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. 01, 2009
Filed:
Jun. 04, 2003
Harvey E. Atwood, Kingwood, TX (US);
Robert C. Bening, Katy, TX (US);
Mark Hageman, Amsterdam, NL;
Dale L. Handlin, Jr., Houston, TX (US);
Adrie a Van Der Huizen, Amsterdam, NL;
Kimberly A. Johnson, Richmond, TX (US);
Carl L. Willis, Houston, TX (US);
Harvey E. Atwood, Kingwood, TX (US);
Robert C. Bening, Katy, TX (US);
Mark Hageman, Amsterdam, NL;
Dale L. Handlin, Jr., Houston, TX (US);
Adrie A van der Huizen, Amsterdam, NL;
Kimberly A. Johnson, Richmond, TX (US);
Carl L. Willis, Houston, TX (US);
Kraton Polymers U.S. LLC, Houston, TX (US);
Abstract
Lithium-terminated polymers of one or more conjugated dienes and of one or more mono alkenyl arenes are coupled by reaction with an alkoxy silane coupling agent having the formula R—Si—(OR'), where x is 0 or 1, x+y=4, R and R′ are the same or different, R is selected from aryl hydrocarbon radicals, linear alkyl hydrocarbon radicals and branched alkyl hydrocarbon radicals, and R′ is selected from linear and branched alkyl hydrocarbon radicals, such that the resulting polymer composition contains less than about ten weight percent of uncoupled polymer diblock. The polymer compositions are subsequently selectively hydrogenated, and are useful in a variety of compounds and end use applications.