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Ultraviolet photocuring coating containing inorganic pigment and filler and preparation method thereof

A technology for curing coatings and pigments and fillers, applied in the coating field, can solve problems such as poor toughness, achieve the effects of enhancing hardness and gloss, increasing flexibility, and reducing system viscosity

Active Publication Date: 2015-06-10
JIANGSU LANLING POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the defect of poor toughness of existing UV-curable coatings modified by hyperbranched polyester, and at the same time, after adding a large amount of inorganic pigments and fillers into the coating, it still meets the requirements of photo-curing and coating performance. Provided is a UV-curable coating containing inorganic pigments and fillers for colored coils and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take 10 g of polyethylene glycol (Mn=200), vacuum dehydrate at 105°C for 1.5 hours, and cool down to 50°C for later use.

[0025] (2) Add 25.02g of MDI, 0.4g of hydroquinone and 13g of butyl acetate into a device equipped with a stirring device, a temperature control system, a nitrogen gas introduction and a condensation system, mix well and heat up to 50°C, and slowly Add dropwise the polyethylene glycol treated in (1) above, and react for 50 minutes; keep the temperature of the system constant, add 6.8 g of hydroxyethyl methacrylate solution containing 0.4 g of dibutyltin dilaurate to the device dropwise, and then heat up to 55°C and react for 1 hour to obtain a semi-addition polymer of urethane acrylate.

[0026] (3) Mix the synthesized semi-addition polymer with 5.7g of the fourth-generation hyperbranched polyester BH40 and 0.2g of dibutyltin dilaurate, raise the temperature to 63°C, and react for 1 hour to obtain hyperbranched modified polyurethane Acrylate. ...

Embodiment 2

[0028] (1) Weigh 25 g of polypropylene glycol (Mn=1000) in a beaker, place it in a vacuum environment at 100° C. for 2 hours, and cool it down to 45° C. for later use.

[0029] (2) Add 12.51g of MDI and 15g of butyl acetate into a device equipped with a stirring device, a temperature control system, a nitrogen gas introduction and a condensation system, mix well and heat up to 45°C, and slowly and dropwise add the above (1) Treated polypropylene glycol was reacted for 1 hour; the temperature of the system was kept constant, and a mixed solution containing 0.2g hydroquinone, 0.15g dibutyltin dilaurate and 2.9g hydroxyethyl acrylate was dripped into the device under stirring, and then Raise the temperature to 55°C and react for 1 hour to form a semi-addition oligomer of urethane acrylate.

[0030] (3) Mix the synthesized semi-addition polymer with 2.85g of the fourth-generation hyperbranched polyester BH40 and 0.1g of dibutyltin dilaurate, raise the temperature to 62°C, and reac...

Embodiment 3

[0032] (1) Measure 50 g of polypropylene glycol (Mn=1000) in a beaker, place it at 100° C. for vacuum dehydration for 2 hours, and cool it down to 50° C. for use.

[0033] (2) Add 17.42g of toluene diisocyanate, 0.2g of hydroquinone and 20g of butyl acetate into a device equipped with a stirring device, a temperature control system, a nitrogen gas introduction and a condensation system, mix well and heat up to 50°C, and stir Slowly add the standby polypropylene glycol in the above (1) dropwise, and react for 40 minutes; then add dropwise a solution containing 0.2 dibutyltin dilaurate and 6.5 g hydroxypropyl acrylate to the device, then heat up to 55 ° C, and react for 1 hour to prepare Obtain polyurethane acrylate semi-addition substances.

[0034] (3) Mix the synthesized semi-addition substance with 5.7 g of BH40 and 0.1 g of dibutyltin dilaurate, raise the temperature to 65° C., and react for 1 hour to obtain a modified polyurethane acrylate oligomer.

[0035] Preparation o...

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PUM

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Abstract

The invention belongs to the field of coatings, and provides an ultraviolet photocuring coating containing inorganic pigment and filler. The ultraviolet photocuring coating comprises the following formulas in percent by mass: 40-70 percent of modified hyperbranched polyurethane acrylates, 2-5 percent of isocyanuric acid glycidyl ester, 3-5 percent of tert-butyl acrylate, 2-5 percent of octadecyl acrylate, 3-31 percent of acrylate-hydroxy ester, 1-2 percent of photoinitiators, 2-7 percent of auxiliaries and 9-13 percent of pigment and filler. A preparation method of the ultraviolet photocuring coating containing inorganic pigment and filler comprises the following steps that the reaction on long chain dihydric alcohol and an excessive amount of diisocyanate is carried out to synthesize a polymer I of an isocyanate group sealing side; the reaction on a certain amount of acrylate-hydroxy ester and the polymer I is carried out to synthesize a semi-additive substance Ii of which one end is isocyanate and the other end is double bond; hyperbranched polyester reaction on the semi-additive substance II and a fourth generation of BH40 is carried out. The ultraviolet photocuring coating containing inorganic pigment and filler has the advantages of high flexibility of coatings, high hardness and glossiness and capability of meeting the photocuring requirement on color film coatings used in the industry.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a modified polyurethane acrylate light-curing coating containing inorganic pigments and fillers and a preparation method thereof. Background technique [0002] With the development of light curing technology, light curing materials have been widely used in chemical industry, communication, electronics, light industry and other fields. UV-curable coatings have the advantages of low VOC emissions, high efficiency, energy saving, and environmental protection, and are receiving more and more attention in the fields of coatings and inks. [0003] UV-curable coating refers to a coating that can be cured rapidly under ultraviolet light, and generally consists of prepolymers, reactive diluent monomers, photoinitiators and additives. Prepolymers, mainly urethane acrylates, play a leading role in UV-curable products. Although light-curing coatings have many advantages over traditional coatings, t...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12C08G18/42C08G18/67C08G18/48C08G18/12
CPCC08G18/12C08G18/4018C08G18/672C09D7/61C09D175/14C08G18/48C08G18/42
Inventor 陈明铮马金刘棋周凤燕吴润泽庄建林王桂银
Owner JIANGSU LANLING POLYMER MATERIAL CO LTD
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