JPS5824556B2 - Textile or paper processing methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for softening and water-repellent treatment of fibers or paper, and more specifically, the present invention relates to a method for softening and water-repellent treatment of fibers or paper, and more specifically, fibers or paper obtained by reacting an aliphatic monocarboxylic acid having 8 to 20 carbon atoms with an alkylene polyamine. This is a method of treating fibers or paper by treating an alkylated product obtained by reacting an amidide with epihalohydrin, either as it is or with a dispersion obtained by dispersing it in water using an emulsifier.

The performance required as a water repellent agent for textile products is generally that it does not have a negative effect on the texture or dyed products, and that when a water repellent agent or water/oil repellent agent is used in combination, its water repellency and oil repellency are required. Furthermore, for cellulose-based natural fibers, regenerated fibers, and semi-synthetic fibers, it has an effect of improving strength and wrinkle resistance, and for synthetic fibers, it does not inhibit the antistatic property when used in combination with an antistatic agent. etc. are listed.

It is also desired that the dispersion stability of other products be good over a long period of time.

Conventionally, as softening water repellents having this kind of function, methylolated products of C1□ to C18 linear fatty acid amides represented by stearic acid amide and their dispersions, emulsions of polyethylene, wax, etc. Aqueous solutions such as grade ammonium salts are known.

Among them, dispersions of methylolated fatty acid amides are widely used as high-quality products due to their texture, but the process of manufacturing them requires mechanical pulverization, which results in poor dispersion stability. The amount of surfactant used for dispersion must also be increased.

This has an adverse effect on various performances.

The present invention aims to provide a flexible water repellent treatment method that solves all of these conventional drawbacks and problems at once.

That is, the present invention deals with the use of a product obtained by reacting epihalohydrin with an amidated product obtained by reacting a fiber or paper with an aliphatic monocarboxylic acid having 8 to 20 carbon atoms and an alkylene polyamine. This is a method for treating fibers or paper, which is characterized by treating it using a dispersion prepared by dispersing .

The compound used in the present invention has surface-active rigid properties and therefore has good dispersion stability of an emulsion for a very long period of time.

Furthermore, the softening and water-repellent effect is far superior to that of conventionally known softeners, and also eliminates the drawbacks seen in conventionally known softeners.
Most of the problems have been solved when the carbon number is 8 according to the present invention.
Suitable aliphatic monocarboxylic acids are, for example, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, etc. Synthetic fatty acids may also be used.

Further, suitable alkylene polyamines include ethylene amines such as ethylene diamine, diethylene triamine, triethylene tetramine, and tetraethylene pentamine, propylene amines such as propylene diamine, iminobispropylamine, and methyliminobispropylamine, N-aminoethylpiperazine, There are piperazines such as piperazine.

As the alkylating agent, epihalohydrins such as epichlorohydrin, epibromohydrin, methylepichlorohydrin and the like, particularly preferably epichlorohydrin.

The reaction between an aliphatic monocarboxylic acid and an alkylene polyamine and the reaction between the resulting amidated product and an epihalohydrin are easily carried out by applying known dehydration condensation and alkylation reactions.

These estimated reaction formulas and estimated structural formulas of the products are as follows.

However, as an aliphatic monocarboxylic acid having 8-20 carbon atoms, for example, R-COOH (in the formula, R is an alkyl group having 7-19 carbon atoms), as an alkylene polyamine, for example, H2N+CH2CH2NH+rlCH2CH2NH2
(In the formula, n is an integer from 1 to 10.) The case where epichlorohydrin is selected as the epihalohydrin is shown below.

However, epichlorohydrin (in the formula, m is an integer of 2 to 10, p
, q is an integer such that p + q = n, q = m -2) (In the formula, p and q represent the same integers as above) The obtained target product is in the form of wax or solid, and can be used as it is or with an emulsifier. Disperse it in water to make a flexible water-repellent treatment liquid.

Nonionic, anionic, cationic, and amphoteric surfactants are suitable as emulsifiers, and are used in an amount of 0 to 20 parts by weight based on 100 parts by weight of the target product.

The emulsification method is achieved by adding the object to water or water to which an emulsifier has been added and stirring.

A suitable weight ratio of the target substance to water is 5:95 to 40:60.

The object product thus obtained has excellent performance as a softening and water repellent agent for fibers and paper.

The fibers used in the present invention include natural fibers such as cellulose, wool, and silk, synthetic fibers such as polyester, polyamide, and polyacrylonitrile, and semi-synthetic fibers such as cellulose acetate. It is appropriate to use 1 to 5%.

During processing, impregnation is carried out by dipping, spraying or coating methods, and adjustment is carried out using a conventional immersion drawing machine.

After impregnation, drying and heat treatment are usually performed.

When processing into paper, it can be added to pulp slurry using a Fourdrinier or cylinder paper machine, impregnated with an impregnation machine, or sprayed onto the surface of the paper using a spray machine. It is possible.

In the case of paper as well, it is appropriate to use 0.1 to 5% based on the weight of the paper.

Preferred combinations of raw materials for the softener and water repellent of the present invention are illustrated below.

Hereinafter, the method of the present invention will be explained in more detail with reference to Examples, but it goes without saying that the present invention is not limited to these.

Reference Example 1 50 g of a compound (compound 1) obtained using stearic acid, diethylenetriamine, and epichlorohydrin as raw materials, Noigen EA-120 (trade name of Dai-Kogyo Seiyaku Co., Ltd., nonylphenol polyoxyethylene ether) 31, and water 4471
and stirred at 90°C for 1 hour to obtain a dispersion of 495'? was obtained (referred to as product 1).

). In addition, 50 fI of the compound (1) was stirred with 450 l of water at 100°C for 30 minutes to obtain 493 fl of the dispersion.

(Product 2) Reference Example 2 Compound 65g obtained using stearic acid, iminobispropylamine, and epichlorohydrin as raw materials, Neoperex-5 (trade name of Kao Soap Co., Ltd., sodium dodecylbenzenesulfonate) 5S', water 43g ( A mixture consisting of 95
The mixture was stirred at ℃ for 1 hour to obtain 485 g of a dispersion (referred to as product 3).

). Reference Example 3 A mixture consisting of 50 ft of a compound obtained using lauric acid, N-aminoethylpiperazine, and epichlorohydrin as raw materials, 10 g of Amogen-K (trade name, lauryl dimethyl betaine, Dai-Kogyo Seiyaku Co., Ltd.), and 440 g of water was heated at 80°C. After stirring for a period of time, dispersion liquid 4967 was obtained (referred to as product 4).

). Example 1 Using products 1 to 4 obtained in Reference Examples 1 to 3, respective treatment liquids were created according to the formulations shown in Table 1.

Note *1 Sumitomo Chemical Co., Ltd. trade name, dimethylolglyoxal monougi 4 fl. 50 jars 2 Sumitomo Chemical Co., Ltd. trade name, 12% zinc borofluoride aqueous solution Next, using this treatment solution, a fabric was treated under the following processing conditions.

The treatment results are shown in Table-2.

Processing sample cloth: No. 40 cotton broad cloth No. 40 Tetron (65) / cotton (35) blended broad cloth immersion drawing; 2 Dips 2 Nips (drawing rate 7
0%) Pre-drying: 105°C x 2 acclimation curing; 150°C JIS Li2O2-
1972A Method (Spray Method) Example 2 Using Product 1 obtained in Reference Example 1, the effect of the paper internal addition method was investigated.

Product 1 in pulp dispersion (pulp used: N, B, Ni, P, Canadian standard water level: 563CC, pulp concentration 1.5%)
A softener was added to the pulp in an amount shown in Table 3 in terms of solid content ratio, and the mixture was stirred for 10 minutes.

This pulp dispersion was made into paper using a TAPPI standard paper machine, dehydrated by pressing, and then dried at 100° C. for 1 minute.

Then, it was left for 24 hours in an atmosphere of 20° C. and 65% relative humidity to adjust the humidity.

Table 3 shows the results of physical property tests of the obtained paper.

In the table, the smaller the numerical value in the column of bending resistance, the more flexible it is.

*: Indicates the amount of resin in the product/inside.

Claims (1)

[Claims] 1. A product obtained by reacting epihalohydrin with an amidated product obtained by reacting a fiber or paper with an aliphatic monocarboxylic acid having 8 to 20 carbon atoms and an alkylene polyamine, and dispersing the product in water as it is or using an emulsifier. 1. A method for treating fiber or paper, the method comprising treating fiber or paper using a dispersion liquid comprising: