Conversion of aldox aldehydes to alcohols

Claim 1

A PROCESS FOR OBTAINING AN ALCOHOL HAVING 2N+2 CARBON ATOMS PER MOLECULE AND A CARBONYL NUMBER OF LESS THAN ABOUT 0.5, N BEING AN INTEGER FROM 2 TO 5 WHICH COMPRISES CONTACTING A CRUDE DEMETALLIZED MIXTURE CONTAINING ALDEHYDES HAVING 2N+2 CARBON ATOMS PER MOLECULE AND UNSATURATED ALDEHYDES, OBTAINED FROM REACTION OF AN OLEFIN HAVING THE FORMULA CNH2N WITH CARBON MONOXIDE AND HYDROGEN AT ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A COBALT AND ZINC-CONTAINING CATALYST AND SUBSEQUENTLY REMOVING RESIDUAL CATALYTIC METALS, IN A FIRST STAGE WITH HYDROGEN AT A PRESSURE OF ABOUT 2000 TO 4000 P.S.I.G. AND AT A TEMPERATURE OF ABOUT 350-400* F. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM SULFIDE, COBALT MOLYBDATE AND COPPER CHROMITE FOR A PERIOD OF 3 TO 6 HOURS TO CONVERT UNSATURATED ALDEHYDES IN SAID CRUDE MIXTURE TO SATURATED ALDEHYDES WITHOUT SUBSTANTIAL FORMATION OF ALCOHOLS, CONTACTING THE THUS HYDROGENATED MIXTURE IN A SECOND STAGE WITH HYDROGEN AT A PRESSURE OF 2000-4000 P.S.I.G. AND TEMPERATURE OF ABOUT 450 TO 525*F. IN THE PRESENCE OF SAID CATALYST FOR A RESIDENCE PERIOD OF 6 TO 12 HOURS TO CONVERT SAID SATURATED ALDEHYDES TO ALCOHOLS.