JPH05331766A - Smoothing agent for car sheet textile product - Google Patents

Abstract

PURPOSE:To provide the subject smoothing agent capable of smoothing the processing of car sheet textile products, also causing little fogging, consisting of an aqueous dispersion containing a specific wax base and an aqueous solution of cationized starch. CONSTITUTION:The objective smoothing agent consisting of an aqueous dispersion containing (A) (1) a wax base selected from hydrocarbon waxes, hydrocarbon wax oxides and animal and plant waxes and (2) cationized starch, or (B) a mixture of said wax base and a composite made up of cationized starch and an anionic polymer. This agent is used for application on a textile product for car sheets, having such characteristics as to cause little fogging after a car sheet imparted therewith is installed in an automobile. The above anionic polymer is e.g. a polymer of (meth)acrylic acid or maleic acid, a naphthalenesulfonic acid-formalin condensate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a smoothing agent for car seat fibers. More specifically, the present invention relates to a smoothing agent for car seat fibers, which imparts smoothness to the fiber product in order to smoothly carry out the car seat fiber product processing step and has a very small fogging phenomenon after being mounted on an automobile as car seat fibers.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Compositions composed of various waxes, oils and surfactants have been used as smoothing agents for the purpose of imparting excellent smoothness to fibers for smooth weaving and knitting. Of these waxes, oils, and surfactants, those with a low molecular weight, or volatile components such as low-molecular weight components that are difficult to remove when synthesizing or refining these, are installed in automobiles as car seat fibers. The so-called fogging phenomenon that adheres to the inner wall of the windshield or the like to cause fogging in the closed room has always been present. Specifically, it is said that the fogging phenomenon is mainly classified into three types, namely, the above-mentioned smoothing agent component, the plasticizer of various resins used for automobile interiors, and the light resistance improving agent. .. However, for example, from the viewpoint of using plasticizers for various resins, Japanese Patent Application Laid-Open No.
-68352, and JP-A-1-287147, attempts have been made to improve the fogging phenomenon.However, although smoothing agents and light resistance improving agents have been improved, they are still at a sufficient level. It's hard to say. Therefore, an object of the present invention is to provide, from the standpoint of a smoothing agent, a smoothing agent for car seat fibers which has extremely little fogging after being attached to an automobile as a car seat.

[0003]

Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventors have found that a cationic starch or a complex of the same with an anionic polymer is contained as a dispersant for a wax base. The present invention has been completed based on the finding that a smoothing agent for a car seat fiber, which is made of a water dispersion made of water, has very little fogging phenomenon and has extremely high dyeing fastness.

That is, the present invention provides water containing at least one wax base (A) selected from the group consisting of hydrocarbon wax, hydrocarbon wax oxide and animal and vegetable wax and cationized starch (B). The purpose of the present invention is to provide a smoothing agent for car seat fibers, which comprises a dispersion liquid.

The present invention also comprises at least one wax base (A) selected from the group consisting of hydrocarbon wax, hydrocarbon wax oxide and animal and vegetable wax, cationized starch and anionic polymer. The present invention provides a smoothing agent for car seat fibers, which is composed of an aqueous dispersion containing the composite (C).

In order to obtain a smoothing agent for car seat fibers, which comprises an aqueous dispersion containing the wax base (A) and the cationized starch (B) of the present invention, the cationized starch (B) is used in a suitable aqueous solution. It is advisable to mix it with the wax base (A).

The wax base (A) used in the present invention includes the following. (Hydrocarbon Wax) Examples of the hydrocarbon wax include petroleum wax, polyolefin wax and mineral wax. As petroleum waxes, paraffin wax (usually having 20 to 50 carbon atoms and melting point of 40 to 70 ° C), microcrystalline wax (having 30 carbon atoms)
~ 70) can be used. As the polyolefin wax, low molecular weight polyethylene, low molecular weight polypropylene, and a copolymer of ethylene and an α-olefin having 3 to 8 carbon atoms (for example, ethylene 50% or more, particularly 70% or more)
Can be used. The average molecular weight of the polyolefin wax is usually 500 to 20000, preferably 500 to 2000. Examples of mineral waxes include montan wax and ozokerite. Of the hydrocarbon waxes, paraffin wax is preferred. Among them, those having a melting point of 60 ° C. or higher are preferable.

(Hydrocarbon Wax Oxide) Examples of the hydrocarbon wax oxide include oxides obtained by oxidizing the petroleum wax and the polyolefin wax with oxygen or air. The acid value of the oxide is usually 3 to 100.
The melting point is usually 40 to 70 for petroleum wax oxidation products.
C., preferably 60 to 70.degree. C., usually 50 to 90.degree. C., preferably 60 to 90.degree. C. in the case of the oxidation product of polyolefin wax.

(Animal and plant wax) Examples of the animal and plant wax include carnauba wax, candelilla wax, beeswax, rice bran wax, spermaceti wax and wool fat. Animal and vegetable wax-like oils and fats can also be used, and examples thereof include wood wax, hydrogenated castor oil wax, hardened beef tallow, and sugar oil hardened wax. Animal and plant waxes also include animal and plant wax-like fats and oils. Among these, preferred are carnauba wax, whale wax, beeswax, and candelia wax.

Examples of the cationized starch used in the present invention include raw starches such as corn, potatoes, tapioca, wheat and rice, and primary, secondary and tertiary amino groups and quaternary ammonium. A starch containing at least one basic nitrogen selected from the group consisting of groups can be used. Among these known cationized starches, those having a colloid equivalent of 0.05 to 1.0 meq / g are preferable.

Further, in the present invention, the leveling agent ζ used is
It is preferable that the −potential is within the range of −15 to +30 mV.
If the ζ-potential exceeds +30 mV, uneven adhesion may occur during processing. On the other hand, if the ζ-potential is less than −15 mV, it means that the dispersant layer has too many anionic components, and it becomes difficult for adsorption to occur and at the same time, the stability of the smoothing agent particles is apt to be significantly impaired. When a cationized starch having a colloid equivalent of less than 0.05 meq / g is used as a complex with an anionic polymer, the ζ-potential becomes less than −15 mV, which makes adsorption difficult. On the other hand, a cationized starch having a colloid equivalent of more than 1.0 meq / g has a strong cationic property, so that the ζ-potential of the smoothing agent may exceed +30 mV and uneven adhesion may occur. Further, the cationized starch aqueous solution (B) used in the present invention is
It is preferable to have a Brookfield viscosity of 2-100 centipoise at 30 ° C. in a 3% by weight aqueous solution.

The above cationized starch has a low molecular weight or a hydroxy group unless it inhibits the formation of a complex with an anionic polymer or the viscosity of an aqueous solution containing the complex is out of the range specified in the present invention. A functional group such as an alkyl group may be introduced. Moreover, one kind may be used alone, or two or more kinds may be used as a mixture.

The anionic polymer according to the present invention may be any one as long as it forms a cation-anion complex by mixing with the above-mentioned cationized starch. Preferred examples include (meth) acrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, monomers having a carboxyl group such as crotonic acid, and salts thereof, vinylsulfonic acid, styrenesulfonic acid, 2-acrylamido- Monomers having sulfonic acid groups such as 2-methylpropanesulfonic acid and salts thereof, polymers of monomers such as phosphoric acid esters of hydroxyalkyl (meth) acrylate and salts thereof, and these monomers and others A copolymer with an ester unsaturated monomer, naphthalene sulfonic acid, methyl naphthalene sulfonic acid, butyl naphthalene sulfonic acid, cresol sulfonic acid, Scheffer acid, etc., and a formalin condensate of a mixture thereof and a salt thereof, etc. .. The anionic polymer may be used alone, as long as it does not inhibit the formation of a complex with cationized starch,
You may use it as a mixture of 2 or more types.

The water-soluble composite material preferably used for constituting the smoothing agent according to the present invention has, for example, a colloid equivalent.
It is obtained by mixing 0.5 to 100 parts by weight of an anionic polymer with 100 parts by weight of cationized starch of 0.05 to 1.0 meq / g to form a complex. The formation of this complex can be confirmed by comparing the sum of the colloid equivalents of the cationized starch and the anionic polymer and the colloid equivalent of the water-soluble complex.

The viscosity of the water-soluble composite is such that the Brookfield viscosity of a 3% by weight aqueous solution thereof at 30 ° C. is 2 to.
It is preferably 100 centipoise. A water-soluble composite having a Brookfield viscosity of less than 2 centipoise in a 3 wt% aqueous solution at 30 ° C. has an emulsifying power but tends to have poor dispersion stability. On the other hand, water-soluble composites exceeding 100 centipoise tend to significantly reduce the emulsifying property of the wax.

The colloid equivalent as used in the present invention is a physicochemical value obtained by measuring the ionizing groups of the polymer electrolyte by the colloid titration method. The colloid equivalent weight was measured for cationized starch with respect to an aqueous solution of its prescribed concentration, while for anionic polymers it was added with an excess amount of 1/200 N-methylglycol chitosan solution to the aqueous solution of its prescribed concentration. On the other hand, a method of adjusting the initial pH to 4 with a 2N-acetic acid solution, adding a toluidine blue solution as an indicator, and titrating with a 1/400 N-polyvinylsulfate potassium solution was used.

The ζ-potential is a physicochemical value obtained by a conventional electrophoresis method. The measurement of ζ-potential is
pH is 8 and ionic strength I is 5.32 × 10 ^-3 (CaCl ₂ , MgCl ₂
And Ca concentration of 56.9ppm and Mg concentration of 8.6ppm
Of the electrolyte solution) and the concentration of the smoothing agent is 50 ppm.
Then, the method of electrophoresing the smoothing agent particles under an applied voltage of 80 V was used.

In order to control the ζ-potential of the leveling agent within the range of -15 to +30 mV, the mixing ratio is controlled by controlling the cationicity of the cationized starch used and the anionicity of the anionic polymer. good.

As one preferred method for obtaining the leveling agent according to the present invention, first, 0.1 to 0.1% of the above cationized starch is added.
20% by weight, preferably 0.5 to 10% by weight, is poured into water and dissolved by heating. Next, add 0.0% of anionic polymer to this aqueous solution.
It is mixed in an amount of 02 to 10% by weight, preferably 0.01 to 5% by weight to form a cation-anion complex. Then, the temperature is raised with sufficient stirring. 2 to 35% by weight, preferably 10%, of wax in an aqueous solution of the cation-anion complex heated.
Add about 20% by weight and mix and disperse the wax in a molten state. At this time, the wax may be added as a solid to the above aqueous solution, or may be previously melted and added. It is desirable that the temperature at the time of dispersion is not lower than the melting point of the wax and not higher than 100 ° C. Further, it does not matter at all to add another dispersant or emulsifier as long as the effect of the present invention is not impaired.

The particle size of the wax dispersed in the leveling agent dispersion according to the present invention is generally desired to be 5 microns or less. For example, the leveling agent composition according to the present invention is used in a state of being dispersed in water, and it is desirable that the leveling agent particles dispersed in water have a particle size of 5 microns or less, preferably 1 micron or less. If the particle size is larger than 5 microns, the stability of the dispersion may be impaired, or uniform adsorption may not be achieved. A homomixer, an ultrasonic emulsifier, a high-pressure discharge homogenizer, or the like can be used to disperse the leveling agent particles.

The method of applying the smoothing agent for car seat fiber of the present invention to a textile product is the same as that of the conventional smoothing agent. For example, a treatment bath is prepared by previously adding a necessary amount of the smoothing agent dispersion of the present invention. Then, the fiber product may be dipped in it, squeezed and dried. There is no particular limitation on the concentration of the treatment bath. Generally, 0.3 to 3.0 g / liter in terms of solid content is used. Most of the fiber products to be treated are cheese, skein, or beam, and the amount to be attached to them is usually 0.3 to 3.0 g in terms of solid content per 100 g of dry fiber product.

As the car seat fibers, natural fibers such as cotton, wool and silk, semi-synthetic fibers such as soot and rayon, synthetic fibers such as nylon, acrylic and polyester, and various fibers mixed with them can be used. Of these, fibers containing polyester are preferable.

[0023]

EFFECTS OF THE INVENTION The smoothing agent for car seat fibers of the present invention has smoothness equal to or higher than that of conventional smoothing agents, facilitates the processing process of car seat fiber products, and has a fogging phenomenon as compared with conventional smoothing agents. Is extremely small and contains almost no surfactant, and therefore the dyeing fastness is extremely excellent.

[0024]

The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.
The parts and% in the examples are based on weight.

(Production of Smoothing Agent) Cationized starch (a glycidyltrimethylammonium chloride reaction product of tapioca starch, colloid equivalent 0.45 meq / g) is dissolved by heating in water. An anionic polymer (sodium salt of naphthalene sulfonic acid formalin condensate) is mixed to form a cation-anion complex. At that time, both were used so as to have the weight ratio shown in Table 1. Then, add 155 ° F paraffin wax as a wax in an amount shown in Table 1 with sufficient stirring, melt at 75 to 90 ° C, and emulsify at a pressure (gauge pressure) of 200 kg / cm ² using a high-pressure discharge homogenizer. Then, it was cooled to obtain a leveling agent. The composition of the obtained smoothing agent is shown in Table 1.

[0026]

[Table 1]

In the table, the viscosity indicates the Brookfield viscosity at 30 ° C. of a 3% by weight aqueous solution of the cationized starch / anionic polymer composite.

Cps is centipoise.

(Examples of smoothness, antistatic property and adhesion amount) 10 kg of a smoothing agent treatment liquid was prepared so that the solid content concentration of the invention product 1 shown in Table 1 was as shown in Table 2, and PET 30 count yarn cheese was prepared. (About 0.6
3kg) using a lab cheese dyeing machine, the liquid flow is in → o
It was treated with ut alone at 45 ° C for 10 minutes. Then 110 ° C
Dry with, smoothness of the yarn in the inner layer, middle layer, and outer layer of cheese,
The antistatic property and the amount of wax deposited were measured. The results are shown in Table 3.

The pretreatment shown in Table 2 means a reduction cleaning step, which was carried out as follows. Prepare 10 liters of washing solution of sodium hydroxide 2 g / liter, hydrosulfite 2 g / liter, Celesh 700 (Kao Corporation chelating dispersant) 2 g / liter, and use PET 30 count yarn cheese (about 0.63 k
g), using a lab cheese dyeing machine, the liquid flow is in → out
The sample was treated with 90 ° C for 20 minutes. Subsequently, the liquid was drained, washed with water, drained, neutralized with 10 liters of a treatment liquid containing 0.1 g / l of acetic acid, drained again, and subjected to the above smoothing agent treatment.

Measurement of smoothness μmeter method, initial tension = 15 g, contact angle = 180 °, yarn speed = 200 m / min to measure the frictional force during running Friction body = chrome-plated satin 40φ Electricity measurement μmeter Method, initial tension = 15 g, contact angle = 180 °, yarn speed = 200 m / min, and the voltage generated during running is measured with a current-collecting potentiometer. Friction body = chrome-plated satin 40φ adhesion amount measurement n-hexane Measured by Soxhlet extraction as a solvent

[0032]

[Table 2]

[0033]

[Table 3]

(Example of Fogging Property) Using PET tropical dyed cloth, the solid content concentration of the invention product 1 shown in Table 1 was
After padding with a treatment solution prepared to be 2.14%, squeeze it to 100% and then dry at 50 ° C for 1 hour, diameter 70m
Take one circular test piece of m. Put one test piece in the beaker of the haze value tester shown in Fig. 1 and cover the top of the beaker with an iron lid with a round hole with a diameter of 40 mm.
mm, width 50 mm, thickness 5 mm transparent glass plate placed in an oil tank
Heat at 100 ° C for 5 hours. Take out the glass plate after heating Haz
The haze value was measured using an e meter (turbidity meter). The results are shown in Table 4.
Shown in.

[0035]

[Table 4]

[Brief description of drawings]

FIG. 1 is a diagram showing a haze value test apparatus.

Claims (2)

[Claims] 1. From an aqueous dispersion containing at least one wax base (A) selected from the group consisting of hydrocarbon waxes, hydrocarbon wax oxides and animal and vegetable waxes and cationized starch (B). A smoothing agent for car seat fibers. 2. A complex composed of at least one wax base (A) selected from the group consisting of a hydrocarbon wax, a hydrocarbon wax oxide and an animal and vegetable wax, a cationized starch and an anionic polymer ( C) A smoothing agent for car seat fibers consisting of an aqueous dispersion containing and.