Process for preparing poly-piperazinamide anisotropic shaped articles
US4560522A · kind A · utility
1Cited by
5References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 30, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Jun 30, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for preparing poly-piperazinamide, anisotropic shaped articles comprising the preparation of the polymer solution in a polar organic solvent, the transformation of the solution into shaped bodies by spreading or spinning, the gelation of the shaped articles by phase inversion, and, optionally, the heat treatment of the gellified shaped articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.