摘要:
The present invention relates to a powder coating composition comprising: a. at least one component (A) comprising thermo-reversible (S-S) bonds and functional groups capable of reacting with an amorphous polymer binder (B) and/or at least one component (a1) comprising thermo-reversible (S-S) bonds and at least one component (a2) capable of reacting with (a1) to form component (A), b. at least one amorphous polymer binder (B) with a Tg > 30 °C comprising functional groups capable of reacting with the functional groups of component (A) and c. at least one (semi)crystalline component (C), preferably a polymer, with a melting point above or equal to 40 °C with functional groups capable of reacting with the functional groups of component (A) and/or the functional groups of the amorphous polymer binder (B).
摘要:
Coating material (237) being processable by non-impact printing to form at least a part of a coating layer (206) respresenting an image; the coating material (237) comprising an amorphous resin portion and being curable; the coating material (237) being configured for being applied with a thickness of at least 15 µm; wherein preferably the coating material (237) is configured for being applied with a thickness of at least 20 µm, in particular with a thickness of at least 30 µm, further in particular with a thickness of at least 40 µm.
摘要:
A coating layer application device (200) for applying a coating layer, which is located on a transfer element, to a substrate, the coating layer (206) being formed from a coating material, in particular a thermosetting coating material, the coating layer (206) being curable and comprising an amorphous material, the coating layer application device comprising: a heating device (214, 220) being configured so as to (i) maintain the temperature of the coating layer (206) within a temperature range before removal of the transfer element (204) from the coating layer (206), wherein within the temperature range the uncured coating material is in its supercooled liquid state and/or in its glassy state; and/or (ii) partially cure the coating layer (206) during a contact of the coating layer (206) and the substrate (210) and before removal of the transfer element (204) from the coating layer, in particular by increasing the temperature of the coating layer (206) to a temperature at or above a curing temperature of the coating layer (206).
摘要:
The present invention relates to the use of a thermosetting polymeric powder composition in a 3D printing process to produce a 3D duroplast, wherein the composition comprises at least one curable polymeric binder material and at least one thermoplast having a Tg and/or Mp below the temperature provided in a pass of the printing process and wherein during each pass of the printing process said polymeric binder material is at least partially cured within the layer thus formed and also at least partially crosslinked with the previous layer. The invention furthermore relates to a 3D printing process using such a thermosetting polymeric powder composition and a 3D-printing product obtained when using such a thermosetting polymeric powder composition.
摘要:
The present invention relates to a radiation curable ink, wherein the polar portion of the surface tension is equal to or greater than 5%, preferably 10%, of the total surface tension, and the total surface tension is between 25 and 31 mN/m.
摘要:
Die vorliegende Erfindung betrifft eine Pulverlackformulierung umfassend mindestens einen teilkristallinen thermoplastischen ungesättigten Polyester (A), zumindest ein mit diesem Polyester copolymerisierbares thermoplastisches Allyl-Präpolymer (B) und ein thermisches Initiationssystem (C) bestehend aus mindestens einem thermischen Initiator, wobei das Allyl-Präpolymer (B) ein Massenmittel der Molmasse von größer 5000 g/mol, bevorzugt von größer 10000 g/mol und besonders bevorzugt von größer 20000 g/mol aufweist und/oder eine Viskosität von 30 Pas und 200 Pas, bevorzugt zwischen 40 Pas und 170 Pas, besonders bevorzugt zwischen 50 Pas und 150 Pas.
摘要:
The invention relates to thermosetting powder paint compositions based on carboxyl group-containing polyester resins as well as polyepoxides and/or ß-hydroxyalkylamides serving as curing agents. The polyester resins have an acid number ranging from 10 to 100 and a hydroxyl number no greater than 15 mg KOH/g polyester resin and comprise at least 50 mol %, with regard to all of the contained dicarboxylic acids, of units of isophthalic acid and up to at least 50 mol %, with regard to all of the contained diols, of units of neopentyl glycol and contain no more than 10 mol %, with regard to all of the dicarboxylic acids and diols, of monomers having a functionality of 3 or higher. By adding 0.05 to 5 % by weight of a heterocyclic polycarboxylic acid to the powder paint raw batch, preferably by melting this acid into the polyester resin used for producing the powder paint after the powder paint is produced, it is possible to obtain highly weather-proof powder coatings having an excellent mechanical level and surface aspect.