Disperse Dye Color Paste for Waterless Dyeing, and Preparation Method and Application Thereof

Abstract

The invention provides a disperse dye color paste for waterless dyeing, which comprises, by weight, 10%-40% of disperse dye filter cakes, 2%-35% of a dispersant, 5%-20% of a dyeing auxiliary, 0.1-0.5% of a surfactant, and 20%-88% of a solvent. The disperse dye color paste for waterless dyeing of the invention has a small particle size; and after waterless dyeing, a textile does not contain cleavable carcinogenic aromatic amine azo dyes, allergenic dyes, forbidden aromatic amine or bioactive substances. The disperse dye color paste for waterless dyeing of the invention can be stably stored for 6-12 months which is beneficial to the transportation of dyes and the production management of dyeing factories. Moreover, a dyeing effect featuring a high fixation rate is realized after the disperse dye color paste for waterless dyeing is applied to textiles.

Claims

1. A disperse dye color paste for waterless dyeing, comprising, by weight, based on a total weight of the disperse dye color paste, 10%-40% of a disperse dye filter cakes, 2%-20% of a dispersant, 5%-20% of a dyeing auxiliary, 0.1-2% of a surfactant, and 20%-88% of a solvent.

2. The disperse dye color paste for waterless dyeing according to claim 1, wherein the solvent is one of water, alcohol, alkane, ether, siloxane and sulfolane; the alcohol is one or a mixture of several of ethylene glycol, propylene glycol and diethylene glycol; the alkane is one or a mixture of several of isooctane, paraffin and white oil; and the ether is anisole or phenetole.

3. The disperse dye color paste for waterless dyeing according to claim 1, wherein the dispersant is one or a combination of several of naphthalene sulfonate formaldehyde condensate, alkyl naphthalene sulfonate formaldehyde condensate, benzylnaphthalene sulfonate formaldehyde condensate, lignosulfonate, polycarboxylic acid ester, modified polyurethane and alkyl amine salt polymer.

4. The disperse dye color paste for waterless dyeing according to claim 1, wherein the dyeing auxiliary is one or a combination of more than two of ethanol, glycerol, ethyl acetate and butyrolactone.

5. The disperse dye color paste for waterless dyeing according to claim 1, wherein the surfactant is one or a combination of defoamer and emulsifier.

6. A preparation method of the disperse dye color paste for waterless dyeing according to claim 1, comprising the following steps: mixing disperse dye filter cakes, a dispersant, a dyeing auxiliary, a surfactant and deionized water in proportion, and grinding a mixture with grinding equipment to prepare a liquid disperse dye.

7. The preparation method according to claim 6, wherein a particle size after grinding is 0.1-1 μm.

8. An application of the disperse dye color paste for waterless dyeing according to claim 1 to dyeing of a textile.

9. The application of the disperse dye color paste for waterless dyeing according to claim 8, wherein the textile is hydrophobic fiber and hydrophobic fiber blend fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0022] The invention will be further described below with reference to specific embodiments.

Embodiment 1

[0023] 200 g of Disperse Red 167, 40 g of polycarboxylic acid ester, 4 g of a defoamer and 756 g of deionized water were mixed, pre-dispersed and then added into a sand mill to be ground to obtain a Disperse Red 167 disperse dye color paste. The particle size ranged from 0.1 μm to 1 μm after grinding.

Embodiment 2

[0024] 200 g of Disperse Red 167, 40 g of alkylamine salt, 200 g of ethyl acetate, 4 g of a defoamer and 556 g of deionized water were mixed, pre-dispersed and then added into a sand mill to be ground to obtain a Disperse Red 167 disperse dye color paste. The particle size ranged from 0.1 μm to 1 μm after grinding.

Comparative Example 1

[0025] 200 g of Disperse Red 167, 40 g of peregal 0, 4 g of a defoamer and 756 g of water were mixed, pre-dispersed and then added into a sand mill to be ground to obtain a Disperse Red 167 disperse dye color paste.

Comparative Example 2

[0026] 200 g of Disperse Red 167, 40 g of CNF, 4 g of a defoamer and 756 g of water were mixed, pre-dispersed and then added into a sand mill to be ground to obtain a Disperse Red 167 disperse dye color paste.

[0027] A performance test was conducted on the disperse dye color pastes of Embodiments 1-2 and Comparative examples 1-2. Specifically, the dye sediment condition of Embodiments 1-2 and Comparative examples 1-2 was observed, and sedimentation time was compared.

[0028] The dyes of Embodiments 1-2, the dyes of Comparative examples 1-2 and a powder dye with the same composition were used to dye textiles based on a weight proportion of 1:100 using a waterless dyeing method. The textiles used in Embodiments 1-2 and Comparative examples 1-2 were made of hydrophobic fiber, specifically polyester fiber.

[0029] According to GB/T 8424-1987 “Textiles—Method for the measurement of color and color differences”, the difference between inner and outer layers of dyed textiles (represented by E, the greater the value, the greater the difference) and the presence of dye accumulation in textiles were determined. See Table 1 for specific data.

TABLE-US-00001 Table 1 Difference Dye between inner and. accumulation Sedimentation time outer layers inside Embodiment 1 6 months 1-3 No Embodiment 2 6 months 0.2-0.8 No Comparative within 1 month Above 4 Yes example 1 Comparative Within 2 month Above 4 Yes example 2 Powder dye / Above 4 Yes

[0030] In Embodiments 3-10, disperse dye color paste for waterless dyeing were prepared according to the composition formulas in Table 2, and a dye, a dispersant, a dyeing auxiliary and a surfactant were pre-dispersed in a solvent and ground to obtain the disperse dye color paste for waterless dyeing. The particle size ranged from 0.1 μm to 1 μm after grinding.

TABLE-US-00002 TABLE 2 Embod- Type of Amount Dyeing iment dye of dye Dispersant auxiliary Surfactant Solvent 3 Red 167 150 g 30 g 150 g 3 g 667 g 4 Orange 30 150 g 30 g 150 g 3 g 667 g 5 Orange 30 200 g 40 g 200 g 4 g 556 g 6 Blue 79 150 g 30 g 150 g 3 g 667 g 7 Blue 79 200 g 40 g 200 g 4 g 556 g 8 Orange 100 g 20 g 200 g 20 g  660 g 30, Blue 79 9 Red 167, 300 g 200 g   50 g 1 g 449 g Orange 30 10 Red 167, 400 g 150 g  100 g 10 g  340 g Blue 79

[0031] In Embodiment 3, the solvent used was water, the dispersant was naphthalene sulfonate formaldehyde condensate, the dyeing auxiliary was ethanol, and the surfactant was a defoamer.

[0032] In Embodiment 4, the solvent used was alcohol, specifically ethylene glycol, the dispersant was alkyl naphthalene sulfonate formaldehyde condensate, the dyeing auxiliary was glycerol, and the surfactant was a mixture of a defoamer and an emulsifier based on a ratio of 1:1.

[0033] In Embodiment 5, the solvent used was alcohol, specifically propylene glycol and diethylene glycol, which were mixed according to a weight ratio of 1: 3, the dispersant was prepared by mixing alkyl naphthalene sulfonate formaldehyde condensate and benzylnaphthalene sulfonate formaldehyde condensate according to a weight ratio of 1:2, the dyeing auxiliary was ethyl acetate, and the surfactant was an emulsifier.

[0034] In Embodiment 6, the solvent used was alkane, specifically isooctane, the dispersant was prepared by mixing lignosulfonate, polycarboxylic acid ester and modified polyurethane according to a weight ratio of 1:1:1, the dyeing auxiliary was prepared by mixing ethyl acetate and butyrolactone according to a weight ratio of 1:2, and the surfactant was a defoamer.

[0035] In Embodiment 7, the solvent used was alkane, specifically paraffin and white oil, which were mixed according to a weight ratio of 1:2, the dispersant was prepared by mixing modified polyurethane and alkyl amine salt according to a weight ratio of 1:1, the dyeing auxiliary was butyrolactone, and the surfactant was prepared by mixing a defoamer and an emulsifier according to a weight ratio of 1:2.

[0036] In Embodiment 8, the solvent used was ether, which may be anisole or phenethyl ether, specifically anisole, the dispersant was prepared by mixing naphthalene sulfonate formaldehyde condensate, lignosulfonate and polycarboxylic acid ester according to a weight ratio of 1:2:2, the dyeing auxiliary was prepared by mixing ethanol, glycerol and ethyl acetate according to a weight ratio of 1:1:2, and the surfactant was a defoamer.

[0037] In Embodiment 9, the solvent used was sulfolane, the dispersant was prepared by mixing polycarboxylic acid ester and modified polyurethane according to a weight ratio of 1:1, the dyeing auxiliary was prepared by mixing glycerol, ethyl acetate and butyrolactone according to a weight ratio of 1:1:1, and the surfactant was a defoamer.

[0038] In Embodiment 10, the solvent used was siloxane, the dispersant was benzylnaphthalene sulfonate formaldehyde condensate, the dyeing auxiliary was ethyl acetate, and the surfactant was an emulsifier.

[0039] Embodiments 3-10 were used to dye textiles based on a weight proportion of 1:100 using a waterless dyeing method. The textiles used in Embodiments 3 and 4 were made of hydrophobic fiber, specifically nylon. The texnylontiles used in Embodiments 5 and 6 were made of polyester and nylon blended yarn. The textiles used in Embodiments 7 and 8 were made of polyester and cotton fiber blended yarn. The textiles used in Embodiments 9 and 10 were made of core-spun yarn, which used polyester and cotton blended yard as a coating layer and T400 filaments as core yard.

[0040] The performance of the disperse dye color pastes of Embodiments 3-10 was tested by the same method as Embodiments 1-2, and the specific data are shown in Table 3.

TABLE-US-00003 Table 3 Difference Sedimentation between inner and Dye accumulation Embodiment time outer layers inside Embodiment 3 6 months 0.2-0.8 No Embodiment 4 6 months 0.1-0.8 No Embodiment 5 6 months 0.1-0.8 No Embodiment 6 6 months 0.2-0.8 No Embodiment 7 6 months 0.2-0.8 No Embodiment 8 6 months 0.1-0.8 No Embodiment 9 6 months 0.1-0.8 No Embodiment 10 6 months 0.1-0.8 No

[0041] As can be seen from Table 1, compared with traditional liquid dyes, the disperse dye color paste obtained by using the formula and manufacturing process of the invention takes much longer time to produce sediment, which greatly facilitates the storage and transportation of dyes. In addition, the dye obtained by using the formula and manufacturing process of the invention has a better level dyeing property in the waterless dyeing process.

[0042] As can be seen from Table 3, the formula and manufacturing process of the invention are suitable for disperse dye color pastes in different colors, and can meet the requirements for different colors in the production process.

[0043] The preferred embodiments of the invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and changes according to the concept of the invention without creative labor. Therefore, all technical schemes that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the invention should be within the scope of protection determined by the claims.