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Waterborne leveling agent for dyeing ultrafine fiber PU synthetic leather

A technology of superfine fiber and synthetic leather, applied in the field of synthetic leather dyeing, can solve the problems of uneven dyeing of leather and inconspicuous difference, achieve excellent solubilization and dispersibility, reduce color difference, and promote uniform adhesion

Inactive Publication Date: 2018-03-27
马多浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commercially available leather leveling agents have mostly the same composition as those for cotton, wool and silk, and the difference is not obvious, but the properties of leather such as density, thickness, and fiber structure are significantly different from those of cotton, wool and silk. , so the use of existing leather leveling agents will still cause uneven dyeing of leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of water-based levelling agent:

[0027] (1) Add deionized water dropwise to 10g sodium polyacrylate under stirring until it is completely dissolved, then add 5wt% dilute sulfuric acid dropwise to the obtained sodium polyacrylate aqueous solution to adjust the pH value of the solution to 4-4.5, continue stirring and every 5 minutes Measure the pH value once, when the pH value of the solution is higher than 4.5, add 5wt% dilute sulfuric acid until the pH value of the solution stabilizes at 4-4.5 within 30 minutes, then add 35g polyethylene glycol monomethyl ether, heat to reflux state and keep warm After stirring for 3 hours, the resulting mixed liquid is sent to a spray dryer, and the dried particles are made into fine powder by an ultrafine pulverizer to obtain a polymer ester compound;

[0028] (2) Heat the prepared polymer ester at a heating rate of 5°C / min to 115-120°C and keep stirring for 5 minutes, then add 3g N-hydroxyethyl acrylamide and 1g trimethylolam...

Embodiment 2

[0032] Preparation of water-based levelling agent:

[0033] (1) Add deionized water dropwise to 15g sodium polyacrylate under stirring until it is completely dissolved, then add 5wt% dilute sulfuric acid dropwise to the obtained sodium polyacrylate aqueous solution to adjust the pH of the solution to 4-4.5, continue stirring and every 5 minutes Measure the pH value once, when the pH value of the solution is higher than 4.5, add 5wt% dilute sulfuric acid until the pH value of the solution stabilizes at 4-4.5 within 30 minutes, then add 35g polyethylene glycol monomethyl ether, heat to reflux state and keep warm Stir for 4 hours, send the resulting mixed solution to a spray dryer, and dry the resulting particles into a fine powder through an ultrafine pulverizer to obtain a polymer ester compound;

[0034] (2) Heat the prepared polymer ester at a heating rate of 5°C / min to 115-120°C and keep stirring for 5 minutes, then add 3g N-hydroxyethyl acrylamide and 2g trimethylolaminomethane,...

Embodiment 3

[0038] Preparation of water-based levelling agent:

[0039] (1) Add deionized water dropwise to 10g sodium polyacrylate under stirring until it is completely dissolved, then add 5wt% dilute sulfuric acid dropwise to the obtained sodium polyacrylate aqueous solution to adjust the pH of the solution to 4-4.5, continue stirring and every 5 minutes Measure the pH value once, when the pH value of the solution is higher than 4.5, add 5wt% dilute sulfuric acid until the pH value of the solution is stable at 4-4.5 within 30 minutes, then add 35g polyethylene glycol monomethyl ether, heat to reflux state and keep warm After stirring for 3 hours, the resulting mixed liquid is sent to a spray dryer, and the dried particles are made into fine powder by an ultrafine pulverizer to obtain a polymer ester compound;

[0040] (2) Heat the prepared polymer ester at a heating rate of 5°C / min to 115-120°C and keep stirring for 5 minutes, then add 3g N-hydroxyethyl acrylamide and 1g trimethylolaminometh...

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PUM

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Abstract

The invention discloses a waterborne leveling agent for dyeing ultrafine fiber PU synthetic leather, which relates to the technical field of synthetic leather. The waterborne leveling agent is prepared from the following raw materials in parts by weight: 25 to 35 parts of methoxy polyethylene glycol, 10 to 15 parts of sodium polyacrylate, 1 to 5 parts of hydrogenated ricinoleic acid, 1 to 5 partsof gamma-polyglutamic acid, 1 to 5 parts of N-hydroxyethyl acrylamide, 0.5 to 3 parts of 2-Amino-2-(hydroxymethyl)-1,3-propanediol, 0.5 to 3 parts of povidoneK30, 0.05 to 0.5 part of vinyl trimethoxysilane, and 0.05 to 0.5 part of titanate coupling agent TMC-WT. The leveling agent of the invention belongs to the waterborne leveling agent; and by adopting the waterborne leveling agent, the staining rate of the dye on the synthetic leather can be significantly increased, the color difference can be reduced, the uniformity in dyeing the synthetic leather can be realized, a K / S value at 460nm isgreater than 4, and a DEcmc value is smaller than 0.3.

Description

Technical field: [0001] The invention relates to the technical field of synthetic leather dyeing, in particular to a water-based levelling agent for dyeing superfine fiber PU synthetic leather. Background technique: [0002] Synthetic leather, a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. At present, synthetic leather mainly includes PU synthetic leather and PVC synthetic leather. PVC synthetic leather is a leather made of various fabrics as a substrate, combined with a PVC foam layer and then processed on the surface. It has a texture similar to a leather surface and a different surface touch. It is easy to post-process, but the disadvantage is that it is easy to become hard and change. brittle. PU synthetic leather, that is, polyurethane synthetic leather, uses non-woven fabric or woven fabric as the substrate, and weaves high-quality products through multiple treatments. The physical structure is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P1/651D06P1/653D06P3/24C08G81/02
CPCC08G81/025D06P1/5242D06P1/5264D06P1/5278D06P1/65106D06P1/65125D06P1/6533D06P3/24
Inventor 马多浩
Owner 马多浩
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