Abstract: Polymerizable resin compositions and methods are provided for preparing shaped parts such as dental prosthetic devices and non-prosthetic dental appliances. The compositions are amenable to 3D printing and the polymerized compositions are capable of exhibiting improved strength properties, increased toughness, and good flexibility.

Abstract: A quaternary ammonium salt comprising a chromophore constituent, a tertiary amine cation constituent connected to the para-position of the chromophore constituent via a methylene linkage, and a borate anion constituent, wherein chromophore constituent is a 3-ketocoumarin constituent or a benzophenone constituent. Also, a photobase-redox initiating system comprising the quaternary ammonium salt and a peroxide.

Abstract: A photoinitiated polymerizable composition for 3D printing, the polymerizable composition comprising a nanogel component that comprises nanogel particles, wherein the nanogel particles comprise a copolymer with polymerizable reactive groups suitable for reacting with each other or a reactive diluent monomer, a reactive oligomer, a resin, or a combination thereof that is present in the polymerizable composition upon photoinitiation, wherein the nanogel component has a glass transition temperature that is in a range of about ?50 C and about 20 C and an average molecular weight that is in a range of about 10 kg/mol and about 100 kg/mol, and wherein the nanoparticles have an average hydrodynamic radius that is in a range of 1 nm to about 5 nm.

Abstract: In one aspect, the disclosure relates to compositions comprising semicrystalline, linear photopolymers that possesses extraordinary mechanical properties for application in 3D printing. The photopolymers are rapidly fabricated using low viscosity liquids at ambient conditions.

Abstract: A quaternary ammonium salt comprising a chromophore constituent, a tertiary amine cation constituent connected to the para-position of the chromophore constituent via a methylene linkage, and a borate anion constituent, wherein chromophore constituent is a 3-ketocoumarin constituent or a benzophenone constituent. Also, a photobase-redox initiating system comprising the quaternary ammonium salt and a peroxide.

Abstract: A method of increasing a polymerization reaction rate of a base monomer composition that has slow free-radical polymerization kinetics. The method comprises combining an effective amount of a nanogel to the base monomer composition to form a monomer-nanogel mixture having a polymerization reaction rate that is greater than the polymerization reaction rate of the base monomer composition when subjected to an identical free-radical polymerization reaction conducted under identical conditions. The base monomer composition comprises one or more slow-kinetic monomers with slow free radical polymerization kinetics in which <25% of the double bonds are converted within the first 10 mintes of said reaction. The nanogel is soluble in the base monomer composition. The nanogel is derived from a nanogel-forming monomer mixture that comprises: at least one monovinyl monomer; at least one divinyl monomer; a chain transfer agent; and an initiator.

Abstract: The disclosure relates to multilayer polymeric matrix based medical devices. In one example, a device comprises an inner first polymeric matrix and an outer second polymeric matrix. The addition of second polymeric matrix modifies bulk properties of each matrix thus resulting in a device where specific bulk properties are incorporated. The disclosure also relates to methods of manufacturing various embodiments of medical devices and their uses.

Abstract: The present invention relates to preparation and use of water dispersible nanogels and solvent dispersible reactive nanogels as additives to enhance polymer properties or as precursors to polymeric networks.

Abstract: A photoinitiated polymerizable composition for 3D printing, the polymerizable composition comprising a nanogel component that comprises nanogel particles, wherein the nanogel particles comprise a copolymer with polymerizable reactive groups suitable for reacting with each other or a reactive diluent monomer, a reactive oligomer, a resin, or a combination thereof that is present in the polymerizable composition upon photoinitiation, wherein the nanogel component has a glass transition temperature that is in a range of about ?50 C and about 20 C and an average molecular weight that is in a range of about 10 kg/mol and about 100 kg/mol, and wherein the nanoparticles have an average hydrodynamic radius that is in a range of 1 nm to about 5 nm.

Abstract: A method of increasing a polymerization reaction rate of a base monomer composition that has slow free-radical polymerization kinetics. The method comprises combining an effective amount of a nanogel to the base monomer composition to form a monomer-nanogel mixture having a polymerization reaction rate that is greater than the polymerization reaction rate of the base monomer composition when subjected to an identical free-radical polymerization reaction conducted under identical conditions. The base monomer composition comprises one or more slow-kinetic monomers with slow free radical polymerization kinetics in which <25% of the double bonds are converted within the first 10 mintes of said reaction. The nanogel is soluble in the base monomer composition. The nanogel is derived from a nanogel-forming monomer mixture that comprises: at least one monovinyl monomer; at least one divinyl monomer; a chain transfer agent; and an initiator.

Abstract: The present invention relates to preparation and use of water dispersible nanogels and solvent dispersible reactive nanogels as additives to enhance polymer properties or as precursors to polymeric networks.

Abstract: The present invention relates to preparation and use of water dispersible nanogels and solvent dispersible reactive nanogels as additives to enhance polymer properties or as precursors to polymeric networks.

Abstract: The disclosure relates to multilayer polymeric matrix based medical devices. In one example, a device comprises an inner first polymeric matrix and an outer second polymeric matrix. The addition of second polymeric matrix modifies bulk properties of each matrix thus resulting in a device where specific bulk properties are incorporated. The disclosure also relates to methods of manufacturing various embodiments of medical devices and their uses.

Abstract: The present invention relates to a dental polymer composition, in particular to a polymerizable resin composition combining comonomers capable of intermolecular hydrogen bonding with one or more hydrophobic comonomers. Polymers employing the present resin system exhibit high mechanical strength properties that are retained in the presence of water.

Abstract: The present invention provides soluble nanogel polymers produced by polymerization of a monomer mixture comprising a monovinyl monomer, multivinyl monomer, and an iniferter. The disclosure also provides a reactive nanogel with pendant reactive groups such as oxirane or (meth)acrylate groups.

Abstract: The present invention relates to a dental polymer composition, in particular to a polymerizable resin composition combining comonomers capable of intermolecular hydrogen bonding with one or more hydrophobic comonomers. Polymers employing the present resin system exhibit high mechanical strength properties that are retained in the presence of water.

Abstract: The present invention relates to preparation and use of water dispersible nanogels and solvent dispersible reactive nanogels as additives to enhance polymer properties or as precursors to polymeric networks.

Abstract: Optimized methods to achieve extensive dark curing from a three-component visible light-initiated system though controlled radical polymerization and compositions useful in these optimized methods are provided. These compositions and methods are particularly suited for use in certain dental applications.

Abstract: The present invention provides polymerizable dental compositions comprising a dimer acid-derived monomer such as a dimer acid-derived di(meth)acrylate monomer.

Abstract: Optimized methods to achieve extensive dark curing from a three-component visible light-initiated system though controlled radical polymerization and compositions useful in these optimized methods are provided. These compositions and methods are particularly suited for use in certain dental applications.