Epoxidation of linseed oil-Alkyd resins

Abstract:
Three types of different linseed oil-alkyd resin ( Alk (I), Alk (II), and Alk
(III) ) were prepared with the calculated amounts of monoglyceride and adipic
acid (1:1, 1:2, and 2:1 Eq.Wt) respectively via monoglyceride method. The
obtained alkyd resins were epoxidized via reaction with the calculated quantities
of peracetic acid, which was prepared by the reaction of acetic anhydride with
H2O2. Epoxidation occurred with the ratio (1:1, 1:3, and 1:6 Eq.Wt) of alkyd to
peracetic acid. The effect of reaction time on the epoxy group content was
measured during the epoxidation process. The prepared alkyd resins were
analyzed by IR and H1NMR. The metal coated film properties of epoxidized
alkyd resins were compared with those of unmodified alkyd resins. It was
observed that the coating films of epoxidized alkyd resins have better in drying
properties, hardness, adhesion, impact and flexibility than those of
unepoxidized alkyd resins. The flammability properties of the paper coated films
for the prepared brominated epoxidized alkyd resins were found to be fire
retardant.

Epoxidation of linseed oil-Alkyd resins.