JPS609979A - Dyeability enhancer of cellulose base material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dyeability improver for cellulose-based materials, and more specifically, in dyeing processing of cellulose-based materials such as paper, valves, wood, etc. The present invention relates to a dyeability improver that increases the dye exhaustion efficiency of a base material and improves the workability, economic efficiency, and versatility of dyes in subsequent dyeing processes.

Traditional paper, bulb, cellophane, seed, -V, wood.

For dyeing wood and wood assembled products, direct dye 9
Reactive dyes and acid dyes are often used. However, the affinity between the cellulose base material and the dye is not necessarily high, and therefore, in order to improve the dyeing properties, the dye concentration in the dye bath was increased or the treatment was carried out at high temperatures for a long time. or use a mordant together. Even after such treatment, there is still a large amount of unadsorbed dye in the waste liquid, which is an unfavorable situation from an economic point of view.

As described above, conventional dyeing methods for cellulose substrates have various problems due to the low adsorption rate of dyes, and are unsatisfactory in meeting the demands of improving dyeing properties and reducing the cost of dyeing processing. there were.

In response to these demands, a treatment method using a compound represented by the following general formula (1) or (1()) has been proposed as a method for improving the dyeing method of cellulose substrates (Japanese Patent Publication No. 39-5985, Japanese Patent Publication No. 53-65478).

(In formulas (1) and (11), R, R' and R" are alkyl, alkenyl, having a straight chain or side chain having 1 to 22 carbon atoms,
Alkylaryl, hydroxyalkyl.

It represents each organic group of amidoalkyl, polyethenoxy, and ester alkyl, X represents a halogen atom, and Y represents an anion. ) However, although it has been recognized that these compounds improve dyeability to some extent, they require a large amount of the compound in order to obtain a predetermined dyeability, which proves to be extremely disadvantageous economically.

Therefore, the present inventors conducted intensive studies to solve these problems and obtain a dyeability improver for cellulose-based materials that could meet the demands for technological innovation. The present invention was achieved by discovering that the method is extremely effective and contributes to improving dyeability and reducing the cost of dyeing treatment.

That is, the present invention is based on the general formula (I) (In formula (I), R, R, R, and Ro are each hydrogen.

It is an alkyl group, cycloalkyl group, aryl group having 1 to 18 carbon atoms, or an aralkyl group having 7 to 18 carbon atoms, n is an integer of 2 or more, m is an integer of 1 or more, and A and A2 are Each is hydrogen, −0, except when both are hydrogen.
H20HOH2X (X is a person.

It is an acid residue. ) A dyeability improving agent for cellulose base materials is provided, which is comprised of a compound represented by the following formula.

The compound represented by general formula (I) according to the present invention can be produced by various known methods.

For example, a polyalkylene polyamine represented by the formula (IO (formula nail), Rt , R2, R5, R4tln and n are the same as those in formula (I)) or a salt thereof is expressed by the formula (X is a halogen atom, Preferably, it represents a chlorine or bromine atom. Typical examples of compounds represented by the formula (Xun) or their salts are N, N, N'
, N'-Tetramethylhexamethylenediamine, tetramethylethylenediamine, tetramethylpropylenediamine, pentamethyldiethylenetriamine, hexamethyltriethylenetetraamine, tetraethylhexamethylenecyaquine, tetraethyldiethylenetriamine, dimethylhexamethylenediamine, dimethylpropylene Examples include diamine, diethylhexamethylene diamine, diphenylhexamethylene diamine, dicyclohexylhexamethylene diamine, dimethyldioctylhexamethylene cyanide, and their hydrogen halide salts.

The dyeability improver of the present invention is reacted with a cellulose base material in the presence of an alkali, whereby the ring is closed by the alkali, and the ring-closed compound reacts with the hydroxyl group of the cellulose base material to form a chemically stable bond. The base material is cationized.

Next, when an anionic dye is added to the system, the dye is more easily adsorbed to the cellulose substrate due to electrostatic attraction, and dyeing can be carried out at a relatively low temperature and in a short time.

The amount of the compound represented by the general formula (RI) applied to the cellulose substrate varies depending on the desired degree of cationization, but
A range of 200 to 200% by weight is common. The alkali necessary for ring-closing a compound represented by the general formula (
The amount is 0.5 to 50 times the amount of the compound in 1). They are placed in a bath and treated at 40 to 100°C for 5 to 60 minutes to cationize the cellulose base material. After thoroughly washing with water, the cationized cellulose base material is placed in a solution of anionic dye such as direct dye, acid dye, fluorescent dye, etc. and dyed at 10 to 100%.
Dyeing is completed by stirring for 5 to 30 minutes at °C. The dyeing method using the dyeability improver of the present invention is characterized by a small amount of unadsorbed dye, and the dyeability, dyeing operation and economical efficiency are significantly improved. However, when a reactive dye is used, the alkaline agent necessary for ring-closing the compound represented by general formula (I) is not required.

Examples include cellulose-based paper, bulbs, cellophane seeds, plants, wood, and wood assembled products that are treated with the dyeability improver of the present invention, but specifically, newspapers, medium-quality paper, etc. , Saragami.

High-quality paper, paperboard, wrapping paper, pure white roll paper, kraft paper, tissue paper, Japanese paper, etc. (or more), mechanical pulp, semi-chemical pulp, chemical pulp, kraft pulp,
Waste paper pulp, non-wood pulp (for example, dust fiber pulp, leaf fiber pulp, grass pulp, seed hair fiber pulp, etc.), etc. (pulp), softwood wood, hardwood wood (wood), etc. Kozo, Mitsumata, Gambi, Ama, Taima,
Kenaf, choma, jute, sunhemp, cotton, bamboo, rice straw, wheat straw, sugar kihi, bagasse reed, Manila hemp, sisal.

There are plants such as esparto (C or higher).

In implementing the present invention, as long as the effects of the present invention are not impaired,
Other additives can be added to the pulp slurry and the like.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 To a chemical pulp slurry with a pulp concentration of 5%, 5 t of a cationizing agent (based on cellulose) and 16 times the amount of sodium hydroxide (
Add a predetermined amount of anti-cationization agent), pulp concentration 1%, 70
Stirred at ℃ for 40 minutes. After that, after thorough washing with water and dehydration, a cationized chemical pulp slurry with a pulp concentration of 20% was added to a direct dye of 0.1% (Nippon Kayaku Co., Ltd. 5upraB).
The mixture was placed in a water bath and stirred at 60°C for 10 minutes. After thorough washing and dehydration, water was added to dilute the pulp to a pulp concentration of 1%, and a valve seat was prepared using a Büchner funnel. As a cationizing agent, a compound having the chemical structure of formula (2) was used as a control, and a compound having the chemical structure of formula (b) was used as the product of the present invention.

Table 1 shows the evaluation results of the dyeability of the obtained valve seat. The dyeability was evaluated by measuring a and b using a colorimetric color difference needle.

Table 1 From Table 1, it is clear that pretreatment with the compound (b) of the present invention can significantly improve the dyeability of pulp.

Example 2 Cation upper side 5 was added to the deinked pulp slurry with a pulp concentration of 7%.
(for cellulose), 10 times the amount of sodium hydroxide (anti-cationizing agent) was added to the specified lid, and the pulp concentration was 1.5%.
The mixture was stirred at 60°C for 20 minutes.

Thereafter, after thorough washing and dehydration, a cationized deinked pulp slurry with a pulp density of 15 parts was placed in a direct dye bath of 0.08 parts (5 upra RθdBWEI manufactured by Nippon Kayaku Co., Ltd.).
Stirring was performed at 0°C for 10 minutes. After sufficient water washing and dehydration, water was added to prepare a pulp density 1 K dilution L Tappi milli-luminescent sheet machined sheet. As a cationizing agent, a compound having the chemical structure of formula (2) above was used as a control, and a compound having the chemical structure of formula (b) was used as the product of the present invention.

Table 2 shows the evaluation results of the dyeability of the obtained valve seat.

Table 2 From Table 2, it was found that the dyeability of the pulp pretreated with the compound (b) of the present invention was significantly improved.

Example 3 Chemical pulp slurry with a pulp concentration of 5%, 1% cationizing agent (based on cellulose), and 10 times more sodium hydroxide! (
Add a predetermined amount of anti-cationization agent), pulp concentration 1.0%,
The mixture was stirred at 60°C for 10 minutes. After that, after thorough water washing and dehydration, 0.08% direct dye (Nippon Kayaku Co., Ltd. 5
The mixture was placed in an upraBlue BOL bath and stirred at 60°C for 15 minutes. After thorough washing and dehydration, water was added to dilute the pulp to a pulp concentration of 1 part, and a valve seat was prepared using a Büchner funnel. As a control, a compound represented by the chemical structure of formula (■) was used as a cationizing agent, and as a product of the present invention, a compound represented by the chemical structure of formula (■) was used.
(2) A compound having the chemical structure was used.

Table 3 shows the evaluation results of the dyeability of the obtained valve seat.

Table 3 Table 3 shows that the dyeability of the pulp pretreated with the compound (■) of the present invention was significantly improved.

Applicant's agent Kaoru Furutani

Claims (1)

[Scope of Claims] 1 General formula (T) (In formula (■), R1, R2, R, and R9 are each hydrogen. An alkyl group having 1 to 1 B carbon atoms, a cycloalkyl group, an aryl group, or a 7 carbon atom group) -18 aralkyl group, n is an integer of 2 or more, m is an integer of 1 or more, each is hydrogen except when A1 and A2 are both hydrogen -0H
2°HOH,, X■ (X Fo octahegen atom) or -〇H2°H,. R2 is present, and Y is an acid residue. ) A dyeability improver for cellulose-based materials consisting of a compound represented by: 2 Cellulose base material is paper, bulb, cellophane. The dyeability improver according to claim 1, which is a seed, a plant, a wood, or a wood assembly product.