Static control in olefin polymerization

US6111034A · kind A · utility

Assignee

• Union Carbide Chemicals & Plastics Technology LLC · US

Inventors

• Mark G. Goode · Hurricane, US
• Clark C. Williams · Jersey Village, US
• Fathi David Hussein · Cross Lanes, US
• Thomas J. McNeil · Hurricane, US
• Kiu H. Lee · South Charleston, US

Key dates

• Filing date: Dec 31, 1998
• Grant date: Aug 29, 2000
• Expiry date: Dec 31, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Addition of water to a gas phase olefin polymerization reactor in amounts greater than 3 ppmv permits an increase in the level of condensable gas and facilitates operation of the reactor at an elevated dew point by ameliorating electrostatic phenomena in the reactor; the process inhibits sheeting.