Title:
PROCESS FOR PREPARING A MIXTURE OF LACTIDE DERIVATIVES
Document Type and Number:
WIPO Patent Application WO/2010/022966
Kind Code:
A3
Abstract:
The present invention relates to three variants for preparing a mixture of cyclic diesters derived from lactic acid and especially a racemate of dilactide. This can proceed, as desired, from the corresponding a-hydroxycarboxylic acids, the corresponding cyclic diesters or oligomers of the corresponding a-hydroxycarboxylic acids.
Inventors:
HAGEN RAINER (DE)
VERWEIJ ADAM BASTIAAN (NL)
MUEHLBAUER UDO (DE)
SCHULZE JOACHIM (DE)
TIETZ WOLFGANG (DE)
GOEHLER KLAUS-DIETER (DE)
VERWEIJ ADAM BASTIAAN (NL)
MUEHLBAUER UDO (DE)
SCHULZE JOACHIM (DE)
TIETZ WOLFGANG (DE)
GOEHLER KLAUS-DIETER (DE)
Application Number:
PCT/EP2009/006252
Publication Date:
June 24, 2010
Filing Date:
August 28, 2009
Export Citation:
Assignee:
UHDE INVENTA FISCHER GMBH (DE)
UHDE GMBH (DE)
HAGEN RAINER (DE)
VERWEIJ ADAM BASTIAAN (NL)
MUEHLBAUER UDO (DE)
SCHULZE JOACHIM (DE)
TIETZ WOLFGANG (DE)
GOEHLER KLAUS-DIETER (DE)
UHDE GMBH (DE)
HAGEN RAINER (DE)
VERWEIJ ADAM BASTIAAN (NL)
MUEHLBAUER UDO (DE)
SCHULZE JOACHIM (DE)
TIETZ WOLFGANG (DE)
GOEHLER KLAUS-DIETER (DE)
International Classes:
C07D319/12; C07B55/00
Domestic Patent References:
| WO2005056509A1 | 2005-06-23 | |||
| WO1988010260A1 | 1988-12-29 |
Foreign References:
| DE4230951A1 | 1994-03-17 | |||
| EP0657447A1 | 1995-06-14 | |||
| US5463086A | 1995-10-31 | |||
| EP1577346A1 | 2005-09-21 | |||
| DE19902879A1 | 2000-08-03 | |||
| US20060014975A1 | 2006-01-19 |
Other References:
See also references of EP 2321294A2
Attorney, Agent or Firm:
REITZLE, H. (Meinig & PartnerTheresienhöhe 13, München, DE)
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