Abstract: An aqueous radiation curable composition containing at least one ethylenically unsaturated polyurethane (A) and at least one ethylenically unsaturated polyurethane (B), different from the polyurethane (A), said ethylenically unsaturated polyurethane (B) preferably being characterized by a molecular weight that is below 10,000 Daltons; and optionally, at least one ethylenically unsaturated compound (C) different from (A) and (B); wherein the radiation curable composition in dry form has a steady-state creep viscosity ?30, expressed as the apparent viscosity after a deformation time of 30 minutes with a load ?O=50 Pa at 23° C., that is above 1·103 Pa·s, more preferably above 1·104 Pa·s. The compositions are characterized by an improved creep viscosity ?30 and provide polymer materials with a good flow and mirror effect. In general, these materials are less sensitive to dust pick-up and fingerprints. Further provided is a one-vessel solvent free process for preparing such materials.

Abstract: The present invention relates to an aqueous radiation curable composition comprising: (I) at least one ethylenically unsaturated compound (A), and (II) at least one emulsifier (B) comprising alternating polyalkylene oxide segments, wherein said emulsifier optionally bears one or more groups selected from alkyl groups, aryl groups hydroxyl groups and/or ethylenically unsaturated groups, and wherein said emulsifier (B) has an HLB value of at least 4.5, preferably at least 7. The compositions of the invention are particularly suited for the manufacture of sprayable eco-friendly hardcoats, but they are also suitable for the making of inks, overprint varnishes and adhesives, alone or in combination with e.g. a water-borne polymer dispersion.

Abstract: Provided in the invention is an aqueous radiation curable composition (I) comprising: —at least one ethylenically unsaturated polyurethane (A) obtained from the reaction of at least one polyisocyanate compound (Ai); at least one ethylenically unsaturated compound (Aii) containing at least one reactive group capable to react with isocyanate groups; at least one hydrophilic compound (Aiii) containing at least one reactive group capable to react with isocyanate groups and at least one other group which is capable to render the polyurethane polymer dispersible in aqueous medium as such or after the formation of a salt; optionally, at least one polyol (Aiv); optionally, at least one further compound (Av) different from the polyol (Aiv) and comprising at least one reactive group capable to react with isocyanate groups; and optionally, at least one reactive electrophilic compound (Avi); said ethylenically unsaturated polyurethane (A) preferably being characterized by a molecular weight that is above 1,000 Daltons; —

Abstract: The present invention relates to a process for the preparation of dispersions of colloidal polymerized particles and to the colloidal polymerized particles obtained and/or obtainable by the process as well as to their use.

Abstract: The present invention relates to an aqueous radiation curable composition comprising: (I) at least one ethylenically unsaturated compound (A), and (II) at least one emulsifier (B) comprising alternating polyalkylene oxide segments, wherein said emulsifier optionally bears one or more groups selected from alkyl groups, aryl groups hydroxyl groups and/or ethylenically unsaturated groups, and wherein said emulsifier (B) has an HLB value of at least 4.5, preferably at least 7. The compositions of the invention are particularly suited for the manufacture of sprayable eco-friendly hardcoats, but they are also suitable for the making of inks, overprint varnishes and adhesives, alone or in combination with e.g. a water-borne polymer dispersion.

Abstract: The present invention relates to a radiation curable aqueous composition comprising at least one ethylenically unsaturated polymer (1) which is the reaction product of—a water-dispersible (meth)acrylic polymer A containing pendant hydroxyl or isocyanate groups, and containing pendant groups capable to render the polymer dispersible in aqueous medium either directly or after reaction with a neutralizing agent; —at least one ethylenically unsaturated compound B which can be radically polymerized under irradiation and which attaches to the (meth)acrylic polymer A by an urethane linkage; —and, optionally, at least one neutralizing agent C. The present invention further relates to the making and use of such radiation curable aqueous compositions.

Abstract: The present invention relates to a process for the preparation of dispersions of colloidal polymerized particles and to the colloidal polymerized particles obtained and/or obtainable by the process as well as to their use.

Abstract: The present invention relates to an aqueous radiation curable composition comprising: (I) at least one ethylenically unsaturated compound (A), and (II) at least one emulsifier (B) comprising alternating polyalkylene oxide segments, wherein said emulsifier optionally bears one or more groups selected from alkyl groups, aryl groups hydroxyl groups and/or ethylenically unsaturated groups, and wherein said emulsifier (B) has an HLB value of at least 4.5, preferably at least 7. The compositions of the invention are particularly suited for the manufacture of sprayable eco-friendly hardcoats, but they are also suitable for the making of inks, overprint varnishes and adhesives, alone or in combination with e.g. a water-borne polymer dispersion.

Abstract: The present invention relates to a radiation curable aqueous composition comprising at least one ethylenically unsaturated polymer (1) which is the reaction product of a water-dispersible (meth)acrylic polymer A containing pendant hydroxyl or isocyanate groups, and containing pendant groups capable to render the polymer dispersible in aqueous medium either directly or after reaction with a neutralizing agent; at least one ethylenically unsaturated compound B which can be radically polymerized under irradiation and which attaches to the (meth)acrylic polymer A by an urethane linkage; and, optionally, at least one neutralizing agent C. The present invention further relates to the making and use of such radiation curable aqueous compositions.