11results about How to "Inhibit coloring" patented technology

A method for manufacturing a photochromic lens of the present invention is a method of using an injection molding apparatus (10) that includes: an approximately circular-shaped substrate (12), an approximately circular-shaped resin substrate (14) disposed to face a surface (12a) of the substrate (12), a fixing member (16) fixing the circumferential edge part of the substrate (12) and the circumferential edge part of the resin substrate (14), a gap (20) formed between the substrate (12) and the resin substrate (14) and having a width in the thickness direction of 0.1 to 2.5 mm at an approximate circle center part, an injection part (18) provided in the fixing member (16) for injecting a polymerizable composition into the gap (20), and a space (22) formed in at least a portion of the periphery of the gap (20) and allowing the injection part (18) to communicate with the gap (20), in which the space (22) is formed between the substrate (12) and a notch part (24) formed in at least a portion of the periphery of the resin substrate (14), while a width i in the thickness direction of the space (22) is larger than the width in the thickness direction of the gap (20), the method includes: a step of injecting the polymerizable composition through the injection part (18) and filling the gap (20) with the polymerizable composition through the space (22); a step of heating the filled polymerizable composition to be polymerized and cured and forming a photochromic layer on the resin substrate (14); and a step of taking out a resulting laminate composed of the resin substrate (14) and the photochromic layer, in which the polymerizable composition includes an isocyanate compound, a thiol compound, a polyol compound, and a photochromic compound.

The application relates to an injection molding material of a remote controller shell, a preparation method and an injection molding process, and belongs to the technical field of plastic processing. The injection molding material of the remote controller shell comprises the following raw materials in parts by weight: 60-70 parts of ABS, 10-15 parts of modified rice husk powder, 3-4 parts of an ABS-g-MAH compatilizer, 8-10 parts of modified basalt fiber, 0.6-1.0 parts of an ultradispersion lubricant, 0.3-0.5 parts of an antioxidant and 3-5 parts of an MBS toughening agent. The application introduces a polydopamine layer on the surface of the rice husk powder by modifying the rice husk powder, the polydopamine has rich benzene rings, can form a pi-pi conjugation effect between the benzene rings in the ABS, and makes the molecular chains of the ABS entangled on the surface of the modified rice husk powder, thereby enhancing the dispersity of the modified rice husk powder in the ABS. In addition, the polydopamine is black in color, the rice husk powder coated with the polydopamine is also black, and the color difference between the remote controller shell after adding the rice husk powder and the traditional black color is avoided.

Provided are: an acid generator which has excellent solubility in a cationic curable compound; and a curable composition which can be quickly cured by heat treatment and which forms a cured product having excellent insulating properties. This acid generator contains a salt (1) of a cation represented by formula (c-1) and an anion represented by formula (a-1). In formula (c-1), R1, R2, and R3 may be the same or different and each represents a C1-6 alkyl group. In formula (a-1), Rf11 represents a fluoroalkyl group, and s represents an integer of 1-5. In formula (a-2), Rf12 represents a fluoroalkyl group, a fluoroaryl group, or a fluoroalkyl-substituted aryl group, t represents an integer from 1 to 4, and u represents 0 or 1. # imgabs0 #

This fiber-reinforced polyamide resin composition contains a crystalline polyamide (A1) and a glass fiber (B1), and has a formic acid relative viscosity of 90 or more. The fiber-reinforced polyamide resin composition is characterized in that an insoluble component when the fiber-reinforced polyamide resin composition is dissolved in formic acid is 105 mass% or more relative to the ash content of the fiber-reinforced polyamide resin composition, and the ratio of glass fibers having a fiber length of 250 [mu] m or less among the glass fibers (B1) contained in the fiber-reinforced polyamide resin composition is 55% or less.

The present invention provides an anti-glare anti-reflection component that can suppress coloring when observed from an oblique direction, thereby suppressing the situation where a bright spot is locally observed. An anti-glare anti-reflection component that has an anti-glare layer and a low refractive index layer on a substrate, wherein when the film thickness difference of the low refractive index layer in an arbitrary 2 mm×2 mm area of ​​the anti-glare anti-reflection component is defined as Δd, the average of Δd is greater than or equal to 7.0 nm and less than or equal to 40.0 nm.

This invention provides a method for manufacturing a polycarbonate compound, the method comprising the following steps: when a raw material containing a carbonyl compound represented by the following general formula (1) is subjected to a polymerization reaction in the presence of a metal salt catalyst to generate a polycarbonate compound, the metal salt catalyst is present in a solid state in the reaction system of the polymerization reaction. In general formula (1), R... 1 Indicates alkyl or cycloalkyl. R 2 Represents a hydrogen atom, alkoxycarbonyl, or cycloalkoxycarbonyl. L represents a divalent organic group. n is an integer greater than or equal to 1.

Provided is a method for producing an optical resin composition which is suppressed in coloring and has sufficiently low water absorption. This method for producing an optical resin composition comprises heat treating a fluorine-containing polymer, which is obtained by polymerizing a monomer group containing a fluorine-containing compound having a carbon-carbon double bond by means of an organic peroxide, in an atmosphere in which the concentration of water vapor is 100 volppm or less. For example, in a method for producing an optical resin composition, a terminal group of a fluorine-containing polymer is thermally decomposed by heat treatment, and a low molecular weight compound resulting from the thermal decomposition is volatilized.

This invention provides polymer particles that exhibit reduced yellowing upon heating. Because the polymer particles of this invention are formulated to have a cumulative percentage of 17% or less of particles with a diameter of 60% or less of the median diameter in a particle size distribution based on particle number, and to keep the number of small-diameter particles in a certain proportion or less, the yellowing of the polymer particles due to heating is reduced. Therefore, these polymer particles can prevent products containing these polymer particles from discoloring due to the yellowing of these polymer particles, and are thus suitable for use in the production of products for optical applications.

The utility model discloses a tea fermentation machine which comprises a box body, a magnetic suction door, a humidity control assembly, a temperature control assembly, a vibration storage assembly and a buffer assembly, the magnetic suction door is rotationally connected to one side of the box body, a handle is arranged on one side of the magnetic suction door, the magnetic suction door is provided with an observation window, the humidity control assembly is arranged on the inner side of the box body and comprises a humidifier and a humidity sensor, the humidifier is arranged on the top of the inner side of the box body, the humidity sensor is arranged on the inner wall of the box body, and the temperature control assembly is arranged on the inner side of the box body. The temperature control assembly comprises electric heating pipes and temperature sensors, the electric heating pipes are arranged on the inner wall of the box body, the temperature sensors are arranged on the two sides of the inner wall of the box body, a damping bin is arranged at the bottom of the box body, the vibration storage assembly is arranged on the inner side of the damping bin, and the buffering assemblies are arranged on the two sides of the vibration storage assembly. Compared with the prior art, the tea leaf stirring device has the advantages that tea leaves can be vibrated up and down to be stirred and can also be rotated and vibrated, and the stirring efficiency is higher and more uniform.

A composition in which L-ergothioneine (EGT) and S-ribosylhomocysteine (SRH) coexist makes it is possible to suppress coloring of the composition. A composition comprising EGT and SRH is prepared in which the content of SRH is reduced.

The invention provides a method for manufacturing optical glass which can inhibit coloring of glass caused by platinum oxidized and dissolved in the glass in the process of melting the glass, has high transmittance on the short wavelength side in visible light, and has improved defoaming property. The manufacturing method of the optical glass is characterized by comprising the following steps: mixing raw materials; and melting the glass without supplying water, wherein the raw material contains a reducing agent.