Inventor

HUPFER LEOPOLD

45 patents

Patents

45 patents

US4885395ADec 5, 1989

Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst

BASF AG35 citations91

US4429155AJan 31, 1984

Preparation of aromatic amines

BASF AG35 citations90

US4068077AJan 10, 1978

Manufacture of N-substituted tetrahydro-1,4-oxazines

BASF AG21 citations82

US4594461AJun 10, 1986

Preparation of trimethylolalkanes from alkanals and formaldehyde

BASF AG21 citations81

US4386219AMay 31, 1983

Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts

BASF AG25 citations81

US5225602AJul 6, 1993

Phenylacetaldehydes and the preparation of phenylacetaldehydes

BASF AG13 citations74

US5130435AJul 14, 1992

Preparation of vinyl ethers

BASF AG8 citations74

US4990684AFeb 5, 1991

Preparation of phenylacetaldehydes

BASF AG15 citations74

US4943667AJul 24, 1990

Preparation of phenylethanols

BASF AG9 citations74

US4891451AJan 2, 1990

Preparation of vinyl ethers

BASF AG9 citations74

US4866210ASep 12, 1989

Preparation of ketones

BASF AG10 citations74

US4298733ANov 3, 1981

Preparation of cis-2,6-dimethylmorpholine

BASF AG6 citations74

US4283534AAug 11, 1981

Reductive alkylation of nitrogen heterocycles

BASF AG10 citations74

US4212972AJul 15, 1980

Preparation of cis-2,6-dimethylmorpholine

BASF AG10 citations74

US5705683AJan 6, 1998

Carbonylation of olefins

BASF AG11 citations73

US4980511ADec 25, 1990

Preparation of aldehydes and/or ketones BU conversion of epoxides

BASF AG10 citations73

US4538009AAug 27, 1985

Preparation of substituted phenols

BASF AG10 citations73

US4450277AMay 22, 1984

Preparation of 1-substituted imidazoles

BASF AG13 citations73

US4347388AAug 31, 1982

3,6-Dimethyl-3-hydroxy-oct-1-ynes and -oct-1-enes, derivatives of these, and their use as scents, and in the preparation of 3,6-dimethyl-3-hydroxy-octane

BASF AG9 citations73

US4105669AAug 8, 1978

Manufacture of 2-amino-1-alcohols

BASF AG8 citations73

US5200560AApr 6, 1993

Preparation of carboxylic chlorides

BASF AG18 citations72

US5196611AMar 23, 1993

Preparation of alkyl, alkenyl, and alkynyl chlorides

BASF AG8 citations72

US5149861ASep 22, 1992

Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes

BASF AG16 citations71

US3972938AAug 3, 1976

Manufacture of hexamethylene diamine

BASF AG10 citations71

US5401873AMar 28, 1995

Preparation of methyl formate

BASF AG12 citations69

US4728435AMar 1, 1988

Decolorization of aqueous glyoxal solutions

BASF AG9 citations69

US4968831ANov 6, 1990

Preparation of α-ketocarboxylic esters

BASF AG2 citations63

US4960954AOct 2, 1990

Preparation of enol ethers

BASF AG5 citations63

US4812593AMar 14, 1989

Preparation of bifunctional compounds

BASF AG5 citations63

US4677230AJun 30, 1987

Preparation of 2-methyl-2-alkenals

BASF AG4 citations63

US4355180AOct 19, 1982

Preparation of primary aromatic amines from cyclic alcohols and/or ketones

BASF AG5 citations63

US5000832AMar 19, 1991

Purification of aqueous glyoxal solutions

BASF AG6 citations62

US4196147AApr 1, 1980

Manufacture of N-alkylanilines

BASF AG2 citations62

US4521632AJun 4, 1985

Purification of aqueous glyoxal solutions

BASF AG4 citations61

US4851584AJul 25, 1989

Preparation of carbonyl compounds

BASF AG2 citations60

US4814513AMar 21, 1989

Preparation of carbonyl compounds

BASF AG5 citations60

US4769200ASep 6, 1988

Compounding crystalline organic materials

BASF AG6 citations59

US4824973AApr 25, 1989

Preparation of 4-formyltetrahydropyrans

BASF AG0 citations52

US4698434AOct 6, 1987

Preparation of hydroxymethylimidazoles

BASF AG0 citations51

HUPFER LEOPOLD

Patents

Preparation of alpha, beta-unsaturated ketones

Preparation of unsaturated and saturated ketones

Preparation of formic acid by thermal cleavage of quaternary ammonium formates

Hydrogenation catalysts for the preparation of propanediols

Removal of phosgene from off-gases

Recovery of aqueous glyoxylic acid solutions

Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst

Preparation of aromatic amines

Manufacture of N-substituted tetrahydro-1,4-oxazines

Preparation of trimethylolalkanes from alkanals and formaldehyde

Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts

Phenylacetaldehydes and the preparation of phenylacetaldehydes

Preparation of vinyl ethers

Preparation of phenylacetaldehydes

Preparation of phenylethanols

Preparation of vinyl ethers

Preparation of ketones

Preparation of cis-2,6-dimethylmorpholine

Reductive alkylation of nitrogen heterocycles

Preparation of cis-2,6-dimethylmorpholine

Carbonylation of olefins

Preparation of aldehydes and/or ketones BU conversion of epoxides

Preparation of substituted phenols

Preparation of 1-substituted imidazoles

3,6-Dimethyl-3-hydroxy-oct-1-ynes and -oct-1-enes, derivatives of these, and their use as scents, and in the preparation of 3,6-dimethyl-3-hydroxy-octane

Manufacture of 2-amino-1-alcohols

Preparation of carboxylic chlorides

Preparation of alkyl, alkenyl, and alkynyl chlorides

Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes

Manufacture of hexamethylene diamine

Preparation of methyl formate

Decolorization of aqueous glyoxal solutions

Preparation of α-ketocarboxylic esters

Preparation of enol ethers

Preparation of bifunctional compounds

Preparation of 2-methyl-2-alkenals

Preparation of primary aromatic amines from cyclic alcohols and/or ketones

Purification of aqueous glyoxal solutions

Manufacture of N-alkylanilines

Purification of aqueous glyoxal solutions

Preparation of carbonyl compounds

Preparation of carbonyl compounds

Compounding crystalline organic materials

Preparation of 4-formyltetrahydropyrans

Preparation of hydroxymethylimidazoles