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A kind of water-based ink binder and preparation method thereof

A technology of water-based ink and connecting material, applied in the directions of ink, application, household appliances, etc., to achieve the effects of uniform particle morphology, good water resistance and heat resistance, and simple preparation method

Active Publication Date: 2016-10-26
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the modification process and formula.

Method used

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  • A kind of water-based ink binder and preparation method thereof
  • A kind of water-based ink binder and preparation method thereof
  • A kind of water-based ink binder and preparation method thereof

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preparation example Construction

[0045] The preparation method of the aqueous ink binder of the present invention includes the following steps:

[0046] 1) After the polymer polyol is dehydrated under vacuum at 100-110°C, the polyisocyanate compound is added and reacted at 75-95°C for 3 to 4 hours to obtain a waterborne polyurethane prepolymer; among them, the polymer polyol and the polyisocyanate The molar ratio of the compounds is 3.5:1; wherein the polymer polyol is polycaprolactone diol, polycarbonate diol or polyether diol;

[0047] The chemical formula of the polyisocyanate compound is X(NCO) n , Where X is one or two of aliphatic hydrocarbon groups containing 4-12 carbon atoms, alicyclic or aromatic hydrocarbon groups containing 6-12 carbon atoms, and aromatic aliphatic hydrocarbon groups containing 7-15 carbon atoms ;

[0048] When X is an aliphatic hydrocarbon group containing 4-12 carbon atoms, the polyisocyanate compound is TMDI (tetramethylene diisocyanate), HDI (hexamethylene diisocyanate), dodecyl dii...

Embodiment 1

[0065] A water-based ink binder, by weight percentage, including 35.85% of water-based polyurethane prepolymer, 1% of chain extender, 1% of organic amine, 16% of acrylate monomers, 1% of composite emulsifier , 0.05% initiator, 0.1% pH adjuster and 45% deionized water.

[0066] The preparation method of the aforementioned water-based ink binder includes the following steps:

[0067] 1) Dehydrate the polymer polyol under vacuum at 110°C until the moisture content is less than 0.2%, then add it to a 250mL three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, and then add the polyisocyanate compound to the three-necked flask. At the same time, the content of -NCO was measured by the di-n-butylamine titration method. When the content of -NCO dropped to half of the initial value, that is, the reaction time was 3.5h, the water-based polyurethane prepolymer was obtained; among them, the polymer polyol and polyol The molar ratio of the isocyanate compound is 3.5...

Embodiment 2

[0072] A water-based ink binder, by weight percentage, comprising 14% of water-based polyurethane prepolymer, 3% of chain extender, 3% of organic amine, 16% of acrylate monomer, 1.5% of composite emulsifier , 0.05% initiator, 0.15% pH adjuster and 45% deionized water.

[0073] The preparation method of the aforementioned water-based ink binder includes the following steps:

[0074] 1) Dehydrate the polymer polyol under vacuum at 105°C until the moisture content is less than 0.2%, then add it to a 250mL three-necked flask equipped with a stirrer, thermometer and reflux condenser, and then add the polyisocyanate compound to the three-necked flask. At the same time, the content of -NCO was measured by di-n-butylamine titration method. When the content of -NCO dropped to half of the initial value, that is, the reaction time was 4h, the waterborne polyurethane prepolymer was obtained; among them, the polymer polyol and polyisocyanate The molar ratio of the compound is 3.5:1;

[0075] 2)...

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Abstract

The invention provides a water-based ink vehicle and a preparation method thereof. The water-based ink vehicle is prepared from 14-35.85% of water-based polyurethane prepolymer, 1-3% of chain extender, 1-3% of organic amine, 16-33.25% of acrylate monomers or vinyl monomers or the mixture of the acrylate monomers and the vinyl monomers, 1-2% of compound emulsifier, 0.05-0.15% of initiator, 0.1-0.5% of pH regulator and 45-55% of deionized water; the water-based polyurethane ink vehicle having the grain diameter in the range of 40-50nm is prepared from such major raw materials as polymer polyol, a diisocyanate compound and a hydrophilic chain extender, wherein the water-based polyurethane ink vehicle takes water-based polyurethane resin as a shell and the polymer of the acrylate monomers or the vinyl monomers or the mixture of the acrylate monomers and the vinyl monomers as a core. The water-based ink vehicle is green and environmentally friendly, and good in adhesion and initial dryness to a polar substrate and a non-polar substrate by taking water as a solvent, and further has excellent water resistance and heat resistance.

Description

Technical field [0001] The invention belongs to the field of polymer material preparation, and relates to a water-based ink binder and a preparation method thereof. Background technique [0002] In recent years, people's demand for the safety of packaging and printing has become higher and higher. With the environmental protection characteristics of low VOC, non-flammable, non-toxic and no odor, water-based inks are becoming the mainstream and trend of the development of the ink industry. The ink binder determines the performance of the ink, especially the performance of printing, such as viscosity, drying speed, fluidity, gloss and so on. At present, most high-end inks are made with water-based acrylic resin as the connecting material. Although its adhesion to plastic flexible packaging has been improved, it has excellent weather resistance, water resistance, and alkali resistance, but it is in the gloss and In terms of chemical resistance, there are still shortcomings such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F2/26C08F2/30C08G18/66C08G18/42C08G18/44C08G18/48C08G18/10C09D11/107C09D11/106
Inventor 杜娟
Owner BAOJI UNIV OF ARTS & SCI