Title:
PROCESS FOR PREPARING FLUORINATED ESTERS BY GAS CHROMATOGRAPHY
Document Type and Number:
WIPO Patent Application WO/2002/040437
Kind Code:
A1
Abstract:
Determining accurately the amount of a fluorinated ester in the preparation thereof or determining accurately the consumption of a fluorinated ester and the amount of a formed substance in the chemical transformation of the ester enables efficient preparation of the objective substance in a yield equal to or higher than an objective level. That is, a process for preparing a fluorinated ester from starting compounds by a chemical reaction, characterized in that the reaction is continued until the yield of the ester reaches a predetermined level as determined by gas chromatography with a nonpolar column.
Inventors:
KAWAHARA KENGO (JP)
ISEMURA TSUGUHIDE (JP)
OKAZOE TAKASHI (JP)
ISEMURA TSUGUHIDE (JP)
OKAZOE TAKASHI (JP)
Application Number:
PCT/JP2001/010116
Publication Date:
May 23, 2002
Filing Date:
November 20, 2001
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
KAWAHARA KENGO (JP)
ISEMURA TSUGUHIDE (JP)
OKAZOE TAKASHI (JP)
KAWAHARA KENGO (JP)
ISEMURA TSUGUHIDE (JP)
OKAZOE TAKASHI (JP)
International Classes:
G01N30/06; C07C67/287; C07C71/00; G01N30/56; G01N30/88; G01N30/02; (IPC1-7): C07C67/287; C07C51/09; C07C59/135; C07C69/708; G01N30/04; G01N30/86; G01N30/88
Domestic Patent References:
| WO2000056694A1 | 2000-09-28 | |||
| WO1990006296A1 | 1990-06-14 |
Foreign References:
| JPH0712790A | 1995-01-17 | |||
| JPH05256833A | 1993-10-08 |
Other References:
See also references of EP 1336601A4
Attorney, Agent or Firm:
Senmyo, Kenji (Kanda-Higashimatsushitacho Chiyoda-ku, Tokyo, JP)
Download PDF:
Previous Patent: ADSORPTIVE SEPARATION PROCESS FOR RECOVERY OF PARA-XYLENE
Next Patent: PREPARATION OF ENANTIOMERICALLY PURE HYDROXY ESTERS AND ACIDS
Next Patent: PREPARATION OF ENANTIOMERICALLY PURE HYDROXY ESTERS AND ACIDS