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A kind of preparation method of polyurethane modified pigment printing adhesive

A technology of polyurethane modification and pigment printing, which is applied in the fields of dyeing, textiles and papermaking, etc. It can solve the problems of complicated process, difficult industrialization, low wet rubbing fastness and rinsing color fastness, etc., to improve the reaction rate, Good hand quality and fastness to washing and soaping, which is conducive to the effect of industrialization

Active Publication Date: 2018-07-27
SUZHOU INSILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This document is the closest prior art of the present invention, but the wet rubbing fastness and rinsing color fastness of the product that this method is made are not high, and process is complicated simultaneously, is not easy to industrialization promotion

Method used

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  • A kind of preparation method of polyurethane modified pigment printing adhesive
  • A kind of preparation method of polyurethane modified pigment printing adhesive
  • A kind of preparation method of polyurethane modified pigment printing adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of polyurethane modified pigment printing adhesive, comprising the following steps:

[0031] Step 1: Evaporate and dehydrate the polyether polyol with a molecular weight of 1500 at a temperature of 110°C and a vacuum pressure of 0.1MPA for 1 hour;

[0032] The second step: slowly add polyether polyol and isophorone diisocyanate into the container according to the molar ratio of 1:1.5, stir and add 0.05% volume of dibutyltin dilaurate and 0.05% volume of Acrylic acid, adjust the temperature to 65°C for 3 hours;

[0033] The third step: heating up to 80° C., adding 1% by mass of 2,2-dimethylolpropionic acid and 0.01% by mass of styrene to react for 2 hours;

[0034] Step 4: Cool down to room temperature, add triethylamine and 2,2-dimethylolpropionic acid to carry out neutralization reaction, and stir rapidly for 1 hour;

[0035] Step 5: Add the same volume of distilled water into the container and stir rapidly for 1 hour to prepare the polyurethane ...

Embodiment 2

[0037] A preparation method of polyurethane modified pigment printing adhesive, comprising the following steps:

[0038] Step 1: Evaporate and dehydrate the polyether polyol with a molecular weight of 1500 at a temperature of 115°C and a vacuum pressure of 0.1MPA for 1 hour;

[0039] The second step: slowly add polyether polyol and isophorone diisocyanate into the container according to the molar ratio of 1:1.5, stir and add 0.06% volume of dibutyltin dilaurate and 0.1% volume of Acrylic acid, adjust the temperature to 70°C for 3 hours;

[0040] The third step: heating up to 85°C, adding 2,2-dimethylolpropionic acid of 2 mass% and styrene of 0.02% mass to react for 2h;

[0041] Step 4: Cool down to room temperature, add triethylamine and 2,2-dimethylolpropionic acid to carry out neutralization reaction, and stir rapidly for 1 hour;

[0042] Step 5: Add the same volume of distilled water into the container and stir rapidly for 2 hours to prepare the polyurethane modified pigmen...

Embodiment 3

[0044] A preparation method of polyurethane modified pigment printing adhesive, comprising the following steps:

[0045] Step 1: Evaporate and dehydrate the polyether polyol with a molecular weight of 1500 at a temperature of 110°C and a vacuum pressure of 0.1MPA for 1 hour;

[0046] The second step: slowly add polyether polyol and isophorone diisocyanate into the container according to the molar ratio of 1:1.5, stir and add 0.05% volume of dibutyltin dilaurate and 0.1% volume of Acrylic acid, adjust the temperature to 65°C for 3 hours;

[0047] The third step: heating up to 85°C, adding 1% by mass of 2,2-dimethylolpropionic acid and 0.02% by mass of styrene to react for 2 hours;

[0048] Step 4: Cool down to room temperature, add triethylamine and 2,2-dimethylolpropionic acid to carry out neutralization reaction, and stir rapidly for 1 hour;

[0049] Step 5: Add the same volume of distilled water into the container and stir rapidly for 1 hour to prepare the polyurethane mod...

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Abstract

The invention discloses a polyurethane-modified pigment printing binding agent preparation method and belongs to the field of pigment printing binding agent synthesis.The polyurethane-modified pigment printing binding agent preparation method includes the steps of subjecting polyether-type polyalcohol with the molecular weight being 1500 to dehydration by evaporation, mixing the dehydrated polyether-type polyalcohol with isophorone diisocyanate while stirring according to a molar ratio of 1:1.5, dropwise adding dibutyltin dilaurate and acrylic acid to perform temperature rise reaction, adding 2,2-dimethylol propionic acid and styrene to continue reacting prior to decreasing to the room temperature, adding triethylamine for neutral reaction and adding distilled water for emulsification so as to obtain a polyurethane-modified pigment printing binding agent.On the basis of the prior art, the polyurethane-modified pigment printing binding agent preparation method has the advantages that reaction conditions are optimized, and the acrylic acid and the styrene are added, so that polyurethane modification quality can be improved; the obtained polyurethane-modified pigment printing binding agent is excellent in hand feel quality, washable and good in soap fastness, thereby being high in economic benefit and beneficial to industrial popularization.

Description

Technical field: [0001] The invention relates to a preparation method of a polyurethane modified paint printing adhesive, which belongs to the field of paint printing adhesive synthesis. Background technique: [0002] In China, the quality requirements of pigment printing adhesives are often high, and the adhesives are required to be multi-functional and can be used under various conditions such as: acid, alkali, high temperature, and low temperature, which greatly increases the quality control of adhesive products. Compared with foreign high-grade adhesives, the quality of domestic adhesives is unstable, mainly in the aspects of small molecular weight, poor emulsification system, uneven particle diameter distribution, and high monomer residue. In addition, the problem with self-crosslinking adhesives is the release of formaldehyde. In order to improve the wear resistance and washing resistance of the adhesive, N-methylolacrylamide is added to the synthesis of self-crosslink...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/67C08G18/66C08G18/48C08G18/12C08G18/08D06P1/52
CPCC08G18/0838C08G18/12C08G18/48C08G18/6755C08G18/755D06P1/5285C08G18/348C08G18/0823
Inventor 周继东
Owner SUZHOU INSILK CO LTD
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