公开(公告)号：US3607874A

公开(公告)日：1971-09-21

申请号：US3607874D

申请日：1968-11-21

Applicant: BASF AG

Inventor： FUERST ERNST ,  TOUSSAINT HERBERT ,  SOLD GEORG

IPC: C07D295/023 ,  C07D51/66

CPC classification number: C07D295/023 ,  Y02P20/582

Abstract: Production of N-methylpiperazine by reaction of aqueous formaldehyde solution with piperazine followed by hydrogenation of the polymethylenepiperazine formed in the presence of known hydrogenation catalysts at superatmospheric pressure and elevated temperature, the reaction being carried out in the presence of acetic acid or piperazine acetate and the N,N''-dimethylpiperazine formed during the hydrogenation being distilled off as an azeotrope with water. N-methylpiperazine is used as a selective solvent for the extraction of aromatics from hydrocarbon mixtures.

公开(公告)号：US3558619A

公开(公告)日：1971-01-26

申请号：US3558619D

申请日：1968-08-27

Applicant: BASF AG

Inventor： HOFFMANN HERWIG ,  FUERST ERNST ,  TOUSSAINT HERBERT

IPC: C07D295/04 ,  C07D87/34

CPC classification number: C07D295/04

Abstract: PRODUCTION OF N-FORMYLMORPHOLINE OR N-ACETYLMORPHOLINE WHICH COMPRISES MIXING MORPHOLINE WITH FORMIC ACID OR ACETIC ACID AND DISTILLING OFF THE WATER FORMED FROM THE REACTION MIXTURE IN A COLUMN, A ZONE HAVING A TEMPERATURE OF FROM 130* TO 150*C. BEING MAINTAINED IN THE COLUMN ABOVE THE POINT OF SUPPLY AND A ZONE HAVING A TEMPERATURE OF FROM 210* TO 230*C. BEING MAINTAINED BELOW THE POINT OF SUPPLY. N-FORMYLMORPHOLINE AND NACETYLMORPHOLINE ARE SUITABLE AS EXTRACTANTS FOR AROMATIC HYDROCARBONS FROM HYDROCARBON MIXTURES.

公开(公告)号：US3910951A

公开(公告)日：1975-10-07

申请号：US45014674

申请日：1974-03-11

Applicant: BASF AG

Inventor： FUERST ERNST ,  WINDERL SIEGFRIED ,  WITTWER ARNOLD ,  HOFFMANN HERWIG

IPC: C07D207/40 ,  C07D207/404 ,  C07D207/32

CPC classification number: C07D207/404 ,  C07D207/40

Abstract: Manufacture of succinimide from succinic acid and aqueous ammonia in the presence of small amounts of tertiary ammonium phosphate.

Abstract translation: 在少量磷酸三铵存在下，从琥珀酸和氨水中制备琥珀酰亚胺。

公开(公告)号：US3617535A

公开(公告)日：1971-11-02

申请号：US3617535D

申请日：1970-01-16

Applicant: BASF AG

Inventor： WEITZ HANS-MARTIN ,  FUERST ERNST

IPC: B01D11/04 ,  C07C7/10 ,  C10G21/20 ,  C10G21/02

CPC classification number: C10G21/20 ,  B01D11/0488 ,  C07C7/10 ,  C07C15/00

Abstract: Recovery of aromatic hydrocarbons by selective extraction of hydrocarbon mixtures containing olefins and naphthenes in addition to aromatic and paraffinic hydrocarbons. The extractant is a mixture of an N-alkylpyrrolidone and a compound of the formula

WHERE Y is alkylene or alkenylene having two or three carbon atoms or o-phenylene which may be partially hydrogenated and R is alkylene having two to 12 carbon atoms.

公开(公告)号：US3649627A

公开(公告)日：1972-03-14

申请号：US3649627D

申请日：1969-09-19

Applicant: BASF AG

Inventor： FUERST ERNST ,  ADAM KARL ,  HOFFMANN HERWIG ,  PILCH KURT ,  WINDERL SIEGFRIED ,  SANNE WALTER

IPC: C07D295/04 ,  C07D87/24 ,  C07D87/26

CPC classification number: C07D295/04

Abstract: AN IMPROVED PROCESS FOR THE PRODUCTION OF N-SUBSTITUTED MORPHOLINES BY HEATING A N-SUBSTITUTED BIS-(B-HYDROXYETHYL)-AMINE OR BIS-(B-HYDROXYPROPYL)-AMINE IN THE PRESENCE OF A WATER-ELIMINATING CATALYST, THE IMPROVEMENT CONSISTING IN CARRYING OUT THE REACTION AT A TEMPERATURE OF FROM 180* TO 270* C. IN THE PRESENCE OF WATER OR IN THE PRESENCE OF A HIGH-BOILING ORGANIC SOLVENT WHICH IS INERT UNDER THE REACTION CONDITIONS.

公开(公告)号：US3580839A

公开(公告)日：1971-05-25

申请号：US3580839D

申请日：1968-12-19

Applicant: BASF AG

Inventor： FUERST ERNST ,  WEITZ HANS-MARTIN

IPC: C07C7/10 ,  C10G21/20

CPC classification number: C10G21/20 ,  C07C7/10 ,  C07C15/00

Abstract: WHERE X DENOTES OR ACETYL AND R DENOTES LOWER ALKYL.

1-X,4-R-PIPERAZINE

RECOVERY OF AROMATIC HYDROCARBONS FROM MIXTURES OF HYDROCARBONS WHICH CONTAIN PARAFFINS AND POSSIBLY OLEFINS AND/OR NAPTHENES BY USING AS EXTRACTANTS PIPERAZINE DERIVATIVES HAVING THE GENERAL FORMULA: