Abstract:
A supported, electron donor-complexed reduced vanadium ( /zirconium coimpregnated catalyst possessing enhanced activity, the methods of its manufacture and ethylene polymers of broad molecular weight distribution produced therewith.
Abstract:
An improved liquid recycle rhodium-catalyzed hydroformylation process wherein the improvement comprises recovering unreacted olefin contained in a vent gas of the process and recycling said unreacted olefin to the hydroformylation reaction medium.
Abstract:
The resolution and stability of liquid, dual-tone photoresist formulations containing novolac resins and photoactive compounds are enhanced by the incorporation therein of certain carbodiimide resolution enhancers.
Abstract:
A process for preparing a supported silver catalyst for the production of alkylene oxide by the vapor phase oxidation of alkylene with an oxygen-containing gas is disclosed and comprises contacting a silver-containing support with a solution comprising a metal-containing promoter other than alkali metals or alkaline earth metals. The solution is chosen so that the metal-containing promoter has an increased affinity to the silver-containing carrier relative to its affinity to the carrier without silver. Alkene epoxidation catalysts and alkene epoxidation processes are also disclosed.
Abstract:
A process for the preparation of monomeric polyvinyl compounds and/or oligomers thereof comprising:
(i) preactivating a supported rhenium oxide catalyst with a hydrocarbyl metal compound; and (ii) reacting, under metathesis reaction conditions, norbornene or one or more substituted norbornenes, or mixtures thereof, with ethylene in the presence of the activated supported catalyst of step (i).
Abstract:
Transesterification and a particular class of catalysts, namely, one or more salts of one or more weak acids, and mixtures thereof, are used to transesterify epoxide esters and active hydrogen-containing compounds to produce a wide variety of cycloaliphatic epoxide products.
Abstract:
A decarboxylation process which comprises contacting a carboxylated compound with a metal oxide catalyst under conditions effective to decarboxylate the carboxylated compound.
Abstract:
A process for preparing carboxylated compounds which comprises contacting an active hydrogen-containing compound with a CO₂ synthon in the presence of a mixed metal oxide catalyst or a modified bimetallic or polymetallic catalyst under conditions effective to produce the carboxylated compound.
Abstract:
Unsaturated polylactone acrylates are produced by the reaction of an unsaturated polylactone, such as that produced in the reaction of a lactone with tetrahydrobenzyl alcohol, and a lower-alkyl acrylate under transesterification conditions. The unsaturated polylactone acrylate product may be subsequently epoxidized to form 3,4-epoxy polylactone acrylates.
Abstract:
A process for preparing N,N,N-trisubstituted nitrogen-containing compounds which comprises contacting a carboxylated N,N,N-trisubstituted nitrogen-containing compound with a mixed metal oxide catalyst under conditions effective to produce the N,N,N-trisubstituted nitrogen-containing compound.