Method for preparing a masterbatch of diene elastomer and silica
US9115258B2 · kind B2 · utility
17Cited by
3References
20Claims
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Key dates
| Filing date | Oct 10, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Oct 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10−7 and 1.875*10−5 mol/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.