公开(公告)号：US3923909A

公开(公告)日：1975-12-02

申请号：US33408473

申请日：1973-02-20

Applicant: LABOFINA SA

Inventor： CAMERMAN PHILIPPE JEAN ANDRE

IPC: C07C27/12 ,  C07C27/00 ,  C07C37/08 ,  C07C39/06 ,  C07C45/00 ,  C07C45/53 ,  C07C47/07 ,  C07C67/00 ,  C07C409/08 ,  C07C39/02

CPC classification number: C07C409/08 ,  C07C37/08 ,  C07C45/53 ,  C07C407/00 ,  C07C407/003 ,  C07C47/06 ,  C07C39/06

Abstract: A process for producing ethylphenols which comprises (1) the oxidation of diethylbenzene by passing a molecular oxygen containing gas into contact with said diethylbenzene at a temperature between 100* and 180*C to convert 5 to 30 percent of said diethylbenzene into diethylbenzene hydroperoxide, (2) withdrawing the reaction mixture, separating the unconverted diethylbenzene therefrom to obtain a hydroperoxide concentrate containing at least 40 percent of diethylbenzene hydroperoxide, (3) mixing the diethylbenzene hydroperoxide concentrate with a solvent selected from the group consisting of low molecular weight aliphatic alcohols, ketones and mixtures thereof, (4) decomposing said hydroperoxide by intimate contact with a strong acid which is used in an amount of between 0.05 and 5 percent of the weight of total reaction mixture, and neutralizing the resulting mixture, and (5) distilling the neutralized mixture to recover a bottom fraction containing ethylphenol and a top fraction containing acetaldehyde.

Abstract translation: 一种生产乙基苯的方法，其包括（1）通过使含分子氧的气体与所述二乙基苯在100至180℃之间的温度下进行氧化来将二乙基苯氧化以将5至30％的所述二乙基苯转化为二乙基苯氢过氧化物（ 2）取出反应混合物，从其中分离未转化的二乙基苯，得到含有至少40％二乙基苯氢过氧化物的氢过氧化物浓缩物，（3）将二乙基苯氢过氧化物浓缩物与选自低分子量脂族醇，酮 （4）通过与强酸反应来分解所述氢过氧化物，所述强酸的用量为总反应混合物重量的0.05-5％，中和所得混合物，和（5）蒸馏中和的 混合物以回收含有乙基苯酚和顶部馏分的底部馏分 含乙醛。