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Ultraviolet-curable cathode electrophoresis coating composition

A cathodic electrophoretic paint and composition technology, applied in electrophoretic paints, coatings and other directions, can solve the problems of failing to meet practical application requirements, poor paint film leveling effect, slow curing speed, etc., and achieve good storage stability and curing speed. Fast, high crosslinking density effect

Active Publication Date: 2014-11-19
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing UV-curable cathodic electrophoretic coating composition forms a film through electrophoresis, and the paint film has poor leveling effect, slow curing speed, and low crosslinking density.
Unable to meet practical application requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Preparation of UV-curable cathodic electrophoretic coating composition

[0016] Concrete preparation steps are as follows:

[0017] ① Preparation of dimethylaminoethyl methacrylate modified acrylic resin

[0018] In a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, add 60 g of propylene glycol methyl ether acetate, and at 100° C., dropwise add 15 g (accounting for 14w%) dimethylaminoethyl methacrylate, 18 g ( Accounting for 17w%) hydroxyl-containing (meth)acrylate monomer ((meth)acrylic acid-2-hydroxypropyl ester), other acrylate monomer 74g (accounting for 69w%, including 24g methyl methacrylate, 30g isobornyl methacrylate, 20g butyl methacrylate) and the mixture of azobisisobutyrocyanide (3.21g) of monomer total amount 3wt% are formed dropwise in 3 hours, and the insulation reaction is 3 hours to make the single The volume conversion rate reaches more than 98%, and the dimethylaminoethyl methacrylate modified acrylic resin...

Embodiment 2

[0025] Example 2 Preparation of UV-curable cathodic electrophoretic coating composition

[0026] With photoinitiator α-dimethoxy-α-phenylacetophenone 1.5g and diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide 1.5g, replace embodiment 1 step 4. 0.6 g of photoinitiators 1-hydroxycyclohexanebenzophenone and 2.4 g of 2-hydroxy-2-methyl-1-phenylacetone were used, and the remaining dosage and specific preparation steps were the same as in Example 1.

Embodiment 3

[0027] Example 3 Preparation of UV-curable cathodic electrophoretic coating composition

[0028] With optically active compound pentaerythritol tetraacrylate 3g and optically active oligomer epoxy acrylate (ETERNAL6215) 12g, replace the optically active compound difunctional acrylate (1,6 - hexanediol diacrylate) 5g and optically active oligomer aliphatic urethane acrylate (EBECRYL8602) 10g, the remaining dosage and specific preparation steps are the same as in Example 1.

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PUM

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Abstract

The invention relates to an ultraviolet-curable cathode electrophoresis coating composition. The ultraviolet-curable cathode electrophoresis coating composition is a mixture of cationized resin with polymerization activity, a photoinitiator, a compound with optical activity and an oligomer with optical activity. By taking the using amount of 100g of the cationized resin with polymerization activity as the standard, the using amount of the photoinitiator is 1-5wt% of the using amount of the resin, the total using amount of the compound with optical activity and the oligomer is 10-20wt% of the using amount of the resin and the weight ratio of the compound with optical activity to the oligomer with optical activity is 1: (2-4); the compound with optical activity is one or more of styrene, monofunctional acrylate and multifunctional acrylate; the oligomer is one or more of epoxy acrylate, aliphatic urethane acrylate, melamine acrylate, polyester acrylate, polyether acrylate, silicone acrylate, polyester resin and special acrylate. An electrophoresis working solution prepared from the composition can be stably stored and a coated film has good leveling property, fast curing and high hardness.

Description

technical field [0001] The invention relates to an ultraviolet light curing cathodic electrophoretic coating composition. Background technique [0002] UV-curable cathodic electrophoretic coatings are beneficial to environmental protection, energy-saving and fast curing. They meet the development requirements of the times and have a very broad application prospect. Since ultraviolet curing electrophoretic coating does not require high temperature and the curing speed is fast, it is especially suitable for coating processing of some temperature-sensitive materials. However, the existing UV-curable cathodic electrophoretic paint composition forms a film through electrophoresis, and the paint film has poor leveling effect, slow curing speed and low crosslinking density. Unable to meet practical application requirements. Contents of the invention [0003] The object of the present invention is: provide a kind of ultraviolet curing cathodic electrophoretic coating composition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D5/44
Inventor 陈兴兰陈卫东顾丽萍凌晓飞周志成
Owner CHINA NAT OFFSHORE OIL CORP
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