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:
Dec. 13, 2011
Filed:
Nov. 10, 2010
Prasadarao Meka, Seabrook, TX (US);
Kevin Wayne Lawson, Houston, TX (US);
Prasadarao Meka, Seabrook, TX (US);
Kevin Wayne Lawson, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Disclosed is a propylene impact copolymer comprising a first polypropylene having an MFRwithin the range from 15 to 40 dg/min; a second polypropylene having an MFRwithin the range from 50 to 190 dg/min; an elastomeric polymer; and wherein the propylene impact copolymer has an MFRwithin the range from 6 to 18 dg/min; a 1% Secant Flexural Modulus of greater than 150 kpsi (1030 MPa); and an Izod Impact at 25° C. of greater than 10 ft-lbs/in (530 J/m). The impact copolymer may be produced in a two or three tandem-reactor system wherein the catalyst composition used in the second reactor to produce the second polypropylene is different from the catalyst composition used in the first reactor to produce the first polypropylene.