公开(公告)号：DE2908212A1

公开(公告)日：1980-09-11

申请号：DE2908212

申请日：1979-03-02

Applicant: BASF AG

Inventor： KEMPE UWE DIPL CHEM DR ,  DOCKNER TONI DIPL CHEM DR ,  FRANK ANTON ,  KARN HELMUT

IPC: C07D233/54 ,  C07D233/64

Abstract: A process for the manufacture of 5-hydroxymethylimidazoles by reaction of an imidazole with formaldehyde or an oligomer of formaldehyde in aqueous hydrochloric acid solution containing from 5 to 18% by weight of hydrogen chloride, at from 80 DEG to 160 DEG C., if desired in a closed system under pressure, followed by isolation in the form of its hydrochloride of the 5-hydroxymethylimidazole obtained.

公开(公告)号：DE2751336A1

公开(公告)日：1979-05-23

申请号：DE2751336

申请日：1977-11-17

Applicant: BASF AG

Inventor： PLATZ ROLF DIPL CHEM DR ,  DOCKNER TONI DIPL CHEM DR ,  HENERS JUERGEN DIPL CHEM DR ,  KRUG HERBERT

IPC: C07B61/00 ,  B01J23/00 ,  B01J23/72 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C231/08 ,  C07C233/09 ,  C07C103/133 ,  C07C102/08

公开(公告)号：DE2733466A1

公开(公告)日：1979-02-22

申请号：DE2733466

申请日：1977-07-25

Applicant: BASF AG

Inventor： DOCKNER TONI DIPL CHEM DR ,  FRANK ANTON ,  KRUG HERBERT

IPC: C07D233/54 ,  C07D233/58

Abstract: Prodn. of imidazoles of formula (I) comprises (a) reacting 1,2-diamines of formula (II) with carboxylic acids of formula (III) or (b) dehydrogenating 2-imidazolines of formula (IV), in either case by heating at 300-600 degrees C in the presence of zinc oxide or a mixt. of zinc oxide and aluminium oxide as catalyst: (R1 - R4 = H or an aliphatic, araliphatic, cycloaliphatic or aromatic residue). (I) are intermediates for dyes, plant protection agents, textile aids, polyurethane and epoxy resin catalysts, surfactants and pharmaceuticals (e.g. nitroimidazoles). They can also be used as catalysts for polymerisations and aldol condensations. (I) is obtd. in good yields and purity. The catalysts used are cheap and easily regenerated, and are not significantly poisoned after prolonged use.

公开(公告)号：DE2538463A1

公开(公告)日：1977-03-10

申请号：DE2538463

申请日：1975-08-29

Applicant: BASF AG

Inventor： DOCKNER TONI DIPL CHEM DR ,  VOGEL LUDWIG DIPL ING ,  AUER EBERHARD DIPL ING ,  KRUG HERBERT ,  HICKMANN ECKHARD DIPL CHEM DR

IPC: B01J23/22 ,  B01J27/198 ,  C01B7/00 ,  C01B7/01 ,  C01B7/09 ,  C01B7/13 ,  C01B7/19 ,  C01B7/20 ,  C02F1/72 ,  C02F11/06 ,  F23G5/30 ,  F23G7/00

Abstract: Wastes from chemical processes contg. halogens and/or hydrogen halides and elemental carbon and/or a heavy organic residue and opt. water are reacted with oxygen or an O2-contg. gas at 300-700 degrees C in the presence of a catalyst system comprising V2O5 and an oxygen-contg. cpd. of P(V) on an inorganic carrier (having a specific surface area of 250-600 m2/g). The halogens and/or the hydrogen halides are sepd. from the gaseous reaction prods. by condensation or absorption in water. CO2 is released to the atmos. Complete combustion of carbon is achieved. The economy of the process is good because the fuel consumption is less than in the known processes.

公开(公告)号：DE2511978A1

公开(公告)日：1976-09-30

申请号：DE2511978

申请日：1975-03-19

Applicant: BASF AG

Inventor： DOCKNER TONI DIPL CHEM DR ,  PLATZ ROLF DIPL CHEM DR

IPC: C07C67/04 ,  C07C69/14 ,  C07C69/54

Abstract: Esters of formula R1COOCHR3CH2R2 (I) are prepd. by reacting acids R1COOH with olefins R2CH=CHR2 at 141-350 degrees C in presence of (a) a mixt. of SiO2 and H3PO4 as catalyst, H3PO4 is 10-70 wt.% of total catalyst, and (b) as additional catalyst H3PO4 and/or >=1 phosphate ester (where R1 and R2 = aliphatic, cycloaliphatic, araliphatic or aromatic gps. or H; R3 = H or R2 + R3 complete an alicyclic ring). (I) are solvents, esp. for varnishes and synthetic resins, and starting materials for dyes, pesticides, varnishes, perfumes, plasticisers and plastics. Process is simple, can be operated continuously and gives good yields of high purity.