EP 0614453 A4 19940921 - MANUFACTURE OF TRIMETHYLOLPROPANE.
Title (en)
MANUFACTURE OF TRIMETHYLOLPROPANE.
Publication
Application
Priority
- US 9308140 W 19930827
- US 95052492 A 19920925
Abstract (en)
[origin: WO9407831A1] Trimethylolpropane of high purity is efficiently made by mixing the aldol reaction product of formaldehyde and n-butyraldehyde with at least about 20 wt % of a lower alcohol prior to hydrogenation to allow recovery of high purity product by simple distillation. In a less preferred mode, the alcohol may be added after hydrogenation, resulting in a smaller improvement over previous processes.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); C07C 29/141 (2006.01); C07C 29/38 (2006.01); C07C 31/22 (2006.01)
CPC (source: EP)
C07C 29/141 (2013.01); C07C 29/38 (2013.01)
Citation (search report)
- [X] US 5144088 A 19920901 - SALEK JEFFREY S [US], et al
- [X] FR 1230558 A 19600916 - ETS KUHLMANN
- [X] EP 0142090 A2 19850522 - BASF AG [DE]
- [X] DE 3644675 A1 19880714 - RUHRCHEMIE AG [DE]
- [X] DE 1014089 B 19570822 - BASF AG
- [X] DE 2054601 A1 19720510
- [PX] US 5185478 A 19930209 - SALEK JEFFREY S [US], et al
- See references of WO 9407831A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9407831 A1 19940414; CA 2124189 A1 19940414; EP 0614453 A1 19940914; EP 0614453 A4 19940921; JP H07501561 A 19950216
DOCDB simple family (application)
US 9308140 W 19930827; CA 2124189 A 19930827; EP 93920413 A 19930827; JP 50905294 A 19930827