Flint Group Germany Gmbh

Basf Drucksysteme Gmbh

Basf Aktiengesellschaft

Other

Basf Lacke + Farber Aktiengesellschaft

Basf Drucksytems Gmbh

Alfred Leinenbach

Uwe Stebani

Axel Sanner

Thomas Telser

Margit Hiller

Michael Gotsche

Sabine Philipp

Jochen Unglaube

Markus Mühlfeit

Luc H Leenders

Rainer Blum

Karl Kolter

Maximilian Angel

Hieronymus Andriessen

Thomas Loerzer

Armin Becker

Keith Leslie Rutherford

Reinhold Dieing

Hartmut Sandig

Friedrich Goffing

Peter Hössel

Joelle Bedat

Josef Rothen

Uwe Müller

Klaus Bennink

Martin Schwiertz

Wolfgang Wenzl

Eddy Daems

Claudia May

Martin Schnell

Markus T&ouml;nnessen

Christian Arnold

Hans-Jurgen Nisslmuller

The invention relates to a laser-ablatable mask film for the exposing of relief printing plates and screen printing stencils, comprising at least (i) a dimensionally stable base sheet, (ii) a UV-transparent adhesion layer, and (iii) a laser-ablatable mask layer, characterized in that the laser-ablatable mask layer (iii) comprises a) a binder comprising a crosslinked polyvinyl alcohol, b) a material which absorbs UV/VIS light and IR light, and c) optionally an inorganic filler.

Laser-ablatable mask film

Methods for producing cylindrical flexographic printing elements, the cylindrical flexographic printing elements having a relief-forming layer, and the relief-forming layer being produced by successive application of a plurality of layers of a relief-forming material in liquid melt form, preferably of a photopolymerizable material in liquid melt form, to a rotating cylindrical sleeve in a continuous process.

Method for producing cylindrical flexo printing elements

A laser-engravable pad printing plate comprising at least

Laser-engravable pad printing plate

A cylinder () comprising a cylindrical body () is provided. A first proportion of the circumferential face () of the cylindrical body () is of porous and gas-permeable configuration and a second proportion of the circumferential face () of the cylindrical body () is of gas-impermeable configuration, wherein the porous, gas-permeable first proportion of the circumferential face () is in communication with at least one gas supply line and wherein the first proportion of the circumferential face () amounts to at least 0.1% and at most 50%. Further, a corresponding adapter sleeve and a corresponding printing forme cylinder are provided.

Cylinder having a partially gas-permeable surface

The use of polymers obtainable by free-radical polymerization of

Formulations of hair cosmetics

The invention relates to a method for producing laser-engravable flexographic printing elements on flexible metallic supports comprising a cross-linked elastomeric layer and an absorber for laser radiation. The invention also relates to a method for producing flexographic printing plates by means of laser engraving using flexographic printing elements of the aforementioned type, and to flexographic printing plates produced using such a method.

Method for producing laser-engravable flexographic printing elements on flexible metallic supports

Graft copolymers are used for the production of laser-engravable relief printing plates, the graft copolymers being obtained by free radical polymerization of vinyl esters in the presence of polyalkylene oxides and subsequent hydrolysis of the ester function. Processes for the production of transparent flexographic printing plates by means of laser engraving using said graft copolymers are described.

Use of graft copolymers for the production of laser-engravable relief printing elements

APPLICATION OF WATER-SOLUBLE OR WATER-DISPERSIBLE POLYMERIZATES WHICH CONTAIN POLY-ETHER AND WHICH ARE USED AS A COATING AGENT, A BINDING AGENT AND/OR AS A FILM-FORMING AUXILIARY AGENT IN PHARMACEUTICAL FORMS OF ADMINISTRATION

Photosensitive printing element for preparing flexographic printing plates via computer-to-plate technology with a support, a photopolymerizable layer and an IR-ablatable layer substantially opaque to actinic radiation which comprises at least one heat-combustible polymeric binder, at least one IR-absorbing material and at least one aliphatic diester, and a process for making a flexographic printing plate using such an element.

Flexographic printing element comprising an IR-ablatable layer with improved sensitivity

Process for functionalizing a water-soluble or water-dispersible polymeric organic binder, in which unmodified, water-soluble or water-dispersible polymeric organic binders are reacted with one or more polar aprotic swelling agents which are compatible with the binder, with thorough mixing with one or more compounds which have groups capable of free radical polymerization, compositions obtainable thereby and radiation-sensitive mixtures which contain, as essential components, the above composition, at least one photopolymerization initiator, if required one or more ethylenically unsaturated, photopolymerizable low molecular weight compounds which are compatible with the polymeric binder and further conventional additives and/or assistants, and radiation-sensitive letterpress or relief printing plates which can be produced therefrom.

Preparation of crosslinkable water-soluble or water-dispersible compositions and radiation-sensitive mixtures obtainable therefrom

A multilayer element comprising a substrate, an intermediate layer and a photopolymerizable or photocrosslinkable layer in the stated order is used for producing printing or relief plates. The intermediate layer contains a copolymer of a monomer (A) of the formula (I) or (II) and a copolymerizable monomer (B) ##STR1## where R.sup.1 is vinyl, propen-2-yl, 1-buten-2-yl or styryl or a radical R.sup.2 --O--CO--CH.dbd.CH--, R.sup.2 is an alkyl, aryl, aralkyl or cycloalkyl radical of up to 10 carbon atoms, R.sup.3 is H, methyl or ethyl and n is from zero to 5. The intermediate layer in the multilayer element has improved adhesion in the laminate. It is initially nontacky and does not become tacky until after the application of the photopolymerizable layer, as a result of the interaction with said layer. The improved adhesion in the laminate is retained even after storage and repeated use of the finished printing plates.

Multilayer element for producing printing or relief plates

A multilayer recording element is suitable for the production of flexographic printing plates by digital information transfer and has, arranged one on top of the other on a dimensionally stable substrate, a layer (A) crosslinkable by actinic radiation, a layer (B) sensitive to IR radiation and, if required, a peelable cover sheet, the layer (A) crosslinkable by actinic radiation being capable of being washed out by means of a developer after imagewise exposure and consisting essentially of a mixture of at least one elastomeric binder, ethylenically unsaturated copolymerizable organic compounds, a photoinitiator and, if required, further assistants, and the layer (B) sensitive to IR radiation being a layer which is soluble or dispersible in the developer and contains, in a film-forming binder having elastomeric character, at least one finely divided substance which has a high absorbance in the wavelength range from 750 to 20,000 nm.

Multilayer recording element suitable for the production of flexographic

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Oberkirch-Nußbach, Germany

Alfred Leinenbach