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:
Jul. 05, 2016
Filed:
Mar. 06, 2015
Daniel Bilbao, Houston, TX (US);
Jeffrey L. Brinen, League City, TX (US);
Carlos U. DE Gracia, La Porte, TX (US);
Henry Dong, Stafford, TX (US);
Daniel Bilbao, Houston, TX (US);
Jeffrey L. Brinen, League City, TX (US);
Carlos U. De Gracia, La Porte, TX (US);
Henry Dong, Stafford, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
This invention relates to a copolymer prepared using two or more non-coordinating anion activators comprising a first C2 to C12 alpha olefin (such as ethylene), a second C3 to C12 alpha olefin (such as propylene) different from the first alpha olefin, and diene (such as ethylidene norbornene and/or vinyl norbornene), where the polymer has: a) first alpha olefin (ethylene) content of 35 to 90 mol %; b) second alpha olefin (propylene) content of 9.8 to 64.8 mol %; c) diene content of 0.2 to 5 mol %; d) a branching index g'ave of 0.95 or more; e) a complex viscosity ratio (eta*(0.01 rad/s)/eta*(100 rad/s), at 125° C.) greater than 1.1*Y, where Y=Y+{[(Y−Y)/(X−X)](X−X)}, where Xis the wt % of a first non-coordinating anion activator, NCA, used to prepare the copolymer (based upon weight of NCAand a second non-coordinating anion activator, NCA, used to prepare the copolymer), X=0, X=100, Y=complex viscosity ratio of polymer made with 100% NCAand 0% NCA, Yis complex viscosity ratio of polymer made with 100% NCAand 0% NCA, where NCAhas an Mw lower than the Mw of NCA; f) an Mw/Mn of 4.0 or less; g) a melting point of 30° C. or less; and h) a Composition Distribution Breadth Index of 50% or more.