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A kind of water-based polyurethane superfine fiber synthetic leather bass dyeing method

A water-based polyurethane and microfiber technology, applied in the field of superfiber dyeing, can solve the problems of difficult dyeing and cost reduction, and achieve the effects of reduced dyeing cost, excellent product quality and good level dyeing

Active Publication Date: 2021-07-30
LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product has bright color, high efficiency, good dyeing levelness and permeability, and the cost is relatively lower than that of acid dyes. It solves the defects of difficult dyeing and metallic luster when dyed purely by neutral dyes, and the dyeing is dry and rubbed fast. Degree and wet rubbing fastness are above grade 4

Method used

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  • A kind of water-based polyurethane superfine fiber synthetic leather bass dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for dyeing water-based polyurethane superfine fiber synthetic leather bass, using a high-temperature and high-pressure dyeing jigger as dyeing equipment, and adopting bathtub dyeing, specifically comprising the following steps:

[0031] 1) Base cloth treatment: use 3% (0.w.f) anionic surfactant leveling agent and 2g / L sodium chloride to treat the base cloth, the temperature is 25°C, and the treatment time is 10min; the base cloth is water-based polyurethane super Fiber synthetic base cloth;

[0032] 2) Dyeing: Add 3% (0.w.f) dye, heat up to 75°C, keep warm for 10 minutes, make the dye penetrate the base fabric further, continue to heat up to 105°C, keep warm for 25 minutes, make the dye fully colored, and remove the possibility of neutral dye The resulting floating color on the surface;

[0033] Among them, the dyeing bath ratio is 1:20; the dyeing rate is 30% / 30min; the dyes are blended weak acid dyes and neutral dyes, and the mixing ratio of weak acid dyes a...

Embodiment 2

[0037] A method for dyeing water-based polyurethane superfine fiber synthetic leather bass, using a high-temperature and high-pressure dyeing jigger as dyeing equipment, and adopting bathtub dyeing, specifically comprising the following steps:

[0038] 1) Base cloth treatment: use 3% (0.w.f) anionic surfactant leveling agent and 4g / L sodium chloride to treat the base cloth, the temperature is 20°C, and the treatment time is 10 minutes; the base cloth is water-based polyurethane super Fiber synthetic base cloth;

[0039] 2) Dyeing: add 4% (0.w.f) dyes, heat up to 75°C, keep warm for 10 minutes, make the dyes further dye the base fabric, continue to heat up to 105°C, keep warm for 25 minutes, make the dyes fully colored, and remove the possibility of neutral dyes The resulting floating color on the surface;

[0040] Among them, the dyeing bath ratio is 1:10; the dyeing rate is 30% / 30min; the dyes are mixed weak acid dyes and neutral dyes, and the mixing ratio of weak acid dyes ...

Embodiment 3

[0044] A method for dyeing water-based polyurethane superfine fiber synthetic leather bass, using a high-temperature and high-pressure dyeing jigger as dyeing equipment, and adopting bathtub dyeing, specifically comprising the following steps:

[0045] 1) Base cloth treatment: use 4% (0.w.f) anionic surfactant leveling agent and 4g / L sodium chloride to treat the base cloth, the temperature is 35°C, and the treatment time is 10 minutes; the base cloth is water-based polyurethane super Fiber synthetic base cloth;

[0046] 2) Dyeing: add 10% (0.w.f) dye, heat up to 75°C, keep warm for 10min, make the dye penetrate the base fabric further, continue to heat up to 105°C, keep warm for 25min, make the dye fully colored, remove the possibility of neutral dye The resulting floating color on the surface;

[0047] Among them, the dyeing bath ratio is 1:20; the dyeing rate is 40% / 30min; the dyes are blended weak acid dyes and neutral dyes, and the mixing ratio of weak acid dyes and neutr...

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Abstract

The invention provides a method for dyeing water-based polyurethane ultra-fine fiber synthetic leather bases. The island-shaped ultra-fine fiber synthetic leather bases are put into a high-temperature and high-pressure dyeing machine with a cloth roller; tap water is fed into the dyeing machine according to the dyeing bath ratio, and the The pre-dissolved leveling agent and sodium chloride are slowly added to the dyeing vat through the feeding tank according to the amount; the machine is turned on at room temperature, and then the mixed dyes of acid dyes and neutral dyes cooled after dissolving in hot water are added to the dyeing vat. Pre-dye at low temperature; then gradually increase the temperature to perform high-temperature color fixing treatment, and then lower the temperature to perform color-fixing water washing treatment. The product of the invention has bright color, high efficiency, better dyeing levelness and permeability, and the cost is lower than that of acid dyes to a greater extent. The degree of fastness and wet rubbing fastness are above grade 4, which is more suitable for water-based polyurethane dyeing system.

Description

technical field [0001] The invention relates to a superfiber dyeing technology, in particular to a method for dyeing water-based polyurethane superfine fiber synthetic leather basses. Background technique [0002] Natural leather resources are limited, and the development of excellent artificial synthetic leather has become a trend. At present, the output of microfiber synthetic leather in the world has already exceeded 100 million square meters, but the supply still exceeds the demand. Although the output of non-microfiber artificial leather and synthetic leather is large, it is difficult to meet the high standards of human beings. With the continuous progress and improvement of production and application technology, the gradual decline of production cost, the change of people's consumption concept and the enhancement of environmental protection awareness, the production and consumption of microfiber synthetic leather have grown rapidly, and it has been widely used in high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/39D06P1/41D06P1/653D06P1/673D06P3/87D06B3/32
CPCD06B3/32D06P1/39D06P1/41D06P1/6533D06P1/67358D06P3/8209
Inventor 戴家兵付廷旺李维虎祝彬陈磊唐朋朋
Owner LANZHOU SCISKY AQUEOUS POLYMER MATERIAL CO LTD