| abstract |
The present invention provides a multi-step method for continuously producing alicyclic vulcabond on the condition of non light and non-air, by the reaction of the alicyclic diamine and the carboxylic acid derivatives with alcohol producing alicyclic diurethane and subsequently decomposed into alicyclic vulcabond, characterized in that diurethane is formed by two steps, thermo-decomposing via removing diurethane of the easier boiler and the medium boiler to release desirable vulcabond, and continuously draining the product on the bottom of the part degradable tower of the degradable equipment, proceeding re-urethane by alcohol, then separating the high boiler, and then making the re-urethane product circle in the process, wherein using the unprocessed carbamide and/or carbamide equivalent made of un-precessed carbamide. |