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:
Apr. 14, 2009
Filed:
Apr. 05, 2006
Applicants:
Geert E. A. Vermunicht, Ottignies Louvain-La-Neuve, BE;
Birgitte M. L. Van DE Vliet, Ottignies Louvain-La-Neuve, BE;
Jeffrey G. Southwick, Houston, TX (US);
Inventors:
Geert E. A. Vermunicht, Ottignies Louvain-La-Neuve, BE;
Birgitte M. L. Van de Vliet, Ottignies Louvain-La-Neuve, BE;
Jeffrey G. Southwick, Houston, TX (US);
Assignee:
Kraton Polymers U.S. LLC, Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 297/04 (2006.01); C08F 9/06 (2006.01); C08L 25/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a poly(styrene-butadiene-styrene) polymer having a high vinyl content in the butadiene block. The polymer also has a polystyrene content from 15% to 20% by weight; a coupling efficiency from 50 to 80%; a styrene block molecular weight from 9,000 to 10,000 g/mol; a vinyl content from 20 to 45%; and a melt flow rate of equal to or greater than 10.