Continuous hydrocyanation process using zinc halide promoter
Patent 4705881 Issued on November 10, 1987. Estimated Expiration Date: 
November 17, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 17, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3496217 3564040 3766241 3903120 Hydrocyanation of olefins Recovery of zerovalent nickel complexes Patent #: 4539302 InventorAssigneeApplicationNo. 06/930940 filed on 11/17/1986US Classes:558/338Organic material which contains phosphorus, arsenic, or antimony, in addition to nickel, utilized (e.g., zero-valent nickel complexes, etc.)ExaminersPrimary: Brust, Joseph PaulInternational ClassesC07C 253/00 (20060101)C07C 253/10 (20060101) C07C 253/08 (20060101) C07C 255/04 (20060101) C07C 255/00 (20060101) B01J 31/26 (20060101) B01J 31/30 (20060101) C07B 61/00 (20060101) AbstractProcess for production of dinitriles using zero-valent nickel catalysts having low ligand ratio, and low amounts of zinc halide as the promoter. |
| ||||||||||||||
