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    MULTI-LAYER ELEMENTS SUITABLE FOR THE PRODUCTION OF PRINTING PLATES AND RELIEF COPIES INCLUDING AN ADHESIVE LAYER CONTAINING ISOCYANATE HARDENED RESIN AND OH-FREE POLYCARBONATE
    2.
    发明专利
    MULTI-LAYER ELEMENTS SUITABLE FOR THE PRODUCTION OF PRINTING PLATES AND RELIEF COPIES INCLUDING AN ADHESIVE LAYER CONTAINING ISOCYANATE HARDENED RESIN AND OH-FREE POLYCARBONATE 未知

    公开(公告)号：CA1166884A

    公开(公告)日：1984-05-08

    申请号：CA393501

    申请日：1982-01-04

    Applicant: BASF AG

    Inventor： JUN MONG-JON ,  RICHTER PETER ,  BARZYNSKI HELMUT

    IPC: G03F7/09 ,  G03C1/93 ,  G03F7/11 ,  G03F7/30 ,  G03C1/00

    Abstract: This invention relates to a multi-layer element, suitable for the production of printing plates and relief plates, which comprises (a) a photosensitive layer of a mixture which is soluble and/or dispersible in aromatic hydrocarbon solvents or aliphatic halohydrocarbon solvents and consists essentially of at least one elastomeric polymer as the binder, at least one photopolymerizable, ethylenically unsaturated monomer compatible with the binder, and a photopolymerization initiator which is activated by actinic light, with or without conventional additives, (b) a sheet-like polyester shaped article as the dimensionally stable base for the photosensitive layer (a) and (c) a thin adhesive layer, between the layer (a) and base (b), consisting of a thermally hardened mixture which is insoluble in the aromatic hydrocarbon solvents or aliphatic halohydrocarbon solvents and contains (c1) from 90 to 40% by weight, based on the sum of (c1) and (c2), of à resin which has been hardened and crosslinked with isocyanate, and which has from about 4 to 20% by weight, based on the non-crosslinked and hardenable resin, of free OH groups before hardening and crosslinking with isocyanate, and (c2) from 10 to 60% by weight, based on the sum of (c1) and (c2), of an OH-free polycarbonate which is compatible with the resin (c1) before the latter is hardened and crosslinked. The above defined multi-layer element possesses improved stability in processing and use.

    PHOTOPOLYMERIZABLE COMPOSITIONS AND PHOTO-CURABLE ELEMENTS MADE THEREFROM
    3.
    发明专利
    PHOTOPOLYMERIZABLE COMPOSITIONS AND PHOTO-CURABLE ELEMENTS MADE THEREFROM 未知

    公开(公告)号：CA1152247A

    公开(公告)日：1983-08-16

    申请号：CA362514

    申请日：1980-10-16

    Applicant: BASF AG

    Inventor： HEINZ GERHARD ,  RICHTER PETER ,  JUN MONG-JON

    IPC: C08F2/00 ,  C08F2/48 ,  C08F16/12 ,  C08F16/14 ,  C08F20/10 ,  C08F20/18 ,  C08F287/00 ,  C08F297/00 ,  C08F297/04 ,  C08L53/02 ,  G03F7/033 ,  G03C1/68

    Abstract: O.Z. 0050/034095 PHOTOPOLMYERIZABLE COMPOSITIONS AND PHOTO-CURABLE ELEMENTS MADE THEREFROM Photopolymerizable compositions based on an elastomeric styrene-diene block polymer, one or more photopolymerizable olefinically unsaturated monomers and one or more photopolymerization initiators exhibit improved properties if they contain, as an essential-constituent, an elastomeric block copolymer of the general structure A-B-C, where A is a thermoplastic, non-elastomeric polymer block based on styrene compounds and having a second order transition point above +25.degree.C, B is an elastomeric polymer block based on butadiene and/or isoprene and having a second order transit1on point below -20.degree.C and C is a polymer block, different from B, having a second order transition point of from - 30.degree.C to + 15.degree.C, C being either a homopolymer or copolymer block based on butadiene or isoprene or a random copolymer block based on conjugated dienes and styrene compounds. The photopolymerizable compositions may be used, inter alia, for the production of photo-curable adhesives, resillent and flexible sheet material and, in particular, flexographic relief printing plates.

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