Environmentally friendly hydrophobic polyurethane ink and preparation method thereof

A water-based polyurethane and hydrophobic technology, applied in the field of ink, can solve the problems of poor water resistance and mechanical properties, reduce the content of hydrophilic groups, and the performance of polyurethane is not obvious, so as to achieve low surface tension, improve mechanical properties, and expand applications range effect

Active Publication Date: 2016-10-12
新东方油墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with solvent-based polyurethane, it has disadvantages such as water resistance and poor mechanical properties, which limit the scope of application
Especially the water-based polyurethane prepared by the external emulsification method, because it uses the conventional anionic emulsifier sodium dodecylbenzene sulfonate, will bring potential harm to food packaging, and its applicatio

Method used

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  • Environmentally friendly hydrophobic polyurethane ink and preparation method thereof
  • Environmentally friendly hydrophobic polyurethane ink and preparation method thereof
  • Environmentally friendly hydrophobic polyurethane ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1: Preparation of waterborne polyurethane

[0033] In a four-necked flask equipped with a stirrer, reflux condenser, and dropping funnel, 70.25g dehydrated polyester polyol and 29.75g isophorone diisocyanate, 4.00g dimethylolpropionic acid and 0.02g were added Dibutyltin dilaurate, heated to 80°C, react for 2 hours; then add 0.80g of 1,4-butanediol, continue the reaction for 1 hour, add 50.00g of acetone to control the viscosity of the reaction; cool the solution to 40 ℃, add 3.00g of triethylamine and 10.00g of acetone, neutralize for 10 minutes, add 0.75g of ethylenediamine, react for 20 minutes, under high-speed stirring, add 2.50g of sodium lauroyl glutamate emulsifier and 120.00g of deionized water; add 0.20g of NaHCO 3 Adjust the pH of the emulsion, add 0.20g of potassium persulfate and 10.00g of deionized water initiator solution, 10.00g of hexafluorobutyl methacrylate and 20.00g of 3-(methacryloyloxy)propane respectively. The fluorosilicon monomer mixture ...

Example Embodiment

[0038] Example 2: Preparation of water-based polyurethane

[0039] In a four-necked flask equipped with a stirrer, a reflux condenser and a dropping funnel, 45.00g dehydrated polyester polyol and 5.00g isophorone diisocyanate, 1.00g dimethylolpropionic acid and 0.01g were added Dibutyltin dilaurate, heated to 80°C and reacted for 2.5 hours; then 0.55g of 1,4-butanediol was added, and the reaction was continued for 1.5 hours, 150.00g of acetone was added to control the viscosity of the reaction; the solution was cooled to 40 ℃, add 2.00g of triethylamine and 8.00g of acetone, neutralize the reaction for 10 minutes, add 0.25g of ethylenediamine, react for 20 minutes, under high-speed stirring, add 1.50g of sodium lauroyl sarcosinate emulsifier and 50.00g deionized water; add 0.10g NaHCO 3 Adjust the pH value of the emulsion, and add dropwise an initiator solution of 0.10g of ammonium persulfate and 10.00g of deionized water, 5.00g of dodecafluoroheptyl methacrylate and 10.00g of vi...

Example Embodiment

[0040] Example 3: Preparation of waterborne polyurethane

[0041] In a four-necked flask equipped with a stirrer, reflux condenser and dropping funnel, 70.25g dehydrated polyester polyol and 29.75g isophorone diisocyanate, 4.00g dimethylolpropionic acid and 0.02g were added Dibutyltin dilaurate, heated to 80°C, react for 2 hours; then add 0.80g of 1,4-butanediol, continue the reaction for 1 hour, add 50.00g of acetone to control the viscosity of the reaction; cool the solution to 40 ℃, add 3.00g of triethylamine and 10.00g of acetone, neutralize and react for 10 minutes, add 0.75g of ethylenediamine, react for 20 minutes, under high-speed stirring, add 2.50g of myristoyl sarcosinate sodium emulsifier And 120.00g of deionized water; add 0.20g of NaHCO 3 Adjust the pH value of the emulsion, add 0.20g of potassium persulfate and 10.00g of deionized water initiator solution, 10.00g of tridecafluorooctyl methacrylate and 20.00g of tetravinyl-tetramethylcyclotetradecane, respectively. ...

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Abstract

The invention relates to an ink preparation method, in particular to a preparation method of waterborne polyurethane capable of effectively improving the water resistance and environmental friendliness of ink and belongs to the technical field of ink. Environmentally friendly hydrophobic polyurethane ink is prepared by mixing fluorine silicone modified waterborne polyurethane resin and auxiliary ink materials. The fluorine silicone modified waterborne polyurethane is prepared by conducting external emulsification on waterborne polyurethane resin with an emulsifier water solution and then polymerizing the waterborne polyurethane resin, a fluorine monomer and an organic silicone monomer, wherein the fluorine monomer accounts for 5-15% by weight of the silicone modified waterborne polyurethane resin, and the organic silicone monomer accounts for 10-30% by weight of the silicone modified waterborne polyurethane resin. The prepared ink has strong adhesion and good water resistance and environmental friendliness, the water resistant performance of printing ink can be remarkably improved, and a using range of the ink can be widened.

Description

technical field [0001] The invention relates to a method for preparing ink, in particular to a method for preparing water-based polyurethane that can effectively improve the water resistance and environmental protection of ink, and belongs to the technical field of ink. Background technique [0002] Due to its excellent environmental protection performance, water-based ink can solve the current emission and pollution problems in the packaging and printing industry. It has received more and more attention and has become the main object of current research. At the same time, its use will also replace Traditional solvent-based inks. Water-based ink has two remarkable features: one is low viscosity and good fluidity; the other is that it does not use organic solvents, which is conducive to environmental protection. Water-based ink uses water as a solvent, and its VOC content is extremely low. Compared with solvent-based inks, it greatly improves the working environment of ink m...

Claims

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Application Information

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IPC IPC(8): C09D11/107C08F283/00C08F230/08C08F220/22C08G18/66C08G18/08
CPCC08F283/006C08G18/0823C08G18/6692C09D11/107C08F230/08C08F220/22
Inventor 何桂玲
Owner 新东方油墨有限公司
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