Low Cost Aromatic Acetylene and Oligomeric Benzils and Their Conversion to Acetylene Terminated Quinoxalines
Abstract
A novel oligormeric acetylene terminated quinoxaline composition was prepared in a five step reaction sequence starting from m-dibromobenzene and acetylene. The new material showed a Tg of about 65 degrees. Removal of catalytic amounts of palladium and copper used in the preparation was found to be very difficult. A 50 gram sample of the new resin was prepared and submitted to AFWAL/MLBP for evaluation. Research efforts to catalytically replace chlorine atoms in chloroaromatics by acetylene groups were unsuccessful. A study was made of the effect of temperature and pressure on the preparation of 4,4'-bis(3- bromophenoxyl)phenylsulfone.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1982
- Accession Number
- ADA119808
Entities
People
- E. T. Sabourin
Organizations
- Wright Laboratory