Title:
PREPARATION OF KETENE DIMER
Document Type and Number:
Japanese Patent JP2610578
Kind Code:
B2
Abstract:
PURPOSE: To provide a method for preparing a ketene dimer in high yield and purity with high productivity in the substantial absence of organic solvents.
CONSTITUTION: The method for preparing a ketene dimer comprises reacting an fatty acid halide with a tert. amine (which is used as a reactant and a solvent/diluent). In the process at least 1.15 mole of the tert. amine is used per mole of the fatty acid halide and the process is carried out in the substantial absence of an additional solvent, whereby the produced ketene dimer is obtained by stripping of the tert. amine followed by separation of formed crystals of the tert. amine hydrogen halide by acid extraction.
Inventors:
Paul Stuart Macintosh
Application Number:
JP4178994A
Publication Date:
May 14, 1997
Filing Date:
February 17, 1994
Export Citation:
Assignee:
Eka Nobel Akcheborag
International Classes:
C07C45/89; C07C49/88; C07D305/12; C07D315/00; (IPC1-7): C07D305/12; C07C45/89; C07C49/88
Domestic Patent References:
| JP5271212A |
Attorney, Agent or Firm:
Tatsuo Ito (1 outside)