Unlock instant, AI-driven research and patent intelligence for your innovation.

Oligomer synthesis method adopting preferable dosage of phthalic anhydride

A technology of phthalic anhydride and a synthesis method, applied in the field of light curing, can solve the problems of reducing curing speed, film shrinkage, high toxicity, etc., and achieves the effects of fast curing speed, improved waterproofness, and low film shrinkage rate

Inactive Publication Date: 2015-12-23
任杰
View PDF1 Cites 0 Cited by
  • 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

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oligomer synthesis method adopting preferable dosage of phthalic anhydride
  • Oligomer synthesis method adopting preferable dosage of phthalic anhydride
  • Oligomer synthesis method adopting preferable dosage of phthalic anhydride

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 , heated to 80°C, after the reaction was completed, separated and purified by precipitation, and 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 epoxy acrylate and add them to 10...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an oligomer synthesis method with a preferable dosage of phthalic anhydride. The method comprises the following steps: carrying out a ring opening polymerization reaction on phthalic anhydride and epoxy butanol to synthesize hyper-branched polyester, carrying out a polymerization reaction on fluorinated acrylate and epoxy acrylate to synthesize fluorinated epoxy acrylate, and grafting and modifying the synthesized hyper-branched polyester with the fluorinated epoxy acrylate to prepare a cationic light-curing hyper-branched fluorinated polyacrylate oligomer. The oligomer has the advantages of fast curing speed, low film forming shrinkage and improvement of the water resistance and the adhesion of light curing coatings, and is mainly used in the field of light curing.

Description

technical field [0001] The invention relates to the field of photocuring, in particular to a method for synthesizing oligomers with a preferred dosage of phthalic anhydride. 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; (3) the waterproofness...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G81/02C09D187/00
Inventor 任杰
Owner 任杰