Carbonaceous adsorbents from pyrolyzed polysulfonated polymers
US4839331A · kind A · utility
49Cited by
2References
24Claims
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Key dates
| Filing date | Jan 29, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Jan 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/918
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carbonaceous adsorbent particles having multimodal pore size, including micropores and macropores, with improved adsorptive and separative properties, are prepared by partial pyrolysis of polysulfonated macroporous precursor resins, said resins being in turn derived from macroporous poly(vinylaromatic) resins. The particles may be further treated by activating with reactive gases or by functionalization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.