Patent · US Active

Electrochromic devices and polymer compositions

US9011727B2 · kind B2 · utility

1Cited by

9References

14Claims

0Family size

Assignee

BASF SE

Inventors

Nancy Cliff · Ringwood, US
David Yale · Bethel, US
Deanna Rodovsky · Seattle, US
Jennifer Jankauskas · Putnam Valley, US

Key dates

Filing date	Apr 7, 2009
Grant date	Apr 21, 2015
Priority date	—
Expiry date	Feb 5, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02F2202/022
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Blending an electrically active, anodically coloring, electrochromic polymer with a non-electrochromic, non-electrically conductive binder polymer greatly enhances the performance of the anodically coloring, electrochromic polymer in an electrochromic device over time. In addition to improved physical characteristics of the blend, e.g., film build, durability etc, the coloristic properties, including color space and color strength, of the device comprising the blend are more durable than when using the neat polymer, and in certain instances, the color space and color intensity provided by the blend is superior to that available from the neat polymer.

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