Electrochromic compounds

  • US 5,998,617 A
  • Filed: 04/02/1997
  • Issued: 12/07/1999
  • Est. Priority Date: 04/02/1997
  • Status: Expired due to Term
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A compound having the formula:

  • ##STR3## where R1, R4, R6, and R9 are the same or different and are selected from the group consisting of;

    hydrogen and alkyl of C1 to C12 ;

    R2, R3, R7, and R8 are the same or different and are selected from the group consisting of;

    hydrogen, alkenyl, alkyl of C1 to C12, aryl, substituted aryl, alkoxy, phenoxy, and halogenated alkanes of C1 to C12 with at least one of R2, R3, R7 or R8 being hydrogen;

    R5 and R10 are the same or different and are selected from the group consisting of;

    linear and branched alkyl of C1 to C3 ; and

    if R5 and R10 are both linear alkyl, thenat least one of R2, R3, R7, and R8 are the same or different and are selected from the group consisting of;

    alkenyl, alkyl of C1 to C12, aryl, substituted aryl, alkoxy, phenoxy, and halogenated alkanes of C1 to C12, with at least one of R2, R3, R7 or R8 being hydrogen;

    but if R5 and R10 are both methyl or ethel and R1, R3, R4, R6, R8 and R9 are hydrogen, then R2 and R7 are not both methyl, phenyl or methoxy;

    if R1 -R2 is benzo and R4 is hydrogen, or if R3 -R4 is benzo and R1 is hydrogen, or if R2 -R3 is benzo, then R5 and R10 are the same or different and are selected from the group consisting of;

    linear and branched alkyl of C1 to C3, and R6, R7, R8, and R9 are the same or different and are selected from the group consisting of;

    alkyl of C1 to C12 and hydrogen; and

    if R6 -R7 is benzo and R9 is hydrogen, or if R8 -R9 is benzo and R6 is hydrogen, or if R7 -R8 is benzo, then R5 and R10 are the same or different and are selected from the group consisting of;

    linear and branched alkyl of C1 to C3, and R6, R7, R8, and R9 are the same or different and are selected from the group consisting of;

    alkyl and hydrogen.

View all claims
  • 1 Assignment
    ×
    ×

    Thank you for your feedback

    ×
    ×