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:
Feb. 26, 2013
Filed:
Feb. 24, 2009
Kenneth Lewtas, Tervuren, BE;
Sudhin Datta, Houston, TX (US);
Charles Cozewith, Bellaire, TX (US);
Bruce A. Harrington, Houston, TX (US);
David J. Lohse, Bridgewater, NJ (US);
Olivier J. F. Georjon, Brussels, BE;
Anthony G. Karandinos, St. Stevens-Woluwe, BE;
Keith A. Nelson, Baton Rouge, LA (US);
Jean M. Tancrede, Baton Rouge, LA (US);
Kenneth Lewtas, Tervuren, BE;
Sudhin Datta, Houston, TX (US);
Charles Cozewith, Bellaire, TX (US);
Bruce A. Harrington, Houston, TX (US);
David J. Lohse, Bridgewater, NJ (US);
Olivier J. F. Georjon, Brussels, BE;
Anthony G. Karandinos, St. Stevens-Woluwe, BE;
Keith A. Nelson, Baton Rouge, LA (US);
Jean M. Tancrede, Baton Rouge, LA (US);
Exxonmobil Chemical Patents Inc., Houston, TX (US);
Abstract
An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one Cto Cα-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238 (B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRS) equal to and above 250 dg/min. at 230°C. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.