Sulphurous p-aramid yarn
US6042941A · kind A · utility
1Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber of a para-aromatic polyamide polymer having a surprisingly higher modulus. This fiber has a quantity of sulphur bound to the aromatic nuclei of the polymer and wherein the quantity of nucleus-bound sulphur is 0.05-0.20% by weight. A process for the manufacture of para-aromatic polyamide fiber of increased modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.