Bayer Materialscience Ag

Covestro Deutschland Ag

Allnex IP S.a.r.l.

Bayer Aktiengesellschaft

Allnex Netherlands B.v.

Bayer Intellectual Property Gmbh

Stratasys, Inc.

Michael Ludewig

Wolfgang Fischer

Dirk Achten

Friedrich-Karl Bruder

Hans-Josef Laas

Jan Weikard

Jörg Hofmann

Thomas Fäcke

Mathias Matner

Roland Wagner

Walter Meckel

Klaus Lorenz

Christoph Tomczyk

Thomas Büsgen

Stefan Sommer

Jörg Tillack

Helmut Kuczewski

Michael Mager

Nusret Yuva

Wilfried Haese

Martin Melchiors

Rafael Oser

Joachim Petzoldt

Thomas Buesgen

Sigurd Buchholz

Stefan Groth

Rolf Bachmann

Jörg Büchner

Matthias Wintermantel

Michael Grahl

Gerhard Ruttmann

Florian Johannes Stempfle

Burkhard Fugmann

Evgeny Avtomonov

Christoph G&uuml;rtler

Detlef-Ingo Sch&uuml;tze

Joerg Buechner

Pantea Nazaran

Paul Heinz

Sebastian Doerr

Ursula Tracht

Frank Kobelka

Melita Dietze

Nicolas Stöckel

Björn Henninger

Richard Meisenheimer

Maria Almato Guiteras

Jürgen Lippemeier

Raymond Wong

Ice Zhang

Nicolas Stoeckel

Ingo Gipperich

Eva Tejada

Holger Breuer

Claudia Willems

Maria Almato

Alisa Kayser

Arnaud Guedou

Eva Tejada Rosales

Petra Janssen

Axel Schmidt

Christoph Eggert

A method for producing an article in which a layer with a radically cross-linkable resin is selectively crosslinked at least partially. This takes place according to a selected cross section of the article to be formed by means of selective application of a radical initiator. The at least partially crosslinked material is added on layer by layer to a carrier or to previous layers bonded to the carrier. A system that is suitable for carrying out the method according to the invention has a substrate, a control unit, an application unit for applying the resin to the substrate, an application unit for applying an initiator to the resin, an energy exposure unit and a contacting unit.

Method for producing an article by layer-by-layer buildup with separately patterned resin and initiator wherein the resin has a storage modulus greater than loss modulus at 20 C

The present invention relates to polymerizable compositions which contain components that can be crosslinked both via isocyanurate bonds and by a radical reaction mechanism. The invention further relates to methods by way of which polymers can be produced from said compositions.

Dual-curing isocyanurate polymers

A process for producing an object from a precursor comprises the steps of: I) depositing a free-radically crosslinked resin atop a carrier to obtain a ply of a construction material joined to the carrier which corresponds to a first selected cross section of the precursor; II) depositing a free-radically crosslinked resin atop a previously applied ply of the construction material to obtain a further ply of the construction material which corresponds to a further selected cross section of the precursor and which is joined to the previously applied ply; III) repeating step II) until the precursor is formed; IV) treating the precursor obtained after step III) under conditions sufficient to at least partially trimerize to isocyanurate groups NCO groups present in the free-radically crosslinked resin of the obtained precursor to obtain the object.

Method for producing an object from a precursor, and use of a radically crosslinkable resin in an additive production method

The present invention relates to a process for producing (cyclo)aliphatic polycarbonate polyols comprising the steps of

Process for producing (cyclo)aliphatic polycarbonate polyols having low reactivity

A process for manufacturing an object involves the steps of: I) depositing a radically cross-linked resin on a carrier so that a layer of a structuring material joined to the carrier is obtained, said layer corresponding to a first selected cross-section of the object; II) depositing a radically cross-linked resin on a previously applied layer of the structuring material so that an additional layer of the structuring material is obtained which corresponds to a further selected cross-section of the object and which is joined to the previously applied layer; III) repeating step II) until the object is formed, wherein the deposition of a radically cross-linked resin in steps I) and II) includes the application of a radically cross-linkable resin to the carrier or the previously applied layer and is performed at least in step II) by applying energy to a selected region of a radically cross-linkable resin, corresponding to the selected cross-section of the object, the radically cross-linkable resin having a viscosity (23&#xb0; C., DIN EN ISO 2884-1) of &#x2265;5 mPas to &#x2264;100,000 mPas. The invention further relates to the use of such a resin in an additive manufacturing process. The radically cross-linkable resin comprises a curable component which is obtained by reacting a polyisocyanate or a polyisocyanate descendant containing at least one oxadiazine trione group (formula I) with a compound that contains acrylate, methacrylate or vinyl ether double bonds and 25 Zerewitinoff active H atoms.

Process for manufacturing an object, and use of a radically cross-linkable resin in an additive manufacturing process

The invention relates to storage-stable aqueous dispersions of hydrophilically modified polycarbodiimide resins, a method for producing same, and the use of a salt component to reduce carbodiimide hydrolysis in aqueous polycarbodiimide dispersions.

Aqueous polycarbodiimide dispersion with improved storage stability, and method for producing same

The present invention relates to hydrophilized polyurethanes having a particularly high content of hydroxy-functional, unsaturated triglycerides, to a process for preparing polyurethane dispersions based thereon, to the use of the dispersions as binders in oxidatively drying coating materials having particularly high chemical resistance, and to articles and substrates coated with these coating materials.

Oxidatively drying polyurethane dispersions with particularly high chemical resistance

A process for producing an object from a precursor comprises the steps of: depositing a free-radically crosslinked resin atop a carrier to obtain a ply of a construction material joined to the carrier which corresponds to a first selected cross section of the precursor; depositing a free-radically crosslinked resin atop a previously applied ply of the construction material to obtain a further ply of the construction material which corresponds to a further selected cross section of the precursor and which is joined to the previously applied ply; repeating step II) until the precursor is formed; wherein the depositing of a free-radically crosslinked resin at least in step II) is effected by exposure and/or irradiation of a selected region of a free-radically crosslinkable resin corresponding to the respectively selected cross section of the object and wherein the free-radically crosslinkable resin has a viscosity (23&#xb0; C., DIN EN ISO 2884-1) of &#x2265;5 mPas to &#x2264;100000 mPas. In the process the free-radically crosslinkable resin comprises a curable component in which NCO groups and olefinic C&#x2550;C double bonds are present, wherein in the curable component the molar ratio of NCO groups to olefinic C&#x2550;C double bonds is in a range from &#x2265;1:5 to &#x2264;5:1.

Process for producing an object from a precursor and use of a free-radically crosslinkable resin in an additive manufacturing process

The present invention provides a process for preparing radiation-curing allophanates having residual monomer contents of less than 0.5% by weight and an NCO content of less than 1% by weight, wherein (A) compounds containing isocyanate groups, (B) hydroxy-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups) and (C) optionally further compounds containing NCO-reactive groups, also optionally in the presence of a catalyst, are used to form NCO-group-containing urethanes having radiation-curing groups, which are subsequently reacted, without further addition of compounds containing isocyanate groups, in the presence of an allophanatization catalyst, the ratio of NCO groups of the compounds from A) to the OH groups of the compounds from B) and, where used, C) being 1.45:1.0 to 1.1:1.0.

Process for preparing low-viscosity allophanates containing actinically curable groups

The present invention relates to a process for the preparation of highly reactive, low-viscosity and water-dilutable polyisocyanate reaction products which contain activated groups which react, by polymerization, with ethylenically unsaturated compounds under the action of actinic radiation. The present invention furthermore relates to a process for the preparation of such products and their use.

Process for the preparation of low-viscosity, water-dilutable urethane (meth)acrylates

The present invention provides novel polyurethane-based wound dressing foams, obtained by foaming and curing silane-terminated polyurethanes.

Production of polyurethane foams for wound management

The present invention relates to a process for the preparation of low-viscosity polyisocyanate reaction products which contain allophanate groups, can be readily emulsified in water and contain activated groups which react, by polymerization, with ethylenically unsaturated compounds under the action of actinic radiation. The present invention furthermore relates to the products which can be prepared by the process according to the invention and their use.

Process for the preparation of low-viscosity, water-emulsifiable allophanates with radiation-curable groups

The present invention relates to a process for the preparation of particularly reactive and low-viscosity reaction products of polyisocyanates which contain activated ethylenically unsaturated groups which react by polymerization under the action of actinic radiation, and the use of these reaction products in coating compositions, and particularly scratch-resistant coatings obtainable therefrom.

Process for the preparation of particularly reactive and low-viscosity allophanates having actinic-curable groups and the use thereof for the preparation of particularly scratch-resistant coatings

Growing community of inventors

Odenthal, Germany

Michael Ludewig