Document Type and Number:
Japanese Patent JPH0573693
Kind Code:
B2
Abstract:
Agglomerates of spheroidal masses of malachite crystals are prepared so that they contain silicic acid. These agglomerates can be used to prepare a copper-acetylide _ complex, which in turn can be used as a catalyst for the preparation of 1, 4-butynediol from acetylene and formaldehyde.
Inventors:
FREMONT JOSEPH MELVIN (US)
Application Number:
JP12138485A
Publication Date:
October 14, 1993
Filing Date:
June 04, 1985
Export Citation:
Assignee:
DU PONT
International Classes:
B01J23/843; B01J27/20; B01J31/16; C01B33/00; C01G29/00; C07C27/00; C07C29/42; C07C33/046; C01G3/00; C07C67/00; C07F1/08; (IPC1-7): C01G3/00; B01J31/22; C01B33/00; C01G29/00; C07C29/42; C07C33/046; C07F1/08
Next Patent: HYDROEXTRACTING WASHING MACHINE WITH DRAIN PUMP