Síntese de resina alquídica via catálise enzimática: uma análise sobre o uso do t-butanol como solvente

Abstract

The present work sought to study the feasibility of producing alkyd resins via enzymatic catalysis during the alcoholysis step. In the standard industrial process, metallic catalysts are used, which are harmful to the environment during their extraction and disposal. Thus, this work seeks to replace them by enzymes of the lipase type (glycerol ester hydrolases E.C 3.1.1.3). It is known that a medium that favors the enzyme's action is necessary, due to its conformation and the intermolecular forces. Thus, it was also explored in the work the ideal amount of solvent t-butanol that best favors the action of the lipase for the production of the resin. It was observed that at 30% solvent over oil mass there is a significant conversion, since the tests of solubility in methanol and enzyme activity showed the best values. Finally, when a resin was reproduced with alcoholysis via enzymatic catalysis, the desired specifications were reached and a varnish was formulated, which is a product with quality equivalent to the commercial one.