Method for preparing glycol esters
AssigneeRohm Co., Ltd.
InventorsWolfgang Gaenzler, Klaus Kabs, Guenter Schroeder
Life of this patent
Estimating the term…
Abstract
An improved method for making glycol monoesters and diesters of carboxylic acid by the reaction of an olefin and oxygen in the presence of a carboxylic acid and a catalyst, wherein said catalyst includes a compound of a metal of groups IVB - VIIB having an atomic number between 40 and 42 inclusive or between 72 and 75 inclusive, i.e. zirconium, niobium, molybdenum, hafnium, tantalum, tungsten, or rhenium.
Claims11
In a method for making glycol monoesters and glycol diesters of a carboxylic acid by reacting an olefin with oxygen in a reaction medium comprising or consisting essentially of a carboxylic acid in the presence of a catalyst, the improvement wherein said reaction is performed at an elevated pressure, above atmospheric pressure, and wherein said catalyst consists essentially of (A) a compound, soluble in said reaction medium, of a catalytic metal of Groups IVB - VIIB of the Periodic Table having an atomic number between 40 and 42 inclusive or between 72 and 75 inclusive or consists essentially of (B) a catalyst as defined in (A) in combination with the compound, soluble in said reaction medium, of a further metal selected from the group consisting of lithium, sodium, potassium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, aluminum, or silver.
Dependencies are inferred from the claim text.