JPH0280664A - Method for finish processing textile product - Google Patents

Abstract

PURPOSE:To enable textile finish processing, remarkably improved in resistance to washing and excellent in durability by providing a cationic textile product and then treating the textile product with an anionic or ampholytic textile finishing agent reactive with functional groups having the above-mentioned cations. CONSTITUTION:A textile product is treated with a cationic agent to provide a cationic product, which is then treated with an anionic or ampholytic textile finishing agent reactive with functional groups having the afore-mentioned cations to firmly bind the above-mentioned textile finishing agent to the afore- mentioned cationic textile product. A quaternary ammonium compound having chlorohydrin group or epoxy group, polycationic compound, etc., are cited as the cationic agent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a finishing method for textile products with excellent durability.

[Prior Art] In general, various fiber products such as threads and fabrics are modified by improving the texture, by imparting properties such as hydrophilicity, water repellency, and antistatic properties, and by imparting properties such as flame retardancy. Finishing processing using various finishing agents is often performed for the purpose of imparting new functions.

Among these, finishing processing that improves the texture (feel) by imparting appropriate flexibility and smoothness to textile products is called flexible finishing processing.Currently, various cations ( (including amphoteric), anionic, and nonionic surfactants are used. This reduces the coefficient of static friction between the fibers or between the fibers and the fingertips, giving a softer feel. It also prevents a decrease in tear strength and rough texture, which are disadvantages of resin processing, and improves the sewing quality of resin-processed synthetic fiber products. It improves properties and has various side effects such as imparting water repellency and imparting hydrophilicity, and is extremely important for increasing commercial value.

Furthermore, various surfactants and various compounds are used as finishing agents for fibers for the purpose of imparting hydrophilicity, water repellency, antistatic properties, flame retardancy, etc.

[Problems to be Solved by the Invention] However, in conventional finishing processing, strong bonding force hardly acts between fibers and surfactants and other finishing agents. In other words, synthetic fibers such as cellulose fibers, polyester, and acrylic fibers are somewhat negatively charged, but because their anionic properties are weak, their bonding strength with cationic finishing agents is weak, and they can be removed by soaking in water or washing. Resulting in.

Wool, silk, nylon, etc. exhibit amphoteric properties, but they also have weak ionic properties and cannot provide strong bonding strength with textile products.

In other words, it can be said that these finishing agents are simply attached to the fiber molecules.

Moreover, the amount of adsorption onto fibers is also small.

Therefore, in order to deposit or bond the required amount, it is necessary to increase the finishing agent concentration in the treatment bath, lengthen the treatment time, or gently squeeze the treatment bath to deposit a large amount of the finishing agent.

Therefore, problems such as extra cost and waste liquid treatment are costly and labor-intensive have arisen.

However, even with such a time-consuming and costly finishing process, most of the finishing agent comes off after one or two washes. That is, the major drawback of conventional finishing treatments is that they have almost no washing resistance.

[Means for Solving the Problems] In view of the above-mentioned current situation, the present inventor has completed the finishing method of the present invention as a result of intensive research, and its feature is that textile products are cationized. , an anionic or amphoteric fiber finishing agent that reacts with the cationic functional group is bonded to the cationized textile product.

That is, this method is characterized in that the finishing agent is not directly attached to the textile product, but the textile product is cationized.

Here, textile products refer to various types of fibers such as cotton, thread, woven fabrics, knitted fabrics, non-woven fabrics, sewn and molded products thereof, carpets, artificial leather, and other products made of fibers. Fibers include natural fibers such as cotton, silk, and wool, semi-synthetic fibers such as rayon, acetate, and cupro, and synthetic fibers such as polyester, nylon, acrylic, and others.

Cationization of textile products refers to adding cations to fiber molecules, and any method, cationization agent, etc. may be used for this purpose. Adding cations means adding cations to the fiber molecules of textile products by reacting compounds with cationic functional groups, or adsorbing and fixing molecules with cations to ta fiber molecules, etc. It is a concept that includes.

As a cationizing agent, a quaternary compound having a chlorohydrin group is used.
Examples include quaternary ammonium compounds, quaternary ammonium compounds having an epoxy group, quaternary ammonium compounds having a long-chain alkyl group, and polycationic compounds. For example, a seven-mer homopolymer containing a cation such as dimethyl diallylammonium chloride, diethyl sulfate of vinylpyridine, dimethylaminoethyl acrylate, diethyl sulfate of dimethylaminoethyl methacrylate, diethylaminoethyl acrylate or its diethyl sulfate. , and copolymers of these heptamers and heptamers having copolymerizable unsaturated bonds (e.g., ethylene acrylate, propyl methacrylate, N-methylolacrylamide, etc.), distearyldimethylammonium chloride, stearyltriethylammonium There are chloride etc.

As this cationizing agent, the following compound developed by the present inventor (Japanese Patent Application No. 58-238484, JP-A-60-134
080), 1. It can be cationized more firmly and is superior in various respects.

This cationizing agent is represented by the following formula [1]. However, in formula [1], A is an alkylene group having 1 to 8 carbon atoms substituted with a hydroxyl group, or a group represented by formula [2] (in formula 2, p
and q is an integer of 1 to 8). In addition, in formulas 1 and 2,
n is an integer from O to 2, X is halogen, RI% R2, R3
, R4 and R5 are an alkyl group having 1 to 4 carbon atoms, an alkyl group having 1 to 4 carbon atoms substituted with a hydroxyl group or a cyano group, or an unsaturated alkyl group having 1 to 4 carbon atoms, Ql, Q2
and Q3 represent formula [3] or formula [4], respectively. Furthermore, Y
is a halogen, and X and Y may be the same or different.

This cationizing agent has two or more quaternary ammonium groups in its molecule, and has two or more halohydrin groups and/or epoxy groups as reactive groups, so 3-chloro-2hydroxypropyltrimethylammonium Compared to chloride and 2,3-epoxypropyltrimethylammonium chloride, which have only one reactive group such as chlorohydrin group or epoxy group in the molecule,
It has the characteristics of having a large molecular weight, a large affinity for fiber molecules, and high reactivity. Furthermore, this compound is soluble in water and reacts efficiently with fiber molecules in the presence of an alkaline catalyst.

The cationizing agent is not limited to those mentioned above, and any agent that can be cationized may be used. Further, the method of cationization is not particularly limited, and any conventional method may be used.

Anionic or amphoteric finishing agents for fibers refer to surfactants and other compounds that are anionic or amphoteric and exhibit softening properties, water resistance, water absorption, antistatic properties, flame retardant properties, and the like.

For example, ■ Higher fatty acid salts (soaps) such as Na salt of stearyl carboxylic acid, ■ Sulfate ester salts of higher alcohols such as stearyl alcohol, oleyl alcohol, and sulfate esters of monoesters of oleic acid and polyethylene glycol, ■ Stearyl Sulfonic acid salts containing higher alkyl groups such as sulfonic acid Na salts, sulfosuccinic acid dialkyl esters, and alkylaryl sulfonates;
Anionic surfactants such as alkyl phosphates such as stearyl phosphate and propyl phosphate are used. Also used are amphoteric surfactants such as monochlorosodium acetate adducts of trialkylamines, monochlorosodium acetate adducts of alkylimidacillins, and aminoalkanesulfonates. These are those that have been conventionally used as fabric softeners, water repellents, water absorption agents, antistatic agents, flame retardants, and the like.

In the present invention, a finishing substance is firmly and highly efficiently bonded to the fiber molecules by cationizing the fiber molecules and bonding an anionic portion such as a surfactant to the cationized portion. The finishing agents themselves may be conventional and do not claim any rights as such.

Note that, of course, there is no limit to the simultaneous use of several types of finishing agents. Further, it is also possible to use a resin processing agent, a nonionic surfactant, and other chemicals at the same time.

[Example code] Next, the present invention will be explained in more detail with reference to Examples.

Example 1 A cationization treatment solution was prepared by adding a 1.5% solution of sulfurium hydroxide to a commercially available aqueous solution containing 5.0% of 3-chloro-2-hydroxypropyltrimethylammonium chloride.

The refined cotton knit white cloth was immersed in the above treatment solution at room temperature for 5 minutes, squeezed with a roll to a squeezing rate of 100%, and immediately
It was dried for 10 minutes at 0 degrees. Next, it was washed with water, neutralized with acetic acid, further washed with water, and dried.

Next, the above cation-treated cloth was immersed in a 5 g/l aqueous solution of Royal Soft A-10 (a sulfonate type anionic surfactant manufactured by Nikaisha Yushi Kogyo) (bath ratio 1:30), 6
It was treated at 0°C for 30 minutes.

This was squeezed to 100% by centrifugal dehydration and then dried to obtain a softened cloth.

In the comparative example, a cotton knit white cloth was directly softened in the same manner as in the example without being cationized.

The fabric of the example exhibited excellent flexibility with a "slimy feel" and also showed a score of 50 in the water strength test using the spray method (JIS-Li2O2). Moreover, it retained considerable flexibility even after washing 110 times, and its water repellency also showed a score of 50.

On the other hand, in the comparative example, the flexibility was good immediately after the softening process (theta water resistance was 0 points, not at all. Moreover, after washing once or twice, the flexibility returned to the same feel as the original fabric. Ta.

The washing conditions were the same for each example, with 2 g/l of detergent (
Add household detergent ``Top'' manufactured by Lion ■ to a laundry bath (bath ratio 1:100), stir at 40℃ for 15 minutes, and wash with water 2.
One cycle consisted of drying at 110° C. for 10 minutes. In addition, the judgment of flexibility (hand test) is a sensory judgment based on handling.

Example 2 Hexamethylene-bis(3chloro-2-hydroxypropyl dimethylammonium chloride) described in Japanese Patent Application Laid-open No. 134080/1980, which is an invention of the present inventor.
A treatment solution is prepared by adding a 1.2% sodium hydroxide solution to an aqueous solution containing 3.2%.

The rayon cloth was immersed in the above treatment solution at room temperature for 5 minutes, squeezed with a roll to a squeezing rate of 80%, and immediately dried for 10 minutes in a hot air drying layer kept at 110°C. Next, the sample was washed with sufficient water, a small amount of acetic acid was added to the washing water to make the washing water neutral, the washing water was replaced, the washing water was washed again, and the pretreatment was completed by air drying.

Next, 5 of Sofnal 750 (higher alcohol sulfate ester salt type anionic softener manufactured by Ipposha Yushi Kogyo 9)
The cation-treated cloth was immersed in the g/l aqueous solution (bath ratio 1:30) and treated at 60° C. for 30 minutes. This was squeezed to 100% by centrifugal dehydration and then dried to obtain a softened fabric. In the comparative example, the rayon cloth was directly softened in the same manner as in the example without being cationized.

The fabric of the example exhibited excellent softness with a slimy feel and retained considerable flexibility even after 10 washes. In the comparative example, the feel was good immediately after softening, but after washing once or twice, the feel returned to the same as the original fabric.

Example 3 A polymer of dimethyldiallylammonium chloride (average molecular weight about 5000) was dissolved in water to make a 5% solution, and an acrylic knit was immersed in the solution at 60°C for 30 minutes (bath ratio 1:20), followed by centrifugal dehydration. It was dehydrated to 90% in a machine and dried at 90°C for 60 minutes to fix the cationizing agent.

Next, the cation-treated acrylic knit was immersed in a 3 g/l aqueous solution of sodium stearyl phosphate at 40°C for 60 minutes (bath ratio 1:30), dehydrated to 80%, and dried at 90°C for 60 minutes. did. In the comparative example, the acrylic knit was directly finished without being cationized.

The knit obtained in the example had a soft texture, and the frictional charging voltage (J I 5-L-1094B> was measured (65%RH)
120° C.), it was found to be 500 ■. Incidentally, the raw fabric showed a frictional charging voltage of 3500V, and the comparative example showed a frictional charging voltage of 1500V.

The frictional charging voltage after washing 10 times is 1000v in the example.
The original fabric had a voltage of 3500V, and the comparative example had a voltage of 3000V. The feel was also good in the Examples, but the feel in the Comparative Examples returned to the same as the original fabric.

Example 4 A copolymer of dimethylaminoethyl acrylate, ethyl methacrylate and N-methylolacrylamide (molar ratio 4:10.2, number average molecular weight approximately 50,000) was dissolved in water to make a 10% solution, and A polyester fiber cloth was soaked for 2 minutes, squeezed with a roll to a squeezing rate of 100%, immediately dried at 110°C for 10 minutes, and further dried at 150°C.
It was heat-treated at ℃ for 5 minutes.

Oleic acid and polyethylene glycol (molecular weight 600)
10g of sulfuric acid ester of monoester with //water f
The above cationized cloth was immersed in liquid 6 at 80°C for 30 minutes (bath ratio 1:20), and then centrifugally dehydrated to 100%
Squeezed and dried. In the comparative example, the polyester fiber cloth was directly subjected to finishing treatment without being cationized.

In the examples, the fabric felt softer and more elegant than the original fabric, and also showed water absorption. The same thing happened after washing 10 times. On the other hand, the comparative example was slightly soft and slightly water-absorbent immediately after processing, but after one wash, it returned to the same feel as the original fabric and no longer exhibited water-absorbency.

Example 5 A 5% aqueous solution of a copolymer of N-methyl-4-vinylpyridinium chloride, propyl methacrylate, and N-methylolacrylamide (molar ratio 5:1:0.1) was prepared, and wool/polyester (blending ratio 15:85) Soaked fabric at room temperature for 5 minutes and squeezed to 100% with a roll 11
It was dried at 0°C for 10 minutes. Then, it was heat-treated at 150° C. for 3 minutes to undergo cationization treatment.

Next, the treated cloth was immersed in a 5% aqueous solution of Tweetster-77 (ampholytic betaine type antistatic agent manufactured by Nichisha Yushi Kogyo) for 5 minutes at room temperature, and then dried at 100° C. for 10 minutes. In the comparative example, antistatic treatment was performed directly without cationization treatment.

When the frictional charging voltages of the cloths and original cloths of the above examples and comparative examples were measured, they were 300V, 1000V, and 4000V, respectively.
Met. After washing for 10 minutes, the same <500V, 3500
V, 4100V, which shows that the washing resistance of the example is excellent.

Example 6 0.3% of soda ash was added to a 3% aqueous solution of hexamethylene-bis (2,3° epoxypropylammonium chloride) described in JP-A-60-134080, which is an invention of the present inventor. Prepare a treatment solution.

The wool carpet woven fabric was immersed in the above treatment solution at 60° C. for 60 minutes (bath ratio 1:30), washed with water, neutralized with acetic acid, further washed with water, and air-dried to be cationized.

Next, 15% ammonium salt of monopropylene phosphate, 2% IP flake stone seedlings (sodium salt of higher fatty acids, manufactured by Ipposha Yushi Kogyo ■) and 5% ammonium bromate were added.
% was prepared and used as a treatment solution.

The cationized wool carpet fabric was immersed in this treatment solution at room temperature, and squeezed with a roll to a squeezing rate of 100%.
It was dried at 10°C for 20 minutes. Comparative examples were immersed and dried in the same manner as above in the treatment solution without cationization.

The woven fabric of the example was flexible and passed the flame retardant test (45 degree method of the Fire Service Act). Even after 10 washes, the flexibility and flame resistance remained the same. On the other hand, the woven fabric of the comparative example was flexible immediately after processing and passed the flame retardant test, but after one wash it returned to the same feel as the original fabric and failed the flame retardant test.

As described above in detail, the textile product finishing method of the present invention involves once cationizing the textile product, and then adding anionic or amphoteric softeners, water repellents, water absorbing agents, antistatic agents, flame retardants, etc. It is treated using a finishing treatment agent. Therefore, the finishing agent is strongly bound to the fiber molecules by ionic bonding, and as is clear from the examples, the washing resistance is significantly improved compared to conventional processing methods. Therefore, it is possible to easily improve the quality, quality, and functionality of textile products.

Furthermore, the speed at which the finishing agent adsorbs onto fiber molecules increases and the amount of adsorption increases, allowing treatment to be completed in a shorter time with a lower bath concentration compared to conventional methods, and treatment costs, including waste liquid treatment, are significantly reduced. These are extremely significant.

[Effect of the invention]

Claims (1)

[Claims] 1. A method for finishing a textile product, which comprises cationizing the textile product and bonding to the cationized textile product an anionic or amphoteric finishing agent for fibers that reacts with the cation-containing functional group.