| 摘要 |
NEW MATERIAL:A hydantoin derivative expressed by the formula (R1 and R2 are H or methyl; R3 is 2C or 3C alkylene; R4 is 5-11C alkyl or phenyl). EXAMPLE:3-(Ethyldecanolato)hydantoin. USE:An additive for heat-sensitive recording materials having sensitizing effects. PREPARATION:For example, an halogenated alcohol is reacted with an acid chloride to provide a halogenated ester, which is then reacted with hydantoin to afford the compound expressed by the formula. |
