| 摘要 |
NEW MATERIAL:The benzotriazole derivative of formula I (R1 is H or CH3; R2 and R3 are H or lower alkyl substituted with halogen or OH). EXAMPLE:The compound of formula II. USE:Rust-preventive agent for metal, polymerization catalyst for urethane, raw material for synthetic resins such as polyurethane or polyester, etc. PREPARATION:The compound of formula I can be produced by reacting benzotriazole of formula II with an epoxy compound of formula III in a solvent (preferably toluene, etc.) under normal pressure under heating and stirring. |
