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:
Jul. 10, 2012
Filed:
Aug. 04, 2011
Sven Thiele, Halle, DE;
Joachim Kiesekamp, Schkopau, DE;
Norbert Jantsch, Halle, DE;
Thomas Knispel, Halle, DE;
Sven Thiele, Halle, DE;
Joachim Kiesekamp, Schkopau, DE;
Norbert Jantsch, Halle, DE;
Thomas Knispel, Halle, DE;
Styron Europe GmbH, Horgen, CH;
Abstract
A chain end modified polymer comprising the reaction product of a living anionic elastomeric polymer and a silane-sulfide modifier A preferred class of modifiers includes compounds represented by the formula: (RO)x(R)Si—R'—S—SiR, wherein Si is silicon; S is sulfur; O is oxygen; x is an integer selected from 1, 2 and 3; y is an integer selected from 0, 1, and 2; x+y=3; R is the same or different and is: (C-C) alkyl; and R′ is aryl, alkylaryl, or (C-C) alkyl. The invention further includes methods for making such chain end modified polymers, their use in preparing vulcanized elastomeric polymer compositions, and articles made from such compositions, including pneumatic tires, tire treads, belts, and the like. The subject compositions exhibit lower Tan δ at 60° C. values, while maintaining good processing characteristics, and a good balance of physical properties, including: abrasion resistance, tensile strength, modulus and elongation at break.