Inventor

PRESCHER GUENTER

US37 patents

Patents

37 patents

US5082819AJan 21, 1992

Catalyst for catalytic gas phase oxidation of olefins into unsaturated aldehydes and method for making the catalyst

DEGUSSA75 citations96

US4879057ANov 7, 1989

Aqueous bleaching agent suspensions containing peroxycarboxylic acid, method for their preparation and use

DEGUSSA51 citations95

US4621072ANov 4, 1986

Process for preparing abrasion-resistant coated catalysts

DEGUSSA61 citations95

US4521618AJun 4, 1985

Process for preparing acrylic or methacrylic acid

DEGUSSA43 citations95

US5072052ADec 10, 1991

Process for the production of acrolein by catalytic gas-phase oxidation of propene

DEGUSSA47 citations92

US4442308AApr 10, 1984

Process for preparing by catalytic oxidation in oxygen-containing gas mixtures, acrolein from propylene and methacrolein from isobutylene or tertiary butanol

DEGUSSA52 citations92

US4973718ANov 27, 1990

Aqueous bleaching agent suspensions containing peroxycarboxylic acid, method for their preparation and use

DEGUSSA11 citations72

US4447614AMay 8, 1984

Process for the purification of nicotinic acid amide

DEGUSSA7 citations72

US4849532AJul 18, 1989

Process for the preparation of a cycloaliphatic diepoxide

DEGUSSA7 citations71

US4851556AJul 25, 1989

Process for the preparation of epoxidized polybutadienes

DEGUSSA13 citations70

US4605795AAug 12, 1986

Continuous process for the production of pentanediol-1,2

DEGUSSA11 citations69

US4987226AJan 22, 1991

Rhenium-oxo-porphyrin complexes

DEGUSSA8 citations68

US4734529AMar 29, 1988

Method for the isomerization of oxiranes

DEGUSSA7 citations67

US4668795AMay 26, 1987

Process for the production of optically active 1-benzyl-3,4-bis-(diphenylphosphino)-pyrrolidine

DEGUSSA9 citations67

US4733008AMar 22, 1988

Process for the production of 1,12-dodecanoic diacid

DEGUSSA2 citations62

US4733007AMar 22, 1988

Process for the production of 1,12-dodecanoic diacid

DEGUSSA4 citations62

US4447615AMay 8, 1984

Process for the purification of nicotinic acid amide I

DEGUSSA5 citations61

US5026925AJun 25, 1991

Method of producing catechol and hydroquinone

DEGUSSA5 citations60

US4855465AAug 8, 1989

Process for the treatment of aliphatic epoxides

DEGUSSA6 citations60

US4751332AJun 14, 1988

Process for the production of trihydroxy-and/or alkoxy-hydroxybenzenes

DEGUSSA2 citations60

US4751333AJun 14, 1988

Method for the preparation of trihydroxybenzenes

DEGUSSA3 citations60

US4642387AFeb 10, 1987

Process for the production of 3-cyclohexene-1-carboxaldehyde

DEGUSSA2 citations60

US4861902AAug 29, 1989

Method for the preparation of tetrahydrofurfuryl-(2)-methacrylate and catalyst therefor

DEGUSSA2 citations56

US4921983AMay 1, 1990

Method for the continuous epoxidation of olefins

DEGUSSA1 citations51

US4680420AJul 14, 1987

Process for the producing 2,5-dimethoxytetrahydrofuran and 2,5-diethoxytetrahydrofuran

DEGUSSA0 citations51

US4825011AApr 25, 1989

Method of preparing substituted dihydroxy-benzenes

DEGUSSA0 citations50

US4762953AAug 9, 1988

Method for the preparation of substituted trihydroxybenzenes

DEGUSSA0 citations49

US4721804AJan 26, 1988

Process for the preparation of Δ 3-tetrahydrobenzoic acid- Δ 3-tetrahydrobenzyl ester

DEGUSSA0 citations39

PRESCHER GUENTER

Patents

Catalyst for catalytic gas phase oxidation of olefins into unsaturated aldehydes and method for making the catalyst

Aqueous bleaching agent suspensions containing peroxycarboxylic acid, method for their preparation and use

Process for preparing abrasion-resistant coated catalysts

Process for preparing acrylic or methacrylic acid

Process for the production of acrolein by catalytic gas-phase oxidation of propene

Process for preparing by catalytic oxidation in oxygen-containing gas mixtures, acrolein from propylene and methacrolein from isobutylene or tertiary butanol

Method for the catalytic epoxidation of olefins with hydrogen peroxide

Method for the catalytic epoxidation of olefins with hydrogen peroxide

Method for preparation of acetals

Compounds of catalysts for dealkoxylation of gem-dialkoxy

Process for the preparation of epoxidized organosilicon compounds

Process for the preparation of 2-alkyl-1,4-butanedial

Process for the continuous production of vicinal diols

Method for the preparation of 1,4-butandial

Process for preparing aromatic nitriles

Aqueous bleaching agent suspensions containing peroxycarboxylic acid, method for their preparation and use

Process for the purification of nicotinic acid amide

Process for the preparation of a cycloaliphatic diepoxide

Process for the preparation of epoxidized polybutadienes

Continuous process for the production of pentanediol-1,2

Rhenium-oxo-porphyrin complexes

Method for the isomerization of oxiranes

Process for the production of optically active 1-benzyl-3,4-bis-(diphenylphosphino)-pyrrolidine

Process for the production of 1,12-dodecanoic diacid

Process for the production of 1,12-dodecanoic diacid

Process for the purification of nicotinic acid amide I

Method of producing catechol and hydroquinone

Process for the treatment of aliphatic epoxides

Process for the production of trihydroxy-and/or alkoxy-hydroxybenzenes

Method for the preparation of trihydroxybenzenes

Process for the production of 3-cyclohexene-1-carboxaldehyde

Method for the preparation of tetrahydrofurfuryl-(2)-methacrylate and catalyst therefor

Method for the continuous epoxidation of olefins

Process for the producing 2,5-dimethoxytetrahydrofuran and 2,5-diethoxytetrahydrofuran

Method of preparing substituted dihydroxy-benzenes

Method for the preparation of substituted trihydroxybenzenes

Process for the preparation of Δ 3-tetrahydrobenzoic acid- Δ 3-tetrahydrobenzyl ester