Functionalized polymer

Patent metadata

Field	Value
Publication number	US-10017593-B2
Application number	US-201715420482-A
Country	US
Kind code	B2
Filing date	Jan 31, 2017
Priority date	Dec 31, 2011
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A method for providing a polymer having terminal functionality involves reacting a terminally active polymer with an α,β-ethylenically unsaturated compound that includes a group 2-13 element so as to provide a functionalized polymer. The resulting polymer exhibits enhanced interactivity with particulate fillers and can be used in the manufacture of vulcanizates.

First claim

That which is claimed is:

1. A terminally functionalized polymer provided by a process comprising reacting a terminally active polymer that comprises polyene mer with an α,β-ethylenically unsaturated compound having the general formula

where each R independently is a hydrogen atom or C 1 -C 10 alkyl group, M is a group 2-13 element, y and z are integers with the provisos that z is not zero and y+z is equal to a valence of M, and each X independently is R 1 , OR 1 , OC(O)R 1 , C(O)OR 1 or NR 1 2 in which each R 1 independently is a C 1 -C 30 alkyl group, thereby providing said terminal functionality to said polymer.

2. The polymer of claim 1 wherein said terminally active polymer comprises polydiene mer.

3. The polymer of claim 2 wherein said terminally active polymer is provided in the presence of a lanthanide-based catalyst.

4. The polymer of claim 1 wherein said terminally active polymer further comprises vinyl aromatic mer.

5. The polymer of claim 4 wherein said terminally active polymer is provided in the presence of an anionic initiator.

6. The polymer of claim 1 wherein z is 1 and wherein M is B and y is 2, M is Al and y is 2, or M is Zn and y is 1.

7. The polymer of claim 1 wherein said α,β-ethylenically unsaturated compound has the general formula

where R″ is a hydrogen atom or C 1 -C 3 alkyl group, M is a group 2-13 element, y and z are integers with the provisos that z is not zero and y+z is equal to a valence of M, and each X independently is R 1 , OC(O)R 1 , C(O)OR 1 or NR 1 2 in which each R 1 independently is a C 1 -C 30 alkyl group.

8. The polymer of claim 1 wherein said α,β-ethylenically unsaturated compound has the general formula

where R′ is a C 1 -C 10 alkyl group, M is a group 2-13 element, y and z are integers with the provisos that z is not zero and y+z is equal to a valence of M, and each X independently is R 1 , OR 1 , OC(O)R 1 , C(O)OR 1 or NR 1 2 in which each R 1 independently is a C 1 -C 30 alkyl group.

9. The polymer of claim 1 wherein said α,β-ethylenically unsaturated compound has the general formula

where each R′ independently is a C 1 -C 10 alkyl group, M is a group 2-13 element, y and z are integers with the provisos that z is not zero and y+z is equal to a valence of M, and each X independently is R 1 , OR 1 , OC(O)R 1 , C(O)OR 1 or NR 1 2 in which each R 1 independently is a C 1 -C 30 alkyl group.

10. The polymer of claim 7 wherein z is 1 and wherein M is B and y is 2, M is Al and y is 2, or M is Zn and y is 1.

Assignees

• Bridgestone Corp

Inventors

• Qin Zengquan
• Hogan Terrence E
• Uchiyama Toshihiro
• Abell Joshua P
• Luo Steven

Classifications

• C08L15/00 Primary

  Compositions of rubber derivatives (C08L11/00, C08L13/00 take precedence) · CPC title

• C08K3/36

  Silica · CPC title

• C08F212/08 Primary

  Styrene · CPC title

• C08L9/00

  Compositions of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title

• C08C19/44

  of polymers containing metal atoms exclusively at one or both ends of the skeleton · CPC title