Conjugated diene polymer and method of production of conjugated diene polymer

Patent metadata

Field	Value
Publication number	US-2016326274-A1
Application number	US-201415108152-A
Country	US
Kind code	A1
Filing date	Oct 24, 2014
Priority date	Dec 27, 2013
Publication date	Nov 10, 2016
Grant date	—

Abstract

A conjugated diene polymer represented by the following formula (1) or the following formula (2):

(wherein, in the formula (1) and in the formula (2), the “polymer” represents a polymer chain containing conjugated diene monomer units, X 1 and X 2 represent a functional group selected from a hydrocarbyloxy group, halogen group, and hydroxyl group, R 1 and R 4 represent a substituted or unsubstituted hydrocarbon group, R 2 and R 3 and R 5 and R 6 respectively represent a substituted or unsubstituted hydrocarbon group, R 2 and R 3 or R 5 and R 6 may bond with each other to form a ring structure. In the formula (1), “n” is an integer of 1 to 3, “m” is an integer of 0 to 2, “p” is an integer of 0 to 2, and n+m+p=3. Further, in the formula (2), “s” is 1 or 2, “t” is 0 or 1, “u” is 0 or 1, and s+t+u=2.)

First claim

1 - 8 . (canceled)

9 . A conjugated diene polymer represented by the following formula (1) or the following formula (2):

wherein, in the formula (1), the “polymer” represents a polymer chain containing conjugated diene monomer units, X 1 represents a functional group selected from a hydrocarbyloxy group, halogen group, and hydroxyl group, R 1 represents a substituted or unsubstituted hydrocarbon group, R 2 and R 3 respectively represent a substituted or unsubstituted hydrocarbon group, R 2 and R 3 may bond with each other to form a ring structure, “n” is an integer of 1 to 3, “m” is an integer of 0 to 2, “p” is an integer of 0 to 2, and n+m+p=3,

wherein, in the formula (2), the “polymer” represents a polymer chain containing conjugated diene monomer units, X 2 represents a functional group selected from a hydrocarbyloxy group, halogen group, and hydroxyl group, R 4 represents a substituted or unsubstituted hydrocarbon group, R 5 and R 6 respectively represent a substituted or unsubstituted hydrocarbon group, R 5 and R 6 may bond with each other to form a ring structure, “s” is 1 or 2, “t” is 0 or 1, “u” is 0 or 1, and s+t+u=2.

10 . A conjugated diene polymer further comprising, in addition to the conjugated diene polymer according to claim 9 , a conjugated diene polymer represented by the formula (3) and/or a conjugated diene polymer represented by the formula (4):

wherein, in the formula (3), “polymer” represents a polymer chain containing conjugated diene monomer units, X 3 represents a halogen group or hydroxyl group, M represents a silicon atom or tin atom, “a” is an integer of 1 to 4, “b” is an integer of 0 to 3, and a+b=4,

wherein, in the formula (4), “polymer” represents a polymer chanin containing conjugated diene monomer units, X 3 represents a halogen group or hydroxyl group, R 7 represents a substituted or unsubstituted hydrocarbon group, M represents a silicon atom or tin atom, “c” is an integer of 0 to 3, “d” is an integer of 0 to 3, “e” is an integer of 0 to 3, “f” is an integer of 0 to 3, c+d=3, e+f=3, and d+f is an integer of 1 to 6.

11 . A rubber composition comprising 100 parts by weight of a rubber ingredient containing the conjugated diene polymer according to claims 9 , and 10 to 200 parts by weight of silica.

12 . A rubber composition comprising 100 parts by weight of a rubber ingredient containing the conjugated diene polymer according to claims 10 , and 10 to 200 parts by weight of silica.

13 . The rubber composition according to claim 11 further comprising a cross-linking agent.

14 . The rubber composition according to claim 12 further comprising a cross-linking agent.

15 . A cross-linked rubber obtained by cross-linking the rubber composition according to claim 13 .

16 . A cross-linked rubber obtained by cross-linking the rubber composition according to claim 14 .

17 . A tire comprising the cross-linked rubber according to claim 15 .

18 . A tire comprising the cross-linked rubber according to claim 16 .

19 . A method of production of a conjugated diene polymer comprising
a step of polymerizing a monomer containing a conjugated diene compound in an inert solvent using a polymerization initiator so as to obtain a conjugated diene polymer chain having an active end and a step of reacting a compound represented by the following formula (5) with the active end of the conjugated diene polymer chain having an active end:

wherein, in the formula (5), X 4 represents a functional group selected from a hydrocarbyloxy group, halogen group, and hydroxyl group, R 8 represents a substituted or unsubstituted hydrocarbon group, R 9 and R 10 respectively represent a substituted or unsubstituted hydrocarbon group, R 9 and R 1 ° may bond with each other to form a ring structure, and “r” is an integer of 0 to 2.

20 . The method of production of a conjugated diene polymer according to claim 19 further comprising, after obtaining the conjugated diene polymer chain having an active end, a step of reacting part of the active ends of the conjugated diene polymer chains with a tin halide, silicon halide, or compound represented by the following formula (6):

wherein, in the formula (6), R 11 represents a substituted or unsubstituted alkyl chain, X 5 expresses a halogen group, and M expresses a silicon atom or tin atom.

Assignees

• Zeon Corp

Inventors

• Sakurai Takuro
• Iizuka Takashi
• Yamagishi Hidenori

Classifications

• C08F2810/20

  leading to a crosslinking, either explicitly or inherently · CPC title

• C08C19/25 Primary

  Incorporating silicon atoms into the molecule · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08L9/06

  Copolymers with styrene · CPC title

• C08F236/14

  containing elements other than carbon and hydrogen · CPC title