Amino ketone cross-linked polyphenylene oxide
US4468503A · kind A · utility
11Cited by
14References
6Claims
0Family size
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Key dates
| Filing date | Jun 30, 1983 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Jun 30, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/5223
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cross-linked polyphenylene oxide compositions comprise the reaction product of haloacylated polyphenylene oxide and ammonia. The polyphenylene oxide chains are cross-linked by amino ketone bonding. Such cross-linked polymers are useful as membranes, for instance gas separation membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.