Solvent system for polyacrylonitrile and other polymers and use of same for casting film, for spinning fibers and for coating
US4172065A · kind A · utility
3Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1978 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | Apr 11, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Solvent system for polyacrylonitrile polymers comprising nitromethane, water and fluoro alkanol. The solvent enables a high concentration of polymer to be dissolved without the solution being too viscous to cast as a film or to spin as a fiber. The solvent is sufficiently soluble that it can be removed substantially completely from the resulting film or fiber with consequent advantages of leaving no toxic residue and of not discoloring the end product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.