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.

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.

The radiation curable ink compositions exhibit fasting curing, high flexibility and good adhesion to a broad range of substrates. The ink compositions include a dendritic or hyperbranched polyester acrylate component, which is present in an amount of 10-45% by weight and has a functionality of greater than 5. The compositions further include an oligomer component, a monomer component, a photoinitiator component, a colorant component, and an additive component. The compositions have a viscosity of not greater than 40 cP at 25° C. The radiation curable compositions are suitable for inkjet printing on a variety of substrates.

The radiation curable ink compositions exhibit fasting curing, high flexibility and good adhesion to a broad range of substrates. The ink compositions include a dendritic or hyperbranched polyester acrylate component, which is present in an amount of 10-45% by weight and has a functionality of greater than 5. The compositions further include an oligomer component, a monomer component, a photoinitiator component, a colorant component, and an additive component. The compositions have a viscosity of not greater than 40 cP at 25° C. The radiation curable compositions are suitable for inkjet printing on a variety of substrates.

Ink formulations suitable for deposition upon the intermediate transfer member of an indirect printing system and for transfer therefrom to a substrate. The inks are aqueous inkjet inks comprising an organic polymeric resin and a colorant. Ink film constructions including a plurality of continuous ink films fixedly adhered to the printing substrate that can be obtained with these inks are also disclosed. The inks and the printed constructions are such that the ink films and the dried inks composing them have a first dynamic viscosity within a range of 10.sup.6 cP to 5.Math.10.sup.7 cP at at least a first temperature within a first range of 60° C. to 87.5° C., and a second dynamic viscosity of at least 6.Math.10.sup.7 cP, for at least a second temperature within a second range of 50° C. to 55° C.

Ink formulations suitable for deposition upon the intermediate transfer member of an indirect printing system and for transfer therefrom to a substrate. The inks are aqueous inkjet inks comprising an organic polymeric resin and a colorant. Ink film constructions including a plurality of continuous ink films fixedly adhered to the printing substrate that can be obtained with these inks are also disclosed. The inks and the printed constructions are such that the ink films and the dried inks composing them have a first dynamic viscosity within a range of 10.sup.6 cP to 5.Math.10.sup.7 cP at at least a first temperature within a first range of 60° C. to 87.5° C., and a second dynamic viscosity of at least 6.Math.10.sup.7 cP, for at least a second temperature within a second range of 50° C. to 55° C.

The present invention relates to a series of novel polymerizable compounds based on 3-ketocoumarins, which are useful as photoinitiators and sensitizers, to compositions comprising said compounds and to a process for photopolymerizing comprising them. ##STR00001##