An inkjet ink composition for 3D printing is disclosed herein. In some embodiments, the ink composition includes at least one radical curable compound selected from the group consisting of an acrylate-based monomer, an acrylate-based oligomer, and a vinyl-based monomer, and a light initiator, wherein the ink composition has dimensional precision an evaluation index of dimensional precision of 90% or more. The ink composition can implement a shape of a target sculpture more accurately by significantly reducing the flow of ink after a 3D printing process.

An inkjet ink composition for 3D printing is disclosed herein. In some embodiments, the ink composition includes at least one radical curable compound selected from the group consisting of an acrylate-based monomer, an acrylate-based oligomer, and a vinyl-based monomer, and a light initiator, wherein the ink composition has dimensional precision an evaluation index of dimensional precision of 90% or more. The ink composition can implement a shape of a target sculpture more accurately by significantly reducing the flow of ink after a 3D printing process.

A UV-curable composition for coating or printing on a substrate and/or a substrate surface includes at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted monocycloaliphatic hydrocarbon radical, at least one vinyl monomer having a substituted or unsubstituted heterocyclic radical, where the heterocyclic radical has at least one ring-forming nitrogen atom, at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted bicyclic, nonaromatic hydrocarbon radical and at least one photoinitiator, wherein the UV-curable composition is free of at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted heterocyclic, nonaromatic radical.

A UV-curable composition for coating or printing on a substrate and/or a substrate surface includes at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted monocycloaliphatic hydrocarbon radical, at least one vinyl monomer having a substituted or unsubstituted heterocyclic radical, where the heterocyclic radical has at least one ring-forming nitrogen atom, at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted bicyclic, nonaromatic hydrocarbon radical and at least one photoinitiator, wherein the UV-curable composition is free of at least one monofunctional acrylate monomer/methacrylate monomer having a substituted or unsubstituted heterocyclic, nonaromatic radical.

An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.

An example of a fusing agent includes a tetraphenyldiamine-based dye, alkyldiphenyloxide disulfonate, 1-methyl-2-pyrrolidone, and a balance of water. The fusing agent excludes a strong reducing species. The fusing agent may be incorporated into a three-dimensional printing method or a three-dimensional printing system. In an example of the three-dimensional printing method, a polymeric or polymeric composite build material is applied. The fusing agent is selectively applied on at least a portion of the polymeric or polymeric composite build material. The polymeric or polymeric composite build material is exposed to electromagnetic radiation to fuse the portion of the polymeric or polymeric composite build material in contact with the fusing agent to form a layer.

A system and process for direct printing onto textiles utilizes an aqueous ink having a non-aqueous dispersed liquid phase; a continuous aqueous phase; a thermal initiator; and a colorant. The continuous aqueous phase is comprised of water, a water miscible organic solvent, and a surfactant. The non-aqueous liquid phase, dispersed in the continuous aqueous phase, includes a prepolymer liquid wherein the state of the prepolymer liquid irreversibly changes from a liquid to a solid in response to irradiation of electron beams and/or application of heat.

In various aspects, a polymer resin is provided for vat or ultraviolet-assisted direct ink writing (UV-DIW) photopolymerization. The resin can include a polyamic acid salt formed from the addition of a photocrosslinkable amine to a polyamic acid. The resin can include a photoinitiator suitable for initiating crosslinking of the photocrosslinkable amine when exposed to a light source of a suitable wavelength and intensity. The polyamic acid can be formed, for instance, by the addition of a diamine to a suitable dianhydride. Methods of additive manufacturing using the resins are also provided.

In various aspects, a polymer resin is provided for vat or ultraviolet-assisted direct ink writing (UV-DIW) photopolymerization. The resin can include a polyamic acid salt formed from the addition of a photocrosslinkable amine to a polyamic acid. The resin can include a photoinitiator suitable for initiating crosslinking of the photocrosslinkable amine when exposed to a light source of a suitable wavelength and intensity. The polyamic acid can be formed, for instance, by the addition of a diamine to a suitable dianhydride. Methods of additive manufacturing using the resins are also provided.

A system and process for direct printing onto textiles utilizes an aqueous ink having a non-aqueous dispersed liquid phase; a continuous aqueous phase; a thermal initiator; and a colorant. The continuous aqueous phase is comprised of water, a water miscible organic solvent, and a surfactant. The non-aqueous liquid phase, dispersed in the continuous aqueous phase, includes a prepolymer liquid wherein the state of the prepolymer liquid irreversibly changes from a liquid to a solid in response to irradiation of electron beams and/or application of heat.