SYNTHESIS AND EVALUATION OF BISBICYCLIC DIEPOXIDES
Abstract
Synthesis of bis 2-(bicyclo 2.2.1 heptane 5,6epoxy)-methyl oxide (diepoxide 262) was accomplished with difficul y. The interme iate ether was obtained by the Williamson ether synthesis route. Two major fractions of the diepoxide were cured with maleic anhydride and trimethylolethane to yield resins of similar properties. However, the resins obtained from this curing system were colored. Cure of 5,6-epoxybicyclo 2.2.2 octane2-met yl 5',6 -epoxybicyclo 2.2.2 octane-2-carboxylate (diepoxide 304) with maleic anhydride and trimethylolet ane yielded a dark brown, brittle, thermoplastic material. he ether-linked bisbicyclic diepoxide (resin 262) as the most thermally stable and rigid of all the bicyclic compounds synthesized. When cured with maleic anhydride and trimethylolethane at temperatures up to 220 C a Vicat penetration temperature of 518 F (270 C) was obtained. Resins derived from diepoxide 262 compare favorably in thermal rigidity with many anhydride cured bisphenol epoxides but have lower stabilitie than dicyclopentadiene dioxide or epoxy-novolac resins. No completely colorless resins were made. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1962
- Accession Number
- AD0277615
Entities
People
- Howard W. Christie
- Thomas M. Medved
Organizations
- MRIGlobal