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    BASIC OXAZINE DYESTUFFS AND PROCESS FOR THEIR PREPARATION
    11.
    发明专利
    BASIC OXAZINE DYESTUFFS AND PROCESS FOR THEIR PREPARATION 未知

    公开(公告)号：CA955256A

    公开(公告)日：1974-09-24

    申请号：CA131396

    申请日：1971-12-30

    Applicant: HOECHST AG

    Inventor： MUNDLOS EBERHARD ,  HERZ LUIS ,  MOHR REINHARD ,  NEEB RUDOLF ,  OSTERMEIER JOHANN

    IPC: C09B19/00

    Abstract: 1339300 Basic oxazine dyestuffs FARBWERKE HOECHST AG 30 Dec 1971 [31 Dec 1970] 60721/71 Heading C4P Novel dyestuffs of the formula (wherein R is optionally substituted C 1-4 alkyl, R 1 and R 2 are each H or optionally substituted C 1-4 alkyl, or -NR 1 R 2 is a heterocyclic radical; R 3 is H or optionally substituted C 1-4 alkyl and R 4 is H or optionally substituted alkyl or aryl, or R 4 forms, together with the nitrogen atom and R 3 or the adjacent benzene nucleus and optionally via a further hetero atom, a heterocyclic radical; X (-) is an anion; and the benzene nucleus "a" may carry further non-ionic substituents or a fused-on benzene ring) are prepared by condensing (i) a 2-nitroso-5-NR 3 R 4 - phenol with a 2-NR 1 R 2 -hydroquinone di-(optionally substituted-alkyl) ether; or (ii) a 3-NR 3 R 4 -phenol with a 2-nitroso-5-NR 1 R 2 - hydroquinone di-(optionally substituted-alkyl) ether, both condensations being effected using salts of the starting materials which provide the anion X (-) and/or in the presence of a strong acid supplying the anion X (-) and, if desired, converting this anion in the product into another anion or replacing it by another anion. Also, products wherein R, R 1 , R 2 and X (-) are as defined above, R 3 is H or optionally substituted C 1-4 alkyl and R 4 is H or optionally substituted alkyl or aryl, but R 3 and R 4 cannot both be H, and ring a carries a fused-on benzene nucleus, are prepared by condensing a 2-nitroso-5- NR 1 R 2 -hydroquinone di-(optionally substitutedalkyl) ether with 2-hydroxynaphthalene in an acid medium supplying X (-) and then treating the resulting benz[a]phenoxazine with a primary or secondary amine NHR 3 R 4 . The dyestuffs are used for dyeing or printing tannined cellulose, silk, leather, acetate rayon, polyamide, acid-modified polyamide, polyester, polyacrylonitrile or polyvinylidene cyanide in shades varying from greenish blue through blue to reddish blue.

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