JPS6339713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a modification treatment method for improving the dyeability of structures containing cellulose fibers.

Previously, attempts have been made to successfully dye cellulose fibers using dyes such as disperse dyes that do not naturally dye cellulose fibers, such as Japanese Patent Publications No. 47-40593, No. 47-51734, No. 50-12389, No. 1977-
38213, JP-A No. 50-90788, JP-B No. 50-29552, etc., it is mainly done by fiber processing methods, or chemically modifying cellulose fibers that usually have no affinity for disperse dyes. Japanese Patent Publication 1973-
18778, Japanese Patent Application Laid-Open No. 51-99185, and other methods are known. However, although these fiber processing methods described above are possible by using relatively simple equipment, the dyeing property lacks sharpness and the color fastness, especially the wet fastness, is not good.
On the other hand, conventionally known methods of chemically modifying cellulose have poor workability due to the irritation and odor of the chemicals themselves, and require very expensive installation investment.

In order to solve these problems, the present inventors first treated cellulose fibers or cellulose fiber-containing structures with an alkaline agent and an acid chloride such as P-toluenesulfonyl chloride in any order, and then further steam-treated or He invented a dyeing method that involved chemical modification through dry heat treatment, followed by direct or transfer printing with disperse dyes, oil-soluble dyes, mordant dyes, basic dyes, vat dyes, etc., and applied for a patent. Furthermore, the present invention has also been filed for an invention in which the present invention can be further simplified by treating the acid chloride in an emulsified state in water.

The present invention has been developed to make these conventional inventions more effective and simple, taking into account actual productivity.

That is, in the present invention, a structure containing cellulose fibers is treated with an alkaline agent, and then coated with an emulsion in water containing at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant. This modification processing method is characterized in that the cellulose fiber portion of the structure is chemically modified to be dyeable with a disperse dye by subsequently performing a dry heat treatment. The inventors chemically modified the cellulose fiber part of a cellulose fiber-containing structure using an acid chloride-in-water emulsion to make it dyeable with disperse dyes, and by using bentonite in addition to a vegetable natural sizing agent. Due to the inorganic and inert characteristics of bentonite, efficient chemical modification can be carried out with extremely little reaction inhibition, and the ability to remove excess deposits after chemical modification is extremely good. Moreover, it was discovered that bentonite in the cleaning solution is extremely easy to dispose of, as it is also used in general wastewater treatment due to its sedimentation properties. That is, according to the present invention,
After the cellulose fiber-containing structure is treated with an alkaline agent, it is coated in a wet state with an emulsion in water consisting of at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant. By drying the fabric using an extremely simple existing fabric drying device such as a pin tenter oven, the cellulose fibers in the cellulose fiber-containing structure can be chemically modified to be dyeable with disperse dyes, and furthermore, they can be washed easily after washing. But soaping,
Excess deposits can be removed with an extremely simple cleaning process such as washing with hot water. The inventor filed the application first.
A chemical modification method for making cellulose fibers dyeable with disperse dyes by coating with an acid chloride-in-water emulsion containing only cellulose derivatives such as CMC (carboxymethyl cellulose) as a thickener. The present invention has finally solved the problem of removing excess deposits such as glue after chemical modification, which has been a difficult problem in actual production.

Examples of the alkaline agent used in the present invention include hydroxides of alkali metals or alkaline earth metals such as lithium, sodium, potassium, beryllium, magnesium, calcium, barium, and strontium.

Examples of acid chlorides used in the present invention include benzoyl chloride, parachlorobenzoyl chloride, toluoyl chloride, paranitrobenzoyl chloride, paramethoxybenzoyl chloride, acetyl chloride, propionyl chloride, butyryl chloride, isobutyryl chloride, acryloyl chloride, oxalyl chloride,
Carboxylic acid chlorides such as succinyl chloride, para-toluenesulfonyl chloride, orthotoluenesulfonyl chloride, benzenesulfonyl chloride,
Meta-nitrobenzenesulfonyl cloide, ortho-nitrobenzenesulfonyl cloide, para-nitrobenzenesulfonyl cloide, toluene-3,
4. Sulfonic acid chlorides such as disulfonyl chloride have the general formula shown below.

(X means H, -CH ₃ , -NO ₂ , SO ₂ Cl) Furthermore, the vegetable natural thickening agents used in the present invention include starches such as wheat flour, rice flour, rice sugar, and corn, and gum tragacanth. , natural rubbers such as gum arabic, and seaweeds such as funori and sodium alginate.

Further, as a method of treating a cellulose fiber-containing structure with an alkali agent and then coating it with an emulsion in water consisting of at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant, a vegetable natural sizing agent, The viscosity can be adjusted by adjusting the amounts of bentonite and nonionic surfactant, and a roll coating method, a spray coating method, an air knife coating method, a flow coating method, a gravure coating method, a rotary screen method, etc. can be used.

The present invention will be further explained in detail below using the drawings. That is, FIG. 1 shows a schematic diagram of the reforming apparatus used in the present invention, in which raw fabric 1, which is a cellulose fiber-containing structure, is passed through an alkali tank 2 and squeezed so that the amount of alkaline agent treated is uniform. It is squeezed by a roll 3 and then introduced into rotary screen coating devices 4, 5, and 7, where it is uniformly treated with an emulsion in water containing at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant. That is, 4 indicates a rotary screen plate, 7 indicates a back-up roll, 5 indicates a squeegee, and 6 indicates at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant supplied in the rotary screen plate. The water-in-water emulsion contained therein is processed onto the raw fabric 1 through the rotary screen plate 4 by the pressure of the squeegee 5 and the back-up roll 7. The fabric treated with the water emulsion is led to a dryer 8, where chemical modification is completed when it passes through the dryer 8, and then to a soaping liquid tank 9 and a hot water bath 1.
0. After successively passing through a water bath 11, the fabric is sufficiently dried in a dryer 12 to obtain the desired chemically modified fabric 13 dyeable with disperse dyes.

A more detailed explanation will be given below in Examples.

Example 1 (1) Mercerized polyester/cotton =
A 65/35 blended bloat cloth was immersed in a 10% aqueous sodium hydroxide solution, and then squeezed using a squeezing roll to achieve a squeezing rate of 90%. Next, this fiber fabric was treated with an emulsion in water having the following formulation using a rotary screen plate having a nickel plate thickness of 150 μm and an aperture ratio of 50% with a number of lines of 40 lines/inch.

Emulsified liquid O-Toluenesulfonyl chloride 25 parts by weight Toluene 25 〃 Water 50 〃 Sodium alginate 1 〃 Bennite 2 〃 Nitsusan Nonion NS- 206 (Nonionic surfactant manufactured by NOF Corporation) 1.5 〃 Nitsusan Nonion NS- 210 (Japan Nitsusan Nonion NS-220 (Nonionic surfactant manufactured by Nihon Yushi Co., Ltd.) 1.5 Next, this treated cloth was dry heat treated at 80°C for 90 seconds using a pin tenter oven. Thereafter, the cloth was soaped with Marcel soap, washed with hot water, washed with water, and dried for several minutes to obtain a modified cloth.

(2) Next, gravure printing was performed on 60 g/m ² single-sided starch-coated paper using ink having the composition shown below to obtain a transfer paper.

<Ink> Sumikaron Red E-FBL bulk powder (manufactured by Sumitomo Chemical Co., Ltd.) 10 parts by weight Ethylcellulose N-7 (manufactured by Hercules Co., Ltd.) 9 〃 Surfactant 1 〃 Isopropyl alcohol 40 〃 Ethyl alcohol 40 〃 (3) (1) Naru Kai Layer the transfer paper (2) on the pawn cloth,
When transfer printing was carried out by heating and applying pressure at a temperature of 195° C., a pressure of 300 g/cm ² , and a time of 40 seconds, a red printed cloth with the same density in the polyester fiber portion and the cotton portion was obtained.

Example 2 (1) Mercerized polyester/cotton =
A blended broad cloth made of 65/35 was immersed in a 10% sodium mercury aqueous solution and squeezed using a squeezing roll to achieve a squeezing rate of 90%. Next, this fiber fabric was processed according to Example 1 using an emulsion having the following formulation.
It was processed using the rotary screen plate described in (1).

Emulsified liquid O-toluenesulfonyl chloride 10 parts by weight P-toluenesulfonyl chloride 15 〃 Toluene 25 〃 Water 50 〃 Sodium alginate 1 〃 Bentonite 2 〃 Nitsusan Nonion NS- 206 (nonionic surfactant manufactured by NOF Corporation) 1.5 〃 Nitsu Sunnonion NS- 210 (nonionic surfactant manufactured by NOF Corporation) 1.5 〃 Nitsusan Nonion NS- 220 (nonionic surfactant manufactured by NOF Corporation) 1.5 〃 Next, this treated cloth was heated to 100% using a pin tenter oven. After dry heat treatment at ℃ for 30 seconds, soaping with Marcel soap, washing with hot water, washing with water, and thorough drying to obtain a modified fabric.

(2) Next, the modified fabric obtained in (1) was heated at 195℃ for 35 seconds using a dry transfer printing paper manufactured by Toppan Printing Co., Ltd.
When transfer printing was carried out under a pressure of g/cm ² , a realistic printed fabric was obtained.

Example 3 (1) Mercerized polyester/cotton =
65/35 blended broadcloth with 10% NaOH
It was immersed in an aqueous solution and squeezed with a squeezing roll to achieve a squeezing rate of 90%. Next, this fiber fabric was treated with the rotary screen plate described in Example 1 (1) using an emulsion having the following formulation.

Benzoyl chloride 15 parts by weight Toluene 15 Water 50 Sodium alginate 1 Emulsified benite 2 Nitsusan Nonion NS-206 1.5 Nitsusan Nonion NS-210 1.5 Nitsusan Nonion NS-220 1.5 Next, use this treated cloth In pin tenter oven
After dry heat treatment at 100℃ for 30 seconds, soaping with Marsen soap, washing with hot water, and then washing with water,
After sufficient drying, a modified cloth was obtained.

(2) Next, using dry transfer printing paper manufactured by Toppan Printing Co., Ltd., the modified fabric obtained in (1) was heated at 195°C for 35 seconds.
Transfer printing was carried out under a pressure of 150 g/cm ² and a beautiful printed cloth was obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 shows a schematic diagram of an apparatus used in the modification processing method of the present invention. 1... Raw fabric, 2... Alkali tank, 3... Squeezing roll, 4... Rotary screen plate, 5... Squeegee, 6... Emulsion, 7... Back-up roll, 8... Dryer, 9 ...Soaping bathtub, 10...Hot bathtub, 11...Water bathtub, 12...
...Drying dryer, 13...Modified cloth.

Claims (1)

[Claims] 1. A cellulose fiber-containing structure is treated with an alkaline agent, then coated with an emulsion in water containing at least an acid chloride, a vegetable natural sizing agent, bentonite, and a nonionic surfactant, followed by a dry heat treatment. A dyeing method characterized by chemically modifying the cellulose fiber portion of the structure to make it dyeable with a disperse dye, and then dyeing it with a disperse dye.