C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/055 (2006.01) C07C 69/24 (2006.01) C07C 69/44 (2006.01) C07C 69/56 (2006.01) C07C 69/78 (2006.01)
Patent
CA 2133248
-42- SYNTHESIS OF HIGHER VINYL ESTERS FROM ETHYLENE AND CARBOXYLIC ACIDS Abstract A homogeneous liquid phase process for producing a vinyl carboxylate in which the carboxylate group contains at least four carbon atoms, which process comprises (1) forming a homogeneous liquid reaction mixture containing ethylene, oxygen carboxylic acid having at least three carbon atoms, a palladium (II) catalyst and a copper (II) oxidant and (2) maintaining the reaction mixture under conditions at which the ethylene and the carboxylic acid react to form the vinyl carboxylate in the homogeneous liquid reaction mixture, with the proviso that at least one of the following conditions exists during said process: (i) the copper (I) oxidant is a copper (II) carboxylate in which carboxylate group has a molecular weight that is higher than the molecular weight of the carboxylate group in the carboxylic acid; (ii) the palladium (II) catalyst is formed in situ in the reaction mixture by the oxidation of a palladium (0) colloid; and/or (iii) the reaction mixture also contains a polyglyme compound as a promoter.
Sim & Mcburney
Union Carbide Chemicals & Plastics Technology Corporation
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