Patent · US Expired

Electret fibers having improved charge stability, process for the production thereof and textile material containing these electret fibers.

US5871845A · kind A · utility

61Cited by

3References

11Claims

0Family size

Assignee

Hiecgst Aktiengesellshat · DE

Inventors

Jorg Dahringer · Bobingen, DE
Werner Groh · Lich, DE
Hans-Tobias Macholdt · Darmstadt, DE
Peter Boening · Wiesbaden, DE

Key dates

Filing date	Mar 9, 1994
Grant date	Feb 16, 1999
Priority date	—
Expiry date	Mar 9, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Electret fibers having improved charge stability are described which are composed of a material which predominantly contains a fiber-forming polymer or polycondensate and 0.01 to 30% by weight (preferably 0.01 to 10, in particular 0.1 to 5%, by weight), based on the weight of the material, of organic or organometallic charge control compounds, as contained in toners for electrophotographic processes, and a process for the production thereof. In addition, textile materials containing these electret fibers are described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.