Poly-para-phenyleneterephthalamide compositions, their preparation and a process for the production of fibres from these compounds
US4579895A · kind A · utility
7Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1985 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | May 24, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a homogeneous fluid composition which can be shaped, consisting of N-methylpyrrolidone-2, poly-para-phenyleneterephthalamide in an amount of 5 to 7% by weight, relative to the weight of the composition, calcium chloride or lithium chloride, and a tertiary amine with a pK H.sub.2 O equal to at most 6.60, and also to the process for its production. The composition can be shaped directly to form filaments, fibres, films or fibrids which can be used, for example, in the textile industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.