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8-(anilino)-1-naphthalenesulfonate analogs

  • US 6,218,571 B1
  • Filed: 10/27/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 10/27/1999
  • Status: Expired due to Term
First Claim
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1. An 8-(anilino)-1-naphthalenesulfonate (ANS) analog which is capable of reacting with 3-methyl-2-benzothiazolinone hydrazone hydrochloride (MBTH), or an analog thereof, to produce a dye product having reduced drift as compared to the dye product produced upon reaction of ANS and MBTH or an analog thereof, wherein said ANS analog comprises at least one alkyl substituent bonded to the phenyl moiety, with the proviso that when said substituent is methyl, said substituent is not present at positions 3′

  • ,4′

    or 5′

    .

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