Process for forming branched nitropolyphenylene
US4059719A · kind A · utility
2Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1976 |
| Grant date | Nov 22, 1977 |
| Priority date | — |
| Expiry date | Apr 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/312
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Solid aromatic polymers, such as branched polyphenylenes, are reacted with a reactive gas such as a NO.sub.2 -N.sub.2 O.sub.4 mixture, chlorine and sulfur trioxide without solvent or catalyst. The extent of reaction depends on reaction time and temperature and on the concentration of the reactive gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.