3.
    发明专利
    未知

    公开(公告)号:NO179346B

    公开(公告)日:1996-06-10

    申请号:NO914219

    申请日:1991-10-28

    Applicant: BASF AG

    Abstract: The invention relates to a process for the production of relief formes. After exposing layers which can be crosslinked by photopolymerisation to actinic light through an image, the uncrosslinked portions of the layers are washed out with hydrocarbon solvents or mixtures of hydrocarbon solvents and alcohols, certain hydrogenated petroleum fractions being used as hydrocarbon solvents. The process is suitable, in particular, for the production of flexographic printing formes.

    7.
    发明专利
    未知

    公开(公告)号:NO141506C

    公开(公告)日:1980-03-26

    申请号:NO743605

    申请日:1974-10-04

    Applicant: BASF AG

    Abstract: The invention relates to relief plates for flexographic printing comprising a relatively soft elastomeric base (U) having a modulus of elasticity of from 10 to 200 kg/cm2 and a thickness of from 0.5 to 6 mm and, firmly bonded thereto, a thin, relatively hard, difficultly soluble intermediate layer Z having a modulus of elasticity of from 1 x 103 to 2.1 x 106 kg/cm2 and a thickness of from 5 to 500 mu and, firmly bonded to said intermediate layer Z, a relief layer P' consisting of a photocrosslinked elastomeric mixture having a modulus of elasticity of from 30 to 2000 kg/cm2 and a thickness of from 200 to 300 mu , the modulus of elasticity of the photocrosslinked relief layer P' being the same as or higher than that of the base U and the neutral surface of the relief plate lying in or near the intermediate layer Z. The invention also relates to photosensitive laminates for the production of such plates.

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