Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Joerg Buechner

Dirk Achten

Hans-Josef Laas

Heinz Pudleiner

Klaus Meyer

Martin Melchiors

Harald Kraus

Thomas Buesgen

Wolfgang Arndt

Thomas Fait

Christoph Thiebes

Nicolas Degiorgio

Jonas Kuenzel

Joerg Tillack

Fabian Schuster

Oliver Kirstein

Michael Ludewig

Bettina Mettmann

Evgeny Avtomonov

Mehmet-Cengiz Yesildag

Rainer Trinks

Ting Liu

Thomas Faecke

Ralf Rott

The present disclosure relates to an aqueous dispersion containing at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate. The melting temperature of the semicrystalline polyurethane-polyurea polymer is at least 55° C. The disclosure also relates to a process for preparing the aqueous dispersion, the use of the aqueous dispersion for producing coated substrates or adhesive films, flat or three-dimensional substrates coated with the aqueous dispersion, a substrate coated with at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate, an adhesive film including at least one semicrystalline polyurethane-polyurea polymer and at least one surface-deactivated polyisocyanate, and a dried adhesive film obtained from such an aqueous dispersion.

Adhesives

The invention relates to the use of a separating medium, containing at least one essential oil or consisting of at least one essential oil, selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating at least two joining parts which are joined by means of an adhesive bond.

Use of essential oils for separating adhesive bonds

The invention relates to the use of mixtures of water and essential oils selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating multilayered composites for the segregated recycling of polymer/metal films.

Use of mixtures of water and essential oil for separating multilayered composites for the segregated recycling of polymer/metal films

The invention relates to a method for producing a three-dimensional object by means of a powder-based additive production method from at least one first powdery material, wherein the at least one first powdery material comprises at least one first compound having a first reactive group a). The first reactive group a) is selected from the group consisting of an isocyanate group, a blocked isocyanate group, or a mixture thereof. The invention further relates to a component produced using the method according to the invention, and to powdery material that is suited for the method according to the invention.

Method for producing products by means of additive manufacturing methods using reactive powders, and products thereof

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: wherein the filament, during the application process, has an application temperature of &#x2265;100&#xb0; C. above the melting point of the fusible polymer for &#x2264;20 minutes. There are still free NCO groups in the material including the fusible polymer.

Method for applying a material containing a meltable polymer with free NCO groups

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: There are furthermore blocked NCO groups present in the material comprising the fusible polymer.

Method for applying a material containing a meltable polymer with blocked NCO groups

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

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Bergisch Gladbach, Germany

Joerg Buechner