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Method for producing polyurethane coated pigment microcapsules for foam dyeing

A technology for coating pigments and polyurethane, applied in the direction of plant fibers, etc., can solve the problems of easy change, unstable pigment color, difficult to handle, etc.

Inactive Publication Date: 2017-08-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the whole society's awareness of environmental protection and the impact of the world's energy crisis, traditional dyes in the dyeing and printing process produce a large amount of wastewater and are difficult to handle. This process also consumes a lot of energy, and through The color of the pigment after printing is unstable and prone to change, which can no longer meet people's needs in modern society

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 0.7 g of sodium dodecylbenzenesulfonate to 150 ml of deionized water at room temperature, add 2.5 g of pigment powder therein, 2.5 g of isophorone diisocyanate, add 10 drops of catalyst dibutyltin dilaurate, pass Phacoemulsification for 5 minutes. Under high-speed stirring conditions, 4.5 g of polyethylene glycol 400 was added dropwise into a constant-pressure dropping funnel, and reacted at 50° C. for 1.5 hours. Raise the temperature to 65°C, add 1.05 g of 1,4-butanediol dropwise under constant pressure, and collect the product after reacting for 2 hours. The product was transferred to a round-bottomed flask, and the water was evaporated by rotary heating under vacuum conditions to obtain polyurethane-coated pigment microcapsules. Take 2g of microcapsules, 0.2g of sodium lauryl sulfate, and 17.8ml of deionized water to make a foaming solution. Take the solution and foam for 2 minutes, and then use a coating proofer to evenly coat the foam on cotton fabrics, and he...

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PUM

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Abstract

The invention discloses a method for producing polyurethane coated pigment microcapsules for foam dyeing and belongs to the technical field of macromolecular textile chemistry. According to the method disclosed by the invention, the polyurethane coated pigment microcapsules with shells containing CO2 gas cavities are synthesized; the polyurethane coated pigment microcapsules are uniformly coated on the surface of a cotton textile by utilizing a foam coating method, so that pigment and the cotton textile are endowed with high-fastness color performance. By adopting the foam coating method, the consumption of energy sources and the emission of wastewater can be reduced. The pigment is covered by a membrane property of polyurethane macromolecule, so that the color stability of the pigment is improved; the shells of the microcapsules contain the CO2 gas cavities so that a certain warm-keeping property is given to the textiles.

Description

technical field [0001] The patent of the invention belongs to the technical field of polymer textile chemical industry, and specifically relates to a method for coating pigment microcapsules with polyurethane for foam dyeing. Background technique [0002] With the whole society's awareness of environmental protection and the impact of the world's energy crisis, traditional dyes in the dyeing and printing process produce a large amount of wastewater and are difficult to handle. This process also consumes a lot of energy, and through The color of the pigment after printing is unstable and prone to change, which can no longer meet people's needs in modern society. Finding and developing an environmentally friendly dye, improving the efficiency of dye application and reducing energy consumption have become the development direction of the dyeing and finishing industry. [0003] During the synthesis of water-based polyurethane, the conditions are mild and controllable. During th...

Claims

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Application Information

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IPC IPC(8): C08J9/02D06P3/60D06P1/52D06M15/564C08G18/75C08G18/32D06M101/06
Inventor 殷允杰林文华李文佳王潮霞陈坤林
Owner JIANGNAN UNIV
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