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Adhesion promoter for radiation-cured coatings and preparation method thereof

An adhesion promoter and radiation curing technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of carboxylate, etc., can solve the problems of poor adhesion fastness, large curing shrinkage, and poor flexibility of coatings , to achieve the effects of strong controllability of molecular segments and molecular weight, enhanced adhesion fastness, and simple preparation process

Active Publication Date: 2016-08-17
YANTAI BOYUAN TECH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the technical defects of large curing shrinkage rate, poor flexibility and poor coating adhesion fastness of conventional radiation-cured adhesion promoters, and to provide a molecular structure of conventional radiation-cured adhesion promoters. A novel structural radiation-cured adhesion promoter of polyε-caprolactone structural unit; at the same time, a preparation method of the novel radiation-cured adhesion promoter is also provided

Method used

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  • Adhesion promoter for radiation-cured coatings and preparation method thereof
  • Adhesion promoter for radiation-cured coatings and preparation method thereof
  • Adhesion promoter for radiation-cured coatings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 116g of hydroxyethyl acrylate, 0.6g of butyl titanate, 0.3g of hydroquinone, 114g of ε-caprolactone (n=1) into the reaction flask equipped with cooling reflux, heating device, thermometer and stirring, and start Stir and heat, raise the temperature to 140°C, stir and react for 8 hours; after that, cool down to below 80°C, slowly add 90g of succinic anhydride, after stirring and dissolving completely, raise the temperature to 120°C, and keep it warm for 6h; after the reaction, cool down to 60°C, After hot filtration, the radiation-cured adhesion promoter (theoretical n value=1) was obtained as a colorless viscous liquid with a viscosity (25° C.) of about 18000 mPa·s.

[0037] The UV curing light of 50 parts of aliphatic polyurethane acrylate with a molecular weight (Mw) of about 2200, 30 parts of 1,6-hexanediol diacrylate, 17 parts of trimethylolpropane triacrylate, and 3 parts of UV initiator In the oil batching, introduce the adhesion promoter described in 5% of th...

Embodiment 2

[0039] Add 116g of hydroxyethyl acrylate, 0.6g of butyl titanate, 0.3g of hydroquinone, 228g of ε-caprolactone (n=2) into the reaction flask equipped with cooling reflux, heating device, thermometer and stirring, and start Stir and heat, raise the temperature to 140°C, stir and react for 8 hours; after that, cool down to below 80°C, slowly add 90g of succinic anhydride, after stirring and dissolving completely, raise the temperature to 120°C, and keep it warm for 6h; after the reaction, cool down to 60°C, After hot filtration, the radiation-cured adhesion promoter (theoretical n value=2) was obtained as a colorless viscous liquid with a viscosity (25° C.) of about 16000 mPa·s.

[0040] The UV curing light of 50 parts of aliphatic polyurethane acrylate with a molecular weight (Mw) of about 2200, 30 parts of 1,6-hexanediol diacrylate, 17 parts of trimethylolpropane triacrylate, and 3 parts of UV initiator In the oil ingredients, 5% of the total amount of the varnish formula was ...

Embodiment 3

[0042] Add 130g of hydroxyethyl methacrylate, 0.6g of monobutyl tin oxide, 0.3g of 4-methoxyphenol, 228g of ε-caprolactone in the reaction flask equipped with cooling reflux, heating device, thermometer and stirring (n =2), start stirring and heating, heat up to 180°C, stir and react for 2h; after that, cool down to below 80°C, slowly add 90g of succinic anhydride, after stirring and dissolving completely, raise the temperature to 140°C, keep warm for 2h; after the reaction, Cool down to 60°C and heat filter to obtain the radiation curing adhesion promoter (theoretical n value=2), light yellow viscous liquid with a viscosity (25°C) of about 16000 mPa·s.

[0043] The radiation-cured adhesion promoter described in Example 3 was tested with the same formula as in Example 1, and the test results were basically consistent with Example 2.

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Abstract

The invention discloses a radiation curable coating adhesion promoter and preparation method thereof. The adhesion promoter is of a linear structure, one end in the molecular structure is provided with (methyl)acrylate double bond, the other end is a carboxyl structure, and the middle skeleton chain section is poly epsilon-caprolactone molecular structure. The preparation method comprises the following steps: 1) adding (methyl)hydroxethyl acrylate, epsilon-caprolactone, a catalyst and a polymerization inhibitor in a reaction bottle, stirring and reacting at 140-180 DEG.C for 2-8 hours; 2) cooling to 80 DEG.C or above, adding anhydride, uniformly stirring, heating up to 120-140 DEG.C, keeping temperature for 2-6 hours; 3) cooling to 40-60 DEG.C and filtering to prepare the product. The adhesion promoter disclosed by the invention has the characteristic that the poly epsilon-caprolactone skeleton chain section is additionally added to the adhesion promoter in comparison with the conventional radiation curable coating adhesion promoter; and the preparation process is simple and molecular chain section and the molecular weight are strong in controllability.

Description

technical field [0001] The invention relates to a radiation-cured paint adhesion promoter and a preparation method thereof, belonging to the technical field of radiation-cured paint. Background technique [0002] The mainstream radiation curing methods at home and abroad include ultraviolet (UV) curing and electron beam (EB) curing, while radiation curing coatings are mainly acrylate resin formulation systems with free radical polymerization mechanism. Due to the characteristics of energy saving, environmental protection, safety, high efficiency and strong adaptability, radiation curing coatings are widely used in the packaging and printing of cigarettes, alcohol, food, daily chemicals, gifts, handicrafts, electronic products, etc., among which paper products (including vacuum Aluminum-coated paper) has the largest usage of radiation-cured coatings, and it is increasing year by year. [0003] With the research on the development and application of radiation-cured coatings, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C08G63/91C08G63/08C07C69/67C07C67/08C09D175/14
Inventor 薛守成刘玉贞马红敏唐茂旭
Owner YANTAI BOYUAN TECH MATERIALS
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