Preparation method of novel ultraviolet light curing powder coating resin

A powder coating and ultraviolet light technology, applied in powder coatings, polyester coatings, coatings, etc., can solve problems such as corrosion of instruments, production of by-products, environmental pollution, etc., achieving fast curing speed, less by-products, and good flexibility Effect

Active Publication Date: 2016-06-15
WUXI HIT SAINT OPTOELECTRONICS MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of such catalysts tends to corrode instruments, pollute the environment and produce by-products

Method used

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  • Preparation method of novel ultraviolet light curing powder coating resin
  • Preparation method of novel ultraviolet light curing powder coating resin
  • Preparation method of novel ultraviolet light curing powder coating resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 73g of adipic acid, 15.17g of sebacic acid, 74.84g of 1,4-cyclohexanedimethanol and 3.72g of pentaerythritol and add them to a four-necked flask equipped with a stirrer, a condenser tube, an inert gas inlet tube and a thermometer. Inject nitrogen for 15 minutes; vacuumize to 0.08MPa, heat to 100°C until the reactants are completely dissolved; heat up to 170°C and start stirring, react for 10h to obtain saturated polyester. Stop vacuuming and lower the temperature to 100°C; add 3.2g of tetraethylammonium chloride, melt it completely at 110°C, cool down to 90°C, and dissolve 0.16g of hydroquinone and 0.64g of antioxidant 1010 in 15g Add glycidyl methacrylate dropwise into the reactor, and the dropping time is controlled at 0.5h. After the dropping, raise the temperature to 130°C and react for 3h until the acid value does not change any more. Cool down and discharge the material to obtain a UV curable resin. .

[0047] The technical parameters of the obtained UV cur...

Embodiment 2

[0049]Weigh 59g of succinic acid and 36g of neopentyl glycol and ethylene glycol in a molar ratio of 1:2, add them to the reactor and mix them, blow in nitrogen for 15 minutes, then evacuate to 0.07MPa, heat to 180°C, and start stirring , reacted for 6 hours, until no more moisture was produced, stop vacuuming and blow nitrogen, and lower the temperature to 100°C. Add 3.32g of tetraethylammonium chloride, melt at 100°C, then cool down to 90°C, dissolve 0.17g of hydroquinone and nitroxide free radical piperidinol in 71g and 0.51g of antioxidant 164 The glycidyl methacrylate is added dropwise into the reactor at about 0.5h, after the dropwise addition is completed, the temperature is raised to 110°C for 1.8h, then the temperature is raised to 130°C, and the reaction is continued for 2h, the temperature is cooled and the material is discharged, and the ultraviolet light is obtained. Cured resin.

[0050] The technical parameters of the obtained UV-curable resin are as follows: (...

Embodiment 3

[0052] Weigh 26g of malonic acid and 20.7g of glycerol and add them into the reactor to mix them, pass through helium for 15min, evacuate to 0.06MPa, heat to 100°C until the reactants are basically dissolved, start stirring; heat up to 200°C, React for 12 hours, until there is no more moisture, stop vacuuming; pass helium, cool down to 90°C, add 5g of tetrabutylammonium bromide, after the solid melts, dissolve 53g of methyl ether with 0.2g of p-hydroxyanisole Glycidyl acrylate was added dropwise into the four-necked flask in about 1 hour, and after the dropwise addition was completed, the temperature was raised to 140°C to continue the reaction for 3 hours until the acid value of the system no longer changed, and the reaction was stopped; the temperature was lowered and the material was discharged to obtain UV curing resin.

[0053] The technical parameters of the obtained UV curable resin are as follows: (1) appearance is a white solid; (2) acid value is 1.6mgKOH / g; (3) numbe...

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Abstract

The invention discloses a preparation method of novel ultraviolet light curing powder coating resin. Polyhydric alcohol and / or dihydric alcohol and binary acid react according to the mole ratio of (0.8-1.2):1 to obtain saturated polyester, and saturated polyester and glycidyl methacrylate (GMA) react according to the mole ratio of 1:(2-5) to prepare ultraviolet light curing resin. The powder resin has excellent performance of rapid curing speed, low contraction percentage, high flexibility, corrosion resistance, impact resistance and the like, and is an environment-friendly, energy-saving, economical and efficient resin product.

Description

technical field [0001] The invention relates to a method for preparing a resin, in particular to a method for preparing a novel resin for ultraviolet curing powder coatings. Background technique [0002] UV curing powder coating is a new technology that combines traditional powder coating and UV curing technology. Compared with traditional powder coatings, UV-curable powder coatings have lower melting and leveling temperature, short curing time, no active diluent, low film shrinkage, high adhesion to substrates, good flexibility and scratch resistance Good sex and other characteristics. [0003] The main thing that determines the performance of UV-curable powder coatings is its main resin. Dendritic or hyperbranched polymers, which have attracted much attention in recent years, are a new class of highly branched synthetic polymers with three-dimensional structures. Unlike linear polymers, they have structural characteristics such as high functionality, spherically symmetr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/20C08G63/16C08G63/12C08G63/127C08G63/183C09D167/07C09D5/03C09J167/07
CPCC08G63/12C08G63/127C08G63/16C08G63/183C08G63/20C08G63/914C08G63/916C08G2150/20C09D5/03C09D167/07C09J167/07
Inventor 杨恺李现松陈君傅泽恒
Owner WUXI HIT SAINT OPTOELECTRONICS MATERIAL TECH CO LTD
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