Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent...
Patent
1977-03-25
1979-09-18
Bascomb, Jr., Wilbur L.
Distillation: processes, separatory
Addition of material to distilland to inhibit or prevent...
203 38, 203 62, 260654H, 2606525R, 260654S, 423488, 585 3, 585952, B01D 334, C07C 718
Patent
active
041682106
ABSTRACT:
A method for reducing losses due to reactions between hydrogen halides and olefinically unsaturated organic compounds in the presence of transition metals which act as catalysts for hydrohalogenation in mixtures containing same by adding to said mixtures a compound selected from the class consisting of alkyl diketones. The present invention is of particular value in the separation of components of said mixtures by distillation, but may also be usefully employed in any operation in which these mixtures are maintained in the presence of said catalytic materials. The present method offers advantages over the prior art because of the relative low toxicity and flammability of diketones and the fact that no undesirable solids are formed to foul process equipment as with some known methods.
REFERENCES:
patent: 2376075 (1945-05-01), Morris
patent: 2517895 (1950-08-01), Larchar
patent: 2615791 (1952-10-01), Raley
patent: 2628934 (1953-02-01), Raley et al.
patent: 2719181 (1955-09-01), Cole
patent: 3976705 (1976-08-01), Lukes et al.
Boozalis Theodore S.
Ivy John B.
Ancona A. C.
Bascomb, Jr. Wilbur L.
The Dow Chemical Company
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