Fluoroolefin manufacturing process

Details Fluoroolefin manufacturing process Fluoroolefin manufacturing process

1998-08-06

2000-02-29

Richter, Johann

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

Organic compounds

Halogen containing

570155, 570156, 570171, C07C 2118, C07C 1725

Patent

active

06031141&

ABSTRACT:
This invention provides a process for the manufacture of a fluoroolefin of the formula (R.sup.1).sub.2 C.dbd.C(R.sup.1).sub.2 wherein each R.sup.1 is independently selected from the group consisting of --H, --F, --CF.sub.3, --CHF.sub.2, --CH.sub.2 F, --C.sub.2 F.sub.5, --C.sub.2 HF.sub.4 and --C.sub.2 H.sub.2 F.sub.3, provided that at least one R.sup.1 is not --H. The process comprises contacting a hydrofluorocarbon of the formula (R.sup.1).sub.2 CHCF(R.sup.1).sub.2 with a catalyst comprising cubic chromium trifluoride, i.e., a chromium trifluoride having an X-ray diffraction powder pattern shown in Table I, at a temperature of from about 200.degree. C. to about 500.degree. C.

REFERENCES:
patent: 2599631 (1952-06-01), Harmon
patent: 2745886 (1956-05-01), Ruh et al.
patent: 3673113 (1972-06-01), Naito et al.
patent: 4034070 (1977-07-01), Wojtowicz et al.
patent: 4053530 (1977-10-01), Schindel
patent: 4465786 (1984-08-01), Zimmer et al.
patent: 4741893 (1988-05-01), Watanabe et al.
patent: 5461177 (1995-10-01), Manzer et al.
P. Daniel et al., Raman-scattering study of crystallized MF3 compounds (M=A1, Cr, GA, V, Fe, In): An approach to the short-range-order force constants, The American Physical Society, 42, 10545-10552, 1 Dec. 1990.
Keshav N. Shrivastava, Theory of the -electron spin density dur to the Cr3+ ion and Cr3+ ion pair in a cubic fluoride lattice, Physical Review, 20, 5375-5378, Dec. 15, 1979.
Kerro Knox, Structure of Chromium (III) Fluoride, Short Communications, 13, 507-508, 1960.
Ullman's Encyclopedia of Industrial Chemistry, Fifth Ed., vol. A7, 83 (1977).
L.E. Manzer et al., Adv. Catal., 39, 329-350, 1993.

Affiliated with

Also associated with

Rating

Fluoroolefin manufacturing process does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-684556