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A kind of modified tripentaerythritol acrylate and preparation method thereof

A tripentaerythritol and acrylate technology is applied in the preparation of carbamate derivatives, chemical instruments and methods, preparation of organic compounds, etc., and can solve the problems of affecting adhesion, volatile migration of products, and poor flexibility.

Active Publication Date: 2015-11-18
JIANGSU RUIYANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the higher viscosity makes this type of resin used in UV-curable coatings, it is necessary to add low molecular weight reactive diluents with relatively small viscosity to reduce the viscosity of the coating composition to a viscosity of not more than 4Pa.s and preferably not more than 2.5 Viscosity of Pa.s at room temperature. Although low molecular weight reactive diluents have low viscosity and good dilution effect, most of them have low vapor pressure, toxicity and irritation, and will remain in the product after the light is over, causing adverse effects on the environment and human health. impact, and the cost is high, the operation is complicated, and the obtained product is easy to volatilize and migrate, and the loss is large
[0006] The common tripentaerythritol acrylate has the disadvantages of high viscosity, poor dilution, hard and brittle cured film, high volume shrinkage affecting adhesion, poor impact resistance (poor flexibility), and poor flexibility. There are great defects in product flexibility, flexibility, and the adsorption or viscosity of the product application substrate.

Method used

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  • A kind of modified tripentaerythritol acrylate and preparation method thereof
  • A kind of modified tripentaerythritol acrylate and preparation method thereof
  • A kind of modified tripentaerythritol acrylate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Preparation of cyclic 1,3 propanediol carbonate-type modified tripentaerythritol from tripentaerythritol and dimethyl carbonate:

[0051] (186g, 0.5mol) tripentaerythritol, (180g, 3mol) dimethyl carbonate and (0.56g, 5mmol) 1,4-diazabicyclo[2.2.2]octane DABCO were added to a tank equipped with electric stirring and water cooling In a 2000ml reaction flask with a reflux condenser, place the flask in a sand bath in an electric heating mantle, use a temperature controller connected to a thermocouple immersed in the sand bath to control the temperature of the sand bath, use the sand bath to heat the contents of the solution in the flask with stirring To 80 ℃, by stirring, the solid component of the solution substance in the flask dissolves into a colorless transparent solution, the reaction temperature is maintained at 80 ℃ and continues to stir for 16 hours, the reaction product methanol is continuously distilled out during the reaction, and the excess dicarbonate The meth...

Embodiment 2

[0053] The cyclic 1,3 propanediol carbonate type modified tripentaerythritol and the diethanolamine reaction synthesis band tertiary amine modified tripentaerythritol polyol by embodiment 1:

[0054] Before the reaction solution obtained in the flask of Example 1 was cooled to room temperature, (210g, 2mol) diethanolamine and 600ml cyclohexane were added, and under the action of electric stirring, the contents of the solution in the flask were slowly warmed up to 70°C, and the reaction temperature was maintained at 70°C. Continue to stir at ℃ for 3 hours, cool to room temperature after the reaction is completed, and perform multiple experiments at the same time under the same conditions as above. One of the obtained products is purified by ethanol and water precipitation, recrystallization, etc., and the reaction process and the end When the product solution is carried out spot plate analysis, adopt silica gel chromatography column separation (n-hexane: ethyl acetate=4:1), all ...

Embodiment 3

[0056] The cyclic 1,3 propanediol carbonate type modified tripentaerythritol and the diisopropanolamine reaction synthesis band tertiary amine modified tripentaerythritol polyol by embodiment 1:

[0057] Before the reaction solution obtained in the flask of Example 1 was cooled to room temperature, (266g, 2mol) diisopropanolamine and 600ml cyclohexane were added, and under the action of electric stirring, the contents of the solution in the flask were slowly warmed up to 70°C. Before the sample was spotted on a silica gel plate and the reaction process and the product solution at the end were spot plate analyzed, the reaction temperature was maintained at 70 ° C and continued to stir for 3 hours, and cooled to room temperature after the reaction was completed.

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Abstract

The invention discloses a modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as a preparation method thereof. The structural formula of the modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume is shown in specification. The modified tripentaerythritol acrylic ester has degree of functionality of 8-12, viscosity of 800-4000 m Pa.s and molecular weight of 1000-4000, and the modified tripentaerythritol acrylic ester also has very high reactivity, low viscosity, low migration of high molecular weight, high solidification efficiency, low volume shrinkage, excellent adhesive force, adjustable softness and adjustable flexibility. A prepared coating is good in impact resistance and strong in adhesive force. The preparation method is simple and easy to control, and the obtained product is high in purity and good in properties.

Description

technical field [0001] The invention relates to a modified tripentaerythritol acrylate and a preparation method thereof. Background technique [0002] Light curing technology has the advantages of fast curing, energy saving and time saving, low solvent release, low curing temperature, small equipment size, low investment, etc. Its application fields have developed from the initial wood coating to plastic decoration, metal parts coating, medical treatment, etc. Apparatus, electronic components, information recording media, photosensitive printing, plastic materials and optical fibers and other industrial production fields, it mainly appears in the form of UV coatings, UV inks, UV adhesives, etc. [0003] UV curing materials are composed of photosensitive prepolymers (oligomers), reactive diluent monomers, photoinitiators and various additives (pigments, fillers, defoamers, etc.). Prepolymer is the basic resin of the UV curing system, which occupies a large proportion in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C271/16C07C271/64C07C269/06C09D175/14C09D7/12
Inventor 李光照刘和清
Owner JIANGSU RUIYANG CHEM
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