Eastman Chemical Company

Max Statman

Jeffrey James Vanderbilt

William A Ames

James H Scott

Robert E Holliday

Horst K Seeger

Alden E Blood

Luis A Pagan

Athey C Stutler

Timothy J McKeon

Gregory T Slemons

A process for the production of elastomeric polypropylene is disclosed. The process entails contacting the propylene monomer neat or in an unreactive hydrocarbon solvent, with a catalyst in a recirculated, stirred reactor at a temperature of about 60.degree. to 80.degree. C. thereby producing elastomeric polypropylene. The reactor contents are in the slurry/solution phase and are essentially free of catalyst poisons. The reactor is capable of recirculating contents that are very viscous such that the reactor contents are well mixed while a portion of the contents of the reactor containing propylene, any solvent, and elastomeric polypropylene are continually removed by the use of a high viscosity pump to recover the elastomeric polypropylene.

Process for the synthesis of elastomeric polypropylene

Alkyl methacrylates are obtained free of impurities such as alkyl butyrates and assorted alkyl iodides by the partial crystallization of the crude alkyl methacrylate composition and subsequently contacting said crystals of alkyl methacrylate with liquid alkyl methacrylate to thereby free the crystals of occluded impurities.

Process for purification of alkyl methacrylates

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Longview, TX, United States of America

Max Statman