Albert M Mccullum

US Patent:

46409637, Feb 3, 1987

Filed:

Feb 15, 1985

Appl. No.:

6/702007

Inventors:

David R. Kreider - Wheaton IL
Albert McCullum - Friendswood TX
Philip M. Rose - Naperville IL
Chi-Hung Lin - Wheaton IL

Assignee:

Standard Oil Company (Indiana) - Chicago IL

International Classification:

C08F 234

US Classification:

526 67

Abstract:

In a process for quench-cooled, vapor-phase polymerization of olefin monomer comprising (a) contacting an olefin monomer, or mixture of olefin monomers, with a polymerization catalyst in the presence of hydrogen in a reactor vessel to form polymer product, and (b) removing, condensing and recycling off-gas from such reactor, an improvement comprises separating entrained polymerizing solid fines from said off-gas and recycling such solids directly to the reactor without substantial continued polymerization of such solids while in the presence of a substantially different concentration of hydrogen than in the reactor.

Address:

16635 Blackhawk Blvd, Friendswood, TX 77546

VIN:

4T1BK36B67U231884

Make:

TOYOTA

Model:

AVALON

Year:

2007