1
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Process for dehydrating glycerol to acrolein. Arkema France, Steven D Boyd, July 8, 2008: US07396962 (25 worldwide citation)

The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycero ...


2
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich, Jacques Kervennal: Process for dehydrating glycerol to acrolein. Arkema France, Steven D Boyd, February 2, 2010: US07655818 (12 worldwide citation)

The present invention relates to a process for manufacturing acrolein by gas-phase dehydration of glycerol in the presence of strongly acidic solid catalysts with a Hammett acidity H0 of between −9 and −18 and preferably between −10 and −16.


3
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Method for producing acrylic acid from glycerol. Arkema France, Steven D Boyd, March 22, 2011: US07910771 (8 worldwide citation)

The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction preferably carried out in gaseous phase in the presence of a suitable catalyst.


4
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Process For Dehydrating Glycerol To Acrolein. Arkema France, Arkema, Patent Department 26th Floor, June 19, 2008: US20080146852-A1

The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycero ...


5
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Method for Producing Acrylic Acid from Glycerol. Arkema France, Arkema, Patent Department 26th Floor, July 31, 2008: US20080183013-A1

The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction is preferably carried out in gaseous phase in the presence of a suitable catalyst.


6
Wolfgang Holderich, Marcus Paczkowski, Dieter Heinz, Thomas Kaiser: Process for preparing 3-oxyalkylpropan-1-ols. Hoechst Aktiengesellschaft, Bierman Muserlian and Lucas, July 14, 1998: US05780687 (13 worldwide citation)

A process for preparing 3-oxyalkylpropan-l-ols by catalytic hydrogenation of 1,3-dioxanes with catalysts comprising a hydrogenation-active component on an acid support.


7
Wolfgang Holderich, Marcus Paczkowski, Dieter Heinz, Thomas Kaiser: Process for preparing 3-oxyalkylpropan-1-ols. Hoechst Aktiengesellschaft, Bierman Muserlian and Lucas, October 13, 1998: US05821391 (11 worldwide citation)

A process for preparing 3-oxyalkylpropan-1-ols by catalytic hydrogenation of 1,3-dioxanes with catalysts comprising a hydrogenation-active component on an acid support.


8
Wolfgang Holderich, Nadja Rohrlich, Laurent Chassot: Colourant-loaded molecular sieve. Ciba Specialty Chemicals Corporation, Kevin T Mansfield, David R Crichton, October 19, 1999: US05968242 (4 worldwide citation)

A molecular sieve, which contains in all, or only in some, of its cavities colorant molecules as well as a modifier which is covalently bound to said molecular sieve and which reduces its pore diameter, a process for its preparation as well as its use as pigment for coloring high molecular weight or ...


9
Wolfgang Holderich, Georg Philip Heitmann, Dietrich Arntz: Method of producing .epsilon.-caprolactam. Degussa Huls Aktiengesellschaft, Smith Gambrell & Russell, April 18, 2000: US06051706 (2 worldwide citation)

A method is disclosed of producing .epsilon.-caprolactam by the Beckmann rearrangement of cyclohexanone oxime using (B) .beta. zeolites as catalyst.


10
Wolfgang Holderich, KoDieter, Werner Bertleff: Preparation of 1,2-dialkoxyethenes. BASF Aktiengesellschaft, Keil & Weinkauf, April 14, 1992: US05105022 (1 worldwide citation)

Dialkoxyethenes of the formula ##STR1## where R.sup.1 to R.sup.4 are identical or different and are each straight-chain or branched alkyl or cycloalkyl or R.sup.2 and R.sup.3 may furthermore be hydrogen, aryl or alkenylaryl, and the aromatic may be substituted by further radicals, such as alkyl, alk ...