generally called cellulase, is one of the fiber processing methods for cellulosic fibers.
It has been proposed to effectively use a group of enzymes that hydrolyze glucan to improve the raw material and texture of the fiber and to modify the fiber surface. Compared to traditional chemical processing, animals,
This type of processing using an enzyme of plant or microbial origin is called a fiber modification method, which has little effect on the environment. However, when applying enzymes to cellulosic fibers, not only cotton and hemp but also regenerated cellulose such as rayon and cupra,
Even in the case of acetate, which is a semi-synthetic fiber, it is inevitable to use a surfactant together for the purpose of uniform processing. Also, in the enzymatic processing of knitted fabrics and textiles with a jet dyeing machine or a washer machine, an anionic softener in the bath is used together to prevent folding and rubbing, but this softener in the bath inhibits the enzymatic action and Excessive effect and prolongation of treatment time are caused.

In the processing using an enzyme, it is necessary to newly increase the temperature of the bath to inactivate the enzyme activity in the fiber after the step of applying the enzyme is completed. The fiber waste partially hydrolyzed from the fibers by the enzymatic action is reattached to the fibers during this operation process, and is firmly adhered by the softener in the bath. Therefore, in order to remove the fiber wastes, it was necessary to perform cleaning several times using a cleaning agent containing a nonionic surfactant as a main component.

As described above, even in the fiber processing by the enzyme which is a natural product, when compared with the conventional treatment method mainly composed of chemical agents, it is advantageous from the viewpoint of the environment such as the type and amount of the chemical agent used. The reality is that we cannot find it.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to enzymatically process cellulosic fibers, which have little effect on the environment, do not inhibit enzyme action, and contain an additive and an enzyme that help uniform treatment. It is an object of the present invention to provide a treatment agent and a method for treating a cellulosic fiber, which are preferably achieved.

[0006]

As a result of continuous studies in view of the above problems, the present inventor has found that a specific alkyl glycoside is useful as an additive for assisting the action of the enzyme.

That is, the present invention provides a cellulosic fiber treating agent comprising an alkyl glycoside having a C4-C24 straight chain or a branch and an enzyme having a hydrolytic activity of β-1,4 glucan. Is.

The present invention also provides β-1, 2, in the presence of an alkyl glycoside having a C4-C24 linear or branched chain.
The present invention provides a method for treating a cellulosic fiber, which comprises treating the cellulosic fiber with an enzyme having a 4-glucan hydrolysis activity.

In the present invention, the cellulosic fibers to be treated include cotton fibers, jute, ramie, flax fiber, viscose rayon, cupra, polynosic rayon, regenerated cellulose such as purified cellulose fiber, and triacetate rayon. , Semi-synthetic fibers such as diacetate rayon and the like, and fibers containing these, for example, wool, nylon fibers, acrylic fibers, polyester fibers, and mixed fibers, and mixed fibers, and suitable target fibers are cotton. Fiber, hemp fiber, viscose rayon, cupra, polynosic rayon, purified cellulose fiber can be mentioned.

Examples of the enzyme having a hydrolytic activity of β-1,4 glucan, which is one of the essential components of the cellulose fiber treating agent of the present invention, include Trichoderma cellulase, Rhizopus cellulase, Fusarium cellulase, Tremetes cellulase, Penicillium cellulase,
Acremonium cellulase, Bacillus cellulase, Humicola cellulase, alpergillus cellulase, and the like, and preferred enzymes include Trichoderma cellulase, alpergillus cellulase, Humicola cellulase, Bacillus cellulase. Can be mentioned.

In the present invention, a C4-C24 linear or branched alkyl glycoside is a monosaccharide or oligosaccharide anomeric carbon to which a C4-C24 linear or branched alkyl group is glycoside-bonded. Is. Examples of the alkyl group include n-butyl group, isobutyl group, sec
-Butyl group, t-butyl group, n-pentyl group, isopentyl group, n-hexyl group, isohexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group,
n-undecyl group, n-dodecyl group, n-tridecyl group, n-tetradecyl group, n-pentadecyl group, n-hexadecyl group, n-heptadecyl group, n-octadecyl group, n-nonadecyl group, n-eicosyl group, n-heneicosyl group, n-docosyl group, n-tricosyl group, n-
Tetracosyl group, 2-ethylhexyl group, isodecyl group derived from oxo method or Garbet method synthetic alcohol,
Examples thereof include an isododecyl group, an isotetradecyl group, an isohexadecyl group, an isooctadecyl group and an isoeicosyl group.

Preferred alkyl groups are n-butyl group, isobutyl group, n-hexyl group, isohexyl group,
Examples thereof include n-octyl group, 2-ethylhexyl group, n-decyl group, isodecyl group, n-dodecyl group and isododecyl group.

As the monosaccharide residue of alkyl glycoside,
Glucose, mannose, galactose, arabinose, fructose, ribose, xylose and the like can be mentioned, and oligosaccharides include maltose, isomaltose,
Lactose, cellobiose, mannobiose, maltotriose and the like can be mentioned.

Preferred sugar residues include glucose, galactose, mannose, maltose and lactose.

Preferred alkyl glycosides for use in the present invention include n-hexyl glycoside, n-octyl glycoside, 2-ethylhexyl glycoside and n-decyl glycoside.

In this treatment agent, (1) an alkyl glycoside having a C4-C24 linear or branched chain and (2) β-
The ratio of the enzyme having the hydrolytic activity of 1,4 glucan is 0.1 to 600.
Formulated at a concentration of 0 g / l, and the enzyme of (2) was 0.0
It is blended at a concentration of 1 to 100 g / l. As a preferable blending ratio, the blending amount of the alkyl glycoside is 0.1 to 100 parts by weight with respect to 1 part by weight of the enzyme, and the total concentration of the enzyme and the alkyl glycosideno is 1 to 500 g / l.

Other additives can be added to the cellulosic fiber treating agent of the present invention within a range that does not adversely affect the enzyme activity. Such additives include glycerin, polyethylene glycol, sugars, sodium chloride,
Inorganic salts such as sodium sulfate and ammonium sulfate, lower alcohols such as methanol and ethanol, malic acid,
Examples thereof include organic acids such as citric acid and acetic acid, polyacrylic acid, copolymers of maleic dianhydride and methyl vinyl ether, and copolymers of maleic dianhydride and styrene. These additives are contained in 0.01 to 10 parts by weight of the treating agent. In this treatment agent, the mixing method of the enzyme and the alkyl glycoside is not particularly limited, and the method of adding the alkyl glycoside to the enzyme solution, the method of adding the enzyme to the alkyl glycoside solution, the alkyl glycoside in the buffer solution, and the predetermined amount of the enzyme Can be added and dissolved. In addition, when adding an additive other than these, it is desirable to add a new additive after preparing a solution containing an alkyl glycoside and an enzyme.

The treatment conditions for the cellulosic fiber of the present invention are as follows:
0.001 to 80 parts by weight of an alkyl glycoside and 0.0005 to 20 parts by weight of an enzyme having a hydrolytic activity of β-1,4 glucan are mixed in an appropriate amount of water per 1 kg of a cellulosic fiber, and the mixture is heated at 5 to 55 ° C. 0.2 to 10 under moderate temperature
Process for about an hour.

[0019]

According to the treating agent and the treating method of the present invention,
The alkyl glycoside can enhance the activity of the enzyme having the hydrolysis activity of β-1,4 glucan, can rapidly process the cellulosic fiber, and has an excellent effect of removing the decomposed product.

[0020]

The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

As an enzyme having a hydrolytic activity of β-1,4 glucan, Entilon CM-40L (manufactured by Rakuto Kasei Co., Ltd .; avicelase activity 160 U / g)
(In this example, it is described as "enzyme agent").

Example 1 A mercerized cotton twill fabric cloth (120 cm × 5)
m) using a jet dyeing machine (manufactured by HISAKA CORPORATION)
The enzyme treatment was performed for 60 minutes under the conditions of a reaction speed of 450 m / min, a temperature of 45 ° C., a bath pH of 5.0, an enzyme agent of 2 g / l, and octyl glucoside (AG-8, manufactured by Nippon Seika Co., Ltd.) of 0.2 g / l. The results are shown in Table 1.

Table 1 Octyl glucoside weight loss (%) Number of times of washing Addition system 2.3 2 No addition system 1.8 4 Washing is performed with tap water at room temperature for 5 minutes / time.
Replaced after each wash. What was washed with a treatment agent to which alkyl glucoside was not added was hit on the fiber surface after drying,
Cotton dust is generated. On the other hand, when the treating agent to which the alkyl glucoside was added was used, no cotton dust was generated on the fiber surface although the number of washings was small.

Example 2 Dye-dyed rayon fiber (trade name: Junron, manufactured by Fuji Spinning Co., Ltd.) cloth (10 cm × 120 cm) was subjected to an enzyme treatment with a washer machine (manufactured by Nisshin Kikai Co., Ltd.), and the surface was raised (peach). Processing).

The treatment is carried out using octyl glucoside (AG-
(8, made by Nippon Seika Co., Ltd.) 0.2 g / l, bath pH
The state of the work cloth when it was treated with the enzyme agent of 1.5 g / l for 5.0 minutes and the treatment time of 90 minutes and washed under the same conditions as in Example 1 was observed. The results are shown in Table 2 below.

Table 2 Octyl glucoside Residual weight loss of fluff (%) Folding and wrinkle generation No addition 3.1 Small amount not added 3.2 Large amount of octyl glycoside was not added, undyed fiber waste was found on the fiber surface. Although it remained, fiber residue (fluff) was not observed in the one to which octyl octyl glucoside was added.

Example 3 A dyed knit of purified cellulose fiber (TENCEL: manufactured by Courtles Co., Ltd.) was used for a domestic washing machine (minimini washer NA).
-35, manufactured by Matsushita Electric Industrial Co., Ltd.) using a treatment temperature of 60.
C., bath pH 5.0, treatment time 90 minutes, treatment with octyl glucoside 1.0 g / l, enzyme agent 1.5 g / l to obtain a treated cloth.

(3-1) The treated cloth was dipped in the treatment bath again to examine the reattachment of fiber waste in the bath. The results are shown in Table 3-1.

Table 3-1 Observation of octyl glucoside fiber surface Addition system without re-adhesion system Re- addition of fluff (3-2) The above treated cloth was washed under the same conditions as in Example 1,
The dropping conditions of the fiber waste were investigated. The results are shown in Table 3-2.

[0030] In Table 3-2, ◯ means that no fiber waste was found in the treated cloth, Δ means that it was slightly recognized, and x means that a large amount remained.

Example 4 A cotton broad cloth after desizing was treated with octyl glucoside at 1.0 g / l, a reaction speed of 350 m / min and a temperature of 45 ° C. for 20 minutes using a jet dyeing machine, and then the same jet dyeing. Machine counter speed 450m / min, temperature 45 ° C, bath pH 5.0, enzyme agent 2
6 under the conditions of g / l, octyl glucoside 0.2 g / l
Enzyme treatment was performed for 0 minutes, followed by washing twice. The obtained cloth was pulled along the lateral direction of the cloth at the tearing position shown in FIG. 1, and the strength when the cloth was torn was determined. The results are shown in Figure 2.

[Brief description of drawings]

FIG. 1 shows the tear strength measurement positions of a fabric in Example 4.

FIG. 2 shows the measurement results of the tear strength retention rate at each measurement position in Example 4.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI D06L 1/12 D06L 1/12 (72) Inventor Akito Tsuchiya 4-5-1 Kanzu, Otsu City, Shiga Prefecture Rakuto Kasei Kogyo Co., Ltd. In-house (56) Reference JP 4-240263 (JP, A) JP 5-321142 (JP, A) JP 5-214664 (JP, A) JP 5-117970 (JP, A) ) Japanese Patent Publication No. 52-48236 (JP, B1) Japanese Patent Publication No. 6-508184 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C11D 3/386 C11D 1/66 C11D 7 / 42 C12N 9/42 D06M 16/00 D06L 1/12 JISST file (JOIS) Patent file (PATOLIS)

Claims (2)

(57) [Claims] 1. A cellulosic fiber treating agent comprising an alkyl glycoside having a C4-C24 linear or branched chain and an enzyme having a hydrolytic activity of β-1,4 glucan. 2. A cellulosic fiber characterized by treating a cellulosic fiber with an enzyme having a hydrolytic activity of β-1,4 glucan in the presence of a C4-C24 linear or branched alkyl glycoside. Fiber treatment method.