Refractory filaments
US6395080B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A filament produced from a wet-spinning process. The process comprising (a) preparing a dispersion of particles of refractory material; (b)preparing a spin mix by mixing said dispersion with a carrier solution comprising a salt of cellulose xanthate, wherein the weight ratio of said particles to cellulose of said cellulose xanthate in said spin mix is greater than about 1:4; (c) wet spinning said spin mix to form at least one filament of cellulose having at least a portion of said particles dispersed therein; and (d) optionally heating said at least one filament to sufficient temperatures and over sufficient durations to remove substantially all of said regenerated cellulose and to sinter said refractory particles to thereby form said at least one filament of refractory material is disclosed for producing fibers of refractory material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.