Rubber with backbone and end-group functionalization

An end-group functionalized rubber which is the reaction product of (1) a living rubbery polymer;

• and (2) a polymerization terminator, wherein the polymerization terminator may be of formula I:
• wherein X is selected from the group consisting of chlorine atoms, bromine atoms, and iodine atoms;
• wherein m is an integer from 0 to 2, and n is an integer from 1 to 3, with the proviso that n+m=3;
• wherein R1 and R2 are independently alkyl groups or aryl groups containing from 1 to 18 carbon atoms, or
• wherein R1, R2 are independently —SiR3 groups, wherein R3 is independently selected from alkyl groups, aryl groups, alkoxy groups, or disubstituted amino groups, or
• wherein R1 and R2 taken together with a common nitrogen atom and optionally a sulfur or oxygen heteroatom form a five to eight membered ring;
• wherein R3 is hydrogen or an alkyl group, an aryl group, or R3 is —SiR4 group wherein R4 is independently selected from alkyl groups, aryl groups, alkoxy groups, or disubstituted amino groups containing from 1 to 18 carbon atoms, or R3 is selected from —R6 and —R7, where R6 is alkanediyl containing from 1 to 3 carbon atoms, and R7 is selected from the following structures —S—Z, —N(R8)(R9), —O(Y), and Si(OR10)3, wherein R8 and R are independently selected from alkyl groups and aryl groups containing from 1 to 18 carbon atoms, Y and Z are independently selected from the group consisting of methoxymethyl groups, tetrahydropyranyl groups, tetrahydrothiopyranyl groups, tetrahydrofuranyl groups, tert-butyl groups, allyl groups, 1-ethoxyethyl groups, benzyl groups, triphenylmethyl groups, triethylsilyl groups, triisopropylsilyl groups, trimethylsilyl groups, tert-butyl dimethyl silyl groups, tert-butyl diphenyl silyl groups, and isopropyldimethylsilyl groups, and wherein R10 is represents an alkyl group containing from 1 to 4 carbon atoms;
• or the polymerization terminator may of formula II:
• where R4, R5 are independently selected from alkyl groups or aryl groups containing from 1 to 18 carbon atoms, or R4, R5 are independently —SiR3 groups, wherein R3 is independently selected from alkyl groups, aryl groups, alkoxy groups, or disubstituted amino groups;
• wherein X is selected from the group consisting of chlorine atoms, bromine atoms, and iodine atoms;
• wherein R3 is hydrogen or an alkyl group, an aryl group, or R3 is —SiR4 group wherein R4 is independently selected from alkyl groups, aryl groups, alkoxy groups, or disubstituted amino groups containing from 1 to 18 carbon atoms, or R3 is selected from —R6 and —R7, where R6 is alkanediyl containing from 1 to 3 carbon atoms, and R7 is selected from the following structures —S—Z, —N(R8)(R9), —O(Y), and Si(OR10)3, wherein R8 and R9 are independently selected from alkyl groups and aryl groups containing from 1 to 18 carbon atoms, Y and Z are independently selected from the group consisting of methoxymethyl groups, tetrahydropyranyl groups, tetrahydrothiopyranyl groups, tetrahydrofuranyl groups, tert-butyl groups, allyl groups, 1-ethoxyethyl groups, benzyl groups, triphenylmethyl groups, triethylsilyl groups, triisopropylsilyl groups, trimethylsilyl groups, tert-butyl dimethyl silyl groups, tert-butyl diphenyl silyl groups, and isopropyldimethylsilyl groups, and wherein R10 is represents an alkyl group containing from 1 to 4 carbon atoms;
• wherein k is an integer from 0 to 10;
• and
• wherein the living rubbery polymer is comprised of polymer chains having functional groups of the structure:
• in the backbone thereof, and wherein R11 and R12 can be the same or different and represent alkyl groups containing form 1 to 8 carbon atoms.