| 摘要 |
Dicyanatochalcones of general formula:wherein R<1 >to R<8>, independent of one another, represent hydrogen, C1-4-alkyl, C1-4-alkoxy or halogen. The compounds can be produced from corresponding dicyanatochalcones by reacting them with chlorine cyanide or bromine cyanide and with a tertiary amine. The compounds are suited for producing polytriazine resins exhibiting good mechanical properties, a low dielectric constant and a good behavior in fire.
|
