31results about How to "Less discoloration" patented technology

There is provided a toner for developing a latent electrostatic image, obtained by a method containing: ejecting a toner composition fluid from an ejection hole so as to make the toner composition fluid into droplets; and solidifying the droplets in an atomizing space so as to form solid particles, wherein the toner composition fluid contains at least a colorant formed by reacting a polymer containing 10 mol % or more of a monomer unit having a sulfonic acid group or a salt thereof, or a monomer unit having a sulfuric acid group or a salt thereof as a constitutional unit, and a basic dye.

A liquid crystal panel of the present invention comprises at least: a liquid crystal cell comprising a liquid crystal layer containing a liquid crystal molecule that is oriented in homogeneous alignment with no electric field applied thereto; a first polarizer placed on one side of the liquid crystal cell; a first optical element placed between the liquid crystal cell and the first polarizer; and a second polarizer placed on the other side of the liquid crystal cell, wherein the first optical element is substantially optically isotropic, the liquid crystal cell has an initial alignment direction that is substantially parallel to the direction of an absorption axis of the first polarizer, and the absorption axis of the first polarizer is substantially perpendicular to an absorption axis of the second polarizer. The liquid crystal panel shows less discoloration of images even when the screen is viewed from oblique directions.

The present invention relates to the antioxidant compounds which are synthesized or derived from benzofuranone compound and benzoic acid compound. The antioxidant compound with remarkable heat resistance possesses carbon-centered radical quencher and primary antioxidant synergism. It can be use as additive for polymer to enhance its stability of melting flow and color.

There is provided a coating composition having a good wetting property which is capable of forming a coating film exhibiting a high refractive index, a less discoloration, and excellent transparency and uniformity when polymerized and cured. The present invention relates to a coating composition comprising (A) 100 parts by weight of a thiirane ring-containing compound, (B) 0.0001 to 10 parts by weight of a catalyst for accelerating polymerization of the thiirane ring-containing compound, and (C) 0.005 to 4 parts by weight of a modified silicone oil; a coating film produced from the composition; and an optical product provided with the coating film.

An addition-curable silicone composition comprising a phenyl group and capable of obtaining a cured product excellent in heat resistance, with little weight change and little discoloration at high temperatures. The addition-curable silicone composition of the present invention comprises the following components: (A-1) branched organopolysiloxane represented by formula (1); (A-2) linear organopolysiloxane represented by formula (2) Organopolysiloxanes, (B) organohydrogenpolysiloxanes, which have at least 2 or more hydrogen atoms bonded to silicon atoms in one molecule; (C) polyorganometallic siloxanes, containing Si‑O -Ce bond and Si-O-Ti bond, the Ce content is 50-5000ppm, the Ti content is 50-5000ppm, the viscosity at 25°C is 10-10000mPa·s, relative to the total number of organic groups contained in one molecule, having at least 10 mole percent aryl groups; and (D) a hydrosilylation catalyst comprising a platinum group metal.

Provided are a silver product which has high hardness (HV), rarely undergoes metal corrosion, rarely undergoes discoloration, and is produced by using pure silver and an ultra-high purity silver alloy, and a method for producing the silver product. The silver product is characterized by being composed of pure silver or a silver alloy having a purity of 99.9 wt% or more and has a Vickers hardness of 60 HV or more, and the value of h2 / h1 is 0.2 or more, where h1 is the height of a peak having a 2 [theta] of 38 degrees minus or plus 0.2 degrees in an X-ray diffraction pattern obtained by XRD analysis of the silver product, and h2 is the height of a peak having a 2 [theta] of 44 degrees minus or plus 0.4 degrees.

Described is a method for preparing a purified liquid containing carbohydrates. The method comprises the steps of: hydrolysing starch to a dextrose equivalent (DE) of 10 or above, thus obtaining a liquid of carbohydrates; removing a heavy weight sludge fraction from the light weight liquid of carbohydrates using centrifugation; filtering the remaining liquid of carbohydrates, the filter being capable of retaining coarser particles while allowing particles with a diameter less than 2 μm to pass; performing membrane separation on the filtered liquid of carbohydrates using a membrane having a pore size at 2 μm or below; and recovering a permeate stream of purified liquid containing carbohydrates. Also disclosed in a plant for performing the method.

Solid phosphite compositions comprising tris(4-t-alkylphenyl)phosphites and selected hydroxyalkyl amines exhibit surprising performance compared with other phosphite stabilizers in the stabilization of polymers, such as polyolefins and the like, particularly in the prevention of color formation during high temperature processing or when exposed to certain gasses during storage, e.g., “gas fading”.