149results about How to "Good Photochromic Properties" patented technology

A photochromic naphthopyran displays good color distribution when the naphthopyran has a central nucleus of the formula:

• • wherein F is a 5-member, 6-member, or 7-member heterocyclic ring group having only one heteroatom, the heteroatom selected from the group consisting of oxygen, sulfur, and nitrogen, the 2,3 or 3,2 positions of the heterocyclic ring fused to the g, h, or i side;
  • R₁ and R₂ are the atoms or groups providing photochromic properties to the naphthopyran.

Provided is a method for producing a photochromic optical article having a photochromic coating layer exhibiting photochromism formed on an optical base such as a plastic lens which has good optical characteristics and photochromic characteristics, and also has good adhesion between the base and the photochromic layer. The method enables to easily produce such a photochromic optical article by improving wettability of a photochromic coating agent for a primer. In this method, the photochromic optical article is produced by forming a primer layer on the optical base surface by coating a primer comprising an emulsion which has a colloidally dispersed urethane resin in a dispersion medium, and then forming on the primer layer.

A curable composition comprising (1) 0.1 to 20 parts by weight of a silicon compound having a silanol group or a functional group for forming a silanol group upon hydrolysis and no radically polymerizable group, such as γ-glycidoxypropyltrimethoxysilane, (2) 100 parts by weight of radically polymerizable monomers and (3) 0.01 to 20 parts by weight of a photochromic compound, wherein the radically polymerizable monomers include a radically polymerizable monomer having an epoxy group in the molecule, such as glycidyl methacrylate. This curable composition is capable of forming a photochromic coating layer which shows excellent photochromic properties such as high color development density and fast fading rate, is free from the dissolution of the photochromic compound, exhibits high adhesion to a substrate through a simple pre-treatment and has excellent hard coating applicability.

A photochromic curable composition comprising 100 parts by mass of polymerizable monomers which include 70 to 100 mass % of polymerizable monomers having two to four (meth)acrylic groups and 0 to 30 mass % of a polymerizable monomer having one (meth)acrylic group and 0.01 to 20 parts by mass of a photochromic compound, wherein

• • the number of moles of the methacrylic group existent in the polymerizable monomer composition is 3 to 7 times the number of moles of the acrylic group. This composition can provide a lens having a photochromic coating which exhibits excellent photochromic properties, comprises a hard coat layer having sufficiently high adhesion and scratch resistance and has no delay in fading and has excellent storage stability.

A photochromic cured product exhibiting favorable photochromic properties such as a high color density and a large fading rate, and excellent base member properties such as a high hardness, a high heat resistance and a high impact resistance. A curable composition contains a polymerizable monomer which exhibits the L-scale Rockwell hardness of not larger than 40, a bifunctional polymerizable monomer which exhibits the L-scale Rockwell hardness of not smaller than 60, a polyfunctional polymerizable monomer which exhibits the L-scale Rockwell hardness of not smaller than 60, and a photochromic compound.

The present invention relates to a photochromic acrylic polyurethane varnish and a preparation method thereof, and belongs to the technical field of functional coating. The method comprises steps of: preparing a varnish from In 1, 3, 3- trimethyl-3H-spiroindolinonaphthoxazine, hydroxy acrylic resin, high hydroxy saturated polyester resin, urea / carbamic acid ester liquid thixotropic agent, acrylic leveling agent and organosilicone leveling agent; filtering out the materials or filtering out the materials and diluting by butyl acetate solvent; and preparing the paint and curing agent component cyclohexane diisocyanate trimer into the photochromic acrylic polyurethane varnish according to formula proportion. The photochromic acrylic polyurethane varnish provided by the invention has wide application value and development prospect.

A photochromic laminate comprising a base material of a thermoplastic resin having light-transmitting property, a crosslinked resin layer formed on the surfaces of the base material and containing inorganic colloidal particles in an amount of 20 to 40% by mass, and a photochromic coating formed on the surfaces of the crosslinked resin layer. Though the laminate has the layer exhibiting photochromic property formed thereon by the coating method, the surfaces of the base material of a thermoplastic resin are suppressed from being whitened or swollen. Therefore, the base material exhibits excellent optical properties, a high adhesiveness to the photochromic coating, and superior durability.

There is provided a coating composition which can be applied to a substrate such as a plastic lens so as to form a photochromic coating layer having good photochromic properties and excellent adhesion to the substrate on the surface of the substrate. This composition comprises, for example, as monomer components, 0.1 to 20 wt % of monomer having a group which produces a silanol group through hydrolysis such as γ-methacryloyloxypropyltrimethoxysilane and 0.1 to 50 wt % of monomer having at least one oxycarbonyl group in a molecule. The composition can further contain a maleimide compound as a monomer component and further desirably contains an amine compound.

The invention relates to a photochromic viscose fiber and a preparation method thereof, belonging to the technical field of textile. The photochromic viscose fiber is prepared from an adhesive, photochromic microcapsules and a fiber reinforced agent, wherein the content of the photochromic microcapsules is 1-20wt%, and the content of the fiber reinforced agent is 0.1-10wt%. The preparation method of the photochromic viscose fiber comprises the following steps: (1) dissolving the photochromic microcapsules and the fiber reinforced agent into water to form dispersed viscose emulsion; (2) feeding the dispersed viscose emulsion into viscose to be spun, and mixing; (3) molding by spinning in an acid bath to obtain a photochromic viscose fiber product. The photochromic viscose fiber is simple and reasonable in components and simple in preparation method; the obtained fiber is uniform in whole color change; the strength of the photochromic viscose fiber reaches or exceeds that of the conventional viscose fiber, so that the demand of fabric manufacture can be met.

This invention discloses the fluoric poly-imides resin and its preparation method, as well as its application. It relates to the azobenzene photochromic compounds and its preparation technology. Using two different anhydrides, the fluoric poly-imides resin whose amidation principal chain accompanied with active hydroxyl was synthesized firstly, then catenated DR1 to the side chain skeleton of the fluoric poly-imides resin. So the poly-imides resin with azobenzene side chain was obtained. The polymer obtained by this invention has the good performance of heat-staple and workability, and has the similitude photochromic action with monomer. The poly-imides resin has the widespread application prospect in the aspect of optical information storage.

The invention discloses a photochromic bi-thiophene six-sugar water-solubility symmetrical octafluorocyclopentene compound and a synthetic method and a purpose thereof. A photochromic material can maintain good photochromic performance in solutions or films, the superior performance of a high cyclizing quantum yield, good sensitivity and the like is achieved in a open-loop state (a colorless state) and a closed-loop state (a color generation state), the open-loop state has strong fluorescent light occurs in a 350-550 nm range, luminance of the fluorescent light is reduced along with increasing of ultraviolet light emission time, and the closed-loop state has no fluorescent light, so the compound can be used for fluorescence detection and fluorescence light-operated switches. Compared with symmetrical thiophene or benzo thiophene type octafluorocyclopentene materials, the compound is low in cost of prepared materials and wide in application prospect.

The invention discloses photochromic glass with a high elasticity modulus. The photochromic glass comprises the following components in percentage by weight: 2-8% of Li2O, 15-24% of Al2O3, 0-7% of B2O3, 50-72% of SiO2, 0-8% of K2O, 0-4% of MgO, 0-1% of CaO, 0-15% of Na2O and 0.5-8% of WO3; and the photochromic glass is prepared according to the following steps: preparing materials: preparing the glass raw materials according to the above components; performing mixing and ball milling: loading the prepared glass raw materials into a ball mill, and performing full mixing and ball milling; performing melting: melting the milled glass raw materials in a smelting furnace, and enabling the glass material liquid to be clarified and uniform; performing forming: pouring the glass material liquid into a mold for forming; and performing annealing: placing the formed glass sample into an annealing furnace, and performing annealing to finally obtain the photochromic glass with the high elasticity modulus. The prepared photochromic glass provided by the invention has the characteristics of the high elasticity modulus, excellent color developing effects, fast color change response time, low costs, simple and convenient manufacture and the like.

A polymerizable composition for optical materials of the present invention includes a polyisocyanate compound (A), a polyol compound (B) represented by the following General Formula (1) having a number average molecular weight of 100 or more, a di- or higher functional active hydrogen compound (C) (here, the compound (B) is excluded), and a photochromic compound (D).

The invention discloses a preparation method of a thorn-ball photochromic MoO3 thin film. The preparation method comprises the following steps: (1) preparing a 0.05-3mol/L molybdate liquor; (2) adding a formaldehyde liquor to the molybdate liquor, adjusting the pH of the liquor by a pH adjustor to 0.8-1.5, and stirring and homogenizing in dark light; (3) transferring the homogenized reaction liquor to a reaction container, and placing a clean transparent conductive oxide crystal substrate for hydrothermal reaction; (4) after hydrothermal reaction, cooling to reaction system to room temperature, taking out the crystal substrate plated with film from the container for hydrothermal reaction, and washing with water and alcohol and drying to prepare the thorn-ball photochromic MoO3 thin film. The MoO3 thin film prepared by the invention can generate a good photochromic effect under a condition of a low power excitation light source, and the photochromic performance of the MoO3 thin film is improved.

The invention discloses a photochromic ceramic tile and a preparation method thereof. The preparation method comprises the steps of: A, preparation of ground glaze: by mass percentage, mixing 30-35% of frit, 3-7% of a functional agent, 20-28% of lithium porcelain stone, 5-10% of zirconium silicate, 20-25% of kaolin and 10-12% of quartz evenly, conducting wet ball-milling, and performing sieving to obtain slurry ground glaze; B, preparation of surface glaze: by mass percentage, mixing 70-80% of frit, 1-4% of conductive powder, 10-20% of kaolin, 5-8% of alumina, 1-2% of zinc oxide and 1-5% of zirconium silicate evenly, performing wet ball-milling, and conducting sieving so as to obtain slurry surface glaze; and C, applying the ground glaze and surface glaze prepared by step A and step B respectively to a tile blank in order, and performing firing so as to obtain the ceramic tile. Compared with the existing ceramic tiles, the ceramic tile prepared by the method provided by the invention has the characteristics of scientific compounding, reasonable preparation and stable performance. Also through reasonable collocation with conductive powder, photochromic compounds and antibacterial powder, the ceramic tile has excellent antibacterial, antistatic and photochromic properties, thus further broadening the application scope of ceramic tiles.