Ring-opened copolymer
US11981773B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Apr 11, 2019 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jun 2, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/76
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A ring-opened copolymer including structural units derived from a norbornene compound having a specific structure and structural units derived from a monocyclic olefin, wherein the proportion of the structural units derived from a norbornene compound is 25 to 90 wt % and the proportion of the structural units derived from a monocyclic olefin is 10 to 75 wt % relative to the total repeating structural units in the ring-opened copolymer, the weight average molecular weight of the ring-opened copolymer is 100,000 to 1,000,000, and the cis/trans ratio of the ring-opened copolymer is 0/100 to 50/50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.