Method of preparing unsaturated dinitriles

Abstract

Abstract 1. A PROCESS FOR THE PREPARATION OF UNSATURATED DINITRILES WHICH COMPRISES CONTACTING UNDER SUITABLE REACTION CONDITIONS AN UNSATURATED MONONITRILE, AN OLEFIN, AND A MONOADDUCT REACTION PRODUCT OF SAID OLEFIN AND SAID UNSATURATED NITRILE TO FORM AN UNSATURATED DINITRILE REACTION PRODUCT; SAID UNSATURATED MONONITRILE HAVING FROM 3 TO 10 CARBON ATOMS PER MOLECULE AND BEING REPRESENTED BY THE FORMULA RCH = CR - CN WHEREIN EACH R IS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARY, HYDROCARNYL RADICALS AND COMBINATIONS THEREOF AND HYDROGEN; SAID OLEFIN HAVING FROM 3 TO 12 CARBON ATOMS PER MOLECULE AND FROM 1 TO 2 ETHYLENICALLY UNSATURATED, NONCONJUGATED DOUBLE BONDS AS THE SOLE ALIPHATIC UNSATURATION AND HAVING JOINED TO ONE OF THE ETHYLENICALLY UNSATURATED DOUBLE BONDED CARBON ATOMS A CARBON ATOM HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED THERETO, THE DOUBLE BONDED CARBON ATOMS OF SAID OLEFIN BEING FREE OF CYANO GROUPS; WHEREIN DURING SUBSTANTIALLY THE ENTIRE REACTION PERIOD THE MOLE RATION OF THE MONOADDUCT REACTION PRODUCT TO SAID OLEFIN IS WITHIN THE RANGE OF ABOUT 5 TO 1 TO ABOUT 0.2 TO 1 AND THE MOL RATIO OF THE NONOADDUCT REACTION PRODUCT TO SAID UNSATURATED MONONITRILE IS WITHIN THE RANGE OF ABOUT 10 TO 1 TO ABOUT 0.2 TO 1; AND RECOVERING FROM THE RESULTING REACTION EFFLUENT SAID UNSATURATED DINTRILE REACTION PRODUCT.

Inventors

• 👤 S Turk
• 👤 C Drake

Bibliographic Details