An active energy ray curable resin composition comprising: urethane poly(meth)acrylate (A) synthesized from a raw material including a polyisocyanate and a hydroxy group-containing (meth)acrylate; (meth)acrylate (B) having five or more functional groups; a photopolymerization initiator (C1) having an absorption coefficient per unit weight of 50000 ml/g.Math.cm or more when measured in methanol at 254 nm; a photopolymerization initiator (C2) other than the (C1) having an absorption coefficient per unit weight of 50000 ml/g.Math.cm or more when measured in methanol at 302 nm; a photopolymerization initiator (C3) other than the (C1) and the (C2) having an absorption coefficient per unit weight of 100 ml/g.Math.cm or more when measured in methanol at 405 nm; and an ultraviolet absorbing agent (D).

An electrochromic compound represented by the following formula (1) is provided:

##STR00001## where each of R.sub.1 to R.sub.9 and Ar.sub.1 to Ar.sub.6 independently represents one of a hydrogen atom, a halogen atom, a monovalent organic group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, a group in which two or more aryl and/or heteroaryl groups are condensed with each other to form a ring, and a polymerizable functional group; and at least one of Ar.sub.1 to Ar.sub.6 represents an aryl group, a heteroaryl group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, or a group in which at least two aryl or heteroaryl groups are condensed with each other to form a ring.

An electrochromic compound represented by the following formula (1) is provided:

##STR00001## where each of R.sub.1 to R.sub.9 and Ar.sub.1 to Ar.sub.6 independently represents one of a hydrogen atom, a halogen atom, a monovalent organic group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, a group in which two or more aryl and/or heteroaryl groups are condensed with each other to form a ring, and a polymerizable functional group; and at least one of Ar.sub.1 to Ar.sub.6 represents an aryl group, a heteroaryl group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, or a group in which at least two aryl or heteroaryl groups are condensed with each other to form a ring.

The invention pertains to a printing form and a process for preparing a polymeric printing form from a curable composition that includes a multifunctional urethane in a specified reactive group equivalent weight range, and an initiator. The process includes coating the curable composition onto a supporting substrate, such as a print cylinder, to form a layer, curing the layer with heat or by exposure to actinic radiation, and engraving the resulting cured layer to form at least one printing cell in the cured layer. The process prepares novel polymeric printing forms, particularly novel polymeric gravure printing forms, having a cured polymer-based composition layer that is engravable, resistant to solvent inks, and capable of printing gravure-quality images. The present invention shortens the time to prepare gravure printing cylinders and removes the need for and disposal of toxic heavy metals such as copper and chrome associated with conventional gravure print cylinder preparation.

The invention pertains to a printing form and a process for preparing a polymeric printing form from a curable composition that includes a multifunctional urethane in a specified reactive group equivalent weight range, and an initiator. The process includes coating the curable composition onto a supporting substrate, such as a print cylinder, to form a layer, curing the layer with heat or by exposure to actinic radiation, and engraving the resulting cured layer to form at least one printing cell in the cured layer. The process prepares novel polymeric printing forms, particularly novel polymeric gravure printing forms, having a cured polymer-based composition layer that is engravable, resistant to solvent inks, and capable of printing gravure-quality images. The present invention shortens the time to prepare gravure printing cylinders and removes the need for and disposal of toxic heavy metals such as copper and chrome associated with conventional gravure print cylinder preparation.

A curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. A triazine compound is used as a curable component in a curable composition, the triazine compound having an optionally substituted quinolinyl group, an optionally substituted isoquinolinyl group, or an optionally substituted 2-substituted benzothiazolyl group and an aromatic-ring-containing group having a radically polymerizable group-containing group or an aromatic-ring-containing group having a cationically polymerizable group-containing group, each group bonded to the triazine ring via an amino group.

A curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. A triazine compound is used as a curable component in a curable composition, the triazine compound having an optionally substituted quinolinyl group, an optionally substituted isoquinolinyl group, or an optionally substituted 2-substituted benzothiazolyl group and an aromatic-ring-containing group having a radically polymerizable group-containing group or an aromatic-ring-containing group having a cationically polymerizable group-containing group, each group bonded to the triazine ring via an amino group.

The invention pertains to a printing form and a process for preparing a polymeric printing form from a curable composition that includes a multifunctional urethane in a specified reactive group equivalent weight range, and an initiator. The process includes coating the curable composition onto a supporting substrate, such as a print cylinder, to form a layer, curing the layer with heat or by exposure to actinic radiation, and engraving the resulting cured layer to form at least one printing cell in the cured layer. The process prepares novel polymeric printing forms, particularly novel polymeric gravure printing forms, having a cured polymer-based composition layer that is engravable, resistant to solvent inks, and capable of printing gravure-quality images. The present invention shortens the time to prepare gravure printing cylinders and removes the need for and disposal of toxic heavy metals such as copper and chrome associated with conventional gravure print cylinder preparation.

The invention pertains to a printing form and a process for preparing a polymeric printing form from a curable composition that includes a multifunctional urethane in a specified reactive group equivalent weight range, and an initiator. The process includes coating the curable composition onto a supporting substrate, such as a print cylinder, to form a layer, curing the layer with heat or by exposure to actinic radiation, and engraving the resulting cured layer to form at least one printing cell in the cured layer. The process prepares novel polymeric printing forms, particularly novel polymeric gravure printing forms, having a cured polymer-based composition layer that is engravable, resistant to solvent inks, and capable of printing gravure-quality images. The present invention shortens the time to prepare gravure printing cylinders and removes the need for and disposal of toxic heavy metals such as copper and chrome associated with conventional gravure print cylinder preparation.

To provide a fluorinated compound capable of obtaining a cured product which is excellent in heat resistance and mold release and has a high Abbe number; a curable composition containing such a compound; and a cured product which is excellent in heat resistance and mold release and has a high Abbe number. The fluorinated compound is represented by the following formula (A):

[ZOCH.sub.2CF.sub.2CF.sub.2CF.sub.2OCFHCF.sub.2X-].sub.nQ(A)

where n is an integer of at least 1, Q is a n-valent organic group, X is O, NH or S, and Z is a group having at least one polymerizable functional group.