Patent classifications
C09D11/101
Photocurable compositions and methods for 3D printing using them
The present disclosure relates generally to photocurable compositions and methods for continuously forming a three-dimensional body from these compositions. More particularly, the present disclosure relates to photocurable compositions comprising a mixture of polysiloxanes capable of being dually cured, i.e., first by UV radiation followed by thermal treatment, or being cured by UV radiation. In one aspect, the disclosure provides a photocurable composition, including: a first polysiloxane comprising at least two acrylate or methacrylate groups per molecule; a second polysiloxane containing at least one (e.g., at least two) Si—H group per molecule; a third polysiloxane containing at least one (e.g., at least two) reactive aliphatic ethylene group per molecule; a free radical photoinitiator in an amount of about 0.01 to about 10 weight % based on the total weight of (meth)acrylate-containing polysiloxane in the composition; and a hydrosilylation catalyst in an amount of about 0.001 to about 10 weight % hydride-containing polysiloxane and vinyl-containing polysiloxane in the composition.
Aqueous pigment inkjet ink
An aqueous pigment dispersion includes at least one dispersing agent having the general formula: ##STR00001## The aqueous pigment dispersion can be used in an aqueous inkjet ink which is useful for printing on textile fabrics.
Aqueous pigment inkjet ink
An aqueous pigment dispersion includes at least one dispersing agent having the general formula: ##STR00001## The aqueous pigment dispersion can be used in an aqueous inkjet ink which is useful for printing on textile fabrics.
ACTIVE ENERGY RAY CURABLE INKJET INK AND ACTIVE ENERGY RAY CURABLE INK SET
An active energy ray curable inkjet ink comprising a pigment (A), a colorant derivative (B), a pigment dispersing resin (C) and a polymerizable compound (D), wherein the pigment (A) contains a C.I. pigment blue 15:6 and a quinacridone-based pigment at a specific amount and a specific ratio, the colorant derivative (B) contains a quinacridone-based pigment derivative, and the pigment dispersing resin (C) has an acid value and an amine value in a specific range.
ACTIVE ENERGY RAY CURABLE INKJET INK AND ACTIVE ENERGY RAY CURABLE INK SET
An active energy ray curable inkjet ink comprising a pigment (A), a colorant derivative (B), a pigment dispersing resin (C) and a polymerizable compound (D), wherein the pigment (A) contains a C.I. pigment blue 15:6 and a quinacridone-based pigment at a specific amount and a specific ratio, the colorant derivative (B) contains a quinacridone-based pigment derivative, and the pigment dispersing resin (C) has an acid value and an amine value in a specific range.
PRINTING INK
The present invention provides an inkjet ink comprising: 10-50% by weight of one or more monomers each having a log P.sub.octanol/water value of 5.0 or more, based on the total weight of the ink; a photoinitiator package comprising one or more photoinitiators each having a log P.sub.octanol/water value of less than 4.0, and one or more photoinitiators selected from (I) and mixtures thereof, wherein n is a value from 1 to 10 and a+b+c is a value from 1 to 20; and wherein the one or more photoinitiators each having a log P.sub.octanol/water value of less than 4.0 are present in the ink in an amount of 0.5-4.5% by weight, based on the total weight of the ink. The present invention also provides a method of printing the inkjet ink of the present invention.
INK COMPOSITION AND ELECTRONIC DEVICE INCLUDING FILM FORMED USING THE INK COMPOSITION
An ink composition including: a quantum dot including one or more ligands on a surface of the quantum dot; a first monomer including one or more epoxy groups; a second monomer including one or more oxetane groups; and a vinyl group-containing compound including one or more vinyl groups, wherein the one or more ligands include one or more polar moieties. Also provided is an electronic apparatus including a film formed using the ink composition, and a light emitting device.
A COMPOSITION
The invention is directed towards a composition comprising: a near-infrared radiation absorbing compound; a colour-forming compound; and a heat transfer agent operable to facilitate heat transfer from the near-infrared radiation absorbing compound to the colour-forming compound; wherein the near-infrared radiation absorbing compound is present in an amount of 0.1-3.5 wt % of the total composition, and the heat transfer agent is present in an amount of 1-15 wt % of the total composition, and the heat transfer agent is present in the composition as solid particles. The invention further relates to substrates comprising the composition applied thereto, as well as methods of forming colour or an image on said substrates.
A COMPOSITION
The invention is directed towards a composition comprising: a near-infrared radiation absorbing compound; a colour-forming compound; and a heat transfer agent operable to facilitate heat transfer from the near-infrared radiation absorbing compound to the colour-forming compound; wherein the near-infrared radiation absorbing compound is present in an amount of 0.1-3.5 wt % of the total composition, and the heat transfer agent is present in an amount of 1-15 wt % of the total composition, and the heat transfer agent is present in the composition as solid particles. The invention further relates to substrates comprising the composition applied thereto, as well as methods of forming colour or an image on said substrates.
CHIRAL PHOTONIC INK AND IRIDESCENT PRODUCTS
Optically active formulations useful as inks in extrusion-based deposition techniques and solids formed of the formulations are described. Formulations include a cellulose derivative in a chiral nematic phase and a polyethylene glycol interspersed with the cellulose derivative as stabilization to the cholesteric pitch of the chiral nematic phase. The inks can be utilized in direct ink writing processes to produce printed films or three-dimensional structures with long-lasting colors that stem from the nanostructure of the chiral nematic phase. The ink can include reactive monomers which can be polymerized to create optically active solid elastomers.