This invention discloses a polyfunctional
acrylate monomer with adjustable functionality and its preparation method, belonging to the field of
fine chemical and
polymer materials technology. Using
bisphenol A di(2,3-dihydroxypropyl)
ether as a starting material, the invention involves esterification with an unsaturated
carboxylic acid containing double bonds under the action of a catalyst to obtain a polyfunctional
acrylate monomer with an average
degree of substitution of 2โ4. By adjusting the acid / hydroxyl
molar ratio,
reaction temperature, time, and catalyst type, the average
degree of substitution of the product can be flexibly controlled within the range of 2โ4. Compared with the existing
bisphenol A
diglycidyl ether-acid ring-opening esterification
route, this invention introduces multiple polymerizable double bonds into the molecule through esterification, significantly improving the
double bond functionality of the product. The obtained
monomer has advantages such as adjustable functionality, low
viscosity, and environmental friendliness, making it suitable for industrial production and applicable to a wide range of fields including
dental composite resins, UV-curable coatings, 3D printing materials, and photocurable adhesives.