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    52.
    发明专利
    未知

    公开(公告)号：NO174604B

    公开(公告)日：1994-02-21

    申请号：NO870012

    申请日：1987-01-02

    Applicant: BASF AG

    Inventor： HOFFMANN GERHARD ,  KURTZ KARL-RUDOLF

    IPC: G03F7/00 ,  G03F7/30 ,  G03F7/32

    Abstract: Relief plates crosslinked by photopolymerization are produced by exposing layers which are crosslinkable by photopolymerization imagewise to actinic light and washing out the noncrosslinked parts of the layers with a developer, by a process in which the developer used contains, as an essential component, a branched or straight-chain, monoolefinically, diolefinically or triolefinically unsaturated acryclic or saturated or monoolefinically, diolefinically or triolefinically unsaturated cyclic aliphatic hydrocarbon, alcohol or ketone of 8 to 15 carbon atoms.

    55.
    发明专利
    未知

    公开(公告)号：DK162126C

    公开(公告)日：1992-02-17

    申请号：DK123882

    申请日：1982-03-19

    Applicant: BASF AG

    Inventor： ECKELL ALBRECHT ,  EILINGSFELD HEINZ ,  ELZER ALBERT ,  FEICHTMAYR FRANZ ,  HOFFMANN GERHARD ,  LEYRER REINHOLD J ,  NEUMANN PETER

    IPC: G03G5/00 ,  C07D209/44 ,  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 I where R1, R2, R3 and R4 are each hydrogen or a non-ionic substituent, X and Y are each the radical of a methylene-active 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.

    56.
    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.

    PRODUCTION OF RELIEF PLATES AND PRINTING PLATES
    60.
    发明专利
    PRODUCTION OF RELIEF PLATES AND PRINTING PLATES 未知

    公开(公告)号：AU567531B2

    公开(公告)日：1987-11-26

    申请号：AU2288783

    申请日：1983-12-23

    Applicant: BASF AG

    Inventor： BRONSTERT BERND ,  HOFFMANN GERHARD ,  LYNCH JOHN

    IPC: G03C1/72 ,  G03F7/004 ,  G03F7/031 ,  G03F7/105 ,  G03F7/26 ,  G03C1/68 ,  G03F7/02

    Abstract: Relief plates and printing plates are produced by a positive-working process, using a photopolymerizable layer which contains one or more photopolymerizable, olefinically unsaturated compounds, one or more photoinitiators which can be activated by UV light, and a combination of a phenothiazinium, phenoxazinium, phenazinium or acridinium dye with a mild reducing agent which, on exposure to visible light, is capable of reducing the dye in the excited electronic state. The photopolymerizable layer is exposed imagewise to light having a wavelength longer than 450 nm, and simultaneously or subsequently exposed uniformly to light having a wavelength of from 300 to 420 nm, after which the unpolymerized areas of the layer are removed.

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