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Fluorone and pyronin y derivatives

  • US 5,451,343 A
  • Filed: 11/19/1993
  • Issued: 09/19/1995
  • Est. Priority Date: 05/20/1991
  • Status: Expired due to Fees
First Claim
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1. A photohardenable composition comprising a polymerizable compound and a compound of the formula I or II ##STR13## where R1, R2, R5 and R6 are the same or different and represent a hydrogen atom or a halogen atom and R1 and R2 can combine to form a ring;

  • R3 and R4 are the same or different and represent a hydrogen atom, a halogen atom, a benzoyl group, a group of the formula --L(CH2)n R8 where n is 1 to 8, R8 is hydrogen, hydroxy, amino, dialkylamino, --COR16 or --COOR14 where R16 is hydrogen, chlorine, COCl, C1-C8 alkyl, NR2 or aryl and R14 is hydrogen, C1-C8 alkyl, aryl, COR, 2,4-dinitrophenyl, N-imido or NR2 and L is a direct bond or >

    C═

    O, provided that at least two of R1 -R6 are iodo or bromo;

    W is ═

    O or ═

    NR2 +Z-- where R is hydrogen or lower alkyl, Z is a counter ion, when W is ═

    O, W1 is hydrogen or --OR9 where R9 is hydrogen, C1-C8 alkyl, acyl or a group of the formula --(CH2)n R10 where n is 1 to 8 and R10 is amino, dialkylamino, hydroxy, acryloyl or methacryloyl and when W is ═

    NR2 +Z--, W1 is hydrogen or --NR2 ;

    Y is oxygen, sulfur, selenium, tellurium, >

    C═

    O, or N--R13 where R13 is 4-methylphenyl, A is hydrogen, alkenyl, alkyl, or an electron withdrawing group (EWG) selected from the group consisting of COOR11, COR12, C(O)OCOR11, CONR2, CN, NO2, NCS, NCO, SO2 R12, SO3 R11, SO2 NR2, CX32 ;

    R11 is hydrogen, alkyl, aryl, or aralkyl R12 is hydrogen, alkyl, aryl, or aralkyl, X2 can be the same or different and is a halogen atom.

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