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Synthetic method of oligomer with optimized parameters

A synthesis method and technology for optimizing parameters, applied in the field of photocuring, can solve the problems of high toxicity, reduced curing speed, film shrinkage, etc., and achieve the effects of low film shrinkage, fast curing speed, and improved waterproofness

Inactive Publication Date: 2015-12-02
任杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The oligomers of traditional photocurable coatings have the following deficiencies: (1) when the oligomers of traditional photocurable coatings are used, a large amount of multifunctional monomers need to be added as diluents. The use of a large amount of diluents will not only reduce the curing speed, And it will lead to serious shrinkage of the film; (2) The diluent itself has the disadvantages of being volatile and highly toxic; (3) The waterproofness and adhesion of traditional light-curing coatings need to be improved

Method used

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  • Synthetic method of oligomer with optimized parameters
  • Synthetic method of oligomer with optimized parameters
  • Synthetic method of oligomer with optimized parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Experiments on the effect of different hyperbranched polyester dosages on the shrinkage of light-cured films:

[0019] (1) Weigh 0.02mol of phthalic anhydride (PA) into 50ml of DMF, raise the temperature to 80°C, dissolve into a homogeneous phase, weigh 0.01mol of epoxybutanol and slowly drop into the system , adjusting the pH value to 5, after the reaction is completed, after separation and purification by precipitation, drying in a vacuum oven at 55°C to obtain a hyperbranched polyester;

[0020] (2) Weigh 0.016mol of trifluorooctyl acrylate (PFOA) and 0.032mol of glycidyl methacrylate (GMA) into 100ml of 1.4-dioxane solution, using nitrile as the initiator , the temperature was raised to 80°C, after the reaction was completed, after separation and purification by precipitation, it was dried in a vacuum oven at 55°C to obtain fluorine-containing epoxy acrylate;

[0021] (3) Weigh 0.009mol of fluorine-containing epoxy acrylate into 100ml of DMF solution, weigh 0, 0.01...

Embodiment 2

[0028] Experiments on the effect of different amounts of fluorine-containing epoxy acrylate on the water resistance of light-cured films:

[0029] (1) Weigh 0.02mol of phthalic anhydride (PA) into 50ml of DMF, raise the temperature to 80°C, dissolve into a homogeneous phase, weigh 0.01mol of epoxybutanol and slowly drop into the system , adjusting the pH value to 5, after the reaction is completed, after separation and purification by precipitation, drying in a vacuum oven at 55°C to obtain a hyperbranched polyester;

[0030] (2) Weigh 0.016mol of trifluorooctyl acrylate (PFOA) and 0.032mol of glycidyl methacrylate (GMA) into 100ml of 1.4-dioxane solution, using nitrile as the initiator , the temperature was raised to 80°C, after the reaction was completed, after separation and purification by precipitation, it was dried in a vacuum oven at 55°C to obtain fluorine-containing epoxy acrylate;

[0031] (3) Weigh 0.002mol, 0.005mol, 0.007mol, 0.009mol, 0.01mol fluorine-containing...

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Abstract

The invention discloses a synthetic method of an oligomer with optimized parameters. The method is characterized by synthesizing hyperbranched polyester through ring-opening polymerization reaction between phthalic anhydride and epoxy butanol, synthesizing fluorinated epoxy acrylate through polymerization reaction between fluorinated acrylate and epoxy acrylate and carrying out graft modification on synthesized hyperbranched polyester with fluorinated epoxy acrylate, thus preparing a cationic light-cured hyperbranched fluorinated polyacrylate oligomer. The synthetic method has the advantages of high curing speed, low film shrinkage ratio and capability of improving the waterproofness and adhesiveness of light curing coatings and is mainly applied to the field of light curing.

Description

technical field [0001] The invention relates to the field of photocuring, in particular to a method for synthesizing cationic photocuring hyperbranched fluorine-containing polyacrylate oligomers. Background technique [0002] Photocuring coatings refer to chemical reactions under high-energy ultraviolet radiation, rapid cross-linking and polymerization in the coating, and then curing to form a solid coating. Since the 1960s, photocurable coatings have achieved rapid development due to low VOA (volatile organic compound) emissions. [0003] The oligomers of traditional photocurable coatings have the following deficiencies: (1) when the oligomers of traditional photocurable coatings are used, a large amount of multifunctional monomers need to be added as diluents. The use of a large amount of diluents will not only reduce the curing speed, Moreover, it will lead to severe shrinkage of the film; (2) the diluent itself has disadvantages such as being volatile and highly toxic; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F220/22C08F220/32C09D187/00
Inventor 任杰
Owner 任杰