Basf Se Corporation

Michael Ludwik Lejkowski

Michael Limbach

Ronald Lindner

Nicolai Tonio Woerz

Stephan Andreas Schunk

Marco Hartmann

Andrei-Nicolae Parvulescu

Sirus Zarbakhsh

Peter Deglmann

Achim Loeffler

Johannes Lieberknecht

Kazuhiko Amakawa

Kerstin Wiss

Yong Liu

Yong Liang Liu

Miriam Bru Roig

Armin Lange De Oliveira

Alvaro Gordillo

Lukas Schulz

Nuria Huguet Subiela

Till Christian Brueggemann

Lothar Riebel

Michael Goebel

Takeharu Kageyama

Ulrich Mueller

Martin Dieterle

Christian Walsdorff

Mathias Feyen

Ivana Jevtovikj

Julia Frauke Grosse-Willerich

Severine Lavy

Julia Frauke Grosse

Gabriella Eva Bodizs

Cornelia Futter

Jörg Rother

Sabine Chantal Eileen Stieber

Catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, comprising reacting an alkene and carbon dioxide in the presence of a carboxylation catalyst and releasing the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt with a base, the carboxylation catalyst being a transition metal complex, which comprises a structurally constrained bidentate P,X ligand, wherein X is selected from the group consisting of P, N, O, and carbene, the P and X atom are separated by 2 to 4 bridging atoms, and wherein the bridging atoms are part of at least one 5- to 7-membered cyclic substructure. A further catalytic processes for preparing &#x3b1;,&#x3b2;ethylenically unsaturated carboxylic acid derivatives from COand an alkene is provided.

Process for preparing an unsaturated carboxylic acid salt

The invention relates to a process for preparing acrylic acid from formaldehyde and acetic acid, comprising

Process for preparing acrylic acid from formaldehyde and acetic acid

Catalytic process for preparing an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, wherein an alkene and carbon dioxide are reacted in the presence of a carboxylation catalyst and in the presence of a specific aryloxide to obtain the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid salt, the carboxylation catalyst being a transition metal complex. The process allows for efficient preparation of &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid derivatives from COand an alkene.

Process for preparing an unsaturated carboxylic acid salt using an aryloxide

A process for preparing acrylic acid from formaldehyde and acetic acid, is performed by (i) providing a gaseous stream S1 comprising formaldehyde, acetic acid, oxygen and water, where the formaldehyde content of stream S1 is in the range from 8% to 18% by volume, based on the total volume of stream S1, the ratio of the volumes of acetic acid to formaldehyde is in the range from 0.6:1 to 1.1:1, and the molar ratio of oxygen to the total amount of organic carbon is in the range from 0.02:1 to 0.15:1; and (ii) contacting stream S1 with an aldol condensation catalyst in a reaction zone to obtain a gaseous stream S2 containing acrylic acid.

Process for preparing acrylic acid

The present invention relates to a process for preparing acrylic acid from acetic acid and formaldehyde, which comprises (a) provision of a stream Scomprising acetic acid and formaldehyde, where the molar ratio of acetic acid to formaldehyde in the stream Sis in the range from 0.5:1 to 2:1; (b) contacting of the stream Swith an aldol condensation catalyst comprising vanadium, phosphorus and oxygen to give a stream Scomprising acrylic acid, where, in (b), the space velocity WHSV is in the range from 0.35 to 7.0 kg/kg/h.

A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YOand AlO, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.

Process for preparing acrylic acid using an alkali metal-free and alkaline earth metal-free zeolitic material

The present invention relates to a process for organocatalytic ring-opening polymerization of at least one monomer M suitable for ring-opening polymerization, or of mixtures thereof, wherein, in a step (i), at least one N-heterocyclic compound is subjected in the presence of at least one Zerevitinov-active compound Z1 to a temperature of at least 80&#xb0; C. for a period of at least 30 seconds and, in a step (ii), the monomer M is added and reacted.

Process for organocatalytic ring-opening polymerization

The present invention relates to a process for preparing acrylic acid comprising (i) providing a stream comprising a formaldehyde source and acetic acid and (ii) contacting this stream with an aldol condensation catalyst comprising a zeolitic material, wherein the framework structure of the zeolitic material in (ii) includes Si and O, and has a molar Al:Si ratio of 0:1 to 0.001:1, and wherein the framework structure of the zeolitic material in (ii), in addition to Si and any Al, comprises one or more elements selected from the group consisting of tetravalent elements Y other than Si and trivalent elements X other than Al.

Process for preparing acrylic acid using an aluminum-free zeolitic material

The present invention relates to a process for preparing polyetherols by catalytic ring-opening polymerization, wherein at least one nitrogen-containing cyclic precatalyst compound is used.

Process for preparing polyether polyols

In a process for preparing an alkali metal or alkaline earth metal salt of an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid, a) a transition metal-alkene complex is reacted with COto give a metallalactone, b) the metallalactone is reacted with a base to give an adduct of the alkali metal or alkaline earth metal salt of the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid with the transition metal complex, and c) the adduct is reacted with an alkene to release the alkali metal or alkaline earth metal salt of the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid and regenerate the transition metal-alkene complex. The base is selected from alkali metal or alkaline earth metal hydroxides and alkali metal or alkaline earth metal superbases. The alkene is, for example, ethene. The transition metal complex comprises, for example, nickel and a bidentate P,P, P,N, P,O or P,carbene ligand, such as 1,2-bis(di-tert-butylphosphino)ethane.

Preparation of &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic salts by catalytic carboxylation of alkenes

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Mannheim, Germany

Michael Ludwik Lejkowski