Polymer composition and tire
US11155706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2019 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Jan 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer composition including: a filler (A); a polymer (B) having a repeating unit derived from a conjugated diene compound, having a peak temperature of a tan δ temperature dispersion curve of −110° C. or more and less than −30° C., and having a functional group capable of interacting with the filler (A); and a polymer (C) having a repeating unit derived from a conjugated diene compound and a repeating unit derived from an aromatic vinyl compound, having a peak temperature of a tan δ temperature dispersion curve of −30° C. or more and 10° C. or less, and having a functional group capable of interacting with the filler (A), wherein the polymer (B) and the polymer (C) are incompatible with each other, and a concentration of functional groups per unit mass of the polymer (B) is higher than a concentration of functional groups per unit mass of the polymer (C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.