JP2006214039A - Oil agent for cellulosic fibers and method for producing cellulosic fiber product using the oil agent and having rich elasticity and flexibility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil agent which enables the production of cellulosic fiber products having rich elasticity and flexibility and is friendly for the environments. <P>SOLUTION: This oil agent for the cellulosic fibers is characterized by containing a mixture solution of a polyoxyethylene ether type surfactant with an alkyl polyamine derivative cation surfactant, and an acetic dimethylol urea in a weight ratio of 0.6 to 50 : 1 in acidic water. The method for producing a cellulosic fiber product holding elasticity and flexibility in good durability comprises subjecting the cellulosic fiber product to an immersion or penetration-dispersing treatment in an acidic aqueous oil agent containing 0.1 to 0.4 wt.% of a mixture solution of a polyoxyalkylene ether surfactant with an alkyl polyamine derivative cation surfactant and 0.008 to 0.018 wt.% of an acetic dimethylol urea, dehydrating the treated cellulosic fiber product, and then drying the dehydrated product at 83°C. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a novel oil agent for treating cellulosic fibers and a method for producing a cellulosic fiber product having high elasticity and flexibility using the same.

Usually, cellulose-based filaments are treated with an oil agent and dried. However, the difference in shrinkage between the outer side and the inner side of the cake is non-uniform, so that there is a disadvantage that a difference in inner and outer fineness occurs. Therefore, the present inventor has developed a method in which corn oil, a polyoxyethylene alkyl ether type surfactant, an alkylene polyamine derivative cationic surfactant, a urea resin, and a resin catalyst are used in combination as an oil agent (Patent Document 1). reference). In this method, the degree of swelling of the filament is reduced, free shrinkage is possible with the progress of drying, and a product having a uniform fineness and a smooth surface can be obtained.
Japanese Patent Publication No. 64-3987

It is an object of the present invention to provide a new environmentally friendly oil agent that can further improve such a conventional method and enables production of a cellulosic fiber product rich in elasticity and flexibility.

In this invention, the said subject was solved by preparing the oil agent which consists of the following composition.
That is, a mixture of a polyoxyethylene ether type surfactant and an alkyl polyamine derivative cationic surfactant and an acetic dimethylolurea in acidic water at a weight ratio of 0.6 to 50: 1. What is contained is an oil for cellulosic fibers.

Oil agents can be used at different concentrations, but the component ratio when treating cellulosic fibers is usually the cationic water activity of polyoxyethylene ether type surfactant and alkyl polyamine derivative in acidic water. It is good to contain 0.1-0.4 weight% of liquid mixture with an agent, and 0.008-0.018 weight% of acetyl dimethylol urea.

The mixing weight ratio of the polyoxyethylene alkyl ether type surfactant and the alkyl polyamine derivative cationic surfactant may be about 1: 1 to 1: 5, and particularly about 1: 1.25. Is good.

Examples of the polyoxyethylene ether type surfactant used in the present invention include Actinol-R-100 manufactured by Matsumoto Yushi Seiyaku, and examples of cationic surfactants for alkylpolyamine derivatives include ZONTES manufactured by Matsumoto Yushi Seiyaku. -TA-460-15 can be exemplified. The weight of the mixed liquid of the polyoxyethylene ether type surfactant and the alkyl polyamine derivative cationic surfactant in the oil used may be 0.1 to 0.4% by weight. It is preferably about 25 to 0.3% by weight. By using these surfactants in combination, the osmotic dispersibility of the acetic dimethylolurea into the cellulosic fibers is enhanced, cross-linking occurs efficiently, and a desired product can be obtained.

Next, the acetic dimethylol urea used in the present invention is an acetic acid ester of dimethylol urea obtained from acetic acid and dimethylol urea.

This acetic dimethylol urea acts quickly on the OH group of the fiber molecule C ₆ H ₉ O ₄ —OH, causing a lot of cross-linking in the fiber and increasing the elasticity.

The amount of acetic dimethylol urea used may be about 0.008 to 0.018% by weight in the oil during use, but usually 0.006 to 0.012% by weight.

By treating a cellulosic fiber product using such an oil agent of the present invention, elasticity and flexibility can be imparted to the cellulosic fiber product. Immersion or penetration into an acidic aqueous oil containing 0.1 to 0.4% by weight of a mixed solution of a polyamine derivative with a cationic surfactant and 0.008 to 0.018% by weight of acetic dimethylolurea, followed by dehydration Then, drying is performed at 83 ° C. or higher (preferably around 85 ° C.).

For the drying process after dehydration, cellulosic filaments can be used with ordinary tunnel dryers, but for viscose table fiber, the oil-treated and dehydrated products are placed in a breathable bag and the whole bag is used. Then, spread it on a breathable plate with a thickness of about 2 to 8 cm, and put it in a drying chamber where the direction of hot air changes up and down, for example, 50 ° C. in the first drying chamber, 70 ° C. in the second drying chamber, In the third and fourth drying chambers, it is preferable that the temperature is sequentially changed to 85 ° C. to sufficiently dry.
In this drying step, the cross-linking to the fiber is ensured, the elasticity is increased, and the fiber can be imparted with flexibility.

Since the oil agent of the present invention is used as acetic dimethylol urea without using dimethylol urea as it is, it is environmentally friendly, and it is very efficient and stable without using a special catalyst. Crosslinks can be created in the fibers. Cellulosic fibers treated with the oil agent of the present invention are unprecedented and are excellent in elasticity and dyeability.

Hereafter, the example which uses this invention oil for a viscose staple fiber, and the example which uses the oil of this invention for a cellulose filament are demonstrated.
A. When using the oil of the present invention for viscose staple fiber:
In this example, a viscose staple fiber that is environmentally friendly and harmless to the human body is treated with the oil of the present invention to obtain a product that permanently retains elasticity and flexibility.
The method is as follows.
a. A viscose staple fiber cut to a required length is dipped with the oil of the present invention.
b. The fiber treated with a is dehydrated and sent to the tunnel dryer.
c. Dry with a tunnel dryer.

[Step a]
A certain amount of viscose staple fiber is put into a bag with a zip which is made of a polyester fabric, and the bag is placed in the oil agent of the present invention (polyoxyethylene ether type surfactant in acidic water of pH 6.5 to 6.8). And a cationic surfactant of alkylpolyamine derivative containing 0.25 to 0.3% by weight of a mixture of 1: 1.25 and 0.012% by weight of acetic dimethylolurea) at a temperature of about 45 ° C. So that the acetylene dimethylolurea penetrates into the fiber so that the cellulose molecules are sufficiently cross-linked by the acetodimethylolurea.

[Step b]
The filament in the bag treated with the oil agent in the immersion bath of a is put in a centrifugal dehydrator as it is and dehydrated as much as necessary. After that, open the zipper of the bag, take out the viscose staple fiber, stir well, then open the zipper of the bag made of polyester fabric separately dried, put a stainless frame (height about 6cm) in it, The dehydrated viscose staple fiber is spread evenly in the stainless steel frame inside, the zipper is closed, and the bag is placed on the cart shelf.
This cart has three upper and lower air-permeable shelves and can carry 24 bags in total. The size of the bag was about 88 cm in length, about 88 cm in width, and about 6 cm in height.

[Step c]
The cart is sent to a tunnel dryer consisting of five drying chambers A, B, C, D and E.
A rail is provided in the center of the dryer, and the cart is sequentially sent from the drying chambers A to E on the rail.
The drying chamber A is 55 ° C., the drying chamber B is 70 ° C., the drying chambers C and D are 85 ° C., the drying chamber E is a cooling chamber, and the temperature is lowered by adjusting the inflow of fresh air at the drying chamber. The cart is taken out from E.
The viscose staple fiber on the cart moves in the dryer together with the cart, is dried for 40 minutes × 5 = 200 minutes in 5 drying chambers, and is then taken out from the drying chamber E. A new cart is introduced into the drying chamber A, and the drying process is resumed.
By this drying step, the oil agent of the present invention can be applied uniformly to the viscose staple fiber to ensure the cross-linking in the viscose staple fiber, and the viscose staple fiber is permanently elastic and flexible. It can be given to.

Each drying chamber is dried by a hot air fan using an electric heater. In the drying chamber A, hot air is sent downward from the upper left side, and hot air is sent from the lower side to the upper side on the right side. In the drying chamber B, hot air is sent downward from the upper right side, hot air is sent from the lower side to the upper side on the left side, and exhausted by the exhaust fan through the upper left duct. In the drying chamber C, hot air is sent downward from the upper left side, hot air is sent from the lower side to the upper side on the right side, exhausted by the exhaust fan through the duct on the upper right side, and the drying chamber D is further opened from the upper right side. Hot air is sent downward, hot air is sent from the lower side to the upper side on the left side, and exhausted while being adjusted by opening and closing the upper door window, and then the drying room E cools the cart. YouThe hot air fan is stopped, the doors of the drying chambers A and E are opened, and the cart cooled to about 60 ° C. or less is taken out. At the same time, a new cart is again put into the drying chamber A. It is sufficient to move to 1 and repeat drying.

In this way, the viscose staple fiber treated with the oil of the present invention has very excellent elasticity, whether it is a single spun yarn or a blended yarn. In addition, weaving and knitting efficiency is good, dyeability is very excellent, and a clear dyed product can be obtained.

Furthermore, since the product of the present invention is excellent in elasticity, it has a sense of volume as compared with the conventional product.

B. When the oil agent of the present invention is used for the cellulosic filament, the viscose rayon filament is spun and then treated with the oil agent of the present invention (the same as A).
The activity of the oil agent of the present invention is due to the strong osmotic action of a polyoxyethylene ether type surfactant (in this example, Actinol-R-100 manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), and the oil agent is uniformly distributed in the non-crystalline portion of the fiber. Osmotically dispersed, especially acetyl dimethylol urea begins to crosslink and naturally produces a large number of crosslinks in the non-crystalline portion of the fiber.

After dehydration, a cationic tunneling agent of an alkylpolyamine derivative that crosslinks with an increase in temperature in a normal tunnel dryer and invades into the amorphous part due to a reduction in volume (in this example, ZONTES- TA-460-15) soft smoothing agent adheres to the surface of the fiber, and due to its smoothness, the filament can be easily separated, the water evaporation path is opened, and the densely wound filament is easily separated. Even if the molecular alignment due to the smoothness of the surface and the cross-linking of acetyldimethylolurea causes a slight tension, the molecular alignment is directed in the same direction, causing an elastic molecular alignment (in the same direction), and the stretched state. The fineness inside and outside of the filament wound tightly is made uniform, which improves the weaving and knitting efficiency, makes it possible to produce clear and flexible products, and makes new products possible.

Claims (5)

A mixture of a polyoxyethylene ether type surfactant and an alkyl polyamine derivative cationic surfactant and an acetic dimethylolurea are contained in acidic water in a weight ratio of 0.6 to 50: 1. An oil for cellulosic fibers characterized by the above. 0.1 to 0.4% by weight of a mixture of the polyoxyethylene ether type surfactant and an alkyl polyamine derivative cationic surfactant and 0.008 to 0.018% by weight of acetyldimethylolurea It contains, The oil agent of Claim 1 characterized by the above-mentioned. The oil agent according to claim 1 or 2, wherein a mixing weight ratio of the polyoxyethylene alkyl ether type surfactant and the alkyl polyamine derivative cationic surfactant is 1: 1 to 1: 5. The oil agent according to any one of claims 1 to 3, wherein the acetyl dimethylol urea is a compound of dimethylol urea and acetic acid as a low condensate. Cellulosic fiber products were prepared by mixing 0.1 to 0.4% by weight of a mixed solution of a polyoxyalkyl ether surfactant and an alkyl polyamine derivative cationic surfactant and 0.008 to 0.018% by weight of acetic dimethylol urea. A method for producing a cellulosic fiber product that retains elasticity and flexibility in a durable manner, characterized in that it is immersed in an acidic aqueous oil containing 100%, dehydrated and dried at 80 ° C. or higher.