公开(公告)号：BR7409736A

公开(公告)日：1976-05-25

申请号：BR973674

申请日：1974-11-20

Applicant: BASF AG

Inventor： DIEM H ,  DUDECK C ,  LEHMANN G ,  LIBOWITZKY H ,  MATTHIAS G

IPC: C07C45/00 ,  C07C45/86 ,  C07C47/058 ,  C07C67/00 ,  C07C47/04 ,  C07C45/24

Abstract: 1480921 Stabilizing aqueous formaldehyde BASF AG 25 Nov 1974 [26 Nov 1973] 50896/74 Heading C2C Aqueous formaldehyde solutions are stabilized by means of a bis-guanamine of formula wherein the two substituent on the phenylene ring are in m or p-position to each other. 0À001 to 0À5% by weight of stabilizer may be used and the formaldehyde solution may contain 28-65% by weight of formaldehyde. The stabilizer may be added as a stock solution in a formaldehyde solution of higher strength than that to be stabilized and having a pH of 2À5 to 5À8 and the latter is preferably kept at 40-80‹ C. for 10-30 hours before adding the stock solution.

公开(公告)号：NO743967L

公开(公告)日：1976-05-05

申请号：NO743967

申请日：1974-11-04

Applicant: BASF AG

Inventor： AICHER A ,  HAAS H ,  SPERBER H ,  DIEM H ,  MATTHIAS G ,  LEHMANN G

IPC: C07C20060101 ,  C07C47/055 ,  C07C

公开(公告)号：NO743967A

公开(公告)日：1976-05-05

申请号：NO743967

申请日：1974-11-04

Applicant: BASF AG

Inventor： AICHER A ,  HAAS H ,  SPERBER H ,  DIEM H ,  MATTHIAS G ,  LEHMANN G

IPC: C07C20060101 ,  C07C47/055 ,  C07C

公开(公告)号：SE7510419L

公开(公告)日：1976-03-19

申请号：SE7510419

申请日：1975-09-17

Applicant: BASF AG

Inventor： AICHER A ,  HAAS H ,  DIEM H ,  DUDECK C ,  BRUNNMUELLER F ,  LEHMANN G

IPC: C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C47/055 ,  C07C47/058 ,  C07C67/00 ,  C07C47/04

Abstract: Formaldehyde is manufactured by oxidative dehydrogenation of methanol in the presence of a silver catalyst and of certain amounts of steam and formaldehyde, some formaldehyde and a part of the water being withdrawn from the reaction mixture and recycled. The formaldehyde manufactured by the process may be used as a disinfectant, tanning agent, reducing agent and starting material for the manufacture of synthetic resin, adhesives and plastics.

公开(公告)号：ZA748157B

公开(公告)日：1976-01-28

申请号：ZA748157

申请日：1974-12-23

Applicant: BASF AG

Inventor： DIEM H ,  DUDECK C ,  LEHMANN G

IPC: C07D20060101 ,  C07D251/22 ,  C07D251/18 ,  C07D251/48 ,  C07D403/12 ,  C07D

Abstract: Manufacture of phthalo-bis-guanamines by reaction of phthalodinitriles with dicyandiamide in the presence of basic compounds and dialkylsulfoxides. The products are starting materials for the manufacture of synthetic resins, plastics, textile auxiliaries, plant protection agents and dyes.

公开(公告)号：ZA744386B

公开(公告)日：1975-08-27

申请号：ZA744386

申请日：1974-07-09

Applicant: BASF AG

Inventor： WOLF D ,  MATTHIAS G ,  DIEM H ,  GRABOWSKY O

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

Abstract: Manufacture of formaldehyde by oxidative dehydrogenation of methanol in the presence of a silver catalyst using methanol obtained from a condensate derived from the evaporation of aqueous reaction mixtures in the synthesis of urea resins and then treated with caustic soda solution under specific conditions of temperature, pressure, residence time and initial formaldehyde concentration. The formaldehyde obtained is a disinfectant, tanning agent, reducing agent and starting material for the manufacture of synthetic resins, adhesives and plastics.

公开(公告)号：ZA733290B

公开(公告)日：1974-05-29

申请号：ZA733290

申请日：1973-05-16

Applicant: BASF AG

Inventor： AICHER A ,  HESS K ,  HUSSY O ,  DIEM H ,  HAAS H ,  STICKEL R ,  MATTHIAS G ,  SPERBER H

IPC: C07C47/052 ,  B01J7/00 ,  B01J8/00 ,  B01J23/00 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C10L3/00 ,  F23C99/00 ,  C10L

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：ZA7303290B

公开(公告)日：1974-05-29

申请号：ZA7303290

申请日：1973-05-16

Applicant: BASF AG

Inventor： AICHER A ,  HESS K ,  HUSSY O ,  DIEM H ,  HAAS H ,  STICKEL R ,  MATTHIAS G ,  SPERBER H

IPC: C07C47/052 ,  B01J7/00 ,  B01J8/00 ,  B01J23/00 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C10L3/00 ,  F23C99/00 ,  C10L

CPC classification number: C10L3/00 ,  C07C45/38 ,  C07C47/04

公开(公告)号：ZA732779B

公开(公告)日：1974-04-24

申请号：ZA732779

申请日：1973-04-25

Applicant: BASF AG

Inventor： DIEM H ,  MATTHIAS G ,  HUSSY O

IPC: C07C47/052 ,  C07C45/00 ,  C07C45/38 ,  C07C47/055 ,  C07C67/00

Abstract: The production of formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst using air which has been washed with a solution of an alkali metal compound in water and methanol in specific proportions. The product is a disinfectant, tanning agent, reducing agent and a starting material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：BR7300234D0

公开(公告)日：1973-09-20

申请号：BR23473

申请日：1973-01-11

Applicant: BASF AG

Inventor： MATTHIAS G ,  DIEM H ,  KRAUS F

IPC: C07C47/052 ,  C07C45/00 ,  C07C45/38 ,  C07C47/04 ,  C07C47/055 ,  C07C47/058 ,  C07C67/00