阅读说明：本技术 一种混合染料及利用其超临界co2无水黑色拼染的方法 (Mixed dye and supercritical CO using same2Anhydrous black split dyeing method ) 是由 郑环达 郑来久 景显东 张月 刘国华 于 2020-06-12 设计创作，主要内容包括：本发明涉及一种混合染料及利用其超临界CO<Sub>2</Sub>无水黑色拼染的方法,属于拼染技术领域。本发明所述混合染料为分散红54、分散蓝79和分散红167中的至少两种。本发明首次在超临界CO<Sub>2</Sub>流体中采用分散红54和分散蓝79两种染料、分散红54、分散蓝79和分散红167三种染料一浴实现黑色拼色,具有工艺简单、提升力高的清洁环保优势。(The invention relates to a mixed dye and supercritical CO using the same 2 An anhydrous black split dyeing method belongs to the technical field of split dyeing. The mixed dye of the invention is at least two of disperse red 54, disperse blue 79 and disperse red 167. The invention is firstly in supercritical CO 2 The fluid adopts two dyes of disperse red 54 and disperse blue 79 and three dyes of disperse red 54, disperse blue 79 and disperse red 167 to realize black color matching in one bath, and the liquid has the advantages of simple process, high lifting force, cleanness and environmental protection.)

1. For supercritical CO₂The mixed dye for the anhydrous black split dyeing is characterized in that: the mixed dye is at least two of disperse red 54, disperse blue 79 and disperse red 167.

2. The method of claim 1 for supercritical CO₂The mixed dye for the anhydrous black split dyeing is characterized in that: the mixed dye is a mixture of disperse red 54 and disperse blue 79.

3. The method of claim 2 for supercritical CO₂The mixed dye for the anhydrous black split dyeing is characterized in that: the weight ratio of the disperse red 54 to the disperse blue 79 is 1: 1.

4. the method of claim 1 for supercritical CO₂The mixed dye for the anhydrous black split dyeing is characterized in that: the mixed dye is a mixture of disperse red 54, disperse blue 79 and disperse red 167.

5. The method of claim 4 for supercritical CO₂The mixed dye for the anhydrous black split dyeing is characterized in that: the weight ratio of the disperse red 54, the disperse blue 79 to the disperse red 167 is 1: 1.25: 0.15.

6. a process for using a mixture as claimed in claim 1, 2, 3, 4 or 5Dye-binding supercritical CO₂The waterless black piece-dyeing method is characterized by comprising the following steps: the method comprises the following steps: by supercritical CO₂The fluid is a dyeing medium, and the mixed dye is adopted to dye the textile to be dyed in one step.

7. The method of claim 6, wherein: the method comprises the following steps: placing 1-6% (o.w.f) of mixed dye in a dye kettle, placing the textile to be dyed in the dye kettle, and dyeing the textile to be dyed for 20-90min at 80-140 ℃ and under 16-28 MPa.

8. The method of claim 6, wherein: the textile to be dyed is made of terylene, super imitation cotton, acrylic fiber, wool or aramid fiber.

9. The method of claim 6, wherein: the type of the textile to be dyed is fiber, cone yarn, hank yarn, fabric, ribbon or shoe material.

Technical Field

The invention relates to a mixed dye and supercritical CO using the same₂An anhydrous black split dyeing method belongs to the technical field of split dyeing.

Background

The disperse dye is a main dye in textile printing and dyeing processing, and black is one of colors which are popular with consumers in a plurality of color systems, and is generally prepared by blending different disperse dye components according to a certain proportion so as to solve the problems of insufficient deep dyeing property, lifting power and color fastness of a single black dye. In general, to obtain good dyeing properties, the disperse dyes used in the blend should have good compatibility and dyeing additivity, i.e. the dyes should have the same or similar dye uptake rates, and the dye uptake rate of the mixed dyes should be substantially equal to the sum of the individual dye uptake rates of the dyes. Meanwhile, in order to easily control the color light, the types of dyes for color matching are as few as possible, so that the one-time success rate and the color repairing efficiency of dyeing production are improved, the dyeing period is shortened, and the production cost is saved.

In recent years, supercritical CO₂The fluid dyeing is continuously advanced from laboratory research to engineering application, and the anhydrous dyeing demonstration of polyester fibers, cone yarns, grey cloth and ready-made clothes is realized. In 2004, s.kawahara et al in japan examined the influence factors of the blending of disperse dyes on the color-matching light, and the experimental results showed that the dyed samples exhibited purple colors of different colors, which were mainly influenced by the experimental time, temperature and pressure. In 2008, Zhejiang industrial university Linchunfan et al applied for supercritical CO₂The mediated color matching dyeing method obtains red purple, blue purple, orange red, orange yellow, blue green and yellow green through multi-bath color matching. But the supercritical CO₂The color matching technology of the fluid multi-bath method needs to be dyed for multiple times of dyeing and over 2 timesThe required color is obtained, the process is complex, the color matching time is too long, and the supercritical CO is not favorable₂The industrial popularization and application of the fluid technology. Research to date, supercritical CO for disperse dyes₂The research on one-bath color matching and dyeing has less reports, particularly supercritical CO₂The fluid is dyed black, and no public report is found at present.

Disclosure of Invention

The present invention solves the above problems by the combination of different disperse dyes.

The invention provides a method for supercritical CO₂The dye mixture for the anhydrous black split dyeing comprises at least two of disperse red 54, disperse blue 79 and disperse red 167.

The invention preferably selects the mixed dye as the mixture of disperse red 54 and disperse blue 79.

The invention preferably has the weight ratio of the disperse red 54 to the disperse blue 79 of 1: 1.

the invention preferably selects the mixed dye as the mixture of disperse red 54, disperse blue 79 and disperse red 167.

The invention preferably selects the weight ratio of the disperse red 54, the disperse blue 79 and the disperse red 167 as 1: 1.25: 0.15.

the invention also aims to provide supercritical CO utilizing the mixed dye₂An anhydrous black piece-dyeing method, which comprises the following steps: by supercritical CO₂The fluid is a dyeing medium, and the mixed dye is adopted to dye the textile to be dyed in one step.

The invention preferably adopts the following method: placing 1-6% (o.w.f) of mixed dye in a dye kettle, placing the textile to be dyed in the dye kettle, and dyeing the textile to be dyed for 20-90min at 80-140 ℃ and under 16-28 MPa.

The invention preferably selects the material of the textile to be dyed as terylene, super imitation cotton, acrylon, wool or aramid fiber.

The invention preferably provides that the type of textile to be dyed is a fiber, a cone, a hank, a fabric, a braid or a shoe material.

The invention has the beneficial effects that:

the inventionFirst in supercritical CO₂The fluid adopts two dyes of disperse red 54 and disperse blue 79 and three dyes of disperse red 54, disperse blue 79 and disperse red 167 to realize black color matching in one bath, and the liquid has the advantages of simple process, high lifting force, cleanness and environmental protection.

The black obtained by the invention can meet the requirement of commercial black, and the color fastness to washing of the textile color fastness test is determined according to GB/T3920-: tests prove that the color fastness to washing, dry rubbing and wet rubbing of the dyed textiles is above grade 4-5, and the dyed textiles meet the requirements of national standards.

Detailed Description

The following non-limiting examples are presented to enable those of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.