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Ink water dispersible quick-drying low temperature self-crosslinking acrylate resin and preparation method thereof

An acrylate and dispersibility technology, which is used in the field of water-dispersible, fast-drying, low-temperature self-crosslinking acrylate resin for ink and its preparation, can solve the problem of poor mechanical properties of resin coating films, poor water and solvent resistance, and the influence of the surrounding environment of construction workers. , large molecular weight distribution coefficient, etc., to achieve the effect of improving water and solvent resistance, good storage stability, and moderate molecular weight

Inactive Publication Date: 2016-09-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chain transfer agent t-dodecylmercaptan is used in the resin preparation process, which is not only toxic, but also has a foul smell, which will affect the construction workers and the surrounding environment.
At the same time, the resin prepared by the invention has a smaller molecular weight, a wider molecular weight distribution, and a larger molecular weight distribution coefficient, which will cause poor mechanical properties and water and solvent resistance of the resin coating film.

Method used

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  • Ink water dispersible quick-drying low temperature self-crosslinking acrylate resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take 50g of ethanol and 10g of ethyl acetate mixed solvent into a 250mL four-necked flask equipped with a stirrer and a reflux condenser, heat to 75°C and keep reflux for 10min; mix 16g of methyl methacrylate, 16g of butyl acrylate, Mix 6g of acrylic acid, 2g of 2-hydroxypropyl acrylate, 1.2g of diacetone acrylamide, and 0.4g of azobisisobutyronitrile evenly. After diacetone acrylamide and azobisisobutyronitrile dissolve, pass 60mL constant pressure drop Add the funnel dropwise into the flask, and the dropwise addition is completed in 2.5 hours; after the dropwise addition, react at this temperature for 4 hours, then cool down to 40°C, add 2-3mL ammonia water dropwise to the flask, and continue stirring; weigh 40g of water and add it to In the flask, continue to stir for 20min, discharge.

[0052] After testing, the obtained water-dispersible low-temperature self-crosslinking acrylate resin is a colorless translucent viscous liquid with no pungent smell, stable storage,...

Embodiment 2

[0057] Take 40g of ethanol and 10g of ethyl acetate mixed solvent into a 250mL four-necked flask equipped with a stirrer and a reflux condenser, heat to 73°C and keep reflux for 10min; mix 20g of ethyl methacrylate, 20g of ethyl acrylate, Mix 7.5g of methacrylic acid, 2.5g of 2-hydroxyethyl acrylate, 1g of diacetone acrylamide, and 0.5g of azobisisobutyronitrile evenly. Add the dropping funnel dropwise into the flask, and the dropwise addition is completed in 3 hours; after the dropwise addition, react at this temperature for 4 hours, then cool down to 40°C, add 4-5mL ammonia water dropwise into the flask, and continue stirring; weigh 50g Water was added into the flask, stirring was continued for 20 min, and the material was discharged.

[0058] After testing, the obtained water-dispersible low-temperature self-crosslinking acrylate resin is a colorless translucent viscous liquid with no pungent smell, stable storage, glass transition temperature of 16°C, solid content of 31%,...

Embodiment 3

[0062] Take a mixed solvent of 40g ethanol and 30g ethyl acetate, add it to a 250mL four-neck flask equipped with a stirrer and a reflux condenser, heat to 72°C and keep reflux for 15min; mix 15g ethyl methacrylate, 9g acrylic acid‐2 ‐Ethylhexyl ester, 4.5g methacrylic acid, 1.5g 2-hydroxypropyl acrylate, 0.6g N‐methylolacrylamide, 0.3g azobisisobutyronitrile, mix well, and wait until N‐methylolacrylamide After the amide and azobisisobutyronitrile were dissolved, they were added dropwise into the flask through a 60mL constant pressure dropping funnel, and the dropwise addition was completed in 2.5 hours; after the dropwise addition, reacted at this temperature for 3.5 hours, then cooled to 40°C, and poured into the flask Add 2-3mL triethanolamine dropwise, and continue to stir; weigh 30g of water and add it into the flask, continue to stir for 20min, and discharge.

[0063] After testing, the obtained water-dispersible low-temperature self-crosslinking acrylate resin is a colo...

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Abstract

The invention discloses ink water-dispersible quick-drying low-temperature self-crosslinking acrylate resin and a preparation method thereof. In terms of parts by mass, the resin consists of 12-20 parts of hard monomers, 12-20 parts of soft monomers, 4.5-10 parts of first-class hydrophilic monomers, 0.5-2.5 parts of second-class hydrophilic monomers, 0.6-20 parts of 2 parts of cross-linking monomer, 0.3-0.6 parts of initiator, 50-70 parts of solvent are copolymerized, then adding a pH regulator to adjust the pH to 7-8, and adding 30-60 parts of water as a dispersant. The ink formulated with the water-dispersible acrylate resin as a binder can achieve low-temperature (<50°C) cross-linking and curing, and the drying and curing time is short (surface dry time 25s~50s), and it can be used on low-polarity materials PE and PP films. Has excellent adhesion (grade 0), good tinting strength, anti-adhesion and water and solvent resistance.

Description

technical field [0001] The invention relates to the technical field of acrylate resin for ink, in particular to a water-dispersible and fast-drying low-temperature self-crosslinking acrylate resin for ink and a preparation method thereof. Background technique [0002] Printing ink is composed of binder resin, pigments, additives and solvents. It is widely used in packaging materials. Its performance and solvent used are completely determined by the resin. At present, most of the binder resins used in printing inks are polyamide resins, chlorinated polypropylene, polyurethane resins, etc. These traditional solvent-based inks have good adhesion and water and solvent resistance, but they are all based on benzene, ketones, and esters. Such organic solvents are used as diluents. During production and use, the volatilization of these organic solvents will cause serious air pollution and endanger human health and the ecological environment. Therefore, various countries have formula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/28C08F220/58C08F2/06C09D11/107
Inventor 皮丕辉陈曦文秀芳徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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