Process for the manufacture of 1,1,1,3,3-pentafluoropropane

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

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C570S134000

Reexamination Certificate

active

07629495

ABSTRACT:
A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the substantial absence of metal catalyst. Another embodiment provides for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the presence of an amine hydrofluoride complex and a metal catalyst.

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G. Aranda, “Obtention de fluoroalcools arylaliphatiques par la voie des epoxydes et des fluorhydrates d'amines [Preparation of araliphatic fluoro alcohols from epoxides and amine hydrofluorides] ”, Bulletin de la Societe Chimique de France, 1965, vol. 6, pp. 1890-1892; included CAS abstract in English (4 pp.).
R. Franz, “Ueber trishydrofluoride tertiaerer amine und ihren einsatz als fluorierungsmittel [Tertiary Amine tris (hydroflurides) and their use as fluorinating agents] ”, Journal of Fluorine Chemistry, 1980, pp. 423-434, vol. 15, Elsevier Sequoia S.A, Lausanne - Printed in Netherlands; included CAS abstract in English (13 pp.).

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