UV (Ultraviolet) curable polyester as well as preparation method and application of UV curable polyester

A polyester and catalyst technology, applied in the field of fine chemical synthesis, can solve the problems of high price, high cost and complex process, and achieve the effects of strong corrosion resistance, excellent medium resistance and simple process
CN106748765AActive Publication Date: 2017-05-31SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-05-31

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Abstract

The invention discloses UV (Ultraviolet) curable polyester as well as a preparation method and application of the UV curable polyester. The preparation method of the UV curable polyester comprises the following steps: 1) mixing 1 part of triglycidyl ether and 3 to 4 parts of an acrylic monomer into a reaction kettle according to a mole fraction; adding a quaternary ammonium salt catalyst, a polymerization inhibitor and an organic solvent and reacting at 105 DEG C to 125 DEG C until the acid value is less than 10mgKOH / g; 2) adding acid anhydride, a polymerization inhibitor and p-toluenesulfonic acid into a matrix prepared by the step 1), and reacting at 105 DEG C to 130 DEG C for 2h to 4h; adding an epoxy compound which is 0.9 to 1.2 times of the mole fraction of the acid anhydride and adding the quaternary ammonium salt catalyst and the organic solvent to react until the acid value is less than 10mgKOH / g; decompressing and distilling to remove the solvent, and cooling and discharging a material, wherein the solid content of the resin reaches 100 percent or more and the viscosity is 3000mPa.s to 30000mPa.s. UV curable paint prepared by the polyester has excellent coating film performance and relatively low cost.
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Description

technical field

[0001] The invention relates to a polyester resin, in particular to a UV-curable polyester and its preparation method and application, belonging to the field of fine chemical synthesis. Background technique

[0002] The development trend of coatings is to develop environmentally friendly coatings, including high solids coatings, water-based coatings, powder coatings and UV curing coatings. UV curing coatings have the advantages of fast curing speed, energy saving, and excellent coating performance. Commonly used light-curing coatings include epoxy acrylate, polyurethane acrylate, polyester acrylate and polyacrylate. Among them, the coating prepared by epoxy acrylate has high viscosity, high brittleness and poor flexibility; polyurethane acrylate is expensive; The acrylate process is complicated; in the preparation process of polyester acrylate, it is first necessary to perform esterification reaction at 180-240°C to prepare hydroxyl polyester resin, and then...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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