Treatment of epoxidized unsaturated isoolefin copolymers
US11421052B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Oct 22, 2020 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.