Patent · US Active

Devices containing compositions comprising cathodically coloring electrochromic polymers and binder polymers

US8023171B2 · kind B2 · utility

0Cited by

6References

15Claims

0Family size

Assignee

BASF SE

Inventors

Nancy Cliff · Ringwood, US
David Yale · Bethel, US
Jennifer Jankauskas · Putnam Valley, US
Ece Unur · Gainesville, US

Key dates

Filing date	Mar 30, 2010
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Mar 30, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02F2001/15145
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Electrically active, cathodically coloring electrochromic polymers are blended with a non-electrochromic, non-electrically conductive binder polymer to provide an electrochomic composition with greatly enhanced performance in an electrochromic device over time. It is also found that blending an electrochromic polymer with a non-coloring electroactive material allows for greater design in preparing electrochromic devices as it enables the use of a higher amount of typically low coloring anodic materials due to increased need for charge balancing.

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