The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 1994
Filed:
May. 18, 1993
Agapios K Agapiou, Humble, TX (US);
Steve K Ackerman, Baytown, TX (US);
David M LaBorde, Huffman, TX (US);
Marc L DeChellis, Houston, TX (US);
Exxon Chemical Patents Inc., Linden, NJ (US);
Abstract
A process for deactivating Ziegler-Natta and metallocene catalysts or catalyst systems 'such systems are typically used for olefin polymerization'. The process includes heating the active catalyst or catalyst system to a temperature sufficient to drive off volatile constituents, and to form complexes and compounds that are non-reactive or less reactive with ambient air than the active catalyst or catalyst system. The process includes steps for safe deactivation including scrubbing to substantially eliminate corrosive compounds, and burning volatile chemicals in a flare. This process essentially eliminates the production of hazardous classification waste from conventional water catalyst deactivation techniques.