KR850000178B1 - Soaping agent and soaping method - Google Patents

Abstract

The aqueous solution which contains products of HLB 8-14 is prepared by mixing fatty acidic triglyceride and multivalence alcohol which has 2-6 carbons and 2-6 oxalic radicals not exceeding the number of carbons, or desirably by mixing mixture of glycerin and oxidized ethylene. The dyeing products are sunk in the aqueous solutin to soap, to eleminate dyestuffs which are not adhered to the dyeing products.

Description

Washing method of dyed textile products

The present invention relates to a method for cleaning a dyed fiber product. Specifically, the present invention relates to a cleaning method for dyeing a fiber product containing polyester fiber with a disperse dye and then removing the unfixed dye.

In general, fiber products containing polyester fibers use disperse dyes for polyester fibers, and other fibers such as acid dyes, cationic dyes, reactive dyes, basic dyes, etc. for fibers of nylon, acrylic, wool, and cotton. Stain using.

Dyestuffs are usually subjected to a washing process to remove unfixed dyes or, in the case of printing, pastes, thereby clearing the pattern color, improving the feel, and increasing the various fastnesses.

In the case of dyes dyed with disperse dyes, washing with water in the washing step is attempted to increase the various fastnesses. However, in the case of using a disperse dye, the unfixed dye, once removed in the washing process, is applied to the fiber again, which tends to reduce the sharpness of the dye.

Especially in printing, when contamination on the white background occurs, the quality of the dyeing material is significantly reduced.

Therefore, in order to prevent such contamination and to increase various fastnesses, cleaning is generally performed by adding a surfactant, which is generally a cleaning agent, to a cleaning liquid.

As these cleaners, ethylene oxide adducts of fatty acid amines, ethylene oxide adducts of nonylphenyl ethers, ethylene oxide adducts of fatty acids and the like have been used so far.

However, even when these cleaning agents are used, the contamination prevention and the improvement of the fastness are still insufficient, and the metering has been strongly demanded in the dyeing and processing industry.

Therefore, the present inventors have solved these technical problems, and as a result, the use of a detergent obtained by adding ethylene oxide to a mixture of fatty acid triglycerides and polyhydric alcohols sufficiently improves the fastness of the fibers containing polyester fibers. The present invention has been accomplished by discovering that it can and can prevent re-contamination by unfixed dyes.

The fatty acid triglycerides used in the preparation of the cleaning agent of the present invention are not particularly limited, and generally triglycerides of higher fatty acids are used.

Higher fatty acids include behenic acid, stearic acid, oleic acid, linoleic acid, palmitic acid, myristic acid, lauric acid and caprylic acid.

In addition, these higher fatty acids may be used even if they are one kind or a mixture of two or more kinds.

In addition, fatty acid triglyceride may be used natural or synthetic.

Natural fats and oils which are natural fatty acid triglycerides are readily available and suitable for carrying out the present invention. Such natural fats and oils include vegetable oils, fats and oils, wild animal oils and palm oil, palm oil, cottonseed oil, castor oil, rapeseed oil, palm kernel oil, soybean oil, olive oil, flax oil and corn oil. There is a number.

As the polyhydric alcohol used in the present invention, a compound having 2 to 6 carbon atoms having 2 to 6 hydroxyl groups not exceeding the carbon number is preferable, for example, ethylene glycol, propylene glycol, glycerin, 1, 2 ⁻ , 1,3 ^-, and ^2,3-butylene glycol, 1,2 ^-, 1,3 ^-, 2,3 ^{-, 2,4-pentylene} glycol, 1,2 ^-, 1,3 ^-, 2,3 ^{- ',} and 2,4 ^-, and the like hexylene glycol, butane triol-pentane triol, hexane triol, pentaerythritol, sorbitol, mannitol, xylitol, Dooley toll.

Among these polyhydric alcohols, those having 3 carbon atoms, particularly glycerin, are most suitable for the purposes of the present invention. Moreover, you may use 2 or more mixtures of these polyhydric alcohols.

HLB values have a significant effect on the ethylene oxide adduct properties of the present invention as cleaning agents.

In other words, the product obtained according to the present invention was found to give a particularly excellent effect on the performance as a cleaning agent, that is, frictional fastness and white ground contamination when the HLB value is in the range of 8 to 14.

Therefore, the molar ratio of the fatty acid triglyceride and polyhydric alcohol used or the molar ratio of the mixture of fatty acid triglyceride and polyhydric alcohol is not particularly limited as long as the HLB value is in the range of 8-14. 0.1 to 5 moles, preferably 0.2 to 2 moles, per mole of ceride are used and ethylene oxide is used in an amount of 1 to 50 moles, preferably 5 to 25 moles per mole of fatty acid triglycerides and polyhydric alcohols.

The addition reaction is not particularly limited and can be carried out under conditions of addition reaction of ethylene oxide to a compound having active hydrogen which is generally performed.

That is, a catalytic amount of an alkaline substance is added to the mixture of the triglyceride and the polyhydric alcohol mixed in the molar ratio, and ethylene oxide is introduced into the reaction at about 100 to 200 ° C. at 1 to 5 kg / cm 2 for several hours.

The product obtained by this addition reaction is a mixture of multiple compounds, the details of the composition of which are not clear, but the compound in which ethylene oxide is added between the fatty acids constituting triglycerides and glycerin derived from polyhydric alcohols or triglycerides is a main component. It is assumed to be.

The washing method of the present invention comprises preparing an aqueous solution containing a product obtained by adding ethylene oxide to a mixture of fatty acid triglyceride and polyhydric alcohol in a bath, and washing the dye by immersing the dye in the aqueous solution.

Specifically, the washing step according to the present invention proceeds by dipping or washing under the following conditions.

(1) 1 to 5, preferably 2 to 3 g / l detergent concentration

(2) the bath ratio of the solution to the fibers of 1: 10 to 1: 60, preferably 1: 20 to 1: 40

(3) cleaning for 3 to 20, preferably 5 to 15 minutes

(4) None.

(5) The bath temperature cleaning of 50 to 90 (preferably 60 to 80 ° C.) can be effectively carried out by either batch or continuous method.

In addition, the reducing washing step can be carried out in the present invention using a reducing agent in an appropriate amount.

The amount is preferably 1 to 3 g / l.

Preferred reducing agents are combinations of hydrosulfite and caustic soda, thiourea dioxides or other conventional reducing agents.

Hereinafter, the present invention will be described according to examples.

Example 1

The polyester fibers were printed as colorful paste having the following composition, followed by preliminary drying at 100 ° C. for 3 minutes and steam treatment at 180 ° C. for 3 minutes, and the printed fibers were subjected to various cleaning agents 2 g / l and 1 g of caustic soda as shown in Table 1. / l and 2 g / l of sulfuric acid were washed for 10 minutes at a bath ratio of 1:30 and a temperature of 80 ° C. After washing for 5 minutes at 40 ℃ flowing water, and then measured for white ground contamination, friction fastness.

The results are shown in Table 1.

In addition, the expression of HLB is the expression of griffin

HLB value = 20 (1-S / A)

S: Influencer

A: Acid value of the fatty acid used

Was obtained.

At this time, the reduction value of the reaction mixture was calculated by dividing the reduction value of the used triglyceride by the weight increase rate by polyhydric alcohol and ethylene oxide, and the acid value was the acid value of the used triglyceride and the fatty acid formed by decomposition. (See Surfactant Handbook 308, Industrial Edition Co., Ltd., 1960.) The friction fastness is based on the method of JISL-0849. In other words, the staining of the dyed fiber with a white cloth under a certain load was measured with a white cloth on a gray scale for contamination (White Council's dye fastness), and the friction fastness was based on the measured contamination. It was measured by.

The degree of contamination of the white ground was treated with white cloth with the same cloth dyed from the same cloth, and the contamination of the white cloth was specified by the gray scale for contamination (Japan Color Association Dyeing Fastness Committee).

TABLE 1

Example 2

Table 2 shows the results of the same treatment as in Example 1 except that the dye of Example 1 was replaced with Kayalon Polyester Navy Blue 2G-SF Paste (manufactured by Nippon Kayaku Co., Ltd.). Marked on.

TABLE 2

Example 3

2 g / l Sodahee 2 g / l temperature shown in Table 3 using the same amount of dyeing polyester fibers by the method of Example 1 and dyeing cotton fibers under the following conditions, temperature 89 ℃, time 10 The particles were washed in a ratio of 1 to 30 minutes and then washed for 5 minutes in running water at 40 ° C., and the frictional fastness of the polyester fibers and cotton fibers and the degree of white ground contamination were measured. The results are shown in Table 3.

[Color composition]

[Printing condition]

After printing, it was pre-dried (5 minutes at 80 ° C), followed by steaming (5 minutes at 130 ° C), followed by washing.

TABLE 3

Example 4

The polyester / cotton fiber (weight ratio 65/35) is printed with the following composition of color, predrying is performed at 80 ° C for 5 minutes, hot air fixation at 190 ° C for 1 minute, and heat treatment at 130 ° C for 3 minutes. This salt was wash | cleaned at bath ratio 1:30, the cleaning agent 2g / l shown in Table 4, temperature 80 degreeC, and time 10 minutes. After washing for 5 minutes in 40 ℃ flowing water was measured for the friction fastness and white ground contamination. The results are shown in Table 4.

[Color composition]

TABLE 4

Claims (1)

Contains the product of HLB 8-14 obtained by adding ethylene oxide to a mixture of fatty acid triglycerides with polyhydric alcohols having 2 to 6 carbon atoms and not having more than 2 carbon atoms, preferably glycerin, in the zozo Preparing an aqueous solution, and immersing the dyeing material in the aqueous solution under washing conditions of a detergent concentration of 0.5 to 3 g / l, a bath ratio of the solution to the fiber of 1: 5 to 1:40, and a bath temperature of 60 to 100 ° C. A method of washing a dyed fiber product comprising polyester fibers dyed with a disperse dye, which comprises a step of washing with water, thereby removing unfixed dyes.