A method for conferring bacteriostatic or bactericidal properties on a surface of an object, comprising: (a) putting the surface into contact with an aqueous solution comprising an ionene-type polymer functionalised by at least one radically polymerisable function, an organic compound with two radically polymerisable functions, an organic compound with three radically polymerisable functions and a photoinitiator, (b) subjecting the surface coated with the aqueous solution to irradiation by means of which a radical polymerisation is initiated and a grafted three-dimensional polymer network comprising ionene-type polymers is obtained. The aqueous solution and the object thus obtained as well as uses thereof in particular for preparing protective garments, for packaging and/or storing fresh food products but also for purifying or decontaminating a solution or a surface.

Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA), wherein a composition of one or more photocurable compounds, such as a compound with multiple ethylenically unsaturated groups and a compound with multiple thiol groups, is photopolymerized, optionally in the presence of two or more thermocurable compounds which are reactive with one another and are subjected to thermopolymerization, to form a manufactured article in solid form.

An active energy ray curing composition contains a polymerizable monomer having a phosphoric acid ester group and a polyester resin having an unsaturated bond and a number average molecular weight of 3,000 or less.

An image forming method is provided that includes: applying, on a base, an active energy ray-curable composition A containing a polymerizable monomer having a phosphoric ester group and a polyester resin; curing the active energy ray-curable composition A; applying, on a cured object of the active energy ray-curable composition A, an active energy ray-curable composition B containing a multifunctional polymerizable compound having two or more polymerizable functional groups in its molecule; and curing the active energy ray-curable composition B.

An active energy ray curing composition contains a urethane acrylate oligomer (A) having three or more polymerizable functional groups, a polyfunctional monomer (B) having three or more polymerizable functional groups, a monofunctional monomer (C), and a surfactant (D) having a siloxane bond, wherein the urethane acrylate oligomer (A) has a glass transition temperature of 85 degrees C. or lower, wherein the urethane acrylate oligomer (A) has a weight average molecular weight of from 1,000 to 9,000, wherein the polyfunctional monomer (B) accounts for 22.0 to 60.0 percent by mass of the entire of the active energy ray curing composition.

This disclosure is directed to formulations for inks and methods for achieving those formulations for use in an emerging class of variable data digital lithographic image forming devices. Specific sub-system requirements that are unique to the emerging architecture caused an exploration of formula boundaries that, through experimentation, were determined to substantially reduce particle sizes for the color pigments enabling a higher latitude for ink image thickness. Experimentally-derived behavior in reducing particle size and adjusting rheological properties results when a inks are processed using a 3-roll mill with cooling employed. Inks demonstrated a preferably reduced preferred particle size distribution enabling a higher latitude for ink image thickness down to about 0.5 microns. Improved rheological profiles allow the inks to have higher zero-shear or static viscosity to be less runny and to allow more consistent flow into and through ink loaders and Anilox systems to a reimageable surface of an imaging member.

This disclosure is directed to formulations for inks and methods for achieving those formulations for use in an emerging class of variable data digital lithographic image forming devices. Specific sub-system requirements that are unique to the emerging architecture caused an exploration of formula boundaries that, through experimentation, were determined to substantially reduce particle sizes for the color pigments enabling a higher latitude for ink image thickness. Experimentally-derived behavior in reducing particle size and adjusting rheological properties results when a inks are processed using a 3-roll mill with cooling employed. Inks demonstrated a preferably reduced preferred particle size distribution enabling a higher latitude for ink image thickness down to about 0.5 microns. Improved rheological profiles allow the inks to have higher zero-shear or static viscosity to be less runny and to allow more consistent flow into and through ink loaders and Anilox systems to a reimageable surface of an imaging member.

A UV curable inkjet ink contains at least one free radical photoinitiator and at least 30 wt % of a mixture including 0 to 45 wt % of a polymerizable oligomer, at least 5 wt % of a polyfunctional propoxylated acrylate and at least 20 wt % of a monofunctional ethoxylated methacrylate according to Formula (I):

##STR00001##

with n representing an integer of 1 to 4 and R representing an alkyl group; the weight ratio of the polyfunctional propoxylated acrylate over the monofunctional ethoxylated methacrylate is less than 1.60; and all the weight percentages wt % are based on the total weight of the UV curable inkjet ink.

A UV curable inkjet ink contains at least one free radical photoinitiator and at least 30 wt % of a mixture including 0 to 45 wt % of a polymerizable oligomer, at least 5 wt % of a polyfunctional propoxylated acrylate and at least 20 wt % of a monofunctional ethoxylated methacrylate according to Formula (I):

##STR00001##

with n representing an integer of 1 to 4 and R representing an alkyl group; the weight ratio of the polyfunctional propoxylated acrylate over the monofunctional ethoxylated methacrylate is less than 1.60; and all the weight percentages wt % are based on the total weight of the UV curable inkjet ink.

Thermal transformative variable gloss control produces selectively variable levels of gloss finish on thermoformed materials. In embodiments, the power level of LED curing lamps associated with an ink jet printer that is using thermoforming inks for printing is selectively varied depending upon a desired level of gloss in a finished substrate. Heat treating of the substrate during thermoforming or in an oven develops the glossy finish on the substrate in relation to the level of power applied to the printer LED curing lamps during printing.