CN112876877B - Cationic dye composition for acetate fibers and preparation method thereof - Google Patents

Abstract

The invention discloses a cationic dye composition for acetate fibers and a preparation method thereof, wherein the dye composition is prepared from the following raw materials in percentage by mass: 3-10% of a compound A shown in a formula (I), 5-30% of a compound B shown in a formula (II), 12-30% of a compound C shown in a formula (III), 13-28% of a compound D shown in a formula (IV) and the balance of an auxiliary agent; the dye composition and the dye product provided by the embodiment of the invention have the advantages that the compatibility in compounding is obviously improved, the prepared product has bright color and excellent color fastness, sublimation fastness, soaping fastness and rubbing fastness, the dyeing route is greatly shortened, the energy can be saved, the cost is saved, the efficiency is improved, and the sewage discharge is reduced.

Description

Cationic dye composition for acetate fiber and preparation method thereof

Technical Field

The invention relates to the technical field of printing and dyeing, in particular to a cationic dye composition for acetate fiber and a preparation method thereof.

Background

Cationic Dyes (Cationic Dyes) are one type of textile dye, also known as basic Dyes and salt-based Dyes. The cationic dye is soluble in water and ionized in water solution to produce dye with positively charged color ion.

The cationic dye has the highest dyeing percentage on acetate fibers at a pH value of 7, and the dyeing effect is the best because H is H under acidic conditions⁺The dye competes with the cationic dye, and under the alkaline condition, part of the cationic dye is aggregated and even precipitated, so that the dye uptake is reduced. The carbonyl cation and residual hydroxyl on the cellulose acetate fiber have certain negative charges, so the cationic dye has certain staining property, compatibility and leveling property on the cellulose acetate fiber.

Therefore, how to select a cationic dye with good compatibility for compounding and obtain a composite cationic red dye with high fastness by utilizing a compounding and synergism principle is a technical problem which needs to be solved urgently.

Disclosure of Invention

Therefore, the invention provides a cationic dye composition for acetate fiber and a preparation method thereof.

In order to achieve the above purpose, the invention provides the following technical scheme:

the invention provides a cationic dye composition for acetate fibers, which is prepared from the following raw materials in percentage by mass: 3-10% of a compound A shown in a formula (I), 5-30% of a compound B shown in a formula (II), 78-30% of a compound C12 shown in a formula (III), 13-28% of a compound D shown in a formula (IV) and the balance of an auxiliary agent;

in one embodiment of the present invention, the auxiliary agent is one or more of a naphthalenesulfonic acid-formaldehyde condensate, a methylnaphthalenesulfonic acid-formaldehyde condensate, anhydrous sodium sulfate, and glucose.

The invention also provides a method for preparing the cationic dye composition for acetate fibers, which is characterized by comprising the following steps:

and (2) adding the compound A shown in the formula (I), the compound B shown in the formula (II), the compound C shown in the formula (III), the compound D shown in the formula (IV) and an auxiliary agent into a mixer according to the proportion, and fully mixing to obtain the cationic dye composition.

In one embodiment of the invention, the mixing time is 4-6 hours.

In one embodiment of the present invention, the auxiliary agent is one or more of a naphthalenesulfonic acid-formaldehyde condensate, a methylnaphthalenesulfonic acid-formaldehyde condensate, anhydrous sodium sulfate, and glucose.

The invention has the following advantages:

the dye composition and the dye product provided by the embodiment of the invention have the advantages that the compatibility in compounding is obviously improved, the prepared product has bright color and excellent color fastness, sublimation fastness, soaping fastness and rubbing fastness, the dyeing route is greatly shortened, the energy can be saved, the cost is saved, the efficiency is improved, and the sewage discharge is reduced.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the invention, the purple dye component of the compound A shown in the formula (I) can be produced by Shanghai Jia dye industry Co., Ltd, the purple dye component of the compound B shown in the formula (II) can be produced by Shanghai Jia dye industry Co., Ltd, the purple dye component of the compound C shown in the formula (III) can be produced by Shanghai Qing component dye industry Co., Ltd, and the red dye component of the compound D shown in the formula (IV) can be produced by Shanghai Baoshijing chemical plant.

Example 1

After 7g of the compound A represented by the formula (I), 15g of the compound B represented by the formula (II), 20g of the compound C represented by the formula (III), 21g of the compound D represented by the formula (IV) and 37g of glucose serving as a dispersant were pulverized, they were put into a blender and mixed for 4 hours to obtain a cationic red dye composition for acetate fibers. Wherein the content of the first and second substances,

examples 2 to 9

According to the raw material ratio shown in table 1, the compound A shown in the dye formula (I), the compound B shown in the formula (II), the compound C shown in the formula (III), the compound D shown in the formula (IV) and a dispersing agent are crushed by a crusher and then added into a mixer to be mixed for 4-6 hours, so that the cationic red dye composition for acetate fibers in the embodiment of the invention can be obtained.

TABLE 1

The cationic dye composition for acetate fiber dyeing prepared in the example 1-9.

The dye composition compounded in the embodiment is subjected to performance detection, and the detection method comprises the following steps: general conditions for dyeing GB2374 dye, dyeing color light and intensity measuring method of GB2399 cationic dye.

And observing the color light of the cloth sample, and determining the dyeing fastness of the cloth sample by adopting a national standard GB3920-2008 textile rubbing color fastness test method, a GB3921.3-2008 textile color fastness to washing test method and a GB3922-1995 textile color fastness to perspiration test method. The results are shown in Table 2

Comparative example 1

The red cationic dye prepared by the method in example 1 in the patent literature CN201910427768.X is used as a contrast sample for performance detection, and the detection method GB2399 cationic dyeing color light and intensity determination method.

And observing the color light of the cloth sample, and determining the dyeing fastness of the cloth sample by adopting a national standard GB3920-2008 textile rubbing color fastness test method, a GB3921.3-2008 textile color fastness to washing test method and a GB3922-1995 textile color fastness to perspiration test method. The results are shown in Table 2

TABLE 2

Name of the embodiment	Fastness to rubbing	Fastness to washing	Fastness to perspiration	Color light intensity (%)
					Example 1	4-5	4-5	4-5	99.56
Example 2	4-5	4-5	4-5	99.23
					Example 3	4-5	4-5	4-5	99.06
Example 4	4-5	4-5	4-5	98.57
					Example 5	4-5	4-5	4-5	98.62
Example 6	4-5	4-5	4-5	98.21
					Example 7	4-5	4-5	4-5	98.98
Example 8	4-5	4-5	4-5	98.86
					Example 9	4-5	4-5	4-5	99.25
Comparative example 1	3	2-3	3	86.35

The Lab values of the dyed textiles were measured using a Lab value measuring instrument Datacolor, and the results are shown in table 3 below:

TABLE 3

Name of the embodiment	L (brightness)	a (Red/green)	b (yellow/blue)	△E	Dyed fabric
						Example 1	43.46	66.43	-24.59	0.18	Acetate fiber fabric
Example 2	43.51	65.01	-25.86	0.44	Acetate fiber fabric
						Example 3	44.41	67.00	-23.50	0.15	Acetate fiber fabric
Example 4	43.10	65.30	-25.36	0.07	Acetate fiber fabric
						Example 5	41.31	64.32	-30.11	0.21	Acetate fiber fabric
Example 6	43.72	66.30	-26.71	0.20	Acetate fiber fabric
						Example 7	43.75	67.40	-26.07	0.08	Acetate fiber fabric
Example 8	43.66	66.21	-27.90	0.17	Acetate fiber fabric
						Example 9	43.34	63.86	-31.23	0.16	Acetate fiber fabric
Comparative example	49.50	61.79	4.53	1.74	Acetate fiber fabric

As can be seen from Table 2, the cationic dye composition for acetate fiber dyeing of the invention has excellent washing fastness, rubbing fastness, perspiration fastness and other performances, and is bright in color.

As can be seen from Table 3, the cationic dyes used in the acetate fabrics dyed in examples 1 to 9 give fabrics having bright colors and excellent saturation.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (5)

1. A cationic dye composition for acetate fibers, characterized in that,

the dye composition is prepared from the following raw materials in percentage by mass: 3-10% of a compound A shown in a formula (I), 5-30% of a compound B shown in a formula (II), 12-30% of a compound C shown in a formula (III), 13-28% of a compound D shown in a formula (IV) and the balance of an auxiliary agent;

2. the cationic dye composition for acetate fiber according to claim 1 wherein,

the auxiliary agent is one or more than two of naphthalene sulfonic acid formaldehyde condensate, methyl naphthalene sulfonic acid formaldehyde condensate, anhydrous sodium sulfate or glucose.

3. A method of preparing the cationic dye composition for acetate fiber according to claim 1, comprising:

and (3) taking the compound A shown in the formula (I), the compound B shown in the formula (II), the compound C shown in the formula (III), the compound D shown in the formula (IV) and an auxiliary agent according to the proportion, and adding the mixture into a mixer to be fully mixed to obtain the cationic dye composition.

4. The method of claim 3,

the mixing time is 4-6 hours.

5. The method of claim 3,

the auxiliary agent is one or more than two of naphthalene sulfonic acid formaldehyde condensate, methyl naphthalene sulfonic acid formaldehyde condensate, anhydrous sodium sulfate or glucose.