Cationic type formaldehyde-free color fixing agent for reactive dye and preparation method thereof

Abstract

The invention relates to the technical field of color fixing agents, and provides a cationic type formaldehyde-free color fixing agent for reactive dye, wherein through the cationic type formaldehyde-free color fixing agent, the wet rubbing fastness and washing color fastness of textiles can be better improved. The cationic type formaldehyde-free color fixing agent for the reactive dye is prepared from, by mass, 50-60 parts of dimethyl diallyl ammonium chloride, 0.2-10 parts of monomers containing tertiary amino groups, 0.1-5 parts of cross-linking agents, 0.01-0.3 part of initiating agents and 30-48 parts of deionized water, wherein an aqueous solution with the mass percentage concentration of 60+ / -0.5% or 65+ / -0.5% is adopted as the dimethyl diallyl ammonium chloride. Meanwhile, the invention further provides a preparation method of the cationic type formaldehyde-free color fixing agent for the reactive dye.

Description

technical field

[0001] The invention relates to the technical field of color-fixing agents, in particular to a preparation method of a cationic formaldehyde-free color-fixing agent for reactive dyes. Background technique

[0002] At present, fabric dyeing is mainly dyed with reactive dyes, but in the process of printing and dyeing, the bonding reaction and hydrolysis reaction of reactive dyes and cellulose fibers exist at the same time, and the existence of hydrolysis reaction leads to relatively low color fixation rate of reactive dyes Moreover, the molecular structure of reactive dyes contains hydrophilic groups such as sulfonic acid groups and carboxylic acid groups. When dyeing, the amount of dye that is fixed due to the high concentration often occurs, resulting in unqualified dyeing and wet rubbing of dyed fabrics. In particular, the wet rubbing fastness of medium and dark-colored fabrics is low, so the fabric must be fixed with a color-fixing agent after dyeing. [0...

Examples

Embodiment 1

[0032] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0033] Dimethyl diallyl ammonium chloride: 508 kg

[0034] Dimethylaminoethyl acrylate: 13 kg

[0035] Diallylamine: 8kg

[0036] Ammonium persulfate: 0.2 kg

[0037] Deionized water: 470.8 kg;

[0038] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 60% by mass.

[0039] Its preparation method comprises the following steps:

[0040] (1) Add 508 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0041] (2) When the temperature rises to 68°C, add it dropwise from two high-level tanks at the same time. The first high-level tank is 13 kg of dimethylaminoethyl acrylate, and the second high-level tank is dripped with 4 kg of dimethylaminoethyl acrylate with a mass percentage concentration of 5%. Ammonium persulfate solution, this ammonium persulfate solu...

Embodiment 2

[0044] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0045] Dimethyl diallyl ammonium chloride: 512 kg

[0046] Dimethylaminopropyl acrylate: 20 kg

[0047] Triallylamine: 6 kg

[0048] Sodium persulfate: 1.5 kg

[0049] Deionized water: 460.5 kg;

[0050] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 65% by mass.

[0051] Its preparation method comprises the following steps:

[0052] (1) Add 512 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0053] (2) When the temperature rises to 75°C, add it dropwise from two high-level tanks at the same time. The first high-level tank is 20 kg of dimethylaminopropyl acrylate, and the second high-level tank is dripped with 20 kg of dimethylaminopropyl acrylate with a mass percentage concentration of 7.5%. Sodium persulfate solution, this sodium persulfate so...

Embodiment 3

[0056] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0057] Dimethyldiallyl ammonium chloride: 525 kg

[0058] Diethylaminopropyl acrylate: 25 kg

[0059] N-methyldiallylamine: 25 kg

[0060] Potassium persulfate: 1.8 kg

[0061] Deionized water: 423.2 kg;

[0062] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 60% by mass.

[0063] Its preparation method comprises the following steps:

[0064] (1) Add 525 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0065](2) When the temperature rises to 80°C, add dropwise from two high-level tanks at the same time. The first high-level tank is 25 kg of diethylaminopropyl acrylate, and the second high-level tank is dripped with 25 kg of diethylaminopropyl acrylate with a mass percentage concentration of 7.2%. Potassium persulfate solution, this potassium pers...

technical field

[0001] The invention relates to the technical field of color-fixing agents, in particular to a preparation method of a cationic formaldehyde-free color-fixing agent for reactive dyes. Background technique

[0002] At present, fabric dyeing is mainly dyed with reactive dyes, but in the process of printing and dyeing, the bonding reaction and hydrolysis reaction of reactive dyes and cellulose fibers exist at the same time, and the existence of hydrolysis reaction leads to relatively low color fixation rate of reactive dyes Moreover, the molecular structure of reactive dyes contains hydrophilic groups such as sulfonic acid groups and carboxylic acid groups. When dyeing, the amount of dye that is fixed due to the high concentration often occurs, resulting in unqualified dyeing and wet rubbing of dyed fabrics. In particular, the wet rubbing fastness of medium and dark-colored fabrics is low, so the fabric must be fixed with a color-fixing agent after dyeing. [0...

Examples

Embodiment 1

[0032] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0033] Dimethyl diallyl ammonium chloride: 508 kg

[0034] Dimethylaminoethyl acrylate: 13 kg

[0035] Diallylamine: 8kg

[0036] Ammonium persulfate: 0.2 kg

[0037] Deionized water: 470.8 kg;

[0038] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 60% by mass.

[0039] Its preparation method comprises the following steps:

[0040] (1) Add 508 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0041] (2) When the temperature rises to 68°C, add it dropwise from two high-level tanks at the same time. The first high-level tank is 13 kg of dimethylaminoethyl acrylate, and the second high-level tank is dripped with 4 kg of dimethylaminoethyl acrylate with a mass percentage concentration of 5%. Ammonium persulfate solution, this ammonium persulfate solu...

Embodiment 2

[0044] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0045] Dimethyl diallyl ammonium chloride: 512 kg

[0046] Dimethylaminopropyl acrylate: 20 kg

[0047] Triallylamine: 6 kg

[0048] Sodium persulfate: 1.5 kg

[0049] Deionized water: 460.5 kg;

[0050] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 65% by mass.

[0051] Its preparation method comprises the following steps:

[0052] (1) Add 512 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0053] (2) When the temperature rises to 75°C, add it dropwise from two high-level tanks at the same time. The first high-level tank is 20 kg of dimethylaminopropyl acrylate, and the second high-level tank is dripped with 20 kg of dimethylaminopropyl acrylate with a mass percentage concentration of 7.5%. Sodium persulfate solution, this sodium persulfate so...

Embodiment 3

[0056] A cationic formaldehyde-free color-fixing agent for reactive dyes, made of the following raw material components in parts by mass:

[0057] Dimethyldiallyl ammonium chloride: 525 kg

[0058] Diethylaminopropyl acrylate: 25 kg

[0059] N-methyldiallylamine: 25 kg

[0060] Potassium persulfate: 1.8 kg

[0061] Deionized water: 423.2 kg;

[0062] Wherein, dimethyl diallyl ammonium chloride is an aqueous solution with a concentration of 60% by mass.

[0063] Its preparation method comprises the following steps:

[0064] (1) Add 525 kg of dimethyl diallyl ammonium chloride to the reactor, start stirring, and start heating;

[0065](2) When the temperature rises to 80°C, add dropwise from two high-level tanks at the same time. The first high-level tank is 25 kg of diethylaminopropyl acrylate, and the second high-level tank is dripped with 25 kg of diethylaminopropyl acrylate with a mass percentage concentration of 7.2%. Potassium persulfate solution, this potassium pers...

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