Method for preparing nitrile-based rubber
US9932433B2 · kind B2 · utility
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1References
21Claims
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Key dates
| Filing date | Jun 5, 2015 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jun 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/09
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a method for preparing a nitrile-based rubber having an amount of ethylenically unsaturated nitrile of 34 wt % or less including preparing a polymer by performing a polymerization reaction by adding an ethylenically unsaturated nitrile-based monomer in two or more portions to a conjugated diene-based monomer, and coagulating the polymer by adding a sulfur-based coagulant to the polymer, and a nitrile-based rubber thus prepared having improved mechanical properties as well as excellent processability and low temperature characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.