Abstract: The present invention relates to a phosphine oxide-based photoinitiator, to a process for preparing said photoinitiator and to a precursor that may be used to prepare said photoinitiator. The present invention further relates to a photoinitiator composition, to a curable composition, to a process for the preparation of a cured product, to a process of inkjet printing, to a process of 3D printing and to a process for coating a nail. The invention also relates to precursors of the photoinitiator or the photoinitiator composition. The invention also relates to the use of the photoinitiator or the photoinitiator composition.

Abstract: A curable urethane (meth)acrylate oligomer is formed by reacting, in the presence of a catalyst, at least the following: (A) a first isocyanate reactive component bearing at least one (meth)acrylate group and at least one isocyanate reactive groups; (B) a polyisocyanate component; and (C) a second isocyanate reactive component bearing at least one acidic group and two isocyanate reactive groups, wherein the urethane (meth)acrylate oligomer has an acid content of at least 5×10?4 mol acid/g oligomer, with some of the acid groups optionally neutralized. A cured ink or coating made from the oligomer, along with at least one of a (meth)acrylate monomer or a (meth)acrylate oligomer and, optionally, at least one additive, can be easily removed from the substrate by treatment with aqueous base, thus allowing for recycling the substrate cleaned of any ink or coating. Nail gel compositions including the oligomer can also be more easily removed from nails.

Abstract: The present invention relates to a curable composition comprising an oligomer and a low viscosity reactive diluent. The oligomer comprises polymerized high Tg monomer units, polymerized low Tg monomer units, polymerized chromophore monomer units, and optionally at least one polymerized additional monomer unit. The invention also relates to use of the curable composition as a pressure sensitive adhesive curable composition and methods of coating a substrate.

Abstract: The present invention relates to a curable composition comprising an ethylenically unsaturated compound and a specific photoinitiator having dual initiation mechanisms. The invention also relates to a process for the preparation of a cured product, in particular a 3D-printed article, with this composition and to the use of this composition for obtaining an ink, a coating, a sealant, an adhesive, a molded article or a 3D-printed article. The invention further pertains to the use of a specific phosphine oxide photoinitiator in a 3D printing composition or 3D printing process.

Abstract: The present invention relates to a curable composition comprising an ethylenically unsaturated compound and a specific photoinitiator having dual initiation mechanisms. The invention also relates to a process for the preparation of a cured product, in particular a 3D-printed article, with this composition and to the use of this composition for obtaining an ink, a coating, a sealant, an adhesive, a molded article or a 3D-printed article. The invention further pertains to the use of a specific phosphine oxide photoinitiator in a 3D printing composition or 3D printing process.

Abstract: Photocurable compositions which include a). at least one (meth)acrylate-functionalized monomer; b). at least one (meth)acrylate-functionalized oligomer; c). particles of at least one core/shell copolymer; and d). at least one photoinitiator are useful for forming durable, impact resistant coatings on nails.

Abstract: In one aspect, electrically conductive conjugated polymeric compositions are described herein demonstrating compatibility with aqueous solvents and/or phases. The ability to provide aqueous compatible compositions from previously water insoluble conjugated polymeric systems, in some embodiments, can facilitate use of such systems in a variety of aqueous applications, including biological applications.

Abstract: In one aspect, electrically conductive conjugated polymeric compositions are described herein demonstrating compatibility with aqueous solvents and/or phases. The ability to provide aqueous compatible compositions from previously water insoluble conjugated polymeric systems, in some embodiments, can facilitate use of such systems in a variety of aqueous applications, including biological applications.