Several new bis (1,2-dicarbonyl) compounds containing benzofuran or benzothiophene ring have been synthesized and identified by elemental analysis and Infra red spectroscopy.

The surface modification results were analysed by the methods of the specific surface area measurement and infra red absorption spectroscopy, and the best conditions for modification were obtained.

The chemical change of four resole type phenol-formaldehyde resins in curing process was studied by infra-red spectroscopy.