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    TINTES DE BENZOPIRANO Y SUS PRODUCTOS INTERMEDIOS.
    134.
    发明专利
    TINTES DE BENZOPIRANO Y SUS PRODUCTOS INTERMEDIOS. 未知

    公开(公告)号：MX9704000A

    公开(公告)日：1997-09-30

    申请号：MX9704000

    申请日：1995-11-25

    Applicant: BASF AG

    Inventor： REICHELT HELMUT ,  GRUND CLEMENS ,  WAGENBLAST GERHARD

    IPC: C07D491/052 ,  C07D405/04 ,  C07D491/147 ,  C09B57/00 ,  C09B57/02 ,  D06P1/16 ,  D06P01/16

    Abstract: Tintes de benzopirano de la formula (I), donde n es 1 o 2, X1 es oxígeno o imino, X2 es ciano o carbamoilo, R1 y R2 son independientemente entre ellos alquilo C1-C13, a condicion que la suma total de los átomos de carbono presentes en R1 y R2 sea cuando menos 10, y R3 es hidrogeno, alquilo C1-C6, alcoxi C1-C6, halogeno, ciano, nitro, carbamoilo, mono- o bien di(alquilo C1-C4)carbamoilo, sulfamoilo o bien mono- o bien di(alquilo C1-C4) sulfamoilo, pueden obtenerse a partir de productos intermedios novedosos de iminocoumarina y son utiles para teñir o bien imprimir materiales sintéticos.

    135.
    发明专利
    未知

    公开(公告)号：ID15847A

    公开(公告)日：1997-08-14

    申请号：ID970230

    申请日：1997-01-27

    Applicant: BASF AG

    Inventor： LAMM GUNTHER ,  REICHELT HELMUT ,  WAGENBLAST GERHARD

    IPC: C07D271/06 ,  C07C311/44 ,  C07D271/10 ,  C09B33/10 ,  C09B62/513 ,  C09B31/053 ,  C06P3/16

    Abstract: PCT No. PCT/EP97/00174 Sec. 371 Date Jul. 22, 1998 Sec. 102(e) Date Jul. 22, 1998 PCT Filed Jan. 16, 1997 PCT Pub. No. WO97/27248 PCT Pub. Date Jul. 31, 1997Disazo dyes of formula (I) where one of the two symbols X1 and X2 means hydroxy and the other amino and R1, R2, R3, R4, R5, R6, R7 and R8 are as defined in the specification. The invention also relates to sulphonamides as their intermediate products and to the use of the dyes for the dyeing of natural and synthetic substrates.

    139.
    发明专利
    未知

    公开(公告)号：DE59010014D1

    公开(公告)日：1996-02-08

    申请号：DE59010014

    申请日：1990-09-12

    Applicant: BASF AG

    Inventor： WAGENBLAST GERHARD ,  BACH VOLKER

    IPC: B41M5/36 ,  G02F1/13 ,  G03G5/00 ,  G03G5/024 ,  G03G5/12 ,  G03G13/01 ,  G03G13/056 ,  G03G15/05 ,  G03G15/056

    Abstract: PCT No. PCT/EP90/01539 Sec. 371 Date Mar. 13, 1992 Sec. 102(e) Date Mar. 13, 1992 PCT Filed Sep. 12, 1990 PCT Pub. No. WO91/04514 PCT Pub. Date Apr. 4, 1991.A process for the reversible or irreversible production of an image by imagewise exposure of a recording layer to energy in the presence or absence of an electrical and/or magnetic field, resulting in a pattern of surface charges on the surface of the recording layer corresponding to the imagewise exposure to energy. The recording layer consists essentially of an organic material which solidifies in a glass-like manner, is non-photoconductive or substantially non-photoconductive and contains permanent dipoles, in which the pattern of surface charges is produced without or substantially without the formation of free charge carriers by reversible imagewise alignment of at least some of the permanent dipoles present in the recording layer. The process is advantageously carried out using an apparatus which comprises a suitable recording element, devices for imagewise exposure of the recording layer of the recording element to energy, and a counter-electrode which is in direct contact with the recording layer and can be removed therefrom. The pattern of surface charges produced by the process can be toned with liquid or solid toners. The resultant toner image can then either be fixed on the recording layer or transferred from the recording layer to another surface, after which the pattern of surface charges can be erased by exposing the entire surface to energy. A further image can then be produced. In this way, photocopies can be produced without the need to use the high-voltage sources which are necessary in conventional electrophotographic processes.

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