ApplicationNo. 05/648709 filed on 01/13/1976
US Classes:558/377, A nitrile reactant and a second reactant each contain an acyclic or alicyclic carbon to carbon double bond558/457A carbon in the chain is multiple bonded to carbon (e.g., 1,4 dicyanobutene, etc.)
ExaminersPrimary: Brust, Joseph Paul
AbstractIn processes of preparing unsaturated dinitriles from olefins, unsaturated mononitriles, and a monoadduct reaction product of an olefin and an unsaturated mononitrile in which undesirable internally unsaturated monoadduct is formed, the improvement of inhibiting the formation of internally unsaturated monoadduct by decomposing at least a portion of the recycle stream of monoadduct to form olefin and unsaturated mononitrile, and passing the thus-formed olefin and unsaturated mononitrile to the reaction.