Cyclic isoprene process
Abstract
Abstract A MULTI-STEP SYNTHESIS FOR THE PRODUCTION OF ISOPRENE IS PROVIDED WHEREIN CERTAIN BY-PRODUCTION ARE RECYCLED IN ORDER TO ACHIEVE A BALANCED, ECONOMICAL PROCESS. THE PROCESS IS PRINCIPALLY CHARACTERIZED BY THE STEPS OF OXIDIZING ISOBUTANE TO FORM T-BUTYL HYDROPEROXIDE WHICH IS REACTED WITH PROPYLENE TO GIVE T-BUTYL ALCOHOL AND THE VALUABLE BY-PRODUCT PROPYLENE OXIDE. THE ALCOHOL, AFTER CONVERSION TO T-BUTYL CHLORIDE IS REACTED WITH METHYLPENTANES TO GIVE ISOBUTANE AND METHYLCHLOROPENTANES. THESE LATTER COMPOUNDS ARE THEN DEHYDROCHLORINATED TO YIELD HCL AND METHYLPENTENES WHICH ARE PYROLYZED TO FORM ISOPRENE. THE ISOBUTANE CO-PRODUCED WITH THE METHYLCHLOROLPENTANES IS DESIRABLY RECYCLED TO THE FIRST STAGE OXIDATION STEP, WHILE THE HCL FORMED IN THE NEXT-TO-LAST STEP MAY BE EMPLOYED IN THE FURTHER FORMATION OF T-BUTYL CHLORIDE.
Inventors
- 👤 A Schneider
Bibliographic Details
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