Hyperbranched polyester urethane acrylate ultraviolet-cured coating and preparation method thereof

A technology of urethane acrylate and hyperbranched polyester, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problem of not fully satisfying the physical and chemical properties of coatings, and achieve the effects of excellent physical and chemical properties, high flexibility and low viscosity

Inactive Publication Date: 2014-08-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the above considerations, patents such as 200710043703.2, 200810027016.6, 201110000659.3, and 201210033065.7 proposed UV-curable coatings based on hyperbranched polyesters. The functional groups possessed by the polyester enable it to be further modified. The invention discloses a long-chain acid-modified hyperbranched polyester urethane acrylate UV-curable coating and a preparation method thereof. The coating can greatly improve the adhesion of the coating. Strong and flexible, it can be used as surface coating for tinplate, galvanized sheet, stainless steel sheet and other metal sheets

Method used

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  • Hyperbranched polyester urethane acrylate ultraviolet-cured coating and preparation method thereof
  • Hyperbranched polyester urethane acrylate ultraviolet-cured coating and preparation method thereof
  • Hyperbranched polyester urethane acrylate ultraviolet-cured coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1, the preparation of hyperbranched polyester

[0035] Add 13.4kg of trimethylolpropane and 0.4kg of p-toluenesulfonic acid to the reaction kettle equipped with a stirring device, a temperature control system, and nitrogen gas inlet and outlet pipes, raise the temperature to 70°C, and add 120.6kg of them in batches after melting Dimethylolpropionic acid, under the conditions of stirring and nitrogen gas to remove water, raise the reaction temperature of the system to 140 ° C, stop nitrogen gas after 6 hours of reaction, vacuumize, continue to react for 2 hours and then stop to prepare hyperbranched polyester .

[0036] Step 2, the preparation of the hyperbranched polyester modified by long-chain acid

[0037] Add the hyperbranched polyester that 118kg step 1 makes in the reactor that stirrer, temperature control system, nitrogen import and outlet pipe are housed, then slowly add 101.7kg oleic acid and 0.6kg p-toluenesulfonic acid mixed solution, be warming up to ...

Embodiment 2

[0046] Step 1, the preparation of hyperbranched polyester

[0047] Add 13.4kg of trimethylolpropane and 0.4kg of p-toluenesulfonic acid to the reaction kettle equipped with a stirring device, a temperature control system, and nitrogen gas inlet and outlet pipes, raise the temperature to 70°C, and add 40.2kg of them in batches after melting Dimethylol propionic acid, under the conditions of stirring and nitrogen gas to remove water, raise the reaction temperature of the system to 120 ° C, stop nitrogen gas after 9 hours of reaction, vacuumize, continue to react for 3 hours and then stop to prepare hyperbranched polyester .

[0048] Step 2, the preparation of the hyperbranched polyester modified by long-chain acid

[0049] Add the hyperbranched polyester that 51kg step one makes in the reactor that stirrer, temperature control system, nitrogen gas import and export pipe are housed, then slowly add 22kg undecylenic acid and 0.2kg p-toluenesulfonic acid to it and mix liquid, hea...

Embodiment 3

[0058] Step 1, the preparation of hyperbranched polyester

[0059] Add 13.4kg of trimethylolpropane and 1.1kg of p-toluenesulfonic acid to the reaction kettle equipped with a stirring device, a temperature control system, and nitrogen gas inlet and outlet pipes, raise the temperature to 70°C, and add 361.8kg in batches after melting Dimethylolpropionic acid, under the condition of stirring and nitrogen gas to remove water, raise the reaction temperature of the system to 160 ° C, stop nitrogen gas after 4 hours of reaction, vacuumize, continue to react for 1 hour and then stop to prepare hyperbranched polyester .

[0060] Step 2, the preparation of the hyperbranched polyester modified by long-chain acid

[0061] Add the hyperbranched polyester that 337kg step 1 makes in the reactor that stirrer, temperature control system, nitrogen import and outlet pipe are housed, then slowly add 273kg oleic acid and 1.8kg p-toluenesulfonic acid mixed solution to it, heat up To 190° C., rea...

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PUM

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Abstract

The invention discloses a modified hyperbranched polyester urethane acrylate ultraviolet-cured coating. The coating comprises the following chemical components in percentage by weight: 40 to 85% of modified hyperbranched polyester urethane acrylate, 10 to 55% of active monomer diluents, 0.5 to 5% of photoinitiator, 0.1 to 2% of flatting agent, and 0.1 to 5% of adhesion promoter; all raw materials account for 100% in percentage by weight; and the modified hyperbranched polyester urethane acrylate is long-chain-acid modified hyperbranched polyester urethane acrylate. The invention also discloses a preparation method of the modified hyperbranched polyester urethane acrylate ultraviolet-cured coating. The coating has the characteristics of being low in viscosity, high in flexibility, high in adhesive force, etc.

Description

technical field [0001] The invention relates to a modified hyperbranched polyester polyurethane acrylate ultraviolet light curing coating and a preparation method thereof, in particular to a long-chain acid modified hyperbranched polyester polyurethane acrylate ultraviolet light curing coating and a preparation method thereof. Background technique [0002] UV-curable coating refers to a coating that can be cured under ultraviolet light, and its main components include photosensitive resin, reactive monomer diluent, photoinitiator and various additives. When the coating is irradiated by ultraviolet light, the photoinitiator generates free radicals or ionic groups, triggers the unsaturated double bonds of the photosensitive resin and reactive diluent to cause reactions such as polymerization, crosslinking and grafting reactions, so as to realize the coating solidify. [0003] UV curing coating technology is an environmentally friendly, energy-saving and efficient new technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12C08G18/67
Inventor 焦真王晨晨王献伟杨前前
Owner SOUTHEAST UNIV
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