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. 15, 2018
Filed:
Jan. 20, 2017
California Institute of Technology, Pasadena, CA (US);
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Dinesh C. Aluthge, Pasadena, CA (US);
Aaron Sattler, Hoboken, NJ (US);
Mamdouh Al-Harthi, Dhahran, SA;
Jay A. Labinger, Claremont, CA (US);
John E. Bercaw, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
Linear low density polyethylene (LLDPE) is produced from an ethylene-only feed over a tandem catalyst system consisting of a phenoxy-imine titanium trimerization catalyst and a silylene-linked cyclopentadienyl/amido titanium polymerization catalyst co-supported on the same methylaluminoxane/silica particles. The level of 1-hexene incorporation in the LLDPE can be controlled by varying the ethylene pressure. Tandem, co-silica-supported ethylene trimerization and ethylene/1-hexene copolymerization catalysts produce linear low density polyethylene (LLDPE) from an ethylene-only feedstock. The percentage 1-hexene incorporation in the LLDPE may be varied by adjusting the amounts of the two catalysts on the silica support.