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:
May. 29, 2007
Filed:
Apr. 15, 2004
Ramin Abhari, Bixby, OK (US);
Charles Lewis Sims, Houston, TX (US);
Peijun Jiang, League City, TX (US);
David Raymond Johnsrud, Humble, TX (US);
JO Ann Marie Canich, Houston, TX (US);
Ramin Abhari, Bixby, OK (US);
Charles Lewis Sims, Houston, TX (US);
Peijun Jiang, League City, TX (US);
David Raymond Johnsrud, Humble, TX (US);
Jo Ann Marie Canich, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Disclosed is a process for producing branched polymers including at least 50 mol % C–Colefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C–Colefins into a first reaction zone at a temperature of greater than 70° C. and a residence time of 120 minutes or less to produce a product; (2) feeding the product a second catalyst, and an activator into a second reaction zone at a temperature of greater than 70° C., and a residence time of 120 minutes or less. One of the catalysts should be chosen to produce a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or less. The other catalyst should be chosen to producing a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or more.