Modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as preparation method thereof

A high-reactivity, tripentaerythritol technology, used in the preparation of organic compounds, the preparation of carbamic acid derivatives, chemical instruments and methods, etc., can solve the problems of hard cured film, poor dilution, high volume shrinkage, etc.

Active Publication Date: 2013-12-11
JIANGSU RUIYANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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

Method used

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  • Modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as preparation method thereof
  • Modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as preparation method thereof
  • Modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of cyclic 1,3 propanediol carbonate-type modified tripentaerythritol from tripentaerythritol and dimethyl carbonate:

[0058] Add (186 g, 0.5 mol) tripentaerythritol, (180 g, 3 mol) dimethyl carbonate and (0.56 g, 5 mmol) 1,4-diazabicyclo[2.2.2]octane DABCO into a 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 methyl ester was distilled out of the reaction bottle, and...

Embodiment 2

[0060] The cyclic 1,3 propanediol carbonate type modified tripentaerythritol and the diethanolamine reaction synthesis band tertiary amine modified tripentaerythritol polyol by embodiment 1:

[0061] Before cooling the reaction solution obtained in the flask of Example 1 to room temperature, (210g, 2mol) diethanolamine and 600ml cyclohexane were added, and under the action of electric stirring, the solution in the flask was slowly heated 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 subjected to point plate analysis, it is separated by silica gel column chromatography (n-hexane: ethyl acetate = 4:1), and the rest of the o...

Embodiment 3

[0063] The cyclic 1,3 propanediol carbonate type modified tripentaerythritol and the diisopropanolamine reaction synthesis band tertiary amine modified tripentaerythritol polyol by embodiment 1:

[0064]Before cooling the reaction solution obtained in the flask of Example 1 to room temperature, (266g, 2mol) diisopropanolamine and 600ml cyclohexane were added, and under the action of electric stirring, the solution in the flask was 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 with low viscosity, high reactivity and low volume shrinkage 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 th...

Claims

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Application Information

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