Preparation method of water-based dyeing auxiliary agent for synthetic leather

A technology for dyeing auxiliaries and synthetic leather, applied in the field of dyeing, can solve problems such as poor dyeing performance of oily polyurethane resin, and achieve the effects of reducing usage, reducing sealing cost and improving purity

Inactive Publication Date: 2020-10-20
程晓光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that the dyeing performance of oily polyurethane resin is relatively poor

Method used

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  • Preparation method of water-based dyeing auxiliary agent for synthetic leather
  • Preparation method of water-based dyeing auxiliary agent for synthetic leather
  • Preparation method of water-based dyeing auxiliary agent for synthetic leather

Examples

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preparation example Construction

[0028] Such as Figure 1 to Figure 6 Shown, the preparation method of a kind of synthetic leather aqueous dyeing auxiliaries of the present invention comprises the following steps:

[0029] S1. Preparatory work: clean the reactor and pass hot air into it to keep the inside of the reactor dry, then feed nitrogen into the reactor and circulate continuously so that the environment of high-purity dry nitrogen is maintained in the reactor;

[0030] S2. Add deionized water, acrylic acid, glacial acetic acid, dye accelerator, dispersant, isooctyl methacrylate and isobornyl methacrylate into the reactor in sequence according to the predetermined dosage through the hopper, and then carry out the reaction on the reactor Slowly heat to 70-90°C with a heating rate of 2°C / min; then forcefully stir the mixture for 20-30min;

[0031] S3. Fill the mixed solution stirred in S2 into high-temperature air for aeration, then add a pH regulator after cooling to room temperature and detect the pH o...

Embodiment approach

[0034] As an embodiment of the present invention, a sleeve 22 is fixedly connected to the corresponding position of the feed pipe 16 in the body 1, the sleeve 22 runs through the body 1, and the feed pipe 16 is sleeved inside the sleeve 22 and connected to the sleeve 22. Sliding connection; a spring is sleeved on the feed pipe 16 between the top of the sleeve 22 and the feed hopper 17; a group of No. 2 holes 23 are provided on the sleeve 22 corresponding to the No. 1 hole 2, and the feeding After the pipe 16 slides down, the No. 1 hole 2 is disconnected from the No. 2 hole 23; the side of the feed hopper 17 is fixedly connected to the position corresponding to the vent hole 15 with a sealing plate 24, and the sealing plate 24 is used to close the vent hole after falling. 15. After the feed pipe 16 slides down, the nitrogen in the body 1 is discharged through the feed pipe 16, further improving the purity of the nitrogen in the body 1; when the feed hopper 17 is filled with the ...

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Abstract

The invention belongs to the technical field of dyeing, and particularly relates to a preparation method of a water-based dyeing auxiliary agent for synthetic leather. A reaction kettle used in the method comprises a body, wherein the body is of a cylindrical structure and is vertically and conically arranged; the bottom of the body is communicated with a discharge pipe, and a stop valve is arranged on the discharge pipe; a motor is arranged at the top of the body and connected with a power supply through a controller; the output shaft of the motor penetrates through the body and extends intothe body, the output shaft of the motor is fixedly connected with a rotating shaft, and a group of stirring rods are uniformly distributed on the rotating shaft; an exhaust hole is formed in the top of the body, a feeding pipe is arranged on the body on one side of the exhaust hole and penetrates through the body, and a feeding hopper is arranged at the top of the feeding pipe; and a gas inlet pipe is arranged in the middle of the body and communicated with nitrogen through a pipeline. Nitrogen is introduced into the middle to be matched with the exhaust hole, so that the nitrogen replacementefficiency is improved, and the purity of nitrogen in the body is further improved.

Description

technical field [0001] The invention belongs to the technical field of dyeing, in particular to a preparation method of a water-based dyeing auxiliary for synthetic leather. Background technique [0002] my country is a big producer of leather industry in the world, with an annual output value growth rate of more than 7%. However, in recent years, the leather industry market has shrunk. The country's environmental protection requirements have become more and more stringent, and the leather market in Hebei has shrunk seriously. Therefore, microfiber synthetic leather gradually replaces genuine leather due to its excellent wear resistance, good tear strength, and air and moisture permeability close to that of genuine leather. However, the microfiber synthetic leather base cloth currently on the market is still made of oily polyurethane resin as the base resin. It is well known that the dyeing performance of oily polyurethane resin is relatively poor. Therefore, it is imperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/18D06P1/52B01J19/00B01J19/14B01J19/18
CPCB01J19/0053B01J19/0066B01J19/0073B01J19/14B01J19/18C08F220/06C08F220/18C08F220/1808D06P1/5257
Inventor 程晓光井方豪
Owner 程晓光
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