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Method for preparing binder resin for water-based ink and application thereof

A technology of water-based inks and binders, applied in inks, applications, household appliances, etc., can solve the problems of organic solvent volatilization pollution, poor ink use effect, and environmental hazards, and achieve good stability, excellent adhesion fastness, good The effect of wetting properties

Inactive Publication Date: 2009-11-25
BEIJING COMENS YANSHAN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a preparation method and application of a binder resin for water-based inks, which solves the problem of volatilization and pollution of organic solvents when traditional inks are diluted with organic solvents (VOCs) in the printing process, causing odor and endangering the environment and users. , and the existing water-based inks are often due to the lack of suitable resins for water-based inks, resulting in poor ink use effects

Method used

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  • Method for preparing binder resin for water-based ink and application thereof
  • Method for preparing binder resin for water-based ink and application thereof
  • Method for preparing binder resin for water-based ink and application thereof

Examples

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preparation example Construction

[0020] The embodiment of the present invention provides a preparation method and application of a binder resin for water-based ink, which specifically includes the following steps: mixing 40-70 parts by mass of polyester and / or polyether polyol with 1-10 parts by mass of ionizing agent Mix and heat to 100-110°C, cool to 50-60°C, add 10-30 parts by mass of diisocyanate, heat up to 70-80°C and react for 3-4 hours to prepare a preprepared product with an NCO content of 4%-5% (mass). Polymer;

[0021] Dissolving 1 to 10 parts by mass of a linking agent in 40 to 70 parts by mass of cold water at 5 to 10°C is added to 10 to 30 parts by mass of the prepolymer under stirring to obtain a polyurethane emulsion;

[0022] Stir and mix 30-60 parts by mass of the prepared polyurethane emulsion, 1-5 parts by mass of ammonia water with a concentration of 28%, 20-40 parts by mass of deionized water and 1-5 parts by mass of thickener , to obtain an aqueous emulsion with a solid content of 20% ...

Embodiment 1

[0031] First, take the raw materials according to the ratio in the table below:

[0032]

[0033] The preparation method is as follows:

[0034] (1) Mix and heat 40 parts by mass of polyester / polyether polyol and 2 parts by mass of ionizing agent dimethylolpropionic acid, add 10 parts by mass of diisocyanate after cooling, and heat up to 70-80°C for 3- Prepared into a prepolymer with an NCO content of 4% to 5% (mass) in 4 hours;

[0035] (2) Dissolve 2 parts by mass of the extender ethylenediamine in 40 parts by mass of cold water, and add it to 52 parts by mass of the prepolymer obtained above under the stirring condition of a turbo mixer, and fully hydrate to obtain a polyurethane emulsion ;

[0036] (3) Stir and mix the 94 mass parts of polyurethane emulsion obtained with 28% ammonia water of 1 mass part, the deionized water of 38 mass parts, and the ASE-60 thickener of 2 mass parts to obtain an aqueous emulsion;

[0037] (4) 2 parts by mass of methyl methacrylate, 5 ...

Embodiment 2

[0039] Present embodiment provides a kind of method that adopts another kind of proportioning raw material to prepare the resin that water-based ink is used, and gets each raw material according to the following table proportioning:

[0040]

[0041]

[0042] The preparation method is as follows:

[0043] (1) Mix 45 parts by mass of polycarbonate diol and 22 parts by mass of polybutadiene diol with 2 parts by mass of ionizing agent 5-sulfoisophthalic acid and heat to 100-110°C until dissolved and mixed After fully cooling to 50-60°C, add 28 parts by mass of isophorone diisocyanate, heat up to 70-80°C and react for 3-4 hours to prepare a prepolymer with an NCO content of 4%-5% (by mass);

[0044] (2) Dissolve 8 parts by mass of ethylene glycol as a linking agent in 70 parts by mass of cold water at 5-10°C, and add to 97 parts by mass of the above-obtained prepolymer under the stirring condition of a turbo mixer, and hydrate Fully obtain polyurethane emulsion;

[0045] (3)...

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Abstract

The invention discloses a method for preparing a binder resin for water-based ink and application thereof. The method comprises the following steps of: reacting polyester and / or polyether polyol, an ionized reagent and diisocyanate to prepare a prepolymer with NCO content of between 4 and 5 percent; dissolving a chain extender in cold water, and adding the mixture into the prepolymer under the stirring to obtain a polyurethane emulsion; stirring the obtained polyurethane emulsion, 28 percent ammonia water, deionized water and a thickening agent evenly to obtain an aqueous emulsion; and mixing methyl methacrylate, butyl acrylate, acrylic acid, acrylamide, sodium dodecyl sulfate and potassium peroxydisulfate with the aqueous emulsion to obtain the resin for the water-based ink. The method ensures that the water-based ink prepared by the obtained binder resin can be used for various plastic substrates and has excellent adhesion and good wetting property for polar and nonpolar substrates by synthesizing acrylic acid modified aqueous polyurethane, utilizing the temperature resistance and the flexibility of polyurethane, and introducing acrylic acid chain segments in a molecular structure at the same time.

Description

technical field [0001] The invention relates to a resin preparation technology, in particular to a polyurethane binder resin for water-based ink. Background technique [0002] The existing common gravure printing ink needs to be diluted with organic solvent (VOC) during preparation and printing, but the added organic solvent (VOC) is volatile and smelly, which not only pollutes the environment, but also harms the body of printing operators. will cause damage. Moreover, organic solvents are flammable and explosive liquids, which can easily cause fires due to static electricity and short-circuited wires. This kind of gravure printing ink will also cause corresponding solvent residues in printed products. If it is used in the printing of food packaging, it will not only contaminate food, but also have a certain impact on environmental protection after the packaging bags are discarded. [0003] Plastic water-based ink has no volatilization of organic solvents (VOC) and no odor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08F283/00C09D11/10C09D11/102
Inventor 赫常生沈峰邓煜东
Owner BEIJING COMENS YANSHAN TECH
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