Jeffrey T Andress

US Patent:

7462747, Dec 9, 2008

Filed:

Apr 30, 2007

Appl. No.:

11/797007

Inventors:

Timan Sirch - Schifferstadt, DE
Michael Steiniger - Neustadt, DE
Steffen Maas - Bubenheim, DE
Stefan Rittinger - Mannheim, DE
Stephan Schlitter - Limburgerhof, DE
Maria Guixa - Mannheim, DE
Todd C. Spengeman - Missouri City TX, US
Jeffrey T. Andress - Lake Jackson TX, US

Assignee:

BASF Aktiengesellschaft - Ludwigshafen

International Classification:

C07C 37/20
C07C 27/04
C07C 29/14

US Classification:

568799, 568862, 568891

Abstract:

The invention relates to a process for preparing polymethylol compounds of the formula (I)In this way of carrying out the process, the formation of by-products can advantageously be prevented in a targeted manner and the yield of the desired polymethylol compound can thereby be increased.

US Patent:

8247580, Aug 21, 2012

Filed:

Oct 28, 2008

Appl. No.:

12/741383

Inventors:

Rolf Pinkos - Bad Duerkheim, DE
Gerd-Dieter Tebben - Mannheim, DE
Thomas Krug - Worms, DE
Tilman Sirch - Schifferstadt, DE
Todd C Spengeman - Sugar Land TX, US
Stephanie A. Bejune - Angleton TX, US
Jeffrey T. Andress - Lake Jackson TX, US
Todd Gasiorowski - Lake Jackson TX, US

Assignee:

BASF SE - Ludwigshafen

International Classification:

C07D 313/00

US Classification:

549266

Abstract:

The present invention provides a process for preparing ε-caprolactone in a purity of more than 99% by cyclizing 6-hydroxycaproic esters in the liquid phase at from 150 to 400 C. and from 1 to 1020 hPa abs. , and removing and condensing the compounds which are volatile under cyclization conditions, which comprises thermally treating the remaining bottom product of the cyclization in at least one further reactor, removing and condensing volatile compounds and obtaining ε-caprolactone by distillation from the condensates.

US Patent:

20080004475, Jan 3, 2008

Filed:

Jun 28, 2006

Appl. No.:

11/476161

Inventors:

Tilman Sirch - Schifferstadt, DE
Michael Steiniger - Neustadt, DE
Steffen Mass - Bubenheim, DE
Stefan Rittinger - Mannheim, DE
Stephan Schlitter - Limburgerhof, DE
Ludwig E. Heck - Edingen-Neckarhausen, DE
Todd C. Spengeman - Missouri City TX, US
Jeffrey T. Andress - Lake Jackson TX, US

Assignee:

BASF Aktiengesellschaft - Ludwigshafen

International Classification:

C07C 29/74

US Classification:

568854

Abstract:

A process is provided for the preparation of polymethylol compounds of formula (I):in which the radicals R independently of one another are each a further methylol group, an alkyl group having from 1 to 22 C atoms or an aryl or aralkyl group having from 6 to 22 C atoms, byThis procedure advantageously makes it possible specifically to prevent the formation of by-products and hence to increase the yield of the desired polymethylol compound.We have found that this object is achieved by a process for the preparation of polymethylol compounds of formula (I):in which the radicals R independently of one another are each a further methylol group, an alkyl group having from 1 to 22 C atoms or an aryl or aralkyl group having from 6 to 22 C atoms, byIn the aldol reaction, a partially converted starting compound of formula (III):can also be formed in which the radicals R independently of one another are each hydrogen or are as defined above. According to the invention, this partially converted starting compound of formula (III), together with the desired alkanal of formula (II), is separated from the other by-products and the unreacted starting compounds and reacted again in an aldol reaction with formaldehyde having a methanol content of 0.35% by weight to 0.5% by weight, using tertiary amines as a catalyst.