Styron Europe Gmbh

Trinseo Europe Gmbh

Joachim Kiesekamp

Sven Thiele

Evemarie Hamann

Norbert Jantsch

Thomas Knispel

Daniel Heidenreich

Sven K H Thiele

Hagen Thomas Bartossek

The present invention relates to a modified elastomeric polymer obtained by reacting a living anionic elastomeric polymer and specific chain end modifying compound, wherein the living anionic elastomeric polymer comprises more than 70% and less than 99% by weight of butadiene units and more than 1% and less than 30% by weight of styrene units and has a vinyl bond content of from 2 to less than 10%, based on the polybutadiene fraction of the living anionic elastomeric polymer. The invention further relates to a method of preparing the modified elastomeric polymer and to an elastomeric polymer composition comprising the modified elastomeric polymer.

Low vinyl bond modified elastomeric copolymers

This disclosure generally relates to chain end modified elastomeric polymers and branched modified elastomeric polymers, their use in the preparation of elastomeric compositions, and articles prepared from chain end modified elastomeric polymers and branched modified elastomeric polymers. An elastomeric polymer composition is provided including the reaction product of at least a living anionic elastomeric polymer, a silane modifier compound, and a modifier compound.

Modified elastomeric polymers

The present invention relates to improved compositions of SSBR rubber. The improved compositions exhibit sufficient or improved balance of characteristics such as rolling resistance, HBU, abrasion, grip, and/or tear. The compositions may be made in an efficient, cost-effective manner.

Styrene butadiene rubber with novel styrene incorporation

A vulcanized elastomeric composition includes (i) a polymer reaction product of an anionic elastomeric polymer and a silane-sulfide modifier and (ii) a second elastomeric polymer different from the polymer reaction product such that the polymer reaction product comprises at least 30 weight percent of a total amount of the polymer reaction product and the second elastomeric polymer. Methods are described for making the polymer reaction product, their use in preparing vulcanized elastomeric compositions, and articles made from such compositions, including pneumatic tires, tire treads, belts, and the like.

Vulcanized elastomeric compositions

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&#x2014;R'&#x2014;S&#x2014;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&#x2032; 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 &#x3b4; at 60&#xb0; C. values, while maintaining good processing characteristics, and a good balance of physical properties, including: abrasion resistance, tensile strength, modulus and elongation at break.

Silane-sulfide chain end modified elastomeric polymers

A backbone modified polymer comprising the reaction product of an elastomeric polymer and a sulfide modifier represented by Formula 1: AS&#x2014;Y-Zm (Formula 1), and wherein Y is (C-C) aralkyl, (C-C) aryl, (C-C) alkyl, or (C-C) dialkylether (alkyl-O-alkyl), and wherein each may be optionally substituted with (C-Calkyl, (C-Calkoxy, (C-Caryl, (C-Caralkyl, nitrile, amine, NO, alkoxy, or thioalkyl; S is sulfur; A is hydrogen, &#x2014;(S)&#x2014;R1 or -MR2R3R4; Z is &#x2014;SH, &#x2014;S-MR5R6R7, &#x2014;S&#x2014;(S)&#x2014;R8, &#x2014;NR9R10, &#x2014;NR11COR12, &#x2014;O&#x2014;CO&#x2014;R13, &#x2014;NCO, or &#x2014;COOR14; M is silicon or tin; N is nitrogen; O is oxygen; m is the number one, two or three; p is the number one, two, three, four or five; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are the same or different, and are each, independently, selected from hydrogen (H), (C-C) alkyl, (C-C) aryl, (C-C) aralkyl or (C-C) tri(hydrocarbyl)silyl, and wherein the hydrocarbyl groups are each independently selected from (C-C) alkyl, (C-C) aryl, or (C-C) aralkyl. The invention also provides related compositions, methods and articles.

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Schkopau, Germany

Joachim Kiesekamp