Diluent for the production of butyl rubber
US10556977B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Apr 30, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods are provided to efficiently produce butyl rubber via a slurry polymerization process. The process comprises providing at least two monomers, wherein at least one monomer is an isoolefin and at least one monomer is a multiolefin. The monomers are combined with an initiator and an organic diluent comprising 40-60 volume % of methyl chloride and 40-60 volume % of 1,1,1, 2-tetrafluoroethane and polymerized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.