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:
Feb. 22, 2005
Filed:
Jul. 25, 2003
Robert Norman Webb, Kingwood, TX (US);
Michael Francis Mcdonald, Kingwood, TX (US);
David Yen-lung Chung, Bellaire, TX (US);
Yuan-ju Chen, Houston, TX (US);
Richard Dwight Hembree, Zachary, LA (US);
John Patrick Soisson, Houston, TX (US);
Robert Norman Webb, Kingwood, TX (US);
Michael Francis McDonald, Kingwood, TX (US);
David Yen-Lung Chung, Bellaire, TX (US);
Yuan-Ju Chen, Houston, TX (US);
Richard Dwight Hembree, Zachary, LA (US);
John Patrick Soisson, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a Cor greater initiator having a tertiary halide.