Curing of para-tert-butylphenol formaldehyde epoxy-acrylic resin in the presence of reactive diluents

Para-tert-butylphenol formaldehyde epoxy-acrylic resin was synthesized star ting from para-tert-butylphenol formaldehyde resin in reaction with glycidy l acrylate. It was cured as such, or in the presence of reactive diluents b ased on glycidyl ethers of phenol, para-tert-butylphenol, as well as para-n onylphenol, respectively. The curing reaction was studied by the viscometry technique at temperatures in the range 60-90 degrees C. The curing starts with gelation and with resin measurable races only in the case of the resin diluted with both para-tert-butylphenol and para-nonylphenol epoxy-acrylic diluents. The analyzed samples heated on 110 degrees C, duration 16 h, sho w that the curing reaction depends very much on the structure of the reacti ve diluents.