Separation of triethylaluminum from olefin mixtures by means of membrane permeation

Claim 1

IN A PROCESS FOR THE MANUFACTURE OF ALPHA-OLEFINS WHEREBY AN ALUMINUM COMPOUJND CONTAINING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKYL, -O-ALKYUL, AND -S-ALKYL IS REACTED WITH A LOW MOLECULAR WEIGHT MONO-1-OLEFIN TO PROVIDE A GROWTH PRODUCT WHICH GROWTH PRODUCT IS THEN REACTED WITH AN ADDITIONAL QUANTITY OF A LOW MOLECULAR WEIGHT MONO-1-OLEFIN TO YIELD A REACTION MIXTURE OF SAID ALPHA-OLEFINS AND A DISPLACEMENT PRODUCT CONSISTING ESSENTIALLY OF AN ALKYLALUMINUM COMPOUND WHEREIN THE ALKYL PORTION THEREOF CORRESPONDS IN CARBON CHAIN LENGTH TO THAT OF THE MONO-OLEFIN EMPLOYED IN THE DISPLACEMENT REACTION; THE IMPROVEMENT OF EFFECTING SEPARATION OF SAID ALPHA-OLEFINS FROM SAID DISPLACEMENT PRODUCT WHICH COMPRISES CONTACTING UNDER DIALYSIS CONDITIONS A CHEMICALLY RESISTANT, SEMI-PERMEABLE PLASTIC MEMBRANE WITH SAID MIXTURE AND RECOVERING AS THE PEPRMEATE ALPHAOLEFINS CONTAINING A SUBSTANTIALLY LOWER CONCENTRATION OF SAID DISPLACEMENT PRODUCT THAN IS PRESENT IN SAID MIXTURE.