Inventor
ARPE HANS-JURGEN
12 patents
Patents
12 patentsUS4128575ADec 5, 1978
Process for the manufacture of glycolic acid or its esters
HOECHST AG20 citations81
US4110372AAug 29, 1978
Process for the purification of carboxylic acids
HOECHST AG19 citations78
US4169959AOct 2, 1979
Process for the preparation of ethylene glycol-dimethylether (dimethyl glycol)
HOECHST AG13 citations72
US4093666AJun 6, 1978
Process for the manufacture of glycol ether formals
HOECHST AG7 citations72
US3972949AAug 3, 1976
Process for preparing glycol dimethyl ethers
HOECHST AG11 citations72
US3932518AJan 13, 1976
Methylation of cyclohexanone with simultaneous dehydrogenation
HOECHST AG9 citations72
US4128727ADec 5, 1978
Process for the manufacture of acetic acid ethyl ester
HOECHST AG9 citations70
US4107263AAug 15, 1978
Process for the preparation of bromine and hydrogen bromide from ammonium bromide
HOECHST AG3 citations60
US4105753AAug 8, 1978
Method for selective production of bromine
HOECHST AG3 citations60
US4009209AFeb 22, 1977
Dimerization of cyclohexylidene-acetonitrile and hydrogenation of the resulting substituted glutaric acid dinitrile
HOECHST AG3 citations55
US4041039AAug 9, 1977
Process for preparing 2-ethyl-pyridine
HOECHST AG0 citations50
US3957792AMay 18, 1976
Process for preparing 2-ethyl-pyridine
HOECHST AG1 citations50