Method for producing refractory filaments
US5827797A · kind A · utility
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for producing fibers of refractory material. In one embodiment, a dispersion of particles of refractory material is prepared first. The dispersion then is mixed with a carrier solution of a salt of cellulose xanthate to form a spin mix. Using general wet spinning techniques, a filament of regenerated cellulose is formed from the spin mix. The filament has the particles dispersed therein. At this point, the filament can be utilized as a mixture of cellulose and refractory material, or it can be heat treated. If heated, the filament is raised to sufficient temperatures and over sufficient durations to remove substantially all of the regenerated cellulose and to sinter the particles of refractory material to form a filament.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.