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:
Sep. 09, 2014
Filed:
Aug. 07, 2012
Narayanaswami Raja Dharmarajan, Houston, TX (US);
Rui Zhao, Houston, TX (US);
Bruce Allan Harrington, Houston, TX (US);
George James Pehlert, Houston, TX (US);
Periagaram S. Ravishankar, Kingwood, TX (US);
Kent L. Chasey, Houston, TX (US);
Narayanaswami Raja Dharmarajan, Houston, TX (US);
Rui Zhao, Houston, TX (US);
Bruce Allan Harrington, Houston, TX (US);
George James Pehlert, Houston, TX (US);
Periagaram S. Ravishankar, Kingwood, TX (US);
Kent L. Chasey, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention relates to a continuous polymerization process for preparing a random ethylene interpolymer which comprises: (A) polymerizing ethylene, and an α-olefin comonomer selected from propylene and/or 1-butene, and mixtures thereof, under continuous random polymerization conditions in the presence of single site catalyst system employing an ionic activator having cyclic ligands shielding a central charge bearing atom, at a temperature of 140° C. to 250° C. at a conversion of ethylene of 80 to 99% and a comonomer conversion of from at least 20%; and (B) devolatilizing the polymer to provide an ethylene copolymer having a density of from 0.85 to 0.92 g/cm, an MI of from 0.01 to 100 g/10 min and an I/Iof from 30 to 400.