Substituted p-aminostyryl 5-chloroindolinium dyes
    4.
    发明授权
    Substituted p-aminostyryl 5-chloroindolinium dyes 失效
    取代的P-AMINOSRYRYL 5-CHLOROINDOLINIUM DYES

    公开(公告)号:US3888850A

    公开(公告)日:1975-06-10

    申请号:US34946073

    申请日:1973-04-09

    Applicant: SANDOZ AG

    CPC classification number: C09B23/145 Y10S8/927

    Abstract: Dyes of the formula

    WHEREIN R is lower alkyl or substituted lower alkyl, R'' is hydrogen or methyl, R1 is alkyl of at least two carbon atoms, haloalkyl of at least two carbon atoms, aryl, substituted aryl, benzyl or substituted benzyl, R2 is methyl or ethyl, and A is an anion, are useful for dyeing and printing polymers and copolymers of acrylonitrile and polyamides and polyesters which have been modified by the introduction of acid groups.

Patent Agency Ranking