| abstract |
The present invention relates to a prepolymer of formula (I), a process for producing the prepolymer, a photocurable composition comprising the prepolymer of formula (I) and its use in a photopolymerized 3D printing process. In contrast to conventional urethane (meth) acrylates, the prepolymers of formula (I) can be prepared without the use of toxic isocyanates and have pendant hydroxyl groups along their molecular backbone, which allows the introduction of other side chains or side groups to, for example, improve the interaction with inorganic fillers. |