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AssigneeDow Global Technologies LLC
InventorsSven Thiele, Joachim Kiesekamp, Norbert Jantsch, Thomas Knispel
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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)ySi—R′—S—SiR3, 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: (C1-C16) alkyl; and R′ is aryl, alkylaryl, or (C1-C16) 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.
A chain end modified elastomeric polymer, comprising the reaction product of:
A vulcanized elastomeric polymer composition comprising the reaction product of the following:
A method for making a vulcanized elastomeric polymer composition, said method comprising combining at least the following constituents:
Dependencies are inferred from the claim text.