Robert E Hagerty

US Patent:

8129481, Mar 6, 2012

Filed:

Nov 22, 2011

Appl. No.:

13/302633

Inventors:

Robert O. Hagerty - Wyckoff NJ, US
Kevin B. Stavens - Seabrook TX, US
Randall B. Laird - Pasadena TX, US
Zerong Lin - Kingwood TX, US
Michael E. Muhle - Kingwood TX, US
Agapios K. Agapiou - Humble TX, US
David M. Glowczwski - Baytown TX, US
Fathi D. Hussein - Cross Lanes WV, US
Gary D. Mohr - Houston TX, US
Ted A. Powell - La Porte TX, US
Michael E. Sieloff - Houston TX, US
Edward F. Smith - Kingwood TX, US
Keith W. Trapp - Baton Rouge LA, US

Assignee:

Univation Technologies, LLC - Houston TX

International Classification:

C08F 2/00
C08F 4/06
C08F 210/00
B01J 8/18

US Classification:

526 62, 526 90, 526101, 526154, 526348, 422139

Abstract:

A method for treating at least one interior surface (for example, a bed wall) of a fluidized bed polymerization reactor system, including by applying a solution catalyst (preferably at least substantially uniformly and in liquid form) to each surface, and optionally (where a catalyst component of the solution catalyst comprises at least one chromium containing compound) oxidizing at least some of the applied chromium containing compound in a controlled manner.