Synthesis and Properties of Reactive Diluents for Acetylene Terminated Phenylquinoxaline Oligomers

摘要

Two reactive diluents, 1-phenoxy-3-(m-ethynylphenoxy) benzene and 1,3-bis-(m-ethynylphenoxy) benzene were synthesized to demonstrate the melt processability of acetylene terminated phenylquinoxaline oligomers. It was shown that tailoring the molecular structure of the diluent to resemble the structure of the oligomer results in a completely compatible system. The reactive diluent lowers the effective softening point of the oligomer, decreases the bulk viscosity during processing and then becomes dormant by co-reacting with the oligomer. (Author)