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Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step. The first bottoms stream is distilled to produce a bottoms product stream comprising diisobutylene and a second overhead stream comprising tertiary butyl alcohol and diisobutylene.he reaction product stream, comprising diisobutylene, isobutylene, TBA, and water, is purified by a process a shown in. . The reaction product stream is passed via line 11 to a first distillation tower 10. Tower 10 contains 35 ideal stages, 11 above feed and 24 below feed.
The total annual demand for Butyl Polymers is ~650,000 Metric Tons. Photomicrograph of Tire Innerliner Innerliner Chemistry and Manufacturing Process Butyl Rubber typically contains about 98% polyisobutylene with 2% isoprene distributed randomly in the polymer chain.lurry aid (zinc or calcium stearate) and antioxidant are introduced to the hot water/polymer slurry to stabilize the polymer and prevent agglomeration. Then the polymer is screened from the hot water slurry and dried in a series of extrusion dewatering and drying steps.