Abstract: A method of preparing an article having an embossed micro- or nanostructured surface using an aqueous dispersion of a curable prepolymer, an article obtainable by the method and the use of the article.

Abstract: The present invention in general relates to acrylate end-capped urethane-based polymers, which are in particular characterized by the presence of at least 3 acrylate end-groups, thereby making them particularly suitable for further processing using multiple kinds of technologies such as 2-photon polymerization, stereolithography (SLA printing), electrospinning, film casting, porogen leaching, extrusion based 3D-printing, spray drying, cryogenic treatment, coatings, cross-linkable micelles, spincoating, and electrospraying.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane pre-polymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

Abstract: The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane pre-polymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

Abstract: The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane prepolymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

Abstract: The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane prepolymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

Abstract: The present invention concerns a hybrid polymer dispersion comprising a functionalized polyurethane polymer (A) and a functionalised vinyl polymer (B) either as individual particles or as composites particles wherein the polyurethane polymer is prepared in a high boiling point oxygenated coalescing solvent having no functional group reactive with isocyanates and that will remain after water dispersion.

Abstract: The invention relates to a process of forming an embossed coated substrate. The process comprises the steps of: (I) forming on a substrate at least one coating whose composition comprises a radiation-curable polyurethane dispersion, (II) embossing the coated substrate on a relief surface, (III) irradiating the embossed coated substrate to cure the polyurethane-containing coating. An application of the process is the manufacturing of caul paper.

Abstract: The invention relates to new radiation-curable composition comprising an aqueous dispersion containing an unsaturated polyurethane with repeating units of tetramethylxylylene diisocyanate as the essential diisocyanate compound. The invention also relates to a process for making these dispersions in the absence of solvents. The product and process can meat severe environmental requirements in terms of absence of solvents, absence of amines and absence of irritating materials. The coatings obtained from the dispersions of the invention have all together a good resistance combined with a good cold flexibility. In particular, the coatings are glossy and exhibit a high adhesion, a good chemical resistance to stain, water and solvent and a good mechanical resistance to scratch and abrasion.

Abstract: The invention relates to a water based polymer composition comprising a biopolymer and a synthetic polymer resin. The biopolymer results from a mechanical thermoplastic processing of a polysaccharide and/or protein starting material using shear forces in the presence of a crosslinking agent. The synthetic polymer resin consists of a water based hydrophilic resin and/or hydrophilic/hydrophobic resin. These compositions have a good storage stability. They are intended for the production of coatings with fair properties.

Abstract: The invention relates to an aqueous ink composition containing a polyurethane polymer and at least one colorant, wherein the colorant is covalently bonded to the polyurethane polymer, and the composition is crosslinkable to form a network containing the polyurethane polymer, wherein the crosslinking reaction is initiated by UV-irradiation or electron beam.

Abstract: Claimed is a non-porous, waterproof film having a water vapor permeability of at least 1000 g/m2 day, based on a thermoplastic polyurethane, wherein the polyurethane is composed of a) 40 to 52 wt. % of polyether glycol having an atomic ratio of carbon to oxygen in the range of 2,0 to 4,3, with at least 30 wt. % of the polyurethane being composed of a polyether glycol having an atomic ratio of carbon to oxygen in the range of 2,0 to 2,4, b) 30 to 45 wt. % of polyisocyanate, calculated as 4,4′-diphenyl methane diisocyanate, c) 0,5 to 10 wt. % of araliphatic diol, and d) 5 to 20 wt. % of low-molecular weight chain extender, calculated as 1,4-butane diol, less the amount of araliphatic diol. Also claimed is the use of these films in rainwear, shoes, tents, seats, as mattress covers, as understating, in garments for medical purposes, and for the manufacture thereof of wound dressings.

Abstract: The invention relates to an aqueous ink composition containing a polyurethane polymer and at least one colorant, wherein the colorant is covalently bonded to the polyurethane polymer, and the composition is crosslinkable to form a network containing the polyurethane polymer.

Abstract: Aqueous selfcrosslinkable resin composition comprising an aqueous dispersion of at least one polyurethane polymer having anionic salt groups as sole chain-pendant functional group and at least one vinyl polymer having chain-pendant acetoacetoxyalkyl ester groups. A selfcrosslinking reaction between the polyurethane polymer and the vinyl polymer will take place during and/or after film formation, resulting in the formation of a polymeric film having properties not found to be those of the non-functional polymer components.