公开(公告)号：DE2355212B1

公开(公告)日：1975-03-06

申请号：DE2355212

申请日：1973-11-05

Applicant: BASF AG

Inventor： GRABOWSKY OTTO DR ,  MATTHIAS GUENTHER DR ,  MAYER JOHANNES DR ,  SCHOENAICH GUENTHER DR

IPC: C07C275/06 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C127/15

Abstract: The preparation of isobutylidenediurea from isobutyraldehyde and urea, the particle size of the product being controlled by alternate use of sulfuric acid and phosphoric acid.

公开(公告)号：DE2112127A1

公开(公告)日：1972-09-21

申请号：DE2112127

申请日：1971-03-13

Applicant: BASF AG

Inventor： PLATZ ROLF DR ,  FUCHS WERNER DR ,  SCHOENAICH GUENTHER DR

IPC: C01C1/16

Abstract: Gas mixture, pref. resulting from the burning of alkyl iodides in an oxide hydrogenation process and contg. iodine vapour and a 10-20 fold molar excess of NH3 as a reducing agent (and opt. a 10-20 fold molar excess of O2 w.r.t. iodine) is heated at 300-1000 degrees C. and then quenched with water at >70 degrees C.