Appeal No. 2001-1234
Application 08/658,983
THE INVENTION
The appellants’ claimed invention is directed toward a
process for making decabromodiphenylethane wherein a mixture of
bromine and molten diphenylethane is fed to a stirrable reaction
mass containing bromine and a bromination catalyst. Claim 50 is
illustrative:
50. A process for the manufacture of a
decabromodiphenylethane product, which process comprises:
feeding a mixture which is,
(i) formed from at least bromine and
molten diphenylethane in a molar
ratio of bromine to molten
diphenylethane which is within the
range of from about 5:1 to about
30:1, and
(ii) is substantially free of a
brominating catalyst,
to a stirrable reaction mass
comprising bromine and a catalytic
amount of a bromination catalyst,
such reaction mass being at a
temperature which is within the
range of from about 30 to about
80/C.
THE REFERENCES
Ransford 5,030,778 Jul. 9, 1991
Produits Chimiques 1,411,524 Oct. 29, 1975
Ugine Kuhlmann (GB ‘524)
(Great Britain patent specification)
2
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007