Method for preparing a masterbatch of diene elastomer and silica
US9290626B2 · kind B2 · utility
12Cited by
2References
18Claims
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Key dates
| Filing date | Oct 10, 2012 |
| Grant date | Mar 22, 2016 |
| 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 calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10−6 and 2.81*10−6 mol/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.