Hydrogenation of diene-based polymer latex in the presence of an in situ synthesized catalyst
US9822191B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jun 21, 2013 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Feb 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A technique of improving the hydrogenation reaction of diene-based polymers, present in aqueous suspension, by in-situ synthesizing the catalyst in the presence of a specific aliphatic alcohol is disclosed. The process allows the selective hydrogenation of the carbon-carbon double bonds in the diene-based polymers with a high degree of hydrogenation and short reactions times. The improved process eliminates the complicated catalyst synthesis operations so far necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.