Ultraviolet (UV) Curable Resins is a polymer that cures under ultraviolet light

Posted by Coherent Market insights on May 19th, 2022

To meet the rigorous laws in Europe and North America, as well as to reduce air pollution and energy consumption, a great variety of UV light curable resins have been created. Over the previous four decades, their use and appeal have increased dramatically. 1 UV induced cure has a number of advantages over conventional cure, including reduced energy consumption and equipment space, reduced waste, reduced emissions, increased productivity (rapid cure), and lower temperature treatment. Furthermore, Ultraviolet (UV) curable resinsdo not often include any organic solvents that are harmful to the environment. The fundamental drawback of light-induced curing systems is their low light penetration depth, which varies depending on wavelength and spectral dispersion but seldom exceeds a few millimetres.

Acrylate modified urethanes are one of the most significant UV curable polymers. Low molecular weight polyester or polyether diols are often prepolymers of this class, and they are formed by reacting them with an excess of aliphatic or aromatic diisocyanates. The residual diisocyanate functions are then capped with an acrylic monomer such hydroxyalkyl acrylate to form acrylic functionalized urethane. To lower the viscosity of the prepolymer, reactive diluents with one or more vinyl groups are frequently used. UV radiation is subsequently used to cross-link the prepolymers in a free radical polymerization.

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