公开(公告)号：DE3784825D1

公开(公告)日：1993-04-22

申请号：DE3784825

申请日：1987-08-25

Applicant: BASF AG

Inventor： WEBER ENGELBERT ,  DIEM HANS DR ,  MUEHLTHALER WOLFGANG ,  MATTHIAS GUENTHER DR

IPC: C08G12/12 ,  C08G12/32 ,  C08G14/06 ,  C09J161/34

Abstract: A process is claimed for the prodn. of urea-formaldehyde resins (I) with U:F ratio from 1:1.0 to 1:2.1 and a solids content of 58-75 wt.% (opt. contg. melamine, phenol, etc.), by concn. of a condensate soln. (II), followed opt. by reaction with urea. (II) contains 38-55 wt.% dry matter, and is conc. by thin-layer evapn. to 58-72 wt.%, with recycling of 10-60 wt.% of the prod. soln. to the thin layer evaporator. Evapn. is performed in falling-film evaporator(s) in series or in parallel, pref. in two or three stages with recycling at each stage; evaporator is operated with film thickness about 1.5 mm and dwell-time 1-10 mins., pref. with steam at 2-6 bar, and at 48-100 deg.C; recycled soln. is treated with 60-70 wt.% aq. urea soln. before re-entering the evaporator; evapn. is performed at 850-100 mbar; pref., (II) contains 40-50 wt.% dry matter, and is conc. to 60-68 wt.%.

公开(公告)号：AT51238T

公开(公告)日：1990-04-15

申请号：AT85114585

申请日：1985-11-16

Applicant: BASF AG

Inventor： ETLING HANS DR ,  DIEM HANS DR ,  EISELE WOLFGANG DR ,  SIEGLER MANFRED

IPC: C08G12/38 ,  C08J5/24 ,  C08L61/30 ,  C09J161/30

公开(公告)号：DE3629602A1

公开(公告)日：1988-03-03

申请号：DE3629602

申请日：1986-08-30

Applicant: BASF AG

Inventor： WEBER ENGELBERT ,  DIEM HANS DR ,  MUEHLTHALER WOLFGANG ,  MATTHIAS GUENTHER DR

IPC: C08G12/12 ,  C08G12/32 ,  C08G14/06 ,  C09J161/34 ,  C08G12/36 ,  C08G12/38 ,  C08G14/08 ,  C09J3/16

公开(公告)号：AT13064T

公开(公告)日：1985-05-15

申请号：AT81107885

申请日：1981-10-03

Applicant: BASF AG

Inventor： ETLING HANS DR ,  DUDECK CHRISTIAN DR ,  DIEM HANS DR ,  SIEGLER MANFRED

IPC: C08G12/12 ,  C08G12/32 ,  C08G12/38 ,  C08L61/24 ,  C08L61/28 ,  C08L61/30 ,  C08L91/06 ,  C08L97/02 ,  C09J3/16

公开(公告)号：DE2960108D1

公开(公告)日：1981-02-26

申请号：DE2960108

申请日：1979-01-22

Applicant: BASF AG

Inventor： DIEM HANS DR ,  DUDECK CHRISTIAN DR ,  LEHMANN GUNTER ,  MATTHIAS GUENTHER DR ,  PETRI NORBERT DR

IPC: C07C47/127 ,  B01J23/00 ,  C07C45/00 ,  C07C45/29 ,  C07C45/38 ,  C07C49/12 ,  C07C67/00

公开(公告)号：DE2860353D1

公开(公告)日：1981-02-12

申请号：DE2860353

申请日：1978-12-19

Applicant: BASF AG

Inventor： DUDECK CHRISTIAN DR ,  LEHMANN GUNTER ,  PETRI NORBERT DR ,  DIEM HANS DR ,  FLIEGE WERNER DR ,  MEISSNER BERND DR ,  ROSS KARL-HEINZ DR ,  MUEHLTHALER WOLFGANG

IPC: C07C47/198 ,  B01J23/00 ,  B01J23/50 ,  B01J23/72 ,  B01J27/14 ,  B01J35/02 ,  B01J37/02 ,  C07C45/00 ,  C07C45/29 ,  C07C45/37 ,  C07C45/38 ,  C07C45/39 ,  C07C49/175 ,  C07C67/00

Abstract: Aliphatic hydroxycarbonyl compounds etherified with aliphatic groups are prepared by oxidizing hydroxyalcohols in the presence of a metal catalyst which consists of one or more layers, each of a particular weight and each containing particles of a particular size, the catalyst bed also having a particular total thickness, and the catalyst components used being silver and copper, with or without added copper/tin/phosphorus or silver alone. The etherified hydroxyaldehydes and hydroxyketones obtainable by the process of the invention are valuable starting materials for the preparation of dyes, pesticides, plastics and scents.

公开(公告)号：FR2190789B1

公开(公告)日：1978-07-07

申请号：FR7323075

申请日：1973-06-25

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C47/04

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：FR2190789A1

公开(公告)日：1974-02-01

申请号：FR7323075

申请日：1973-06-25

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C47/04

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：DE2224223A1

公开(公告)日：1973-12-13

申请号：DE2224223

申请日：1972-05-18

Applicant: BASF AG

Inventor： AICHER ALBRECHT ,  DIEM HANS DR ,  HAAS HANS DR ,  HESS KLAUS DR DIPL ING ,  HUSSY OSKAR DIPL ING ,  MATTHIAS GUENTHER DR ,  SPERBER HEINRICH DR ,  STICKEL RICHARD DIPL ING

IPC: C07C47/052 ,  B01J7/00 ,  B01J8/00 ,  B01J23/00 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C10L3/00 ,  F23C99/00

Abstract: The production of combustion gas containing little or no carbon black by mixing a starting mixture of oxygen and methanol with more oxygen in specific proportions, igniting the mixture thus prepared and incompletely burning the methanol in the flame formed. The gas may be used advantageously in all cases where deposition of soot would be troublesome. It may be used with advantage for heating catalysts in catalytic syntheses, for example silver catalysts to be used for catalyzing the reaction of methanol with oxygen to form formaldehyde.

公开(公告)号：DE2224258A1

公开(公告)日：1973-12-06

申请号：DE2224258

申请日：1972-05-18

Applicant: BASF AG

Inventor： HAAS HANS DR ,  AICHER ALBRECHT ,  DIEM HANS DR ,  DUEMBGEN GERD DR ,  MATTHIAS GUENTHER DR ,  HUSSY OSKAR DIPL ING

IPC: C07C45/38 ,  C07C47/058 ,  C07C273/02 ,  C07C47/04