Abstract: This invention relates to a process for making amines having a high yield weight percent of linear triethylenetetramine (L-TETA) and aminoethylethanolamine (AEEA) by condensing an amino compound in the presence of a condensation catalyst selected from a Group IVB metal oxide, a Group VIB metal-containing substance and a promoted condensation catalyst. This invention also relates to an alkyleneamines producers composition rich in L-TETA and AEEA.
Type:
Grant
Filed:
March 30, 1990
Date of Patent:
July 6, 1993
Assignee:
Union Carbide Chemicals & Plastics Technology Corporation
Inventors:
Stephen W. King, Lloyd M. Burgess, Arthur R. Doumax, Jr.
Abstract: Diphenylamine, which can be substituted by lower alkyl and/or lower alkoxy, is obtained from the corresponding N-cyclohexylidene-aniline by catalytic dehydrogenation, a rhodium-containing catalyst being employed.
Type:
Grant
Filed:
December 11, 1991
Date of Patent:
March 23, 1993
Assignee:
Bayer Aktiengesellschaft
Inventors:
Otto Immel, Helmut Waldmann, Reinhard Langer, Gerhard Darsow, Hans-Josef Buysch
Abstract: Known .beta.-hydroxyethyl-(1,2,4-triazole) derivatives of the formula ##STR1## in which R represents alkyl, halogenoalkyl, optionally substituted cycloalkyl or optionally substituted phenyl,Z represents halogen, alkyl, cycloalkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, optionally substituted phenyl, optionally substituted phenoxy, optionally substituted phenylalkyl or optionally substituted phenylalkoxy andm represents the number 0, 1, 2 or 3,are prepared by a new process, which comprises reacting oxiranes of the formula ##STR2## in which R, Z and m have the abovementioned meaning, with 1,2,4-triazole of the formula ##STR3## in the presence of a cylcic amid of the formula ##STR4## in which R.sup.1 represents alkyl with 1 to 4 carbon atoms andn represents the number 3, 4 or 5,as diluent, and in the presence of a base.
Abstract: Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO.sub.2 --, andY is the radical of a couplable compound, in particular an N-substituted 4-aminophenyl radical or a hydrogenated quinoline radical, and the rings A, B and D are unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl.These compounds are particularly suitable color formers for pressure-sensitive or heat-sensitive recording materials and produce intense yellow or orange color of excellent fastness to light and, in particular, sublimation.