Method for producing rubber compositions with disaggregated carbon nanotubes
US11814523B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jan 14, 2019 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Oct 24, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for producing a cross-linkable rubber composition that comprises a masterbatch are disclosed. The masterbatch comprising a base masterbatch and the method includes forming the base masterbatch by adding a diene rubber to an internal mixer; adding a total quantity of a solid agglomerated material that includes carbon nanotubes into the mixing chamber; and mixing the diene elastomer and the solid agglomerated material. To ensure adequate distribution and dispersion of the material, the base masterbatch has a minimum Mooney viscosity ML(1+4)100 of at least 85 MU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.