Composite for ultraviolet ray curable cation electrodeposition coating and film thereof

A cationic electrodeposition and curing technology, applied in electrophoretic coatings and other directions, can solve the problems of poor stability of coatings over time, rising manufacturing costs, and good performance, and achieve the effects of stable coating film performance over time and good surface curability.

Active Publication Date: 2013-06-05
HONNY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the hydroxyl group of the base resin is reacted with a compound having an unsaturated group and an isocyanate group in one molecule synthesized by reacting a compound having an unsaturated bond and a hydroxyl group in one molecule with a diisocyanate, but the reaction procedure is complicated , In addition, isocyanate ethyl acrylate, a compound having an unsaturated group and an isocyanate group in one molecule, can also be used, but its manufacturing cost increases, and when it is used as an electrodeposition coating, the unsaturated group in the side chain and the The curing agent reacts to form agglomerates, so the stability of the paint over time is not good
[0013] As the above-mentioned ultraviolet curable cationic electrodeposition paint on the above-mentioned plastic plating material, it has not been possible to obtain a material that has good liquid stability over time, high sensitivity, and satisfies sufficient coating film performance.

Method used

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  • Composite for ultraviolet ray curable cation electrodeposition coating and film thereof
  • Composite for ultraviolet ray curable cation electrodeposition coating and film thereof

Examples

Experimental program
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Effect test

manufacture example 1

[0069] 10.0 parts of isopropanol and 10.0 parts of propylene glycol monomethyl ether were placed in a 3-liter four-neck flask equipped with a stirring device, a reflux condenser, and a nitrogen gas introduction pipe, and the temperature was raised to 90°C. In addition, 5 parts of isopropanol, 13 parts of propylene glycol monomethyl ether, 8 parts of diethylaminoethyl methacrylate, 10 parts of 2-hydroxyethyl acrylate, 10 parts of styrene, 20 parts of n-butyl acrylate, A mixture of 52 parts of methyl methacrylate, 1.5 parts of azobisisobutyronitrile, and 1 part of 2,4-diphenyl-4-methyl-1-pentene was put into the dropping funnel, and dropped over 120 minutes. Add to the aforementioned flask. After the dropwise addition, 0.4 parts of propylene glycol monomethyl ether and 0.2 parts of azobisisobutyronitrile were added three times every 30 minutes, and then the reaction was continued at 90° C. for 90 minutes. The copolymer thus obtained was a water-dispersible vinyl copolymer havin...

manufacture example 2

[0071] 10.0 parts of isopropanol and 10.0 parts of propylene glycol monomethyl ether were placed in a 3-liter four-neck flask equipped with a stirring device, a reflux condenser, and a nitrogen gas introduction pipe, and the temperature was raised to 90°C. In addition, 5 parts of isopropanol, 13 parts of propylene glycol monomethyl ether, 10 parts of diethylaminoethyl methacrylate, 10 parts of 2-hydroxyethyl acrylate, 10 parts of styrene, 20 parts of n-butyl acrylate, A mixture of 50 parts of methyl methacrylate, 1.5 parts of azobisisobutyronitrile, and 1 part of 2,4-diphenyl-4-methyl-1-pentene was put into the dropping funnel, and dropped over 120 minutes. into the aforementioned flask. After the dropwise addition, 0.4 parts of propylene glycol monomethyl ether and 0.2 parts of azobisisobutyronitrile were added three times every 30 minutes, and then the reaction was continued at 90° C. for 90 minutes. The copolymer thus obtained was a water-dispersible vinyl copolymer having...

manufacture example 3

[0073] 10.0 parts of isopropanol and 10.0 parts of propylene glycol monomethyl ether were placed in a 3-liter four-neck flask equipped with a stirring device, a reflux condenser, and a nitrogen gas introduction pipe, and the temperature was raised to 90°C. In addition, 5 parts of isopropanol, 13 parts of propylene glycol monomethyl ether, 10 parts of diethylaminoethyl methacrylate, 10 parts of 2-hydroxyethyl acrylate, 10 parts of styrene, 10 parts of 2-ethyl acrylate Hexyl ester, 20 parts of n-butyl acrylate, 40 parts of methyl methacrylate, 1.5 parts of azobisisobutyronitrile, 1 part of 2,4-diphenyl-4-methyl-1-pentene into the dropping funnel, and dropped into the aforementioned flask over 120 minutes. After the dropwise addition, 0.4 parts of propylene glycol monomethyl ether and 0.2 parts of azobisisobutyronitrile were added three times every 30 minutes, and then the reaction was continued at 90° C. for 90 minutes. The copolymer thus obtained was a water-dispersible vinyl ...

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Abstract

The present invention provides an ultraviolet curing type cation electrodeposition coating composition which has advantages of excellent liquid aging stability, high sensitivity, excellent surface curability, excellent adhering property, excellent corrosion resistance, excellent wearing resistance and excellent medicine resistance. The ultraviolet curing type cation electrodeposition coating composition comprises the following compositions: A: 50-80 parts of water-soluble or water-dispersion vinyl copolymer which is obtained through the copolymerization of components a to c and is provided with unsaturated group at the end of one part of principal chain, and the components a-c are described as follows: a: 4-15 parts of copolymerized vinyl monomer which has t-aminoalkyl, b: 85-96 parts of copolymerized vinyl monomer except for a, and c: 0.05-20 parts of addition cracking chain transfer agent relatively to total 100 parts of a and b, B: 20-50 parts of composition with more than three unsaturated groups in one molecule; and C: a photopolymerization initiating agent which has a dissolving amount lower than 0.02g to 100g of water containing 3% of alcohol dissolvent and has a molar absorptivity of maxium absorption of 10 in 200nm to 400nm, wherein 0.1-8 parts of photopolymerization initiating agent exist relatively to total 100 parts of a and b.

Description

technical field [0001] The present invention relates to an ultraviolet curing type that has good stability over time, high sensitivity, and imparts good surface curability, adhesion, corrosion resistance, weather resistance, and chemical resistance to thermally weak plating substrates. A composition for cationic electrodeposition paint, and a coating film obtained by using the composition. Background technique [0002] In recent years, since hexavalent chromium is restricted in chromium plating, chromium plating with trivalent chromium is being studied. However, the corrosion resistance of the chromium plating layer made of trivalent chromium is worse than that of the chromium plating layer made of hexavalent chromium, so it is necessary to improve the corrosion resistance by painting, and the electrodeposition coating with good corrosion resistance and painting efficiency The demand for equipment has increased. [0003] However, since the electrodeposition paint on the ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/44C08K5/01
Inventor 述金幸弘高曲贤治矢野泰广
Owner HONNY CHEM
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