The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 1996
Filed:
Dec. 11, 1995
Joaquim H Teles, Ludwigshafen, DE;
Johann-Peter Melder, Mannheim, DE;
Eugen Gehrer, Ludwigshafen, DE;
Wolfgang Harder, Weinheim, DE;
Klaus Ebel, Ludwigshafen, DE;
Carsten Groening, Ludwigshafen, DE;
Regina Meyer, Fussgoenheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for the catalytical preparation of condensation products of formaldehyde, in which formaldehyde or a formaldehyde-forming compound is caused to undergo reaction using a catalyst which has been produced, in the presence of an auxiliary base, from a triazolium salt of formula I ##STR1## in which R.sup.1 and R.sup.3 are the same or different and stand for aliphatic groups having from 1 to 30 carbon atoms, optionally substituted aryl groups, optionally substituted aralkyl groups, and/or optionally substituted heteroaryl groups,