申请人:Asahi Kasei Kogyo Kabushiki Kaisha
公开号:EP0161550A1
公开(公告)日:1985-11-21
A process for producing an aliphatic isocyanate from an aliphatic primary amine comprising a carbonylation step in which an aliphatic primary amine is allowed to react with carbon monoxide at a temperature of about 100-250°C in the presence of an aromatic hydroxyl compound having a pKa value of not more than about 11, molecular oxigen and a catalyst system comprising at least one member selected from palladium and rhodium metals and components thereof and at least one member selected from iodine and bromine and compounds thereof and a combined separation and recovery step comprising a pyrolysis-distillation reaction in which the mixture of carbonylated products is heated to a temperature of from about 100 to 300°C.
一种用脂肪族伯胺生产脂肪族异氰酸酯的工艺,包括一个羰基化步骤,在该步骤中,脂肪族伯胺在 pKa 值不大于约 11 的芳香族羟基化合物、分子氧化物和催化剂体系的存在下,在约 100-250°C 的温度下与一氧化碳反应,该催化剂体系包括至少一种选自钯和铑金属及其组分的成员和至少一种选自碘和溴及其化合物的成员,以及一个分离和回收组合步骤,该步骤包括热解-蒸馏反应,在该反应中,羰基化产物混合物被加热到约 100 至 300°C 的温度。