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    22.
    发明专利
    未知

    公开(公告)号：NO141506B

    公开(公告)日：1979-12-17

    申请号：NO743605

    申请日：1974-10-04

    Applicant: BASF AG

    Inventor： ELZER ALBERT ,  RICHTER PETER ,  WIGGER AUGUST ,  WERTHER HEINZ-ULRICH ,  ZUERGER MANFRED

    IPC: G03F7/09 ,  G03F7/095 ,  G03F7/00 ,  G03F7/11 ,  B41N1/06 ,  G03F7/02

    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.

    23.
    发明专利
    未知

    公开(公告)号：CH614725A5

    公开(公告)日：1979-12-14

    申请号：CH1686673

    申请日：1973-11-30

    Applicant: BASF AG

    Inventor： VOLKERT OTTO DR ,  WIGGER AUGUST DR ,  ZUERGER MANFRED ,  RICHTER PETER DR

    IPC: C08F299/00 ,  B05D3/06 ,  C08F283/00 ,  C08F290/00 ,  C08G18/00 ,  C08G18/63 ,  C08J5/18 ,  B32B25/00

    Abstract: 1450906 Polyurethane layers; photopolymerizing unsaturated monomers BASF AG 3 Dec 1973 [4 Dec 1972] 55919/73 Headings C3R and C3P Polyurethane layers are prepared by adding a compatible monomer having at least two photocross-linkable C-C multiple bonds or a compatible monomer mixture comprising at least 50% by weight of one of such monomers and not more than 50% by weight of a photopolymerizable monoethylenically unsaturated monomer, and optionally also a photopolymerization initiator, to a liquid polyurethane elastomer forming reaction mixture comprising (A) (i) a polyether, polyester, hydroxypolyether urethane or hydroxypolyester urethane or a mixture thereof with a polyalcohol and/or a diamino and (ii) a diisocyanate or (B) (i) a prepolymer of a hydroxyl compound as defined in (A) and a diisocyanate and (ii) a polyester, polyether, hydroxypolyester urethane, hydroxypolyetherurethane, polyhydric alcohol, or diamine or a mixture of two or more thereof, the resulting mixture containing a major amount of the polyurethane elastomer-forming reaction mixture, applying the resulting mixture to a substrate to form a layer, irradiating the layer with electromagnetic radiation of wavelength less than 0À7 Ám to effect photocrosslinking of the monomer(s) and gelling of the layer and thermally curing the so-treated layer. The layer is suitably formed on a continuously moving substrate and has a thickness of from 0À2 to 5 mm. Conventional polyurethane elastomer-forming reactants are used. The monomer having at least two C-C multiple bonds is preferably an olefinically poly-unsaturated carboxylate, for example a diester of a C 2-6 aliphatic diol and acrylic or methacrylic acid, a triester of a C 3-10 aliphatic triol and acrylic or methacrylic acid, a divinyl ester of a C 2-8 dicarboxylic acid, a diallyl ester of a C 2-8 dicarboxylic acid and a vinyl ester or allyl ester of a C 3-5 olefinically unsaturated monocarboxylic acid. The unsaturated monomers are preferably used in amounts not exceeding 10% weight of the reaction mixture.

    PROCESS AND APPARATUS FOR THE PRODUCTION OF EXPOSED PRINTING PLATES
    24.
    发明专利
    PROCESS AND APPARATUS FOR THE PRODUCTION OF EXPOSED PRINTING PLATES 未知

    公开(公告)号：CA1058936A

    公开(公告)日：1979-07-24

    申请号：CA220347

    申请日：1975-02-18

    Applicant: BASF AG

    Inventor： LENZ WERNER ,  WOELLHAF JOSEF ,  SPRENG KLAUS ,  ZUERGER MANFRED ,  HECKE PAUL ,  HOFFMANN GERHARD ,  OBRADOVIC MILAN

    IPC: G03C1/74 ,  B29C31/04 ,  B29C31/06 ,  B29C33/26 ,  B29C35/08 ,  B29C43/10 ,  B29C43/18 ,  B29C43/34 ,  B29C70/78 ,  G03F7/16 ,  G03F7/20 ,  G03F7/26 ,  G03B27/04

    Abstract: An apparatus for the production of exposed printing plates comprising a mold having a first wall formed by the support of the printing plate to be produced and a second wall formed by a glass plate covered with an image-bearing transparency; means for introducing a predetermined amount of a fluid photopolymerizable material under pressure into the mold, said predetermined amount substantially corresponding to the volume of the resin layer of the exposed printing plate to be produced; first and second members which are movable relative to one another, said first member carrying the glass plate and said second member carrying the support, movement of the said two members toward each other serving to close said mold; at least one source of actinic radiation located in such a way that the layer of fluid photopolymerizable material can be exposed through the glass plate; and means provided on the said second member for so adjusting the support that the latter's surface is equidistant from the surface of the glass plate, and maintaining the distance between the said two surfaces during exposure of the layer of fluid photopolymerizable material, said introducing means introducing the fluid photopolymerizable material into the mold under pressure, which causes the glass plate to bend or dome outwardly of the mold, and said support-adjusting means consists for so bending or doming the support that its bent or domed surface is equidistant from the bent or domed surface of the glass plate, and for maintaining the distance between the said two surfaces during exposure of the fluid photopolymerizable material through the glass plate using said source of actinic radiation. The apparatus of the invention can be manufactured and operated easily and economically.

    MANUFACTURE OF THIN LAYERS OF POLYURETHANE ELASTOMERS
    26.
    发明专利
    MANUFACTURE OF THIN LAYERS OF POLYURETHANE ELASTOMERS 未知

    公开(公告)号：CA1007595A

    公开(公告)日：1977-03-29

    申请号：CA187265

    申请日：1973-12-03

    Applicant: BASF AG

    Inventor： VOLKERT OTTO ,  WIGGER AUGUST ,  ZUERGER MANFRED ,  RICHTER PETER

    IPC: C08F299/00 ,  B05D3/06 ,  C08F283/00 ,  C08F290/00 ,  C08G18/00 ,  C08G18/63 ,  C08J5/18

    Abstract: 1450906 Polyurethane layers; photopolymerizing unsaturated monomers BASF AG 3 Dec 1973 [4 Dec 1972] 55919/73 Headings C3R and C3P Polyurethane layers are prepared by adding a compatible monomer having at least two photocross-linkable C-C multiple bonds or a compatible monomer mixture comprising at least 50% by weight of one of such monomers and not more than 50% by weight of a photopolymerizable monoethylenically unsaturated monomer, and optionally also a photopolymerization initiator, to a liquid polyurethane elastomer forming reaction mixture comprising (A) (i) a polyether, polyester, hydroxypolyether urethane or hydroxypolyester urethane or a mixture thereof with a polyalcohol and/or a diamino and (ii) a diisocyanate or (B) (i) a prepolymer of a hydroxyl compound as defined in (A) and a diisocyanate and (ii) a polyester, polyether, hydroxypolyester urethane, hydroxypolyetherurethane, polyhydric alcohol, or diamine or a mixture of two or more thereof, the resulting mixture containing a major amount of the polyurethane elastomer-forming reaction mixture, applying the resulting mixture to a substrate to form a layer, irradiating the layer with electromagnetic radiation of wavelength less than 0À7 Ám to effect photocrosslinking of the monomer(s) and gelling of the layer and thermally curing the so-treated layer. The layer is suitably formed on a continuously moving substrate and has a thickness of from 0À2 to 5 mm. Conventional polyurethane elastomer-forming reactants are used. The monomer having at least two C-C multiple bonds is preferably an olefinically poly-unsaturated carboxylate, for example a diester of a C 2-6 aliphatic diol and acrylic or methacrylic acid, a triester of a C 3-10 aliphatic triol and acrylic or methacrylic acid, a divinyl ester of a C 2-8 dicarboxylic acid, a diallyl ester of a C 2-8 dicarboxylic acid and a vinyl ester or allyl ester of a C 3-5 olefinically unsaturated monocarboxylic acid. The unsaturated monomers are preferably used in amounts not exceeding 10% weight of the reaction mixture.

    28.
    发明专利
    未知

    公开(公告)号：DE58902095D1

    公开(公告)日：1992-10-01

    申请号：DE58902095

    申请日：1989-01-28

    Applicant: BASF AG

    Inventor： KURTZ KARL-RUDOLF DR ,  KOCH HORST DR ,  TELSER THOMAS DR ,  ZUERGER MANFRED

    IPC: G03F7/004 ,  C08F2/50 ,  G03F7/00 ,  G03F7/027 ,  G03F7/028 ,  G03F7/033

    Abstract: A novel sheet-like light-sensitive recording material I with at least one photopolymerisable, relief-forming layer (A) which, relative to (A), contains a1) 20 to 99.499 % by weight of at least one polymeric binder from the group comprising random ethylene/propylene/alkadiene terpolymers of an ethylene content of from 40 to 80 % by weight and a double bond content of 2 to 20 olefinic double bonds per 1000 carbon atoms, a2) 0.001 to 10 % by weight of at least one photopolymerisation initiator, a3) 0.5 to 50 % by weight of at least one monomer which is compatible with the binder (a1) and contains at least one photopolymerisable olefinic double bond, and a4) 0 to 40 % by weight of at least one auxiliary, by means of which the property pattern is varied, and the production of novel relief plates, relief printing plates and photoresists from these novel recording materials I and novel flexographic printing plates which have been produced from the recording materials I.

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