Aliphatic polysulfones with improved mechanical integrity
US11001673B2 · kind B2 · utility
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Key dates
| Filing date | Jun 25, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jun 25, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/242
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polysulfone has sulfone units that are separated by alkylene units in a polymer chain or a copolymer chain where the alkylene units have at least four carbons between sulfone units. The alkylene units can include an ethenylene unit separated from the sulfone units by at least one methylene units. The polysulfones can be crosslinked for enhanced thermal stability. Membranes can be formed from the polysulfones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.