Disproportionation of unsaturated acids

Details Disproportionation of unsaturated acids Disproportionation of unsaturated acids

1983-01-31

1984-11-06

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260407, 260 97, 260 975, 585531, C09F 104, C09F 708

Patent

active

044811454

ABSTRACT:
Unsaturated acids in rosin or tall oil are disproportionated by heating the rosin or tall oil with a catalyst comprising iodine and an iron compound using ammonia, an ammonium salt or an amine as an additional component of the catalyst. Use of this additional component gives a remarkable and unexpected increase in reaction rate and enables the preparation of a disproportionated rosin containing 0.5% or less residual abietic acid, as measured by ultraviolet spectroscopy.

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