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:
Nov. 27, 2012
Filed:
Nov. 04, 2008
Aspy K. Mehta, Humble, TX (US);
Manika Varma-nair, Warren, NJ (US);
Gabor Kiss, Hampton, NJ (US);
Robert P. Reynolds, Clinton, NJ (US);
John W. Chu, Neshanic Station, NJ (US);
Steven P. Rucker, Warren, NJ (US);
Aspy K. Mehta, Humble, TX (US);
Manika Varma-Nair, Warren, NJ (US);
Gabor Kiss, Hampton, NJ (US);
Robert P. Reynolds, Clinton, NJ (US);
John W. Chu, Neshanic Station, NJ (US);
Steven P. Rucker, Warren, NJ (US);
Exxonmobil Chemical Patents Inc., Houston, TX (US);
Abstract
This invention relates to processes for producing an isotactic propylene homopolymer having more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; a weight-averaged molecular weight of 35000 g/mol or more; a peak melting temperature of greater than 149° C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp−Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp−Tcp<(0.907×Tmp)−99.64), as measured in ° C. on the homopolymer having 0 wt % nucleating agent.