Basf Se Corporation

Juergen Kaczun

Reinhold Schwalm

Bernd Bruchmann

Frank Dietsche

Wolfgang Gaschler

Eva Wagner

Georg Degen

Eugene Valentine Sitzmann

Frank Kleine Jaeger

Stephan Hermes

Daniel Schoenfelder

Peter Thuery

Sebastian Berger

Robert Feuerhake

Fabian Seeler

David Trumbo

Markus Hickl

Sebastian Enck

Udo Lehmann

Steven Zijlstra

Martin Kaarup Bek

Leendert Berkhout

K Shaun Tranter

Frank Kleine Jeager

Linda Guitman

David Hajnal

Bernard Hendrik Reesink

A process for producing aqueous polymer dispersions and the use thereof as binder for coatings having high solvent stability and a low tendency to soiling.

Process for preparing an aqueous polymer dispersion having high chemical resistance

The present invention relates to polyurethanes (A) being obtainable by reaction of (a) 15% to 70% by weight of di- or polyisocyanate comprising on average from 1 to 10 allophanate groups and on average from 1 to 10 C&#x2014;C double bonds per molecule, and optionally (b) 0% to 60% by weight of further di- or polyisocyanate, with (c) 5% to 50% by weight of compounds having at least two isocyanate-reactive groups, comprising at least one polycarbonate diol with a molecular weight from 500 to 3000 g/mol weight % ages being based on total polyurethane (A), with the proviso that the total is 100%.

Polyurethanes, dispersions thereof, their preparation and use

The invention relates to low-viscosity formulations of radiation-curable compounds, to processes for preparing them, to their use, and to inks, printing-inks, and print varnishes that comprise them.

Radiation-curable compounds

The invention relates to a composition for printing electrodes on a substrate, comprising 30 to 90% by weight of electrically conductive particles, 0 to 7% by weight of glass frit, 0.1 to 5% by weight of at least one absorbent for laser radiation, 0 to 8% by weight of at least one matrix material, 0 to 8% by weight of at least one organometallic compound, 3 to 50% by weight of water as a solvent, 0 to 65% by weight of at least one retention aid and 0 to 5% by weight of at least one additive, based in each case on the total mass of the composition. The invention further relates to a use of the composition.

Composition for printing electrodes

The invention relates to a process for producing electrically conductive bonds between solar cells, in which an adhesive comprising electrically conductive particles is first transferred from a carrier to the substrate by irradiating the carrier with a laser, the adhesive transferred to the substrate is partly dried and/or cured to form an adhesive layer, in a further step the adhesive is bonded to an electrical connection, and finally the adhesive layer is cured. The invention further relates to an adhesive for performing the process, comprising 20 to 98% by weight of electrically conductive particles, 0.01 to 60% by weight of an organic binder component used as a matrix material, based in each case on the solids content of the adhesive, 0.005 to 20% by weight of absorbent based on the weight of the conductive particles in the adhesive, and 0 to 50% by weight of a dispersant and 1 to 20% by weight of solvent, based in each case on the total mass of the undried and uncured adhesive.

Process for producing electrically conductive bonds between solar cells

The invention relates to a method for printing a substrate () in a printing machine, in which ink is transferred from a flexible carrier () to the substrate () in accordance with a predefined pattern by energy being introduced into the ink through the flexible carrier () by a device for the introduction of energy, some of the ink evaporating in the area of action of the energy and, as a result, a drop of ink () being thrown onto the substrate () to be printed, this step being repeated at least once, ink being transferred at least partly to the substrate () at the same positions in order to intensify the pattern produced. The substrate is transported through the printing machine () during the printing and, after the transfer of ink in step (a), the device for the introduction of energy is controlled in such a way that, during the repetition in step (b), the ink is transferred at the same position again as in step (a). The invention further relates to a printing machine for implementing the method.

Printing machine and method for printing a substrate

In a method for printing substrates with a printing ink and/or a printing varnish at least comprising solvents and binders, at least one of the binders comprises a polyetheramine polyol.

Method for printing substrates

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Wachenheim, Germany

Juergen Kaczun