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High-performance alcohol/water-based printing ink and preparation method thereof

A high-performance, alcohol-water-based technology, applied in inks, applications, household appliances, etc., can solve the problems of poor compatibility of alcohol-soluble laminating adhesives, poor compatibility of ester-soluble laminating adhesives, and reduced printing performance. Good solvent release, good alcohol and water solubility, strong printing adaptability

Inactive Publication Date: 2012-05-23
CHENGDU XINJIN TUOZHAN PRINTING INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the alcohol-water-based composite ink prepared with polyacrylate as the resin binder is mainly suitable for BOPP plastic film substrates and alcohol-soluble laminating adhesives due to the weak polarity of polyacrylate molecules. When used on PET plastic film substrates , the adhesion is poor, and the compatibility with the ester-soluble laminating adhesive is poor, and the composite strength is low; while the alcohol-water composite ink prepared with polyurethane as the resin binder is mainly suitable for PET plastics due to the strong polarity of the polyurethane molecule. When the film substrate and ester-soluble laminating adhesive are used on BOPP plastic film substrate, the adhesion is poor, and the compatibility with alcohol-soluble laminating adhesive is poor, and the composite strength is low
[0005] However, if the alcohol-water-based composite ink prepared with polyacrylate as the resin binder is simply mixed mechanically with the alcohol-water composite ink prepared with polyurethane as the resin binder, the general-purpose plastic gravure composite ink prepared will be different due to the combination of the two resins. The huge difference in the molecular structure of the binder leads to a significant reduction in printing performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of single-liquid general-purpose plastic gravure alcohol-water-based composite white ink

[0038] Dry the 500ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 85.5 g of isophordione diisocyanate (IPDI) to a 500 ml four-necked bottle with a stirrer and a thermometer, heat to 50° C. under stirring, add 0.03 g of dibutyltin dilaurate, stir and mix for 10 minutes, and then 50.0 g of hydroxypropyl acrylate was added dropwise. After reacting at 50° C. for 3 hours, 153.9 g of polyester diol with a molecular weight of 400 was added, and the reaction was continued at 50° C. for 4 hours. Then cool to 30° C. and discharge to obtain a polymerizable polyurethane macromonomer.

[0039] Add 2.5g of azobisisobutyronitrile, 120g of ethyl acetate and 130g of absolute ethanol into the reactor, stir evenly, then heat up to 75°C; Butyl ester, 200g of vinyl acetate, 50g of polymerizabl...

Embodiment 2

[0042] Preparation of single-liquid general-purpose plastic gravure alcohol-water-based composite yellow ink

[0043] Dry the 500ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 95.8 g of isophordione diisocyanate (IPDI) to a 500 ml four-necked bottle with a stirrer and a thermometer, heat to 60° C. under stirring, add 0.06 g of dibutyltin dilaurate, stir and mix for 15 minutes, and then 50.0 g of hydroxyethyl acrylate was added dropwise. After reacting at 60°C for 1 hour, 172.4 g of polyester diol with a molecular weight of 400 was added, and the reaction was continued at 60°C for 2 hours. Then cool to 30° C. and discharge to obtain a polymerizable polyurethane macromonomer.

[0044] 2.0g of benzoyl peroxide, 100g of ethyl acetate and 60g of absolute ethanol were added to the reactor, and after stirring evenly, the temperature was raised to 80°C; after the temperature stabilized, t...

Embodiment 3

[0047] Preparation of single-liquid general-purpose plastic gravure alcohol-water-based composite red ink

[0048] Dry the 500ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 85.5 g of isophordione diisocyanate (IPDI) to a 500 ml four-necked bottle with a stirrer and a thermometer, heat to 50° C. under stirring, add 0.08 g of dibutyltin dilaurate, stir and mix for 10 minutes, and then 50.0 g of hydroxypropyl acrylate was added dropwise. After reacting at 50°C for 1 hour, 230.8 g of polyester diol with a molecular weight of 600 was added, and the reaction was continued at 50°C for 45 hours. Then cool to 30° C. and discharge to obtain a polymerizable polyurethane macromonomer.

[0049] Add 1.2g of azobisisobutyronitrile, 100g of ethyl acetate and 50g of absolute ethanol into the reactor, stir evenly, then heat up to 80°C; Butyl ester, 200g of vinyl acetate, 60g of polymerizable polyu...

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PUM

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Abstract

The invention relates to intaglio printing ink for plastic and especially to high-performance alcohol / water-based printing ink and a preparation method thereof. The high-performance alcohol / water-based printing ink comprises polyurethane grafted polyacrylate copolymer prepared through a reaction between polyacrylate with hydroxy groups and polyurethane perpolymer with isocyanate as its end group, alcohol / water-soluble acrylic acid ester copolymer, alcohol / water-soluble polyurethane resin, organic / inorganic pigments, a dispersant, an adhesion promoter, polyethylene wax and a mixed solvent. According to the invention, excellent performance of the polyurethane grafted polyacrylate copolymer enables the intaglio alcohol / water-based printing ink for plastic to have good alcohol / water-solubility and solvent release; introduction of polyurethane and synergism of the polyurethane grafted polyacrylate copolymer allow the ink to have good adhesive force on a variety of plastic film substrates (BOPP, PET, PA, PVC, PE, PC, etc.); the ink has a good printing effect, strong adaptability, adapting to a variety of laminating adhesives (ester soluble type and alcohol soluble type) and high bonding strength and can be used for printing of various plastic substrates; the ink is cheaper and environment-friendlier compared to pure polyurethane printing ink and has better performance and stronger printing adaptability compared to pure acrylic acid ester copolymer printing ink; the ink provided in the invention has a wide application prospect in the field of intaglio printing for plastic.

Description

technical field [0001] The invention relates to a plastic gravure ink, especially a high-performance alcohol water-based ink and a preparation method thereof. technical background [0002] In recent years, with the continuous improvement of people's living standards, it not only drives the rapid growth of the packaging industry, but also promotes the continuous development of plastic gravure ink technology and market. At present, plastic gravure ink has been widely used in plastic packaging, such as various plastic film substrate packaging in food, medicine, agricultural and sideline products, daily necessities and other industries, and its application range covers almost all packaging fields. In order to adapt to the pursuit of "green and environmental protection" in social development, plastic gravure ink companies and related research institutions have been committed to the research and development of "green" inks in recent years, in order to use clean, pollution-free or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C08G18/62C08F220/10C08F218/08C08F220/28C09D11/102C09D11/107
Inventor 付勇金勇
Owner CHENGDU XINJIN TUOZHAN PRINTING INK
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