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Ultraviolet curing coating composition and preparation method thereof

A technology for curing coatings and compositions, applied in the field of UV-curable coating compositions and their preparation, can solve problems such as difficulty in curing and surface defects of paint films, achieve excellent wetting performance, reduce friction coefficient, improve chemical inertness and internal Lubricity effect

Active Publication Date: 2012-12-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the technical problem that the high-covering UV-curable coating composition in the prior art is difficult to cure and completely leads to serious surface defects of the paint film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Add 500g of bisphenol A type epoxy resin E-12 with a relative molecular weight of 1400 to the four-necked flask, heat the oil bath to 90°C, stir, then add 0.51g of catalyst 2,2-dihydroxy to 12g of acrylic acid Methylbutyric acid and 0.15g of polymerization inhibitor 2,5-dimethylhydroquinone were added dropwise into a four-necked flask. After 3 hours of reaction, the acid value of the system was less than 3mgKOH / g, and epoxy acrylate monoester A1 was obtained. .

[0050] Weigh 60g photoinitiator (15g Cibar 184, 25g Cibar TPO, 20g UV1 6976 of Dow Chemical), and add it to 100g reactive diluting monomer HDDA, stir until dissolved at a stirring speed of 300r / min; then add 370g ring Oxyacrylate monoester A1, 250g EFOA and 15g wetting and dispersing agent BYK-9076 were stirred for 3min at a stirring speed of 300r / min. Finally, add 200g of pigment titanium dioxide, 3g of thixotropic agent BYK-430 and 2g of defoamer Foamex N, stir for 15min at a stirring speed of 500r / min, grin...

Embodiment 2

[0052] Add 500g of bisphenol A type epoxy resin E-12 with a relative molecular weight of 2000 to the four-necked flask, heat the oil bath to 90°C, stir, and then add 0.51g of catalyst 2,2-bis to 6.4g of acrylic acid Methylolbutyric acid and 0.15g of polymerization inhibitor 2,5-dimethylhydroquinone are then added dropwise into a four-necked flask, and the acid value of the system after 3 hours of reaction is less than 3mgKOH / g to obtain epoxy acrylate monoester A2.

[0053] Weigh 80g of photoinitiator (20g Cibar 184, 33g Cibar TPO, 27g UV1 6976 of Dow Chemical), and add it to 100g active diluent monomer TPGDA, and stir at a stirring speed of 300r / min until dissolved; then add 370g ring Oxyacrylate monoester A2, 250g EFOA and 15g wetting and dispersing agent BYK-9076 were stirred for 3 minutes at a stirring speed of 300r / min. Finally add 180g pigment iron oxide red, 3g thixotropic agent BYK-430 and 2g defoamer Foamex N, stir for 15min at a stirring speed of 500r / min, grind and...

Embodiment 3

[0055] Add 500g of bisphenol A type epoxy resin E-12 with a relative molecular mass of 9000 to the four-necked flask, heat the oil bath to 90°C, stir, and then add 15.31g of catalyst 2,2-bis to 10.3g of acrylic acid Methylolbutyric acid and 0.05g of polymerization inhibitor 2,5-dimethylhydroquinone are then added dropwise into a four-necked flask, and the acid value of the system after 3 hours of reaction is less than 3mgKOH / g to obtain epoxy acrylate monoester A3.

[0056] Weigh 40g photoinitiator (15g Cibar 184, 25g Cibar TPO), and add to 150g reactive diluting monomer HDDMA, stir until dissolved at a stirring speed of 300r / min; then add 550g epoxy acrylate monoester A3, 200g EFOA and 5g of wetting and dispersing agent TEGO WET KL 245 was stirred for 3min at a stirring speed of 300r / min. Finally, add 50g of pigment carbon black, 4g of thixotropic agent BYK-430 and 1g of defoamer Foamex N, stir for 15min at a stirring speed of 500r / min, grind and disperse on a three-roll mil...

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Abstract

The invention provides an ultraviolet curing coating composition, wherein the ultraviolet curing coating composition comprises the following components, by mass, 30-65 wt% of an epoxy acrylic acid monoester, 15-50 wt% of a fluorine-modified epoxy acrylate, 5-20 wt% of an active diluent monomer, 3-10 wt% of a photoinitiator, 2-40 wt% of a pigment, and 0.5-6 wt% of an additive. The invention further provides a preparation method for the ultraviolet curing coating composition. The ultraviolet curing coating composition of the present invention has the following advantages that: complete curing is easily achieved, and the formed coating after curing does not have shrinkage holes and shrinkage patterns, has a good wetting performance, and provides good adhesion for substrates.

Description

technical field [0001] The invention belongs to the field of coating compositions, and in particular relates to an ultraviolet light curing coating composition and a preparation method thereof. Background technique [0002] Ultraviolet curing (UV) coatings do not contain organic solvents, and have the advantages of environmental protection, energy saving and high efficiency. According to the curing mechanism, UV curing can be divided into free radical type and cationic type. The free radical type undergoes free radical copolymerization through the C=C double bond under ultraviolet light, while the cationic type generates positive ion active centers and undergoes ring opening after ultraviolet light. polymerization. [0003] At present, the UV-curable inks widely used in the printing field are mainly free radical inks, which have the advantages of fast curing, high gloss, and good weather resistance. Poor force, poor flexibility, large deformation of printed matter, difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10
Inventor 黄小萍李英卓崔静娜高贺宋本玲
Owner BYD CO LTD
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