Post-reactor process for treating polymers prepared in a gas phase polymerization in the presence of an inert particulate material

US6214903A · kind A · utility

Assignee

• Union Carbide Chemicals & Plastics Technology LLC · US

Inventors

• Ronald S. Eisinger · Charleston, US
• Fathi David Hussein · Cross Lanes, US
• David N. Jones · Mount Olive, US
• Ronald Irvin Raether · Cross Lanes, US
• David Merrill Rebhan · Charleston, US
• Joseph Patrick Welch · Flemington, US
• Gary Harry Williams · Flemington, US

Key dates

• Filing date: Jun 16, 1998
• Grant date: Apr 10, 2001
• Expiry date: Jun 16, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F6/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There is provided a post-reactor process for a polymer, especially an elastomeric polymer, prepared by a gas phase polymerization in the presence of an inert particulate material comprising: introducing the polymer containing inert particulate material into a polishing vessel in the presence of a fluidizing gas under polishing conditions.