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. 04, 2007
Filed:
Jul. 09, 2004
Applicants:
Henk Van DE Weg, Amsterdam, NL;
Mark Hageman, Amsterdam, NL;
Inventors:
Henk van de Weg, Amsterdam, NL;
Mark Hageman, Amsterdam, NL;
Assignee:
Kraton Polymers U.S. LLC, Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C08C 19/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for partially and selectively hydrogenating a polymer made of at least a conjugated diene monomer having a vinyl content of from 20 to 65%, comprising a hydrogenation step on a solution of the polymer, characterized in that the hydrogenation step is performed in the presence of an iron-containing catalyst whereby a hydrogenated polymer is obtained wherein the vinyl content is reduced to 5% or less, whereas the content of 1,4-double bonds is maintained at a level of at least 30%.