A photopolymerizable composition comprises at least a polymerizable resin, a photosensitizer, an annihilator, and a photoinitiator. The photosensitizer is formulated to absorb an excitation light signal received in a first range of wavelengths. The annihilator is formulated to emit a light signal in a second range of wavelengths different from the first. During the absorption of light by the photosensitizer in the first range of wavelengths, the annihilator emits a light signal in the second range, a photon energy of the emitted light signal being greater than a photon energy of the light signal received by the photosensitizer. The annihilator is also formulated to implement an energy transfer mechanism to excite the photoinitiator for polymerization of the resin. The excited photoinitiator is formulated to generate at least one polymerizable initiator to cause the polymerization reaction. Related methods, such as three-dimensional printing methods, and materials are also disclosed.

A dual-cure method for forming a solid polymeric structure is provided. An end-capped, imide-terminated prepolymer is combined with at least one photopolymerisable olefinic monomer, at least one photoinitiator, and a diamine, to form a curable resin composition, which, in a first step, is irradiated under conditions effective to polymerize the at least one olefinic monomer, thus forming a scaffold composed of the prepolymer and the polyolefin with the diamine trapped therein. The irradiated composition is then thermally treated at a temperature effective to cause a transimidization reaction to occur between the prepolymer and the diamine, thereby releasing the end caps of the prepolymer and providing the solid polymeric structure. A curable resin composition comprising an end-capped, imide-terminated prepolymer, at least one photopolymerisable olefinic monomer, at least one photoinitiator, and a diamine, is also provided, as are related methods of use.

The disclosure relates to systems, methods and compositions for fabricating additive manufactured electronics having conductive and dielectric constituents comprising voids, using additive manufacturing. Specifically, the disclosure is directed to the fabrication of three-dimensional component having conductive and dielectric constituents comprising voids by using water soluble support ink, capable of undergoing all processing steps for fabricating the dielectric and conductive constituents.

The disclosure relates to systems, methods and compositions for fabricating additive manufactured electronics having conductive and dielectric constituents comprising voids, using additive manufacturing. Specifically, the disclosure is directed to the fabrication of three-dimensional component having conductive and dielectric constituents comprising voids by using water soluble support ink, capable of undergoing all processing steps for fabricating the dielectric and conductive constituents.

The present disclosure discloses an optical ink matrix comprising a UV polymerizable monomer, at least a first multifunctional monomer. The optical ink matrix may further comprise a second multifunctional monomer. The present disclosure further discloses a method of manufacturing non-axially symmetric GRIN lens using 3D printing.

The present disclosure discloses an optical ink matrix comprising a UV polymerizable monomer, at least a first multifunctional monomer. The optical ink matrix may further comprise a second multifunctional monomer. The present disclosure further discloses a method of manufacturing non-axially symmetric GRIN lens using 3D printing.

A radiation-curable ink jet composition includes a multifunctional monomer and a vinyl methyl oxazolidinone. The content of the multifunctional monomer is 5 to 50 mass % based on the total amount of the radiation-curable ink jet composition.

A radiation-curable ink jet composition includes a multifunctional monomer and a vinyl methyl oxazolidinone. The content of the multifunctional monomer is 5 to 50 mass % based on the total amount of the radiation-curable ink jet composition.

In accordance with some embodiment of the present invention, a liquid composition set is provided. The liquid composition set includes a first liquid composition and a second liquid composition. The first liquid composition comprises: a compound represented by general formula (1): ##STR00001##
where X and Y each independently represent a functional group, and at least one of X and Y represents an electron-withdrawing functional group; and an acidic substance. The second liquid composition comprises a compound having vinyl group or acryloyl group.

An active energy ray curable composition contains an allophanate-bond-containing compound having an activatable group at exposure to active energy rays and a polyester resin having a polymerizable unsaturated bond.