Modified polymethylhydrosiloxane, modified high-cis conjugated diene polymer, and manufacturing method for the same, and rubber composition and tire using the same

A manufacturing method for a modified high-cis conjugated diene polymer, comprising:

• performing a polymerization reaction to form a high-cis conjugated diene polymer;
• and
• making the high-cis conjugated diene polymer react with a first modifier, and then react with a second modifier in the presence of a condensation accelerator to generate a modified high-cis conjugated diene polymer;
• wherein the modified high-cis conjugated diene polymer has over 97% of cis-1,4 structure;
• the second modifier comprises a compound represented by the following formula (1):
• wherein
• R3 comprise a substituted or un-substituted C6-C16 hydrocarbon group containing an aryl group, or a substituted or un-substituted C2-C16 hydrocarbon group containing an amino group,
• R4 comprise a substituted or un-substituted C2-C4 alkylene group, a group of —(O—C2H4)—, and a group of —OR5,
• R5 are a hydrogen atom or a substituted or un-substituted C1-C3 alkyl group,
• R6 are substituted or un-substituted C2-C4 alkylene groups,
• R7 are substituted or un-substituted C2-C4 alkylene groups,
• R8 are C1-C3 alkoxy groups,
• v is 170-400,
• w is 0-45,
• x is 15-59,
• y is 0-43,
• z is 5-34,
• and a total of w, x and y is bigger than 0,
• R3 are identical or different,
• R4 are identical or different,
• R5 are identical or different,
• R6 are identical or different,
• R7 are identical or different, and
• R8 are identical or different;
• the first modifier comprises a compound represented by the following formula (2):
• (R1)a—Si—(OR2)4-a FORMULA (2)
• wherein R1 is a functional group comprising a glycidoxy group, 2-(3,4-epoxycyclohexyl) group or an isocyanate group, R2 are substituted or un-substituted C1-C3 alkyl groups, a is 0 or 1, R2 are identical or different.