Abstract: The invention describes the use of a water-based UV curable inkjet printing ink wherein the ink is basic due to the presence of a tertiary amine, allowing the complete dissolution of an acid functional photoinitiator of Formula I or Formula IA (wherein R1, R2, R3, n, q, and y are as defined herein). This combination of photoinitiator and tertiary amine allows the rapid low dosage UV curing of a water-based UV formulation using a UV LED light source.

Abstract: The invention describes the use of a water-based UV curable inkjet printing ink wherein the ink is basic due to the presence of a tertiary amine, allowing the complete dissolution of an acid functional photoinitiator of Formula I or Formula IA (wherein R1, R2, R3, n, q, and y are as defined herein). This combination of photoinitiator and tertiary amine allows the rapid low dosage UV curing of a water-based UV formulation using a UV LED light source.

Abstract: The acrylate monomers of the present invention, particularly o-phenyl phenoxyethyl acrylate, provide very fast curing, hard and solvent resistant digital printing inks, and yet are also still surprisingly flexible. These properties make for a technically superior alternative to the widely accepted very hard monomer isobornyl acrylate. O-phenyl phenoxyethylacrylate also has the additional benefit of being free from the strong odor associated with isobornyl acrylate.

Abstract: Cyclic carbamate functional compounds, which are the reaction product of a cyclic carbamate having an acrylate functional group, such as N-(2-acryloyloxyethyl)oxazolidinone, with aliphatic amine compounds, said cyclic carbamate functional compounds being useful as oxygen scavengers in energy-curable compositions, such as inks, coatings and adhesives, that comprise (a) the cyclic carbamate functional compound, (b) reactive monomers and/or oligomers and, optionally, (c) a photoinitiator.

Abstract: A series of novel ketocoumarin photoinitiators are disclosed for use in radiation curing.

Abstract: The acrylate monomers of the present invention, particularly o-phenyl phenoxyethyl acrylate, provide very fast curing, hard and solvent resistant digital printing inks, and yet are also still surprisingly flexible. These properties make for a technically superior alternative to the widely accepted very hard monomer isobornyl acrylate. O-phenyl phenoxyethylacrylate also has the additional benefit of being free from the strong odor associated with isobornyl acrylate.

Abstract: A series of novel ketocoumarin photoinitiators are disclosed for use in radiation curing.

Abstract: Cyclic carbamate functional compounds, which are the reaction product of a cyclic carbamate having an acrylate functional group, such as N-(2-acryloyloxyethyl)oxazolidinone, with aliphatic amine compounds, said cyclic carbamate functional compounds being useful as oxygen scavengers in energy-curable compositions, such as inks, coatings and adhesives, that comprise (a) the cyclic carbamate functional compound, (b) reactive monomers and/or oligomers and, optionally, (c) a photoinitiator.

Abstract: Compounds of formula (I) [in which: A and B are terminal groups; R1 represents a group of formula (II) or (III); R2 is alkyl or aryl; Z is a group —(CHR3)n, where R3 is hydrogen, hydroxy or alkyl, and n is a number from 0 to 6; Y is carbonyl or a group —CH2—; Q represents a residue of a dihydroxy compound; and x is a number from 1 to 100] are useful sensitisers for use with Type II photoinitiators in the formulation of printing inks and other energy curable coatings.

Abstract: Compounds of formula (I): wherein the substituents are as defined herein.

Abstract: Compounds of formula (I): [where: the substituents R1 are individually selected from C1-C10 alkyl groups and optionally substituted benzyl groups; the substituents R2 are individually selected from alkyl groups or, together with the nitrogen atom to which they are attached, represent a nitrogen-containing heterocyclic group; Z is selected from C6-C10 arylene groups and groups of formula —(CHR3)n—, where R3 is hydrogen, hydroxy or a C1-C4 alkyl group, and n is 0 to 6; Y is carbonyl or —CH2—; Q is a residue of a mono- or poly-hydroxy compound; and x is 1 to 6; and esters thereof] are useful as multi-functional photoinitiators for use in coating compositions to be cured by radiant energy.

Abstract: Compounds of formula (I): [where: R1 is a direct bond, oxygen, a group >CH2, sulphur, a group >C?O, a group —(CH2)2— or a group —N—Ra, where Ra is hydrogen or alkyl; R3, R4, R5 and R6 are hydrogen or substituents ?; R8, R9, R10 and R11 are hydrogen, hydroxy or alkyl; or R9 and R11 are joined to form a fused ring system with the benzene rings to which they are attached; R7 is a direct bond, oxygen or a —CH2— group; p is 0 or 1; substituents ? are: alkyl, alkoxy, alkenyl, halogen, nitrile, hydroxyl, aryl, aralkyl, aryloxy, aralkyloxy, arylalkenyl, cycloalkyl, carboxy, carboxyalkoxy, alkoxycarbonyl, aryloxycarbonyl, alkylcarbonyloxy, alkanesulphonyl, arenesulphonyl, alkanoyl or arylcarbonyl; n is 1 to 12; R12 is hydrogen, methyl or ethyl; A is a group —[O(CHR13CHR14)a]y—, —[O(CH2)bCO]y—, or —[O(CH2)bCO](y?1)—[O(CHR13CHR14)a]—, where: one of R13 and R14 is hydrogen and the other is hydrogen, methyl or ethyl; a is 1 to 2; b is 4 to 5; Q is a residue of a polyhydroxy compound having from 2 to 6 hydroxy gr

Abstract: Compounds of formula (I): [where: R1 is a direct bond, oxygen, a group >CH2, sulphur, a group >C?O, a group —(CH2)2— or a group —N—Ra, where Ra is hydrogen or alkyl; R3, R4, R5 and R6 are hydrogen or substituents ?; R8, R9, R10 and R11 are hydrogen, hydroxy or alkyl; or R9 and R11 are joined to form a fused ring system with the benzene rings to which they are attached; R7 is a direct bond, oxygen or a —CH2— group; p is 0 or 1; substituents ? are: alkyl, alkoxy, alkenyl, halogen, nitrile, hydroxyl, aryl, aralkyl, aryloxy, aralkyloxy, arylalkenyl, cycloalkyl, carboxy, carboxyalkoxy, alkoxycarbonyl, aryloxycarbonyl, alkylcarbonyloxy, alkanesulphonyl, arenesulphonyl, alkanoyl or arylcarbonyl; n is 1 to 12; R12 is hydrogen, methyl or ethyl; A is a group —[O(CHR13CHR14)a]y—, —[O(CH2)bCO]y—, or —[O(CH2)bCO](y-1)—[O(CHR13CHR14)a]—, where: one of R13 and R14 is hydrogen and the other is hydrogen, methyl or ethyl; a is 1 to 2; b is 4 to 5; Q is a residue of a polyhydroxy compound having from 2 to 6 hydroxy gr

Abstract: Polyfunctional cyclic carbonates provide a useful additional monomer for energy-initiated cationic copolymerisation with such other monomers and oligomers as epoxides and oxetanes.

Abstract: Compounds of formula (I): [where: R1 is a direct bond, oxygen, a group >CH2, sulphur, a group >C?O, a group —(CH2)2— or a group-N-Ra, where Ra is hydrogen or alkyl; R3, R4, R5 and R6 are hydrogen or substituents ?; R8, R9, R10 and R11 are hydrogen, hydroxy or alkyl; or R9 and R11 are joined to form a fused ring system with the benzene rings to which they are attached; R7 is a direct bond, oxygen or a —CH2-group; p is 0 or 1; substituents ? are: alkyl, alkoxy, alkenyl, halogen, nitrile, hydroxyl, aryl, aralkyl, aryloxy, aralkyloxy, arylalkenyl, cycloalkyl, carboxy, carboxyalkoxy, alkoxycarbonyl, aryloxycarbonyl, alkylcarbonyloxy, alkanesulphonyl, arenesulphonyl, alkanoyl or arylcarbonyl; n is 1 to 12; R12 is hydrogen, methyl or ethyl; A is a group —[O(CHR13CHR14)a]y—, —[O(CH2)bCO]y—, or —[O(CH2)bCO](y?1)—[O(CHR13CHR14)a]—, where: one of R13 and R14 is hydrogen and the other is hydrogen, methyl or ethyl; a is 1 to 2; b is 4 to 5; Q is a residue of a polyhydroxy compound having from 2 to 6 hydroxy gro

Abstract: Compounds of formula (I): [where: the substituents R1 are individually selected from C1-C10 alkyl groups and optionally substituted benzyl groups; the substituents R2 are individually selected from alkyl groups or, together with the nitrogen atom to which they are attached, represent a nitrogen-containing heterocyclic group; Z is selected from C6-C10 arylene groups groups of formula —(CHR3)n—, where R3 is hydrogen, hydroxy or a C1-C4 alkyl group, and n is 0 to 6; Y is carbonyl or a residue of a mono- or poly-hydroxy compound; and x is 1 to 6; and esters thereof] are useful as multi-functional photoinitiators for use in coating compositions to be cured by radiant energy.

Abstract: Compounds of formula (I): [where: R1 is a direct bond, oxygen, a group >CH2, sulphur, a group >C?O, a group-(CH2)2— or a group-N—Ra, where Ra is hydrogen or alkyl; R3, R4, R5 and R6 are hydrogen or substituents?; R8, R9, R10 and R11 are hydrogen, hydroxy or alkyl; or R9 and R11 are joined to form a fused ring system with the benzene rings to which they are attached; R7 is a direct bond, oxygen or a —CH2-group; p is 0 or 1 ; substituents? are: alkyl, alkoxy, alkenyl, halogen, nitrile, hydroxyl, aryl, aralkyl, aryloxy, aralkyloxy, arylalkenyl, cycloalkyl, carboxy, carboxyalkoxy, alkoxycarbonyl, aryloxycarbonyl, alkylcarbonyloxy, alkanesulphonyl, arenesulphonyl, alkanoyl or arylcarbonyl; n is 1 to 12; R12 is hydrogen, methyl or ethyl; A is a group —[O(CHR13CHR14)a]y—, —[O(CH2)bCO]y-, or —[O(CH2)bCO](y-1)-[O(CHR13CHR14)a]—, where: one of R13 and R14 is hydrogen and the other is hydrogen, methyl or ethyl; a is 1 to 2 ; b is 4 to 5 ; Q is a residue of a polyhydroxy compound having from 2 to 6 hydroxy groups;

Abstract: Compounds of formula (I) [in which: A and B are terminal groups; R1 represents a group of formula (II) or (III); R2 is alkyl or aryl; Z is a group —(CHR3)n, where R3 is hydrogen, hydroxy or alkyl, and n is a number from 0 to 6; Y is carbonyl or a group —CH2—; Q represents a residue of a dihydroxy compound; and x is a number from 1 to 100] are useful sensitisers for use with Type II photoinitiators in the formulation of printing inks and other energy curable coatings.

Abstract: Compounds of formula (I) where: {R1 is methyl, ethyl, cycloalkyl or optionally substituted aryl; Z is arylene or a group of formula —(CHR4)n-, where R4 is hydrogen, hydroxy or alkyl, and n is a number from 0 to 6; Y is carbonyl or a —CH2— group; Q is a residue of a mono- or poly-hydroxyl compound having from I to 6 hydroxy groups; and x is a number from I to 6; and esters thereof} are useful as sensitizers for use in radiationcurable compositions.

Abstract: Compounds of formula (I): [where: R1 is a direct bond, oxygen, a group >CH2, sulphur, a group >C?O, a group-(CH2)2— or a group-N—Ra, where Ra is hydrogen or alkyl; R3, R4, R5 and R6 are hydrogen or substituents?; R8, R9, R10 and R11 are hydrogen, hydroxy or alkyl; or R9 and R11 are joined to form a fused ring system with the benzene rings to which they are attached; R7 is a direct bond, oxygen ora —CH2-group; p is 0 or 1 ; substituents? are: alkyl, alkoxy, alkenyl, halogen, nitrile, hydroxyl, aryl, aralkyl, aryloxy, aralkyloxy, arylalkenyl, cycloalkyl, carboxy, carboxyalkoxy, alkoxycarbonyl, aryloxycarbonyl, alkylcarbonyloxy, alkanesulphonyl, arenesulphonyl, alkanoyl or arylcarbonyl; n is 1 to 12; R12 is hydrogen, methyl or ethyl; A is a group —[O(CHR13CHR14)a]y—, —[O(CH2)bC0]y-, or —[O(CH2)bC0](y-1)-[O(CHR13CHR14)a]—, where: one of R13 and R14 is hydrogen and the other is hydrogen, methyl or ethyl; a is 1 to 2 ; b is 4 to 5 ; Q is a residue of a polyhydroxy compound having from 2 to 6 hydroxy groups; x