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Aqueous ultraviolet cured paint

A technology for curing coatings and ultraviolet light, which is applied in coatings, latex paints, etc., can solve the problems that the film performance of water-based UV-curing coatings is difficult to achieve, and achieve the effect of saving petrochemical raw materials and realizing water-based

Active Publication Date: 2009-04-22
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating film performance of water-based UV-curable coatings is still not easy to reach the level of non-water-based UV-curable coatings, which delays the process of water-based coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 50g of propylene glycol methyl ether solvent in the reaction vessel with stirrer, condenser, thermometer, and dropping device, after warming up to reflux, dropwise add 5g of acrylic acid, 6g of glycidyl acrylate, 20g of butyl acrylate, 10g A mixture of styrene, 8.5g of methyl methacrylate, five compounds containing ethylenically unsaturated double bonds and 0.5g of benzoyl peroxide initiator is incubated for at least 6 hours to complete a copolymerization, forming a functional group containing further reactions (glycidyl ester group) primary polymer, after cooling down to remove residual free radicals, then add 5g of acrylic acid and heat up to 80-90°C to make the acrylic acid and the glycidyl ester group of the primary polymer react for secondary copolymerization, and continue to keep warm for 4 After one hour, cool down to 40°C, add 2.5 g of 17% ammonia water for neutralization, and obtain an emulsifying active oligomer A-1 with a molecular weight of 15,000 to 25,0...

Embodiment 2

[0019] Add 50g of propylene glycol methyl ether solvent into the reaction vessel with stirrer, condenser, thermometer and dropping device, after heating up to reflux, dropwise add 10g of acrylic acid, 20g of butyl acrylate, 10g of isooctyl acrylate, 8.5g of methyl A mixture of four ethylenically unsaturated double bond-containing compounds of butyl acrylate and 0.5g of benzoyl peroxide initiator and heat preservation reaction for at least 6 hours to complete a copolymerization to form a primary polymerization containing functional groups (carboxyl groups) that can be further reacted After cooling down to remove residual free radicals, add 6g of tertiary glycidyl acrylate and raise the temperature to 80-90°C to make secondary copolymerization between glycidyl acrylate and part of the carboxyl groups of the primary polymer, and keep warm for 4 hours After cooling down to 40°C, add 2.5g of 17% ammonia water for neutralization to obtain emulsifying active oligomer A-2 with a molecu...

Embodiment 3

[0021] Add 25g of isopropanol and 25g of butanol into the reaction vessel with stirrer, condenser, thermometer, and dropping device. Butyl ester, 10g styrene, 8.5g butyl methacrylate, five kinds of ethylenically unsaturated double bond-containing compounds and 0.5g benzoyl peroxide initiator form a mixture and heat preservation reaction for at least 6 hours to complete a copolymerization to form a The primary polymer of the functional group (methylol amide group) that is further reacted, after cooling down to remove the residual free radicals, then add 5g of hydroxypropyl acrylate and heat up to 80-90°C to make the hydroxypropyl acrylate and the methylol of the primary polymer Carry out the secondary copolymerization by reaction of amide groups, continue to keep warm for 4 hours, then lower the temperature to 40°C, add 2.5g of 17% ammonia water for neutralization, and obtain the active oligomer A-3 with emulsifying effect, its molecular weight is 15000~ 25000, output, storage,...

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PUM

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Abstract

The invention relates to an aqueous ultraviolet light curing paint which consists of the following compositions in weight percentage: 25.0 to 60.0 percent of acrylate active oligomer, 1.0 to 10.0 percent of active oligomer with emulsification, 0 to 15.0 percent of latent solvent, 0.5 to 6.0 percent of light evocating agent, 0.1 to 2.0 percent of additive and 12.0 to 68.4 percent of water. The active oligomer with emulsification is an acrylate aqueous copolymer with 5,000 to 50,000 molecular weights; and at least two compounds containing olefinic unsaturated double bond and an evocating agent are used as initial materials, are subjected to copolymerization twice, are neutralized through a neutralizing agent to prepare the aqueous ultraviolet light curing paint. The active oligomer with emulsification in proper amount can emulsify a non-aqueous active oligomer, thereby realizing water solubility of the ultraviolet light curing paint; and the film coating performance of the aqueous ultraviolet light curing paint is basically equivalent to that of the non-aqueous ultraviolet light curing paint.

Description

technical field [0001] The invention relates to a water-based ultraviolet light curing coating. Background technique [0002] UV-curable coatings are environmentally friendly and energy-saving, so they have received widespread attention worldwide, and their usage has also grown rapidly. However, the existing UV-curable coatings are non-aqueous, and the flammability and explosion levels of the coatings are high, and the safety during use is poor; in addition, it is necessary to use reactive diluents to adjust the viscosity of reactive oligomers, and these reactive diluents generally It is an acrylic ester compound, which can cause certain irritation and allergies to the human body, and is also unfavorable to the environment. , The wet film sagging phenomenon caused by the hard volatilization of the active diluent will also affect the workability of the coating. In recent years, with the soaring prices of petrochemical raw materials in the world and the non-renewability of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D5/02
Inventor 王坚沈雪锋顾斌
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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