Functionalized polymer, rubber composition and pneumatic tire
US11492426B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2020 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Apr 15, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A functionalized elastomer comprising the reaction product of a living elastomeric polymer and a polymerization terminator of formula I [R1]n—B—[X—R2]m I where B is boron; X is oxygen or nitrogen; R1 is independently vinyl, oxiranyl, phenyl, 1-alkenyl of 2 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms including at least one halogen atom, 1-alkenyl of 2 to 8 carbon atoms including at least one halogen or one hydrogen; R2 is independently C1 to C8 alkyl, C8 to C14 aryl; or when m>1 R2 may be taken together to form a substituted or unsubstituted cyclic structure comprising 2 to 16 carbon atoms where the cyclic structure may be heterocyclic or non-heterocyclic; n is 1 or 2, m is 1 or 2, and n+m=3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.