Polyamide-imide based filaments, and a process for obtaining them
US5159052A · kind A · utility
4Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/78
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to heat-resistant threads, filaments and fibres based on polyamide-imide. They have a polydispersion index I.ltoreq.2.2, a breaking tenacity.gtoreq.45 cN/tex, a Young's modulus.gtoreq.3.8 GPa, an elongation.ltoreq.25% and a color defined by the luminance Y>25%, the degree of whiteness DW<30 and the yellow index YI>170. In addition they have a very good stability to light, quantified by the retention of the mechanical characteristics. They have wide application in working and protective garments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.