Abstract: A method for preparing a surface modified organic pigment includes the steps of a) reacting the organic pigment in an aromatic hydrocarbon solvent with a surface modifying reagent to form a surface modified organic pigment; and b) washing and drying the surface modified organic pigment; wherein the surface modifying reagent is represented by Formula (I): wherein, X is selected from the group consisting of O, S and N—R3; Y is selected from the group consisting of —O—, and NR4; R1 to R4 are each independently selected from the group consisting of hydrogen, an alkyl group, an alkenyl group, an alkynyl group, a -aralkyl group, an alkaryl group, and an aryl group and s heteroaryl group; with the proviso that when Y—R1 is different from OH that at least one of R2 to R4 is substituted by at least one functional group having a pKa between 2.5 and 9.

Abstract: A radiation curable ink includes a) a monomer including at least one vinyl ether group and at least one (meth)acrylate group; b) a monomer including a five membered cyclic anhydride; and c) an aliphatic tertiary amine. The radiation curable ink allows stable inkjet printing on solder masks exhibiting good adhesion and high scratch resistance after curing.

Abstract: A free radical curable liquid having a specific weight after curing measured at 25° C. of less than 1.00 g/cm3 including: a) one or more photoinitiators; b) one or more free radical polymerizable monomers or oligomers; and c) hollow particles and/or a free radical crosslinkable polymer selected from the group consisting of polyethylene, polypropylene, polybutadiene, polymethylpentene, poly(ethylene-vinylacetate), poly(ethylene-ethyl acrylate) and poly(styrene-butadiene) and copolymers thereof; wherein at least the free radical crosslinkable polymer or at least one of the one or more free radical polymerizable monomers or oligomers includes one or more hydrolyzable groups which upon hydrolyzation form an acid group or salt thereof; and wherein the free radical curable liquid contains no more than 10 wt % of organic solvent.

Abstract: A free radical radiation curable liquid includes a) a photoinitiator; and b) a monomer or oligomer including an alkali hydrolyzable group. The alkali hydrolyzable group is an oxalate group located in the atomic chain between two free radical polymerizable groups of the monomer or oligomer including the alkali hydrolyzable group.

Abstract: A free radical radiation curable inkjet ink having a viscosity smaller than 30 mPa·s at 40° C. and at a shear rate of 1,000 s?1 includes a polymeric or polymerizable photoinitiator; a thiol compound; and a vitrification control monomer. The vitrification control monomer includes a (meth)acrylate group and an ethylenically unsaturated functional group selected from the group consisting of a vinyl ether group, an allyl ether group, and an allyl ester group, and the thiol compound includes no more than six thiol groups.

Abstract: A negative-working lithographic printing plate precursor includes a coating containing a photopolymerizable layer and optionally an intermediate layer between the photopolymerizable layer and the support, wherein the coating further includes a polysiloxane, the polysiloxane being present in the photopolymerizable layer and/or in the optional intermediate layer, and the polysiloxane is obtained by reacting at least one organosilicon compound represented by the general Formula (I) and at least one organosilicon compound represented by the general Formula (II):

Abstract: A polymerizable thioxanthone according to Formula (I): wherein A represents a thioxanthone moiety; R1 and R2 are independently selected from the group consisting of a hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, and a heteroaryl group; n represents 1 or 2; and R3 represents a moiety including at least one free radical polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrene group, a maleate, a fumarate, an itaconate, a vinyl ether, a vinyl ester, an allyl ether, and an allyl ester.

Abstract: A positive-working lithographic printing plate precursor which comprises on a support having a hydrophilic surface or which is provided with a hydrophilic layer, a heat and/or light-sensitive coating comprising an infrared adsorbing agent and a binder including a monomeric unit including a salicylic acid group and a monomeric unit including a sulfonamide group.

Abstract: A radiation curable composition includes a) at least one monomer comprising at least one vinyl ether group and at least one (meth)acrylate group; and b) at least one diffusion hindered photoinitiator selected from the group consisting of a polymeric photoinitiator, a multifunctional photoinitiator and a polymerizable photoinitiator characterized in that the diffusion hindered photoinitiator includes at least one structural moiety according to Formula (I): wherein: R1 and R2 are independently selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkaryl group, a substituted or unsubstituted aryl or heteroaryl group, a halogen, an ether, a thioether, an aldehyde, a ketone, an ester, an amide, an amine and a nitro group; R1 and R2 may represent the necessary atoms to form a five to eight membered rin

Abstract: An alkali soluble resin is disclosed comprising a first monomeric unit including at least one sulfonamide group and a second monomeric unit derived from the monomer according to the following structure (I) wherein R1 represents a structural moiety comprising an ethylenically unsaturated polymerizable group; R2, R3 and R4 independently represent hydrogen, an optionally substituted alkyl, alkenyl, alkynyl, alkaryl, aralkyl, aryl or heteroaryl group or, the necessary atoms to form a five to eight membered ring.

Abstract: A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.

Abstract: A specific type of carbazole photoinitiator is capable of providing radiation curable compositions that are curable by UV LEDs and do not exhibit an unstable yellowing behavior in an image upon storage like ITX.

Abstract: A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.

Abstract: An inkjet printing radiation curable inkjet ink for forming a protective layer during an etching process includes at least 70 percent by weight of a polymerizable composition based on the total weight of radiation curable inkjet ink, wherein the polymerizable composition has an oxygen fraction OFR>0.250 and a weighted polymerizable functionality WPF?0.0050, and the polymerizable composition contains no polymerizable compound with an ethylenic double bond and including a phosphoester group or a carboxylic acid group in the molecule thereof.

Abstract: A method for making a lithographic printing plate is disclosed which comprises the steps of: (1) providing a heat-sensitive lithographic printing plate precursor comprising on a support having a hydrophilic surface or which is provided with a hydrophilic layer, a heat-sensitive coating, (2) image-wise exposing said precursor with IR-radiation or heat, and (3) developing said image-wise exposed precursor with an alkaline developing solution, characterised in that a sludge inhibiting agent is present in said precursor or in said developing solution or in said precursor and said developing solution, and wherein said sludge inhibiting agent is a triazaindolisine compound. According to the above method, the formation of sludge is inhibited or reduced.

Abstract: A polymerizable polymeric photoinitiator according to Formula (I): wherein: PL represents an n+m+p-functional polymeric core; n and m independently represent an integer from 1 to 30; p represents an integer from 0 to 10; o is 0 or 1; INI represents a group selected from the group consisting of a benzophenone, a thioxanthone, a carbazole, a anthraquinone, a camphor quinone, an ?-hydroxyalkylphenone, an ?-aminoalkylphenone, an acylphosphine oxide, a bisacyl phosphine oxide, an acylphosphine sulfide, a phenyl glyoxalate, a benzoin ether, a benzyl ketal, an ?-dialkoxyacetophenone, a carbazolyl-O-acyl-oxime, an ?-haloarylketone and an ?-haloaryl sulfone; L3 and L4 represent a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms; A represents a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a methacryl amide, a maleate, a fumarate, an itaconate, an vinyl ether, an allyl ether, an allyl ester,

Abstract: A method for preparing a surface modified organic pigment includes the steps of a) reacting the organic pigment in an aromatic hydrocarbon solvent with a surface modifying reagent to form a surface modified organic pigment; and b) washing and drying the surface modified organic pigment; wherein the surface modifying reagent is represented by Formula (I): wherein, X is selected from the group consisting of O, S and N—R3; Y is selected from the group consisting of —O and NR4; R1 to R4 are each independently selected from the group consisting of hydrogen, an alkyl group, an alkenyl group, an alkynyl group, a -aralkyl group, an alkaryl group, and an aryl group and s heteroaryl group; with the proviso that when Y—R1 is different from OH that at least one of R2 to R4 is substituted by at least one functional group having a pKa between 2.5 and 9.

Abstract: A radiation curable liquid includes at least one free radical polymerizable monomer or oligomer, at least one diffusion hindered acetalysation catalyst, and at least one diffusion hindered hydroxyl containing compound. The radiation curable liquid applied to a substrate prevents migration of very low viscous monomers, such as vinyl ether acrylate monomers, into the substrate.

Abstract: A non-aqueous pigment dispersion includes a pigment, a non-aqueous dispersion medium, and a polymeric dispersant including at least one oxalylamide structural unit according to Formula (I): wherein: R1 represents a first polymeric moiety selected from the group consisting of a linear polymeric moiety, a star shaped polymeric moiety, a dendritic polymeric moiety, a branched polymeric moiety, and a hyperbranched polymeric moiety; and R2 represents a second polymeric moiety selected from the group consisting of a polyester, a polyether, a polyamide, a polyacrylate, a polymethacrylate, or copolymers thereof.

Abstract: An intermediate for preparing (meth)acrylated photoinitiators according to Formula (I): wherein: R1 is selected from the group consisting of hydrogen and a methyl group; A represents a group including at least one photoinitiating moiety; L represents a n+o-valent linking group including at least one carbon atom; n and o each independently represent an integer from 1 to 4; p is equal to 0 or 1; X represents a group selected from the group consisting of Cl, Br, I, and R2SO3; and R2 represents an optionally substituted group selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group, an alkaryl group, an aralkyl group, an aryl group and a heteroaryl group. Also, a method for the preparation of (meth)acrylated photoinitiators by ?-elimination of HX from the intermediate according to Formula (I).