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:
Sep. 03, 2019
Filed:
Jun. 05, 2013
Firestone Polymers, Llc, Akron, OH (US);
Mark N. DeDecker, North Canton, OH (US);
Joseph P. Padolewski, Copley, OH (US);
James H. Pawlow, Schwenksville, PA (US);
Firestone Polymers, LLC, Akron, OH (US);
Abstract
A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A stabilizing agent having the formula (R)Si(OH)n wherein R is a Cto Calkyl, Cto Calkyl group containing a heteroatom such as nitrogen or oxygen, Cto Ccycloalkyl, or Cto Caromatic group is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.