Process for the production of unsymmetric and/or symmetric...

Details Process for the production of unsymmetric and/or symmetric... Process for the production of unsymmetric and/or symmetric...

2005-08-16

2005-08-16

Richter, Johann (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

C568S840000

Reexamination Certificate

active

06930195

ABSTRACT:
A process for the production of a dialkyl carbonate and a diol, such as dimethyl carbonate and ethylene glycol, by reacting a feed containing a cyclic carbonate, a hydroxy alkyl carbonate and an aliphatic monohydric alcohol in the presence of a transesterification catalyst is described. In another aspect, a process is described which is particularly useful for producing unsymmetric dialkyl carbonates, such as ethyl methyl carbonate.

REFERENCES:
patent: 3642858 (1972-02-01), Frevel et al.
patent: 4062884 (1977-12-01), Romano et al.
patent: 4181676 (1980-01-01), Buysch et al.
patent: 4218391 (1980-08-01), Romano et al.
patent: 4226778 (1980-10-01), Venturello et al.
patent: 4231937 (1980-11-01), Kao et al.
patent: 4233221 (1980-11-01), Raines et al.
patent: 4325874 (1982-04-01), Jacobson
patent: 4391739 (1983-07-01), Chu
patent: 4434105 (1984-02-01), Buysch et al.
patent: 4661609 (1987-04-01), Knifton
patent: 4686274 (1987-08-01), Harris et al.
patent: 4691041 (1987-09-01), Duranleau et al.
patent: 4895970 (1990-01-01), Harris
patent: 5015753 (1991-05-01), Harris
patent: 5218135 (1993-06-01), Buysch et al.
patent: 5231212 (1993-07-01), Buysch et al.
patent: 5292980 (1994-03-01), Dessau
patent: 5387708 (1995-02-01), Molzahn et al.
patent: 5391803 (1995-02-01), King et al.
patent: 5430170 (1995-07-01), Urano et al.
patent: 5436362 (1995-07-01), Kondoh et al.
patent: 5489703 (1996-02-01), Pacheco et al.
patent: 5498743 (1996-03-01), Shih et al.
patent: 5663480 (1997-09-01), Tsuneki et al.
patent: 5760273 (1998-06-01), Inaba et al.
patent: 5847189 (1998-12-01), Tojo et al.
patent: 6166240 (2000-12-01), Chang et al.
patent: 6573396 (2003-06-01), Buchanan et al.
patent: 2003/0023109 (2003-01-01), Schlosberg et al.
patent: 478 073 (1992-01-01), None
patent: 0638 541 (1995-02-01), None
patent: 54003012 (1979-01-01), None
patent: 3-44354 (1991-02-01), None
patent: 06157409 (1994-03-01), None
patent: 6-107601 (1994-04-01), None
patent: 00 73256 (2000-12-01), None
Cella, James A., et al.,Preparation of Dialkyl Carbonates via the Phase-Transfer-Catalyzed Alkylation of Alkali Metal Carbonate and Bicarbonate Salts, J. Org. Chem., vol. 49, pp. 1122-1125 (1984).
Fujinami, Tatsuo et al.,A Facile Preparation of Dialkyl Carbonates from Potassium Carbonate and Alkyl Bromides by Using Organostannyl Compound as a Catalyst, Chemistry Letters, pp. 749-752, (1981).
Romano, Ugo et al.,Synthesis of Dimethyl Carbonate from Methanol, Carbon Monoxide, and Oxygen Catalyzed by Copper Compounds, Ind. Eng. Chem. Prod. Res. Dev., vol. 19, pp. 396-403, (1980).
Tundo, Pietro et al.,Continuous-Flow Processes under Gas-Liquid Phase-Transfer Catalysis(GL-PTC)Conditions: The Reaction of Dialkyl Carbonates with Phenols, Alcohols, and Mercaptans, Ind. Eng. Chem. Res., vol. 27, pp. 1565-1571, (1988).
Chin, Yu-Ren, et al.,Dimethyl Carbonate from Methanol by Non-Phosgenation Processes, Process Economics Program, PEP Review No. 87-1-4, (Jul. 1988).
Knifton, John F., et al.,Ethylene Glycol-Dimethyl Carbonate Cogeneration, Journal of Molecular Catalysis, vol. 67, pp. 389-399, (1991).
Chang, C.D., Handbook of Heterogenous Catalysis,Methanol to Hydrocarbons, Wiley-VCH: Weinheim, Germany, vol. 4, Chapter 3.7, pp. 1894-1908, (1997).
Watanabe, Yoshiaki et al.,Hydrotalcite-type Materials as Catalysis for the Synthesis of Dimethyl Carbonate from Ethylene Carbonate and Methanol1, Microporous and Mesoporous Materials, vol. 22, pp. 399-407 (1998).

Affiliated with

Also associated with

Rating

Process for the production of unsymmetric and/or symmetric... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of unsymmetric and/or symmetric..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of unsymmetric and/or symmetric... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3500335