US 11,807,704 B2
Functionalized polymer, process for preparing and rubber compositions containing the functionalized polymer
Yuan-Yong Yan, Copley, OH (US); Zengquan Qin, Brentwood, TN (US); Koichi Saito, Chuo-ku (JP); and Rita E. Cook, Akron, OH (US)
Assigned to Bridgestone Corporation, Chuo-ku (JP)
Appl. No. 16/954,083
Filed by Bridgestone Corporation, Chuo-ku (JP)
PCT Filed Dec. 13, 2018, PCT No. PCT/US2018/065388
§ 371(c)(1), (2) Date Jun. 15, 2020,
PCT Pub. No. WO2019/118688, PCT Pub. Date Jun. 20, 2019.
Claims priority of provisional application 62/599,038, filed on Dec. 15, 2017.
Prior Publication US 2021/0171676 A1, Jun. 10, 2021
Int. Cl. C08F 36/06 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08K 5/20 (2006.01); C08K 5/3412 (2006.01); C08K 5/55 (2006.01); B60C 1/00 (2006.01)
CPC C08F 36/06 (2013.01) [C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08K 5/20 (2013.01); C08K 5/3412 (2013.01); C08K 5/55 (2013.01); B60C 1/0016 (2013.01); C08F 2810/40 (2013.01)] 20 Claims
 
1. A process for preparing a functionalized diene monomer-containing polymer comprising:
a. polymerizing at least one conjugated diene monomer and optionally at least one vinyl aromatic monomer to produce polymer chains with a living end;
b. reacting the living end polymer chains from (a) with a first functionalizing compound selected from:
i.

OG Complex Work Unit Chemistry
wherein n is an integer of 0 to 16, or
ii.

OG Complex Work Unit Chemistry
wherein R1 is selected from H and hydrocarbyl of C1-C20, and R2 is selected from H and hydrocarbyl of C1-C20,
thereby producing an intermediary product including polymer chains end functionalized with the first functionalizing compound;
c. coupling the intermediary product from (b) with a second functionalizing compound selected from

OG Complex Work Unit Chemistry
wherein B is boron, each R6 is independently selected from H and hydrocarbyl of C1-C20, and each X is a halogen,
thereby forming a final product including functionalized diene monomer-containing polymers having a trans-bond content of no more than 60% and functionalized with both a first functionalizing group resulting from the first functionalizing compound and a second functionalizing group resulting from the second functionalizing compound.