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:
Apr. 22, 2014
Filed:
Apr. 06, 2010
Wei Xu, Riyadh, SA;
Ali Saad Headan, Riyadh, SA;
Sirajudeen Mohamed, Riyadh, SA;
Atieh Aburaqabah, Riyadh, SA;
Wei Xu, Riyadh, SA;
Ali Saad Headan, Riyadh, SA;
Sirajudeen Mohamed, Riyadh, SA;
Atieh Aburaqabah, Riyadh, SA;
Saudi Basic Industries Corporation, Riyadh, SA;
Abstract
The invention is directed to a process for the production of high density polyethylene by polymerization of ethylene in the presence of a supported chromium oxide based catalyst and an activator characterized in that the activator comprises the reaction mixture of a boron compound and/or an alkyl aluminum compound and a nitrogen containing compound wherein the boron compound is a (C-C) alkyl boron compound or a (C-C) aromatic boron compound, wherein the alkyl aluminum compound is an organo aluminum compound having the formula AIRin which R is a hydrocarbon radical containing 1-10 carbon atom and wherein the nitrogen containing compound comprises —NH, —NHR, —NR, wherein R may be an alkyl or a substituted alkyl having from 1 to 40 carbon atoms.