Patent search ap:("BASF AG") AND inv:"HANS SPOHN" Page 1

1.

发明授权
Recovery of pure dimethyl terephthalate by continuous distillation 失效
Title translation: 通过连续蒸馏回收纯对苯二甲酸二甲酯

公开(公告)号：US2862021A

公开(公告)日：1958-11-25

申请号：US65071457

申请日：1957-04-04

Applicant: BASF AG

Inventor： HEINZ BILLE , HANS SPOHN , HANS-GEORG TRIESCHMANN

IPC: B01D5/00 , C07C69/82

CPC classification number: B01D5/00 , C07C67/52 , C07C67/54 , C07C69/82

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