1.
    发明专利
    未知

    公开(公告)号:DE3770966D1

    公开(公告)日:1991-08-01

    申请号:DE3770966

    申请日:1987-02-24

    Applicant: BASF AG

    Abstract: The light-sensitive element has a light-sensitive registration layer applied to a dimensionally stable base, possibly using one or more intermediate layers. The layers have good photographic properties and long shelf life, and to control the photochemical properties of the light-sensitive registration layer and/or any intermediate layer present, they incorporate specific azo or azoxy dyestuffs containing sulpho groups of the type defined in more detail in Claim 1. Suitable dyestuffs to be used according to the invention may be obtained, for example, by self-condensation of 5-nitro-o-toluenesulphonic acid.

    5.
    发明专利
    未知

    公开(公告)号:DE3776969D1

    公开(公告)日:1992-04-09

    申请号:DE3776969

    申请日:1987-05-23

    Applicant: BASF AG

    Abstract: Photosensitive recording element, esp. for the prodn. of printing and relief plates or resist patterns, consists of (a) a dimensionally stable support with (b) a solid photosensitive coating and opt. (c) intermediate layer(s) between (a) and (b), in which (b) and/or (c) contains light-absorbing inert cpd(s). (I).The novelty is that (I) is a 4,4'-bis(s-triazinylamino) stilbene-2,2'-disulphonic acid or salt of formula (I). In (I) M is H or an alkali metal, ammonium or amine cation; R1 and R2 each are opt. substd. s-triazine rings. (I) can be prepd. by standard methods given in literature.

    6.
    发明专利
    未知

    公开(公告)号:DE3704695A1

    公开(公告)日:1988-08-25

    申请号:DE3704695

    申请日:1987-02-14

    Applicant: BASF AG

    Abstract: For coating printing cylinders or sleeves with a seamless, smooth photosensitive layer, two or more strata of a thin, prefabricated, essentially solvent-free, unsupported, thermoplastically processible, solid, photosensitive layer are applied to the printing cylinder or the sleeve, without bubbles and with displacement of the air between the individual strata, and the total photosensitive layer material is then heated under pressure and with joining or fusion of the individual strata to form a single, continuous photosensitive layer, and the surface of the resulting photosensitive layer is aftertreated to shape it exactly to size and is smoothed, with formation of an exactly cylindrical shape.

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