公开(公告)号：DE2639287B1

公开(公告)日：1978-01-26

申请号：DE2639287

申请日：1976-09-01

Applicant: BASF AG

Inventor： SIMMLER WERNER DIPL-ING DR ,  MARQUARDT SIEGFRIED ING ,  STINGL WALTER ,  DIEM HANS DIPL-CHEM DR ,  DUDECK CHRISTIAN DIPL-CHEM DR

IPC: C23C18/44 ,  C23C3/02

Abstract: Metallic Ag is reductively deposited on non-metallic substrates by (1) pretreating the substrates with hydrazine, or hydrazine derivs., and then (2) immersing in Ag solns. contg. aminoacids (I) having formula NH2-R1-COOH, NH(R1COOH)(R2COOH) and/or N(R1COOH)(R2COOH) (R3COOH)(where R1, R2 and R3 are opt. different hydrocarbyl gps.). Pref. (I) may be added during prepn. of the Ag salt solns. Quantity of (I) is 0.02-0.3 mol/g. atom of dissolved Ag. Bath may be alkaline, neutral or acid, and is kept at 0-100 (1-30) degrees C, e.g. for 1-10 (2-5) min. Process is opt. combined with electrodeposition. Substrates may be Al2O3, graphite, coke, active C, glass, ceramic, plastic or textile fibres. Substrate require no preliminary surface activation or sensiting. Ag layers of opt. thickness and high conductivity can be achieved by a 1-step treatment. Ag yield reaches >80%.

公开(公告)号：DE2334981A1

公开(公告)日：1975-01-30

申请号：DE2334981

申请日：1973-07-10

Applicant: BASF AG

Inventor： GRABOWSKY OTTO DR ,  WOLF DIETER DIPL-ING DR ,  DIEM HANS DIPL-CHEM DR ,  MATTHIAS GUENTHER DIPL-CHEM DR

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：DE2442231A1

公开(公告)日：1976-03-18

申请号：DE2442231

申请日：1974-09-04

Applicant: BASF AG

Inventor： HALBRITTER GUENTER ,  MUEHLTHALER WOLFGANG ING GRAD ,  SOERBER HEINRICH DIPL CHEM DR ,  DIEM HANS DIPL-CHEM DR ,  DUDECK CHRISTIAN DIPL-CHEM DR ,  LEHMANN GUNTER ING GRAD

IPC: B01J23/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C47/055 ,  C07C67/00 ,  C07C47/04