Patent · US Expired

Alkali or alkaline earth salts of sulfosuccinic acid esters as internal antistatic agents, take-off and winding aids for transparent polycarconate films

US5140056A · kind A · utility

1Cited by

12References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Volker Wiskamp · Neheim, DE
Dittmar Nerger · Krefeld, DE
Bernhard Schulte · Krefeld, DE
Werner Waldenrath · Cologne, DE

Key dates

Filing date	Feb 21, 1990
Grant date	Aug 18, 1992
Priority date	—
Expiry date	Feb 21, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S524/911
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to the use of salts of sulfosuccinic acid esters as internal antistatic agents, take-off and winding aids for transparent cast films of polycarbonates, to a process for the production of cast polycarbonate films and to the cast polycarbonate films themselves containing salts of sulfosuccinic acids and also to the use of the new cast polycarbonate films in the electrical field and optical field.

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