Modified conjugated diene-based polymer and rubber composition including the same
US12269937B2 · kind B2 · utility
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Key dates
| Filing date | Sep 2, 2020 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Sep 9, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer satisfying the conditions of i) a mooney viscosity from 75 to less than 100, measured in accordance with ASTM D1646 at 110° C., ii) a mooney stress relaxation ratio 0.4 or less, measured at 110° C., iii) a weight average molecular weight (Mw) of 750,000 g/mol or more, and iv) a molecular weight distribution from 1.0 to 2.0, wherein the molecular weight distribution is a ratio of Mw to the number average molecular weight (Mn).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.