DYE-CONTAINING LAYER OF A PHOTOPOLYMERIZABLE MIXTURE, AND THE PRODUCTION OF RELIEF PLATES AND PRINTING PLATES

    公开(公告)号:CA1252330A

    公开(公告)日:1989-04-11

    申请号:CA443943

    申请日:1983-12-21

    Applicant: BASF AG

    Abstract: A layer of a photopolymerizable mixture for the production of relief plates and printing plates contain (a) one or more photopolymerizable olefinically unsaturated compounds, (b) one or more photoinitiators which, on exposure, initiate rapid photopolymerization in the layer, and (c) a combination, which on exposure does not initiate any appreciable photopolymerization in the layer and comprises (c1) a soluble acridinium, phenothiazinium, phenoxazinium or phenazinium dye and (c2) a mild reducing agent for the dye (c1). The layer gives an improved relief image (greater shadow well depths) in the production of relief plates, and is also advantageous in the production of gravure printing plates. On exposure, it undergoes a color change which facilitates evaluation of the exposed layers before development.

    17.
    发明专利
    未知

    公开(公告)号:ES2183353T3

    公开(公告)日:2003-03-16

    申请号:ES98919152

    申请日:1998-03-25

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing shaped bodies, preferably for a film-like shaped body, comprising the following steps: I) compounding and melt extrusion of a mixture (I) comprising a mixture (II) containing a) 1 to 95 wt. % of at least a pigment (III) with a primary particle size ranging from 5 nm to 20mm, selected from the group consisting of one electrochemically inert solid (IIIa), of a compound (IIIb) capable of giving off lithium ions when charged, and a compound (IIIc), capable of receiving lithium ions when charged, and a mixture of solid (IIIa) with compounds (IIIb) or compound (IIIc), b) 5 to 99 wt. % of at least one polymer binding agent (IV), and c) 0 to 200 wt. % of at least one softening agent (V) in relation to the overall amount of constituents a) and b), wherein the weight percentage of mixture (II) in mixture (I) ranges from 1 to 100 wt. %, and excluding mixtures (I) comprising mixtures (II) containing a copolymer consisting of vinylidene fluoride (Vdf) and hexafluoropropylene (HFP) with a HFP content ranging from 8 to 25 wt. % as a polymer binding agent (IV) and a compound as a softening agent (V) which is selected from the group consisting of dibutyl phthalate, dimethyl phthalate, diethyl phthalate, tris(butoxy)ethyl phosphate, propylene carbonate, ethylene carbonate, trimethyl trimellitate and mixtures thereof.

    19.
    发明专利
    未知

    公开(公告)号:BR9808983A

    公开(公告)日:2000-08-01

    申请号:BR9808983

    申请日:1998-03-25

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing shaped bodies, preferably for a film-like shaped body, comprising the following steps: I) compounding and melt extrusion of a mixture (I) comprising a mixture (II) containing a) 1 to 95 wt. % of at least a pigment (III) with a primary particle size ranging from 5 nm to 20mm, selected from the group consisting of one electrochemically inert solid (IIIa), of a compound (IIIb) capable of giving off lithium ions when charged, and a compound (IIIc), capable of receiving lithium ions when charged, and a mixture of solid (IIIa) with compounds (IIIb) or compound (IIIc), b) 5 to 99 wt. % of at least one polymer binding agent (IV), and c) 0 to 200 wt. % of at least one softening agent (V) in relation to the overall amount of constituents a) and b), wherein the weight percentage of mixture (II) in mixture (I) ranges from 1 to 100 wt. %, and excluding mixtures (I) comprising mixtures (II) containing a copolymer consisting of vinylidene fluoride (Vdf) and hexafluoropropylene (HFP) with a HFP content ranging from 8 to 25 wt. % as a polymer binding agent (IV) and a compound as a softening agent (V) which is selected from the group consisting of dibutyl phthalate, dimethyl phthalate, diethyl phthalate, tris(butoxy)ethyl phosphate, propylene carbonate, ethylene carbonate, trimethyl trimellitate and mixtures thereof.

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