Catalytic formation of diarylcarbonates

Details Catalytic formation of diarylcarbonates Catalytic formation of diarylcarbonates

1992-01-30

1993-08-24

Prescott, Arthur C.

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

Organic compounds

Carbonate esters

544357, 544401, C07C 6800

Patent

active

052391051

ABSTRACT:
Diphenylcarbonate is produced by contacting phenol with phosgene or phenylchloroformate or mixture thereof in the presence of one or more heterogeneous catalysts. The catalysts include Group VB metal oxides: silicates of Groups IIA, IIIB, IVB, VB, and the lanthanide and actinide metals: tungsten oxides: and clays. The more preferred catalysts are silicates of yttrium, titanium, or zirconium.

REFERENCES:
patent: 2362865 (1944-11-01), Tryon et al.
patent: 3576838 (1971-04-01), Urness et al.
patent: 4045464 (1977-08-01), Romano et al.
patent: 4182726 (1980-01-01), Illuminati et al.
patent: 4410464 (1983-10-01), Hallgren
patent: 4487962 (1984-12-01), Krabetz et al.
patent: 4552704 (1985-11-01), Mark
patent: 4609501 (1986-09-01), Mark
patent: 4927931 (1990-05-01), Molzahn et al.
patent: 4983735 (1991-01-01), Hartwell et al.
patent: 4996363 (1991-02-01), Bowman et al.
patent: 5034557 (1991-07-01), Kiso et al.
patent: 5073635 (1991-12-01), Bowman et al.
Japanese Kokai No. 54,125,617 of Mitsubishi Chem. Ind. KK (Sep. 29, 1979).
Abrams, "Carbonic and Chloroformic Esters" Kirk-Othmer Encyl. of Chemical Technology, 3d Ed., John Wiley & Sons, Inc., vol. 4 (1978) pp. 758-771.
Matzner et al., "The Chemistry of Chloroformates" Chem. Rev., vol. 64 (1964), pp. 645-687 Kiso et al., in CA 112: 157845h (1990).
CA 98: 106998r of Asahi Chemical Industry Company (1983).
Derwent Abstract No. 07873C/05 (1987) of French Patent No. 2,422,621 to General Electric Co.
Derwent Abstract No. 83-729852/32 (1983) of DE 3,203,190 of Bayer AG.
Derwent Abstract No. 89-230848/32 of Japan Kokai, 165,551 of Asahi Chem. Ind. KK (1989).

Affiliated with

Also associated with

Rating

Catalytic formation of diarylcarbonates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic formation of diarylcarbonates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic formation of diarylcarbonates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-830576