中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

125 records (took 0.024 seconds)

    21.
    发明专利
    未知

    公开(公告)号：DK160339B

    公开(公告)日：1991-02-25

    申请号：DK124282

    申请日：1982-03-19

    Applicant: BASF AG

    Inventor： HOFFMANN GERHARD ,  NEUMANN PETER

    IPC: C07D209/46 ,  C07D209/50 ,  G03G5/06

    Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the general formula (I) where R1, R2, R3 and R4 are each hydrogen or a non-ionic substituent, X is the radical of a methyleneactive compound, or of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, and Z is hydrogen, methyl or phenyl, and the production of this recording medium.

    QUINOPHTHALONE DYES
    23.
    发明专利
    QUINOPHTHALONE DYES 未知

    公开(公告)号：GB2180844B

    公开(公告)日：1989-09-06

    申请号：GB8622629

    申请日：1986-09-19

    Applicant: BASF AG

    Inventor： LOTSCH WOLFGANG ,  NEUMANN PETER ,  KOWARSCH HEINRICH

    IPC: C09B25/00 ,  C09B57/04

    Abstract: Quinophthalone dyes of the formula (I) where X is O or NC-C-R, where R is cyano, unsubstituted or N-substituted carbamyl, carboalkoxy, quinazolonyl, quinoxalinonyl, benzimidazolyl or benzothiazolyl and the rings A, B, the quinoline system and/or the fused benzo systems may be substituted by insolubilizing groups, in surface finishes, printing inks and plastics, in particular in thermoplastics, gives bright hues having good fastness properties coupled with high thermostability.

Patent Agency Ranking