A urethane (meth)acrylate not comprising caprolactone is the product of reaction of A) a monoalcohol bearing from 1 to 5 (meth)acrylates, B) an allophanate-modified polyisocyanate, C) optionally, in the presence of a saturated polyol of functionality 2 to 3, D) optionally, in the presence of an unsaturated polyol with a hydroxyl functionality of 2 to 4, said polyol being C.sub.3 to C.sub.18, E) optionally, in the presence of a reactive diluent. A process for preparing the urethane (meth)acrylate includes reacting the monoalcohol A) and the polyisocyanate B) in the optional presence of C), D), and/or E). The urethane (meth)acrylate may be used in curable compositions for coatings, in particular for varnishes and inks, adhesives, adhesion primers, coatings for wood, metal or plastic and application by spray gun and provide a good compromise between reactivity, flexibility, adherence, hardness, and ease of use.

The present invention relates to a radiation curable ink composition comprising a gellant. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.

The present invention relates to a radiation curable ink composition comprising a gellant. The present invention further relates to an ink set comprising such ink composition. The present invention further relates to a method for making such ink composition and a printing method using such ink composition.

A fast-curing UV inkjet ink is based on hyperbranched polyester acrylates. The ink contains the following components: 1 wt % to 20 wt % of at least one hyperbranched polyester acrylate having a functionality in the range from 6 to 30, 1 wt % to 30 wt % of at least one reactive diluent, 1 wt % to 20 wt % of at least one free-radical photoinitiator of the Norrish I type, 30 wt % to 70 wt % of at least one multifunctional (meth)acrylate monomer, and 0 wt % to 30 wt % of at least one monofunctional (meth)acrylate monomer. The ink is particularly suited for inkjet printing and it is used in an inkjet printing process.

A fast-curing UV inkjet ink is based on hyperbranched polyester acrylates. The ink contains the following components: 1 wt % to 20 wt % of at least one hyperbranched polyester acrylate having a functionality in the range from 6 to 30, 1 wt % to 30 wt % of at least one reactive diluent, 1 wt % to 20 wt % of at least one free-radical photoinitiator of the Norrish I type, 30 wt % to 70 wt % of at least one multifunctional (meth)acrylate monomer, and 0 wt % to 30 wt % of at least one monofunctional (meth)acrylate monomer. The ink is particularly suited for inkjet printing and it is used in an inkjet printing process.

Provided are a photocurable composition for imprints, having good releasability and temporal stability of the releasability, a pattern forming method, and a method for manufacturing a device.

This photocurable composition for imprints includes a monofunctional chained aliphatic (meth)acrylate (A1) not containing a fluorine atom, a bifunctional or higher polyfunctional (meth)acrylate (A2) not containing a fluorine atom, a monofunctional (meth)acrylate (B) containing a fluorine atom, and a photopolymerization initiator (C), in which the monofunctional chained aliphatic (meth)acrylate (A1) not containing a fluorine atom has a boiling point of 100° C. to 200° C. at a pressure of 0.67 kPa, and the monofunctional (meth)acrylate (B) containing a fluorine atom has a boiling point of 100° C. to 200° C. at a pressure of 0.67 kPa.

A printed matter exhibiting metallic gloss is provided and includes: a substrate; and a metallic glossy layer, being formed on the substrate, and the metallic glossy layer containing scaly particles having a metal. In the metallic glossy layer, the scaly particles are oriented to be substantially parallel to a surface of the metallic glossy layer; and the surface of the metallic glossy layer has a DOI value of greater than or equal to 20% and a Sa value of less than or equal to 2 μm.

A pattern is formed on a substrate with forming a layer of a curable composition (A1) containing a component (a1) serving as a polymerizable compound and a component (e1) on a surface of the substrate, then dispensing droplets of a curable composition (A2) containing at least a component (a2) serving as a polymerizable compound dropwise discretely onto the layer of the curable composition (A1), subsequently sandwiching a mixture layer of the curable composition (A1) and the curable composition (A2) between a mold and the substrate, then irradiating the mixture layer with light to cure the layer, and releasing the mold from the mixture layer after the curing, a surface tension of a composition of components of the curable composition (A1) except a solvent being higher than a surface tension a composition of components of the curable composition (A2) except a solvent.

A pattern is formed on a substrate with forming a layer of a curable composition (A1) containing a component (a1) serving as a polymerizable compound and a component (e1) on a surface of the substrate, then dispensing droplets of a curable composition (A2) containing at least a component (a2) serving as a polymerizable compound dropwise discretely onto the layer of the curable composition (A1), subsequently sandwiching a mixture layer of the curable composition (A1) and the curable composition (A2) between a mold and the substrate, then irradiating the mixture layer with light to cure the layer, and releasing the mold from the mixture layer after the curing, a surface tension of a composition of components of the curable composition (A1) except a solvent being higher than a surface tension a composition of components of the curable composition (A2) except a solvent.

A pattern is formed on a substrate with forming a layer of a curable composition (A1) containing a polymerizable compound (a1) on a surface of the substrate, then dispensing droplets of a curable composition (A2) containing a polymerizable compound (a2) dropwise discretely onto the curable composition (A1) layer, subsequently sandwiching a mixture layer of the curable composition (A1) and the curable composition (A2) between a mold and the substrate, then irradiating the mixture layer with light to cure the mixture layer, and releasing the mold from the mixture layer after the curing. The curable composition (A1) except a solvent has a viscosity at 25° C. of 40 mPa.Math.s or more and less than 500 mPa.Math.s. The curable composition (A2) except a solvent has a viscosity at 25° C. of 1 mPa.Math.s or more and less than 40 mPa.Math.s.