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Preparing method for room temperature curing non-isocyanate waterborne polyurethane-based macromolecular dye

A non-isocyanate, water-based polyurethane technology, used in dyeing, organic dyes, textiles and papermaking, etc., can solve the problems of great harm to human body and the environment, sensitive to environmental conditions, and high toxicity

Active Publication Date: 2016-01-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, isocyanate itself is very toxic and sensitive to environ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In a four-neck flask equipped with a condenser, a stirrer, a thermometer and a dropping funnel, add 4 mmol of two-membered ring carbonate, then dropwise add 2 mmol of ethylenediamine bis-2-hydroxypropanesulfonate sodium, 2 drops of catalyst triethylamine Invert for 10 hours at 70°C, add 1mmol of 1,4-diaminoanthraquinone material, invert for 5h at 70°C, add 2mmol of γ-aminopropyltriethoxysilane coupling agent after cooling down to 30°C, react for 5h, and finally add A certain amount of deionized water was emulsified at a high speed for 0.5h, and then centrifuged at 3000rpm for 30min to remove unreacted dye precursors to obtain a room-temperature-curable non-isocyanate polyurethane-based polymer dye dispersion with a solid content of about 30%.

[0015] Mix 20wt% room temperature curing non-isocyanate polyurethane-based polymer dye dispersion, 20wt% thickener PFL, and 60wt% deionized water evenly, print on cotton fabric, and dry at room temperature for 12 hours.

Embodiment 2

[0017] In a four-necked flask equipped with a condenser, a stirrer, a thermometer and a dropping funnel, add 4mmol of two-membered ring carbonate, then dropwise add 1mmol of sodium 2,4-diaminobenzenesulfonate, 2 drops of catalyst triethylamine at 70°C React for 10 hours, add 2mmol of 1,8-diaminoanthraquinone material, react for 5 hours at 70°C, add 2mmol of 4-aminobenzenesulfonyl bis(dodecylphenylsulfonyl)titanate isopropyl titanate after cooling down to 30°C, and react for 5 hours , and finally add a certain amount of deionized water, emulsify at high speed for 0.5h, and then centrifuge at 3000rpm for 30min to remove unreacted dye precursors, and obtain a room temperature curing non-isocyanate polyurethane-based polymer dye dispersion with a solid content of about 50%.

[0018] Mix 40wt% room temperature curing non-isocyanate polyurethane-based polymer dye dispersion, 10wt% thickener PFL, and 50wt% deionized water evenly, coat the cotton fabric, and dry at room temperature for...

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PUM

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Abstract

The invention discloses a preparing method for room temperature curing non-isocyanate waterborne polyurethane-based macromolecular dye, and belongs to the technical field of spinning chemical engineering. The preparing method includes the steps that non-isocyanate waterborne polyurethane is prepared through a ring-opening reaction of a cyclic carbonate low polymer and hydrophilic polyamine; a dye parent containing amino groups serves as a color body to be introduced into a polyurethane molecular chain, and the room temperature curing non-isocyanate waterborne polyurethane-based macromolecular dye is prepared with a silane coupling agent or a titanate coupling agent serving as an end-capping agent. The preparing method is environmentally friendly and improves the water resistance, heat stability and mechanical properties of common waterborne polyurethane-based macromolecular dye, and washing and dry-wet rubbing fastness of a coating or printed fabric of the dye reaches 4-5 levels or more.

Description

technical field [0001] The invention belongs to the technical field of textile chemicals, and in particular relates to a method for preparing a room-temperature-curable non-isocyanate water-based polyurethane-based polymer dye. Background technique [0002] Water-based polyurethane-based polymer dyes are colored polymers formed by introducing dye molecules into the main chain or side chain of polyurethane through chemical reactions. It is a combination of polyurethane polymer materials and dye molecules at the molecular level, and has both dye color and polyurethane film-forming properties. It is a functional polymer material with development prospects. Because the dye is connected with the polyurethane molecular chain by chemical bonds, the water-based polyurethane-based polymer dye has excellent solvent resistance and migration resistance. In addition, water-based polyurethane-based polymer dyes have large molecular size, good chemical stability, are not easily absorbed b...

Claims

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Application Information

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IPC IPC(8): C09B69/10C08G71/04D06P1/52
Inventor 王潮霞冒海燕赵彩云殷允杰陈坤琳
Owner JIANGNAN UNIV
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