the invention relates to an acrylate monomer of formula 1 dtp - coo — n — o — co — ch ═ ch 2 wherein dtp is a diterpene group derived from a resin acid and n is a number from 2 – 4 as well as a process for the preparation thereof . the resin acid is in particular abietic acid or an isomer thereof . these monomers and the prepolymers and polymers derived therefrom can be used as biodegradable adhesives for materials such as metal , plastic , glass , paper and wood , in particular as construction adhesive .