Title:
IMPROVED REFINING PROCESSES
Document Type and Number:
WIPO Patent Application WO2001085666
Kind Code:
A3
Abstract:
Crude C1-C8 alkyl (meth)acrylate streams, for example, from the reaction of butanol and (meth)acrylic acid, are refined using a splitter distillation column to yield a C1-C8 alkyl (meth)acrylate- and heavies-containing bottoms fraction and an overhead fraction containing C1-C8 alkyl acetate, C1-C8 alcohol and C1-C8 alkyl (meth)acrylate. A stream comprising a water miscible organic solvent is introduced into the splitter distillation column in an amount sufficient to prevent the formation of water layers in the splitter distillation column and thereby reduce fouling in the splitter distillation column. The bottoms fraction is then subjected to separation, for example, by distillation, to separate heavies from the bottoms fractions and to recover C1-C8 alkyl (meth)acrylate.
Inventors:
BOUDREAUX CHRIS NICHOLAS
KUO ALEX CHIAHUEI
LUCE STEVEN R
MANN TIMOTHY JOBE
HO FUNGAU
KUO ALEX CHIAHUEI
LUCE STEVEN R
MANN TIMOTHY JOBE
HO FUNGAU
Application Number:
PCT/US2001/014984
Publication Date:
August 29, 2002
Filing Date:
May 09, 2001
Export Citation:
Assignee:
UNION CARBIDE CHEM PLASTIC (US)
International Classes:
C07C67/08; C07C67/54; (IPC1-7): C07C69/54; C07C67/08; C07C67/54
Domestic Patent References:
| WO1998052904A1 | 1998-11-26 | |||
| WO1998012168A1 | 1998-03-26 |
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