Method for producing tricyclodecandialdehyde

Details Method for producing tricyclodecandialdehyde Method for producing tricyclodecandialdehyde

2008-01-22

2008-01-22

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S816000, C564S446000

Reexamination Certificate

active

10581802

ABSTRACT:
Process for preparing tricyclodecanedialdehyde by hydroformylation of dicyclopentadiene by means of a CO/H2mixture at elevated temperature and under superatmospheric pressure in the presence of a rhodium catalyst which has not been modified by means of a ligand and is homogeneously dissolved in the hydroformylation medium, wherein the hydroformylation is carried out at a pressure of from 200 to 350 bar in at least two reaction zones, with a reaction temperature of from 80 to 120° C. being set in a first reaction zone and a reaction temperature of from 120 to 150° C. being set in a reaction zone following this reaction zone, with the proviso that the reaction temperature in the subsequent reaction zone is at least 5° C. higher than in the preceding reaction zone.

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