UV-stabilized compositions and methods

  • US 5,280,380 A
  • Filed: 09/02/1992
  • Issued: 01/18/1994
  • Est. Priority Date: 04/30/1990
  • Status: Expired due to Term
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First Claim
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1. A solution which comprises (a) a non-aqueous solvent, which is suitable for a medium of variable transmittance in a solution-phase electrochromic device, and (b) a compound of Formula I ##STR2## wherein R1 is alkyl of 1 to 20 carbon atoms.

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