123 results about "Optical brightener" patented technology

The invention relates to a fluorescent whitening agent, in particular to a stilbene biphenyl fluorescent whitening agent and a preparation method thereof. The stilbene biphenyl fluorescent whitening agent is a crystal represented by a formula (1), and contains crystal water or an isomer. The fluorescent whitening agent CBS provided by the invention comprises rod-shaped, needle-shaped and lamellar crystal forms. In the invention, all crystal forms are measured by adopting an X-ray diffractometer, and the water content is precisely measured by adopting a KarlFischer titration method. The X-ray scanning spectrum peak attributions of the crystal samples obtained by different preparation methods have significant difference. # imgabs0 #

The present disclosure provides a detergent composition comprising about 10 to about 25 wt % water, about 20 to about 40 wt % of at least one surfactant, and about 30 to about 60 wt % of a non-aqueous solvent comprising glycerin and a non-reducing sugar, wherein the water activity is less than 0.8, and the detergent composition has a pH of about 8 to 11. The detergent composition can further comprise additional components, such as an acid, a base, an enzyme, an anti-redeposition agent, a performance polymer, a defoamer, a chelating agent, a chlorine scavenger, an optical brightener, a corrosion inhibitor, and any combination thereof. The detergent composition comprises surfactants with improved mildness and self sustaining solvents with reduced allergic components.

The invention discloses a fluorescent whitening agent with high dispersion stability, a preparation method and an application method, and belongs to the technical field of textile printing and dyeing. The invention introduces a fluorescent whitening agent with the characteristics of small particle size, high stability, strong whitening ability and the like. The fluorescent whitening agent is a dispersion liquid composed of a whitening agent filter cake, a dispersing agent, a solvent, a thickening agent, water and the like. The whitening agent is applied to whitening processing of polyester and blended fabrics thereof, and can show higher whiteness under the condition of lower dosage; and even under the condition that a leveling agent is not added, a uniform whitening effect can be obtained, fluorescent spots or yellow spots are not formed, and high-quality whitened fabric can be obtained.

The invention discloses a spore fluorescent staining solution and application thereof. The fluorescent whitening agent 220 is used for detecting spores; the spore fluorescent staining solution provided by the invention comprises a fluorescent whitening agent 220. The spore fluorescent staining solution disclosed by the invention is simple in component, low in cost, capable of accurately detecting spores in a sample to be detected, low in toxicity and small in influence on the environment; the detection method disclosed by the invention is simple and convenient to operate and rapid in determination and can be completed by one-step operation.

The invention relates to a bright-color gradient-color safety belt and a production process thereof, and relates to the technical field of fabric production processes, and the bright-color gradient-color safety belt comprises a gradient-color woven belt and a color optimization finishing agent, the color optimization finishing agent comprises the following components in parts by mass: 20-30 parts of nano disperse dye, 10-15 parts of an ultraviolet light absorber, 5-10 parts of mesoporous silica, 15-20 parts of a color fixing agent, 5-8 parts of an organic silicon softening agent, 2-4 parts of a fluorescent whitening agent, 1-2 parts of a pH buffering agent and 30-40 parts of a solvent. The production process comprises the following steps: weaving more than two yarns with different colors to obtain a gradient yarn-dyed woven belt; the preparation method comprises the following steps: removing impurities, flattening to obtain a treated braid, padding the treated braid in a color optimization finishing agent, washing with water, fixing color, shaping in cold water, drying after treatment, packaging and storing to obtain the gradient color safety belt with bright color. The gradient color safety belt has the effect of improving the optical performance, the color fastness and the structural stability of the gradient color safety belt, and has a good safety protection function and durability.

Fluorescent whitening agents (FWA) or optical brighteners based on bicyclic heterocyclic compounds (I) and (II) are suitable for use in consumer products: Wherein the variables are as defined in claim

The present disclosure provides a detergent composition comprising about 20 to about 35 wt % water, about 20 to about 40 wt % of at least one surfactant, about 25 to about 45 wt % of a non-aqueous solvent comprising glycerin, and at least one enzyme, wherein the water activity is less than 0.8, and the detergent composition has a pH of about 5 to 7.7. The detergent composition can further comprise additional components, such as a base, a performance polymer, an anti-redeposition agent, a chelating agent, an optical brightener, a corrosion inhibitor, or any combination thereof. The detergent composition comprises surfactants with improved mildness and solvents with reduced allergic components.

A UV / HEVL filterable SiHy contact lens is described herein that not only has a relatively high UV / HEVL filterability but also has an aesthetically attractive color. Bulk siloxane hydrogels for UV / HEVL filterable SiHy contact lenses comprise repeating units of (1) at least one hydrophilic ethylene monomer, (2) at least one siloxane-containing ethylene monomer and / or at least one polysiloxane ethylene crosslinking agent, (3) at least one UV-absorbing ethylene monomer, (4) at least one crosslinking agent, and (5) at least one crosslinking agent. And (4) at least one polymerizable HEVL-absorbing compound capable of absorbing HEVL between 380 nm and 450 nm, and further comprising at least one blue colorant and at least one optical brightener distributed in the bulk siloxane hydrogel.

The utility model discloses a granulating mechanism for processing a water-soluble polymerization type fluorescent whitening agent, which relates to the technical field of fluorescent whitening agent processing and comprises a support, a post-processing mechanism is fixedly mounted at the front end of the support and comprises a driving component, a mounting frame, a water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water-soluble polymerization type water A motor is fixedly mounted on the front wall of the mounting frame and enables a first bevel gear to rotate through a transmission shaft, an n-shaped rod is connected to the axis position of the first bevel gear, a connecting shaft rotationally connected with the inner wall of the mounting frame is fixed to the other end of the n-shaped rod, and a movable shaft rod is rotationally connected to the top end of the n-shaped rod. The screening and filtering assembly is arranged on the inner side of the support and used for screening fluorescent whitening agent particles, and the problems that in the prior art, although some devices capable of conducting screening treatment exist, the screening technology and the drying technology are mostly separated, the processing period is long, and the device cost is high are solved.

The invention discloses a preparation method of a thin coating type protective adhesive, the thin coating type protective adhesive and a protective film. The preparation method comprises the following steps: (1) pre-dispersing 0.1-1 part by mass of nano fumed silica, 0.1-0.5 part by mass of a fluorescent whitening agent and 50-80 parts by mass of solvent oil; and (2) sequentially adding 0.01 to 0.04 part by mass of a platinum catalyst, 2 to 7 parts by mass of vinyl-polyhedral oligomeric silsesquioxane and 20 to 50 parts by mass of hydrogen-terminated silicone oil. According to the scheme, the ultrathin coating can be formed while the surfaces, corners, curved surfaces and welding spots of components are completely covered, and the hydrophobic performance, the insulating performance, the environmental protection performance and the safety performance of the coating are effectively ensured.

The utility model relates to the technical field of chemical equipment, and discloses a fluorescent whitening agent crystallization kettle temperature control device which comprises a stirring mechanism, and a cooling mechanism is arranged on the right side of the stirring mechanism; the stirring mechanism comprises a crystallization kettle body, a rotating rod is rotatably connected to the interior of the crystallization kettle body, a motor is fixedly connected to the top of the rotating rod, a connecting ring is fixedly connected to the outer side of the rotating rod, stirring blades are fixedly connected to the outer side of the connecting ring, and connecting rods are fixedly connected to the left side and the right side of the rotating rod; the outer side of the connecting rod is fixedly connected with a supporting ring, and the outer side of the supporting ring is fixedly connected with a scraping plate and a guide plate. According to the temperature control device for the fluorescent whitening agent crystallization kettle, by arranging the connecting rings and the stirring blades and utilizing the auxiliary effect of the scraping plate and the guide plate, it is guaranteed that fluorescent whitening agent raw materials are evenly mixed and efficiently stirred in the crystallization kettle body, the production efficiency is improved, and raw material waste is reduced.

The invention discloses a degradable plastic quality release and demolding residue traceability management method, and relates to the technical field of quality release traceability, and the method comprises the following steps: 1, doping a fluorescent whitening agent European in a polylactic acid matrix to form an inner channel, attaching a polyvinyl alcohol witness sheet to the edge of a cavity, and presetting riboflavin to form an outer channel, establishing a dual-channel ultraviolet detection position; 2, collecting two paths of intensity, calculating a ratio coefficient, and establishing mapping with surface residues to form red, yellow and green threshold values and a correction list; 3, a workpiece is judged through a black box, spray volume, wind shear and mold temperature instructions are automatically given, a witness piece is separated from warm water and confirmed through a background, and meanwhile a cavity-level demolding event is generated and bound with the digital link two-dimensional bar code; and step four, third-party compliance files are archived in a ticket-folder manner with quantiles as reference to a reconvergence threshold value, so that mold-crossing and line-crossing consistent release and verifiable traceability are realized, and food contact and compostable boundaries are considered. And the release efficiency and stability are improved.

The application discloses a preparation method of a nano TiO2 composite fluorescent whitening agent and relates to the technical field of fluorescent whitening agents. The method comprises the following steps: firstly, one-time condensation is carried out on cyanuric chloride and 4,4'-diamino-stilbene-2,2'-disulfonic acid; secondly, secondary condensation is carried out on diethanolamine, and quaternary ammonium is formed by using epichlorohydrin in the secondary condensation process; finally, tertiary condensation is carried out on amino nanoparticles, so that the nano TiO2 composite fluorescent whitening agent is obtained. The nano TiO2 composite fluorescent whitening agent prepared by the application has the characteristics of good ultraviolet aging resistance and water solubility.

The application discloses a fluorescent whitening functional auxiliary and a production process thereof, and relates to the technical field of functional dyes. The fluorescent whitening functional auxiliary comprises the following raw materials in parts by weight: 35-45 parts of a fluorescent whitening agent, 8-10 parts of gamma-cyclodextrin, 4-6 parts of a pH buffer, 2-3 parts of a dispersing agent, and 50-70 parts of deionized water. In the application, L-cysteine is reacted with 2-methyl-2-propenoic acid-2,2,6,6-tetramethyl-4-piperidyl ester to generate a sulfide compound, 4,4'-diaminostilbene-2,2'-disulfonic acid is reacted with cyanuric chloride to generate a monosubstituted compound, the monosubstituted compound is reacted with 7-hydroxy-4-methylcoumarin to generate a disubstituted compound, and the disubstituted compound is reacted with the sulfide compound to generate the fluorescent whitening agent. The fluorescent whitening functional auxiliary prepared in the application has excellent dispersibility, stability and anti-aging performance.

Use of compounds of formula (II) as fluorescent whitening agents or optical brighteners; wherein the compounds of formula (II) have the structure: wherein Y and R are as defined in claim 1. Also sh

The invention discloses an acid-resistant efficient whitening agent for cotton, which contains 0-20% of a fluorescent whitening agent C.I.220; 0 to 20% of a fluorescent whitening agent C.I.47; 0-70% of anhydrous sodium sulphate; 0 to 0.10% of disperse violet RL; and 0 to 0.10% of disperse blue BGL. The components of the screened whitening agent are two tetrasulfonic acid whitening agents which are compounded, and proper dyes are added, so that the whiteness can be improved by 17 CIE value, the same whiteness or higher whiteness can be achieved by using fewer whitening agents, and the effects of reducing cost and improving efficiency are achieved.

A resin based material whose composition includes a light-curable mixture of monomers of no more than 35 wt. % of an ethoxylated difunctional bisphenol A dimethacrylate; of no more than 10 wt. % of a methacrylate monomer; of no more than 10 wt. % of a difunctional urethane acrylate; of no more than 0.1 wt. % of an optical brightener; of no more than 5 wt. % of silica particles having methacrylate functionalization layers and having an average particle size of less than about 200 nm; of having more than 40 wt. % of an inert glass; of no more than 15 wt. % of a heavy metal oxide; of no more than 2.5 wt. % of an ultraviolet / visible (UV / Vis) light-photo-polymerization initiator; a colorant; and a stabilizer.

This invention belongs to the field of polymer material additives, and provides a fluorescent whitening agent anti-migration stabilizing excipient and its preparation method. The method involves intercalating 4,4'-bis(2-sulfonate sodium styryl)biphenyl into a zinc-aluminum layered double hydroxide, and then surface-coating it with ethanolamine-modified polypropylene grafted with maleic anhydride compatible components. This is followed by melt granulation with a polypropylene carrier resin, bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate, and 2-(2H-benzotriazol-2-yl)-4,6-di-tert-amylphenol. This achieves low migration, high retention, and stable dispersion of the fluorescent whitening agent, solving the problems of easy migration, insufficient thermo-photoaging stability, and difficulty in balancing processing window and toughness in polypropylene systems. This method is suitable for the industrial preparation and application of polypropylene whitening modified materials.

To appropriately set gamma correction characteristics for paper to which a fluorescent whitening agent is added.SOLUTION: The image data acquisition unit 21 acquires first image data obtained by reading the chart on the reference paper and acquires second image data obtained by reading the chart on the target paper. The gradation correction processing unit 22 (a) specifies the gradation characteristic of the target sheet based on the second image data, (b) specifies the correction target range based on the density gradient in the gradation characteristic, and (c) corrects the correction target range in the gradation characteristic of the target sheet based on the gradation characteristic of the reference sheet based on the first image data. The correction characteristic setting unit 23 sets the gamma correction characteristic for the target paper on the basis of the gradation characteristic for the target paper after the correction target range is corrected. The target paper contains a larger amount of the fluorescent brightener than the reference paper.SELECTED DRAWING: Figure 1

A resin based material whose composition includes a light-curable mixture of monomers of no more than 35 wt. % of an ethoxylated difunctional bisphenol A dimethacrylate; of no more than 10 wt. % of a methacrylate monomer; of no more than 10 wt. % of a difunctional urethane acrylate; of no more than 0.1 wt. % of an optical brightener; of no more than 5 wt. % of silica particles having methacrylate functionalization layers and having an average particle size of less than about 200 nm; of having more than 40 wt. % of an inert glass; of no more than 15 wt. % of a heavy metal oxide; of no more than 2.5 wt. % of an ultraviolet / visible (UV / Vis) light-photo-polymerization initiator; a colorant; and a stabilizer.

The utility model discloses a fluorescent whitening agent synthetic device convenient to discharge, including synthetic cylinder, the bottom of synthetic cylinder is conically arranged, the bottom center of synthetic cylinder is fixedly connected with the discharge cylinder perpendicularly, and the inner wall of synthetic cylinder is sleeved with the fixed ring, and the inside center of synthetic cylinder is fixedly connected with the inner tube perpendicularly, and the inner tube is arranged at the bottom of fixed ring, and the inner tube is rotatably connected with the auger, and the auger is arranged in the inner portion of discharge cylinder, and the rotating mechanism of rotating auger is arranged in the inner portion of synthetic cylinder, and the stirring mechanism is arranged in the inner portion of synthetic cylinder, and the outer surface of synthetic cylinder is sleeved with the support ring, and the surface of support ring is fixedly connected with a plurality of support legs perpendicularly. The utility model discloses a setting, can be convenient for the material that needs mixing in the inside of synthetic cylinder to be transported upward through the inner tube when using, is convenient for the inside of synthetic cylinder to turn over material, and the setting of two stirring rods is also matched, and the mixing effect of material is also improved, and the auger reverse rotation is also convenient for the material in the inside of synthetic cylinder to be discharged.

The invention discloses an amino coumarin fluorescent whitening agent, the molecular structural formula of which is shown in the specification, n is a positive integer not more than 10, and m is a positive integer not more than 20. The amino coumarin type fluorescent whitening agent prepared by the method has the advantages of cheap raw materials, simple synthesis operation, mild reaction conditions, no need of harsh conditions such as water-free and oxygen-free conditions, and high total yield. The synthesized amino coumarin derivative has proper fluorescence characteristics, can be used as a fluorescent whitening agent for treating polyethylene plastics, and can achieve a whitening effect. When the amino coumarin derivative is applied to whitening, the special effect is that the derivative has good compatibility with polyethylene, and can chemically react with polyethylene, so that the derivative is combined with polyethylene in a firm covalent bond form, and migration of a fluorescent whitening agent is difficult to occur.

This invention belongs to the field of functional polymer masterbatches and provides a highly concentrated fluorescent whitening agent masterbatch and its preparation method. The invention involves melting and wetting fluorescent whitening agent OB-1 with a polyethylene-acrylic acid copolymer to form composite microparticles, which are then melt-dispersed and granulated with polyethylene wax, a composite antioxidant system, and a carrier resin composed of polyethylene or a combination of polyethylene and ethylene-vinyl acetate copolymer. This constructs a high-content, fine-particle-size, and uniformly distributed granular masterbatch system, achieving a coordinated improvement in OB-1 dispersion stability, retention of effective whitening components, melt processing flow, and thermal processing stability. It reduces the proportion of free crystals, agglomeration degree, fuming, and agglomeration risks, solving the problem of balancing dispersion stability and whitening performance, as well as processing flow and thermal stability in highly concentrated whitening masterbatches. This invention is suitable for whitening processing of modified plastics, recycled plastics, and polyolefin products.

A photoinitiator package comprising one or more bisacylphosphine oxide photoinitiators, one or more additional acylphosphine oxide photoinitiators and one or more optical brightening sensitizers, a photopolymerizable composition comprising the photoinitiator package and suitable polymerizable compounds, a method for polymerizing the photopolymerizable composition and the use of the photoinitiator package in photopolymerization applications.

The utility model discloses a processing device for a water-soluble yellow-inhibiting fluorescent whitening agent, which comprises a reaction kettle main body, and a main feeding hole and an auxiliary feeding hole which are used for discharging a water-soluble yellow-inhibiting fluorescent whitening agent raw material into the reaction kettle main body are respectively formed in two sides of the upper end of the reaction kettle main body; a stirring motor is fixedly mounted at the top end of the upper end of the reaction kettle main body in a penetrating manner, a stirring shaft is fixedly mounted on a transmission shaft part at the lower end of the stirring motor, and a stirring paddle for mixing and stirring the water-soluble yellow-inhibiting fluorescent whitening agent in the reaction kettle main body is fixedly mounted at the bottom of the stirring shaft; the bottom of the reaction kettle main body is communicated and fixedly provided with a discharge pipe for discharging the water-soluble yellow-inhibiting fluorescent whitening agent raw materials which are mixed and reacted in the reaction kettle main body. According to the reaction kettle disclosed by the utility model, a water-soluble yellow-inhibiting fluorescent whitening agent in the reaction kettle main body is mixed and stirred for reaction, and meanwhile, the temperature in the reaction kettle main body is convenient to adjust.

The invention relates to high-reflectivity ink with yellowing resistance, which is composed of a main agent and a curing agent, the main agent and the curing agent are in a mass ratio of (2-4): 1, the main agent comprises the following components in parts by weight: 27-40 parts of acrylic resin, 30-40 parts of titanium dioxide, 0.1-1.2 parts of fluorescent whitening agent and 2-4 parts of photoinitiator; the acid value of the acrylic resin composition is 30-50 mgKOH / g, and the acrylic resin is styrene-free copolymerized acrylate resin; the curing agent is prepared from 6.5 to 8 parts of epoxy resin, 3.8 to 4.2 parts of triglycidyl isocyanurate and 0.2 to 0.7 part of melamine.

The present disclosure provides a detergent composition comprising about 10 to about 25 wt % water, about 20 to about 40 wt % of at least one surfactant, and about 30 to about 60 wt % of a non-aqueous solvent comprising glycerin and a non-reducing sugar, wherein the water activity is less than 0.8, and the detergent composition has a pH of about 5 to 7.7. The detergent composition can further comprise additional components, such as a base, a performance polymer, an anti-redeposition agent, an enzyme, a chelating agent, an optical brightener, a corrosion inhibitor, or a combination thereof. The detergent composition comprises surfactants with improved mildness and solvents with reduced allergic components.

The utility model relates to the technical field of fluorescent whitening agent production, in particular to crystal membrane separation equipment for producing a fluorescent whitening agent, which comprises a reaction cylinder, a hollow shaft is movably connected to the top of the reaction cylinder in a penetrating manner, a plurality of uniformly distributed stirring rods are fixed on the outer wall of the hollow shaft, and the stirring rods are positioned in the reaction cylinder. A plurality of uniformly distributed electric heating plates are fixed on the inner wall of the reaction cylinder, gas distribution pipes are respectively and fixedly communicated with two sides of the tail end of the hollow shaft, and a plurality of uniformly distributed first gas outlet holes are formed in the upper surfaces of the gas distribution pipes. In the stirring process, the gas distribution pipe can guide out gas through the first gas outlet holes, and then the gas is blown out upwards along the first gas outlet holes, so that not only is the transverse stirring movement of materials realized, but also the gas from bottom to top drives the materials to have a longitudinal movement track, the materials are stirred more sufficiently, and the stirring efficiency is improved. And thus, the crystal membrane separation effect can be improved.

The utility model discloses a fluorescent whitening agent slurry vacuum degassing device of anti -spill, including degassing furnace, and the degassing mechanism includes two first connecting tubes, and the one end of two first connecting tubes is connected with the U type anti -spill pipe of intercommunication, and the other end of two U type anti -spill pipes is connected with the second connecting tube of intercommunication, and the other end of two second connecting tubes is located inside the bottom of degassing furnace, and the top of degassing furnace is fixed with the conical cover, and the inner wall bottom of conical cover is fixed with the sealing plate, and the top of sealing plate is installed with vacuum pump, and the air inlet end of vacuum pump is connected with the duct of intercommunication, and the other end of duct is located inside the top of degassing furnace. The utility model has formed good sealing effect in the process of degassing, improved the efficiency of degassing, and improved the quality of fluorescent whitening agent slurry, and sealing effect avoided the outside air backwash, maintained the stable vacuum environment in the degassing furnace, reduced the equipment operation failure caused by the pressure fluctuation.

The utility model relates to the field of fluorescent whitening agent production technology discloses a fluorescent whitening agent high temperature high pressure synthetic device with monitoring mechanism, including the reaction kettle, the reaction kettle outer wall bottom fixedly equipped with heating sleeve, heating sleeve top one side is provided with the oil inlet pipe, heating sleeve bottom is provided with the oil outlet pipe, and the oil outlet pipe is uniformly fixedly installed with the valve on the oil inlet pipe, heating sleeve bottom circumference equidistance fixedly connected with three support legs, heating sleeve outer wall one side is fixedly connected with the mounting bracket, and the mounting bracket outside is fixedly connected with the copper plate, and the copper plate outside is fixedly connected with the semiconductor refrigeration plate, and the one side of semiconductor refrigeration plate close copper plate is the refrigeration surface. The utility model, realized can fast the reaction kettle inside temperature and maintain in stable state, avoid because temperature abnormal heightening influence fluorescent whitening agent production, maintain the reaction kettle operation stability, guarantee equipment safe and reliable operation.