Modified conjugated diene-based polymer and rubber composition including the same

A modified conjugated diene-based polymer, comprising:

• a derived unit from a modifier, wherein the modifier comprising three or more alkoxy groups bonded to silicon;
• a non-functional chain forming a silicon-carbon bond at one side of the derived unit from a modifier, wherein the non-functional chain comprising a repeating unit derived from a conjugated diene-based monomer;
• a functional chain forming a silicon-carbon bond at the other side of the derived unit from a modifier, wherein the functional chain comprising two or more derived units from an N-functional group-containing monomer;
• and
• wherein the non-functional chain further comprises a repeating unit derived from an aromatic vinyl-based monomer,
• wherein the modified conjugated diene-based polymer has a nitrogen (N) content, based on weight, of 150 ppm or more,
• wherein the N-functional group containing monomer is selected from:
• wherein, X is N or CH, R8a to R8c are each independently a hydrogen atom;
• an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms, a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 15 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• or a heterocyclic group of 3 to 20 carbon atoms, R8d is a single bond, a substituted with a substituent or unsubstituted alkylene group of 1 to 20 carbon 20 atoms;
• a substituted with a substituent or unsubstituted cycloalkylene group of 5 to 20 carbon atoms;
• or a substituted with a substituent or unsubstituted arylene group of 6 to 20 carbon atoms, wherein the substituent is an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 5 to 10 carbon atoms, or an aryl group of 6 to 20 carbon atoms, R8e is an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms;
• a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 20 carbon atoms;
• a cycloalkyl 10 group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group of 3 to 20 carbon atoms;
• or a functional group represented by Formula 1a, and O is an integer of 0 to 5, at least one R8e is a functional group represented by Formula 1a, and if o is 15 an integer of 2 to 5, multiple R8e groups may be the same or different, in Formula 1a, R8f is a single bond, a substituted with a substituent or unsubstituted alkylene group of 1 to 20 carbon atoms;
• a substituted with a substituent or unsubstituted cycloalkylene group of 5 to 20 carbon atoms;
• or a substituted with a substituent or unsubstituted arylene group of 6 to 20 carbon atoms, wherein the substituent is an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 5 to 10 carbon atoms, or an aryl group of 6 to 20 carbon atoms, and R8g and R8h are each independently an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms;
• a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group of 3 to 20 carbon atoms or a mono-substituted, di-substituted or trisubstituted alkylsilyl group with alkyl groups of 1 to 10 carbon atoms, or R8g and R8h are connected with each other to form a heterocyclic group of 2 to 10 carbon atoms together with N;
• in Formula 2, X1-X2 is CH2-CH2 or CH═CH, and X3-X4 is CH2-CH2, CH═N or N═N;
• in Formula 3, R11a and R11b are each independently an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms;
• a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 10 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group of 3 to 20 carbon atoms;
• or a functional group represented by Formula 3a below, R11c is an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms, a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group of 3 to 20 carbon atoms;
• or a functional group represented by Formula 3a and at least one of R11a, R11b and R11c is a functional group represented by Formula 3a below;
• in Formula 3a, R11d is a single bond, a substituted with a substituent or unsubstituted alkylene group of 1 to 20 carbon atoms;
• a substituted with a substituent or unsubstituted cycloalkylene group of 5 to 20 carbon atoms;
• or a substituted with a substituent or unsubstituted arylene group of 6 to 20 carbon atoms, wherein the substituent is an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of 5 to 10 carbon atoms, or an aryl group of 6 to 20 carbon atoms, and R11e and R11f are each independently an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon 15 atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms;
• a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group 20 of 3 to 20 carbon atoms;
• or a mono-substituted, disubstituted or tri-substituted alkylsilyl group with alkyl groups of 1 to 10 carbon atoms;
• in Formula 4, R12a is a single bond or a substituted with a substituent or unsubstituted alkylene group of 1 to 20 carbon atoms;
• a substituted with a substituent or unsubstituted cycloalkylene group of 5 to 20 carbon atoms;
• or a substituted with a substituent or unsubstituted arylene group of 6 to 20 carbon atoms, wherein the substituent is an alkyl group of 1 to 10 carbon atoms, a cycloalkyl group of to 10 carbon atoms, or an aryl group of 6 to 20 carbon atoms, and R12b and R12c are each independently an alkyl group of 1 to 20 carbon atoms;
• an alkenyl group of 2 to 20 carbon 15 atoms;
• an alkynyl group of 2 to 20 carbon atoms;
• a heteroalkyl group of 1 to 20 carbon atoms;
• a heteroalkenyl group of 2 to 20 carbon atoms;
• a heteroalkynyl group of 2 to 20 carbon atoms;
• a cycloalkyl group of 5 to 20 carbon atoms;
• an aryl group of 6 to 20 carbon atoms;
• a heterocyclic group of 3 to 20 carbon atoms;
• or a mono-substituted, disubstituted or tri-substituted alkylsilyl group with alkyl groups of 1 to 10 carbon atoms.