A functionalized elastomer is disclosed comprising the reaction product of a living anionic elastomeric polymer and a polymerization terminator of formula Iwhere X is CI, Br, or I; m is an integer from 0 to 2, n is an integer from 1 to 3, with the proviso that n + m = 3; R1, R2are independently C1 to C18 alkyl, aryl, or a combination thereof, or R1, R2are independently -SiR3where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R1and R2taken together with their common nitrogen atom and optionally a sulfur or oxygen heteroatom to form a five to eight membered ring; R3is hydrogen, or C1 to C18 alkyl, aryl, or a combination thereof, or R3is -SiR3where R is independently alkyl, aryl, alkoxy, or disubstituted amino, or R3is -R6-R7, where R6is C1 to C3 alkanediyl and R7is selected from the following structures: -S-Z, -N(R8)(R9), -O(Y), or Si(OR10)3, where R8and R9are independently C1 to C18 alkyl, aryl, or a combination thereof, Y and Z are independently selected from the group consisting of methoxymethyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydrofuranyl, tert-butyl, allyl, 1-ethoxyethyl, benzyl, triphenylmethyl, triethylsilyl, triisopropylsilyl, trimethylsilyl, tert-butyl dimethyl silyl, tert-butyl diphenyl silyl, and isopropyldimethylsilyl, and R10are independently C1 to C4 alkyl; or when m = 1, the polymerization terminator may have the formula IIwhere R4, R5are independently C1 to C18 alkyl, aryl, or a combination thereof, or R4, R5are independently -SiR3where R is independently alkyl, aryl, alkoxy, or disubstituted amino, X and R3are as defined above, and k is an integer from 0 to 10.
FUNCTIONALIZED POLYMER, RUBBER COMPOSITION AND PNEUMATIC TIRE
FUNKTIONALISIERTES POLYMER, KAUTSCHUKZUSAMMENSETZUNG UND LUFTREIFEN
POLYMÈRE FONCTIONNALISÉ, COMPOSITION DE CAOUTCHOUC ET PNEU
2021-11-10
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind |
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