43results about How to "Good Pigment Dispersion" patented technology

An active energy ray-curable ink composition comprising a colorant, a monomer and a photopolymerization initiator, in which the monomer contains an acrylamide derivative in an amount of 10 to 90% by weight based on the whole weight of the ink composition, and the ink composition has a viscosity of 3 to 35 mPa·s at 25° C. The ink composition has a low viscosity without dilution by a diluent solvent, good storage stability, good pigment dispersibility when a pigment is used as a colorant and also good continuous ejection stability to a printing medium, has a good curing property at a low energy level such as a cumulative amount of light of 150 mJ / cm2 or less, and it can attain good printing quality on nonabsorbable printing medium and achieves good adhesion of printed images to the printing medium.

To provide an aqueous emulsion having excellent mechanical stability, pigment compatibility and, when formed into a film, capable of providing excellent film transparency and solvent resistance; and a coating prepared using the aqueous emulsion. [MEANS FOR SOLVING PROBLEMS] An aqueous emulsion comprising: a polymer comprising at least one monomer unit selected from the group consisting of a (meth)acrylate ester monomer unit, a styrene monomer unit and a diene monomer unit as a dispersoid; and (A) a vinyl alcohol polymer having 1.9 mol% or more of a 1,2-glycol bond and a saponification degree of 70 mol% or higher and (B) a surfactant as dispersants, the ratio of (A) / (B) being 50 / 50 to 95 / 5 by weight and the average particle diameter of the particles dispersed in the emulsion being 0.5 [mu]m or smaller. A coating prepared using the aqueous emulsion.

An oil based ink composition for inkjet printer comprising colored resin particles obtained by dispersion polymerization of a monofunctional polymerizable monomer (A) and a macromonomer (M) copolymerizable with the monomer (A) with coloring component fine particles comprising a surface-treated coloring agent, which are dispersed in a non-aqueous solvent having a dielectric constant of from 1.5 to 20 and a surface tension of from 15 to 60 mN / m at 25° C., as seed particles, in the presence of a dispersion stabilizer (P) soluble in the non-aqueous solvent and a polymerization initiator.

A method for manufacturing a dispersion, the method including a step of forming a reaction product by allowing at least two types of liquids to react with each other, the dispersion including a dispersion medium and particles formed from the reaction product dispersed therein. In the method described above, the at least two types of liquids are ejected from independently provided respective nozzles so that traveling directions of the liquids ejected therefrom intersect with each other at an angle of 120° or less and so that the liquids then flow in an integrated manner, whereby the reaction product is generated.

A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and / or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.

A resin composition for a toner including a polyester resin and a colorant, wherein the polyester resin has A(10)-A(180) of 70 or greater, where A(10) (%) is a transmittance of light having a wavelength of 500 nm through a mixture of 20 parts by mass of the polyester resin added to 80 parts by mass of ethyl acetate and stirred at 25° C. for 10 minutes, and A(180) (%) is the transmittance after the mixture is left to stand for 3 hours.

A non-aqueous ink composition for inkjet printing, comprising 5 to 15% by mass of pigment relative to a mass of the non-aqueous ink composition, a pigment dispersant in such an amount that a mass ratio of the pigment dispersant to the pigment ranges from 0.2 to 2.0, and an organic solvent, the pigment dispersant comprising(A) a polyamide having a polyester side chain and / or a copolymer of vinylpyrrolidone and a C10-40 alkene, and(B) an alkyl(alkyl)acrylate copolymer having a C12-25 alkyl group and a nitrogen-containing groupin such an amount that a mass ratio of the dispersant (B) to a total of the dispersant (A) and the dispersant (B), (B) / [(A)+(B)], ranges from 0.75 to 0.99. The ink composition has good storage stability and causes no satellite even printed in an environment of a low temperature.

Since a charge amount of a toner and a charge rise characteristic thereof are liable to be influenced by the change in temperature and humidity condition, the change in image density occurs in printing, and in particular, in high temperature and high humidity environment, inconveniences, such as image fogging, occur due to non-uniformity of the charge amount distribution. In a toner including toner particles obtained by dispersing a monomer composition containing a polymerizable monomer and a colorant in an aqueous medium to form droplets and polymerizing the polymerizable monomer in the droplets, the toner particles contain a polymer formed by a polymerization reaction of the polymerizable monomer and a metal compound having a vinyl group.

Provided are a composition that has excellent pigment dispersibility without affecting the color of a pigment in a visible range, a curable composition, a cured film, a near infrared cut filter, an infrared transmitting filter; a solid image pickup element, an infrared sensor, and a camera module. The composition includes: a pigment; a pigment derivative that includes a compound represented by Formula (1); and a solvent, in which R1 and R2 represent an aryl group or the like, R3 to R6 represent a cyano group, a heteroaryl group, or the like, R7 and R8 each independently represent —BR9R10 or the like, R9 and R10 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, an aryloxy group, or a heteroaryloxy group, L represents a single bond or a linking group, X represents an acidic group or the like, m represents an integer of 1 to 10, and n represents an integer of 1 to 10.

Composition containing an aqueous phase and an emulsifying system, where the emulsifying system contains at least one C10-C30 alkyl phosphate and at least one C8-C24 fatty alkyl ether of polyethylene glycol, the ether comprising from 1 to 19 ethylene glycol units and having an HLB<8 at 25° C. Process for making up or for non-therapeutically caring for keratin fibres, via the application to keratin fibres of the composition. Uses of the composition in particular for obtaining uniform and / or thick makeup on keratin fibres, and as mascara for making up keratin fibres.

A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and / or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.

A process for producing a resin-coated pigment capable of providing an ink and a paint being superior in dispersion stability of a pigment and having rapid drying property, high gloss and density without containing those such as an organic solvent and a salt that cause the lowering of performance of pigment dispersion, characterized in that a pigment is dispersed in an aqueous solution in which an anionic group-containing resin is dissolved in the presence of a basic compound and then, the anionic group-containing resin is precipitated on the surface of the pigment by removing the basic compound in the aqueous solution, using an ion exchange means.