Copolymers, their preparation and use
US12297326B2 · kind B2 · utility
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19Claims
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Assignee
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Key dates
| Filing date | Jun 22, 2021 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Dec 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/40
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to copolymers which consist essentially of [-ether-phenyl-ether-phenyl-carbonyl-phenyl-]and [ether-phenyl-phenyl-ether-phenyl-carbonyl-phenyl-] repeat units, as well as end units, which have reduced melting temperature (Tm) compared to prior art copolymers including such repeat units. The copolymers of the invention exhibit crystallinity and have similar glass transition temperatures to the prior art polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.