Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such films and devices
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United States of America Patent
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Jun 12, 2001
Grant Date -
N/A
app pub date -
Feb 18, 1999
filing date -
Feb 26, 1993
priority date (Note) -
Expired
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Abstract
The present invention relates to electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films and processes for making such solid films and devices. The electrochromic polymeric solid films of the present invention exhibit beneficial properties and characteristics, especially when compared to known electrochromic media. The electrochromic polymeric solid films are transformed in situ from a low viscosity electrochromic monomer composition by exposure to electromagnetic radiation, and in so doing minimum shrinkage occurs. The electrochromic polymeric solid films of the present invention also perform well under prolonged coloration, outdoor weathering and all-climate exposure, and provide an inherent safety aspect not known to electrochromic media heretofore.
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