Title:
METHOD FOR PREPARING DIALKYL CARBONATE
Document Type and Number:
WIPO Patent Application WO/2012/144856
Kind Code:
A2
Abstract:
The present invention relates to a method for preparing dialkyl carbonate, which enables the preparation of a dialkyl carbonate, such as dimethyl carbonate, at a higher yield rate in an eco-friendly and economically advantageous manner while reducing the generation of by-products. The method for preparing dialkyl carbonate comprises a step of reacting urea, alkyl carbamate having 1 to 3 carbon atoms or a mixture thereof, and a monovalent alcohol having 1 to 3 carbon atoms in the presence of a room-temperature ionic liquid and a catalyst comprising salts of transition metals or rare-earth metals.
Inventors:
BAIK JOON HYUN (KR)
KOH JAE CHEON (KR)
KIM KYONG TAE (KR)
KOH DONG JUN (KR)
SA YOUNG SAM (KR)
KIM YUN MIN (KR)
KIM CHUL UNG (KR)
KOH JAE CHEON (KR)
KIM KYONG TAE (KR)
KOH DONG JUN (KR)
SA YOUNG SAM (KR)
KIM YUN MIN (KR)
KIM CHUL UNG (KR)
Application Number:
PCT/KR2012/003070
Publication Date:
October 26, 2012
Filing Date:
April 20, 2012
Export Citation:
Assignee:
RES INST IND SCIENCE & TECH (KR)
BAIK JOON HYUN (KR)
KOH JAE CHEON (KR)
KIM KYONG TAE (KR)
KOH DONG JUN (KR)
SA YOUNG SAM (KR)
KIM YUN MIN (KR)
KIM CHUL UNG (KR)
BAIK JOON HYUN (KR)
KOH JAE CHEON (KR)
KIM KYONG TAE (KR)
KOH DONG JUN (KR)
SA YOUNG SAM (KR)
KIM YUN MIN (KR)
KIM CHUL UNG (KR)
International Classes:
C07C68/06; C07C69/96
Domestic Patent References:
| WO1995017369A1 | 1995-06-29 |
Foreign References:
| US6010976A | 2000-01-04 | |||
| US7271120B2 | 2007-09-18 | |||
| US5534649A | 1996-07-09 | |||
| KR101102537B1 | 2012-01-04 |
Other References:
S. BOWDEN; E. BUTHER, J. CHEM. SOC., vol. 78, 1939
PETER BALL; HEINZ FULLMANN; WALTER HEINTZ: "Carbonates and Polycarbonates from Urea and Alcohol", ANGEW. CHEM. INT. ED. ENGL., vol. 19, no. 9, 1980, pages 718 - 720, XP055133510, DOI: doi:10.1002/anie.198007181
YOSHIO ONO: "Dimethyl carbonate for environmentally benign reaction", PURE & APPL. CHEM., vol. 68, no. 2, 1996, pages 367 - 375
See also references of EP 2700629A4
PETER BALL; HEINZ FULLMANN; WALTER HEINTZ: "Carbonates and Polycarbonates from Urea and Alcohol", ANGEW. CHEM. INT. ED. ENGL., vol. 19, no. 9, 1980, pages 718 - 720, XP055133510, DOI: doi:10.1002/anie.198007181
YOSHIO ONO: "Dimethyl carbonate for environmentally benign reaction", PURE & APPL. CHEM., vol. 68, no. 2, 1996, pages 367 - 375
See also references of EP 2700629A4
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (649-10 Yoksam-dong, Kangnam-ku, Seoul 135-080, KR)
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Claims: