Chlorinated copolymers and polymer products including chlorinated copolymer
US12319754B2 · kind B2 · utility
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21References
20Claims
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Assignee
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Key dates
| Filing date | Jan 12, 2024 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Jan 12, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/50
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to an energy efficient, fast and environmentally favourable process for the preparation of chlorinated butyl rubbers, that uses hypochloric acid (HOCl) and/or dichlorine monoxide (Cl2O) as halogenating agent. The chlorinated butyl rubbers prepared according to the aforementioned process exhibit an advantageous microstructure and a desirable content and ratio of chlorinated and non-chlorinated oligomers and are therefore also encompassed by the invention. The teachings herein also relate to chlorinated copolymers and polymer products that include a chlorinated copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.