487results about How to "Good chroma" patented technology

A benzanthracene derivative having hydrogen atom at the 12-position, and an organic electroluminescence device having an organic thin film layer, which has one layer or a plurality of layers including at least a light emitting layer, is disposed between a cathode and an anode and contains the benzanthracene derivative in at least one layer in the organic thin film layer singly or as a component of a mixture. The electroluminescence device provides a great efficiency of light emission, has a long life and exhibits an excellent chromaticity.

Provided are a toner containing at least a binder resin and a colorant, the toner having a specific hue angle and an absorbance at a specific wavelength in reflectance spectrophotometry, and a full-color image-forming method involving the use of the toner, the method including the steps of: forming an electrostatic image on a charged electrostatic image bearing member; developing the formed electrostatic image with the toner to form a toner image; transferring the formed toner image onto a transfer material; and fixing the transferred toner image to the transfer material to form a fixed image.

The invention discloses an underwater image enhancement method in combination with bilateral filtering and Retinex. The method comprises the steps of converting an RGB color space of an input image toan HSV color space; for a brightness component, filtering image noises in combination with the bilateral filtering, and separating out a reflective component and an irradiation component based on Gaussian center surrounding multi-scale Retinex for the denoised brightness component; for the separated irradiation component, adjusting illumination by adopting gamma correction to obtain a new irradiation component; realizing fusion enhancement of the irradiation component and the reflective component based on a Retinex theory, thereby obtaining a brightness component after non-uniform illumination correction; recombining the enhanced brightness component with a hue component and a saturation component, and converting the HSV color space to the RGB color space; calculating grayscale value ratios of red and green channels to a blue channel, and remapping the grayscale values of the three channels; and finally performing histogram equalization on the R, G and B channels of the image to realize image contrast enhancement. According to the method, the blue and green color deviation of the underwater image is effectively eliminated, so that the image contrast is improved; and the partial image noises are filtered, so that the signal-noise ratio of the image is increased.

An inkjet ink including water; a particulate pigment; a dispersant; and an emulsion, wherein the particulate pigment has an average particle diameter (D50) not greater than 100 nm, and the standard deviation of particle diameter distribution of the particulate pigment is less than one half of the average particle diameter (D50). An inkjet cartridge containing the inkjet ink. An inkjet recording apparatus including the inkjet cartridge and a carriage configured to carry the ink cartridge. An inkjet recording method including discharging the inkjet ink from a nozzle of a recording head to form an ink image on a recording paper. An image formed on a recording material in accordance with the inkjet recording method.

The invention discloses a blue light organic electroluminescence device. The device comprises a pair of electrodes and an organic luminous medium layer arranged between the electrodes, wherein the organic luminous medium layer at least comprises a luminous layer and an electron transmission layer, the luminous layer comprises a host material and a guest material, the hole mobility of the guest material is 10<-3>--10<-6>cm<2>V<-1>s<-1>, and the hole mobility of the guest material is 1 to 3 magnitude orders greater than electron mobility; the electron mobility of the electron transmission material is more than or equal to 10<-4>cm<2>V<-1>s<-1>; and the energy gap (Eg) of the guest material is 2.82-2.53eV. The organic electroluminescence device has the advantages of high efficiency, good chromaticity and long service life.

The present invention is drawn to dye sets for formulating ink-jet ink sets, and to specific ink sets. The dye set can comprise cyan colorant including a phthalocyanine dye; magenta colorant including a copper- or nickel-containing azo dye; and yellow colorant including at least one of Yellow 1189 dye and Yellow 104 dye yellow colorant having the structure Formula 1:

wherein R₁ is H, SO₃M, COOM, or SO₂NH₂; and wherein R₂ is H, SO₃M, COOM, or SO₂NH₂; and wherein R₃ is H or CH₃; and wherein n and m are 2, 3, 4, 5 or 6; and wherein M is H, Na, Li, K, ammonium, ammonium substituted with alkyl or combinations thereof. Optionally, a cyan triarylmethine dye such as Acid Blue 9, or another similar cyan dye, can be blended with the phthalocyanine dye; a rhodamine dye can be blended with the copper- or nickel-containing azo dye; and/or Acid Yellow 17 or Acid Yellow 23 can be blended with Formula 1.

The invention discloses a method for preparing hydrogenated C9 petroleum resin, and belongs to the technical field of resin hydrogenation. A Ni/ZnO catalyst serves as a hydrogenation adsorption desulfurization catalyst, a supported metal catalyst serves as a hydrogenation decoloration catalyst, the resin is hydrogenated in a two-section fixed bed continuous hydrogenation mode, and due to the application of the Ni/ZnO hydrogenation adsorption desulfurization catalyst, the service life of the supported metal catalyst is guaranteed. The hue of the prepared hydrogenated resin is improved to be water white, and good heat stability is achieved. The method has the advantages that the process is simple, the activity of the catalysts is high, the chromaticity of the resin is improved, the heat stability of the resin is improved, the softening point is slightly reduced, and good economic benefits and industrial application prospects are achieved.

The invention relates to an oxidative hair dye composition for keratin fibers, comprising fatty component, thickener and dye precursor. Provided is a ready-to-use composition for the oxidation dyeing of keratin fibers, and for example of human keratin fibers such as the hair, comprising, A) at least one fatty substance other than fatty acids present in the ready-to-use composition in an amount ofgreater than or equal to 25% by weight relative to the total weight of the ready-to-use composition, B) at least one polymeric thickener, C) at least one dye precursor, D) at least one oxidizing agent and E) at least one alkaline agent wherein at least one of the at least one alkaline agent is an organic amine. The inventive composition is characterized by the improved dying performance.

The present invention describes the use of red, green and, if necessary, blue dopants dispersed in a universal host material as the active emitting layer in OLEDs. The universal host is transparent in the visible region, and may be emissive in the blue region when used as the blue emitting species or possesses carrier transport properties. By dispersing the dopants in the universal host, efficient energy transfer from host to guest and/or direct carrier recombination on the dopant takes place resulting in bright red, green or blue emission, depending on the dopant. The resulting spectra are characteristic of the guest molecules.

The invention belongs to the field of photocuring materials and relates to a clean production method of alkoxylation glycerol triacrylate. The method comprises the following steps that: (1) ethoxylation glycerol/propoxylation glycerol, acrylic acid, catalysts, solvents, polymerization inhibitors and antioxidants are subjected to esterification backflow dehydration; (2) soda flakes and a small quantity of water are added for neutralization; (3) magnesium polysilicate absorbing agents are added for absorbing salt generated during the neutralization; (4) the pressure reduction dehydration is carried out, and solvents are removed; (5) press filtering is carried out, and the magnesium polysilicate and the salt absorbed by the magnesium polysilicate are filtered away; (6) alkaline calcium bentonite and calcium bentonite are added, and decoloration, trace moisture removal and trace acid removal are carried out; (7) press filtering is carried out; and (8) product index detection is carried out. The method belongs to the high-yield clean production method of the ethoxylation glycerol triacrylate and propoxylation glycerol triacrylate and has the advantages that economic benefits and environment benefits are realized, and the problem of organic waste water pollution in the production process of the ethoxylation glycerol triacrylate and the propoxylation glycerol triacrylate is fundamentally solved.

Colorants having pigment and dye components having improved chroma and good water and lightfastness are disclosed and described. A polymeric colorant can include a pigment having a polymer covalently attached thereto and a dye covalently attached to the polymer. A dispersant can be covalently attached to at least one of the pigment, the polymer, and the dye. By including both a pigment and a dye component in the polymeric colorant, improved chroma, waterfastness, and lightfastness can be realized. The dye and pigment components can be substantially the same color, or can have different colors, depending on the desired appearance. The polymeric colorants of the present invention are well suited to inclusion in ink-jet compositions, although many other applications are considered suitable for the instant polymeric colorants.

The invention relates to a process for preparing multifunctional (methyl) acrylate, which can be widely applied in the fields of radiation solidified paint, printing ink, adhesive and polymer modification. The preparation comprises using mixed entrainer, subjecting the crude product to post-treatment and purification. The obtained product has a yield of greater than 95%, a purity above 99%, and a chromaticity (APHA) lower then 20.

The invention discloses a fluidized bed processing device of printing and dyeing waste water, comprising an anaerobic fluidized bed reactor and an aerobic fluidized bed reactor, wherein circularly flowing microorganism carriers are respectively introduced to the anaerobic and the aerobic fluidized bed reactors, and then the effect of high-efficiently removing azo dyes with difficult degradation is achieved by utilizing an aerobic and anaerobic combined processing technology. The fluidized bed processing device successfully solves the technical problem of easy blockage of the conventional fluidized bed. Compared with the common activated sludge process, the fluidized bed processing device has the advantages of compact and simple structure, small land occupation, high chroma and CODCr removing rate, good quality of discharged water, dynamic and continuous processing and the like.

The invention which belongs to the light-cured material field relates to a clean production method of DPGDA or TPGDA. The method concretely comprises the following steps: 1, carrying out esterification reflux dehydration on dipropylene glycol/tripropylene glycol, acrylic acid, a catalyst, a solvent, a polymerization inhibitor and an antioxidant; 2, adding sodium hydroxide and a small amount of water to neutralize; 3, adding a magnesium polysilicate adsorbent to adsorb a salt generated through neutralization; 4, carrying out reduced pressure dehydration and desolventization; 5, press-filtering to filter out magnesium polysilicate and the salt absorbed thereby; 6, adding alkaline calcium bentonit and calcium oxide to decolor, remove trace water and remove trace acids; 7, press-filtering; and 8, carrying out product index detection. The clean production method of the DPGDA or the TPGDA of the invention, which has the advantages of high yield, economic benefit possessing and environmental benefit possessing, fundamentally solves an organic wastewater pollution problem in the production process of the DPGDA or the TPGDA.

The present invention provides a green photosensitive resin composition capable of forming a pattern with excellent linearity, a photosensitive transfer material using the composition, a color filter substrate having good chroma and high color purity, and a color filter substrate having the color filter. display device on a chip substrate. The present invention provides a method characterized in that it contains at least a pigment, a pigment dispersant, a binder, a photopolymerizable compound, and a photopolymerization initiator, at least one of the pigments is a compound represented by the following general formula, and the pigment dispersant A green photosensitive resin composition in which at least one amino group-containing compound is used, a photosensitive transfer material produced using the composition, a color filter substrate using the material, and a display device equipped with the color filter substrate. (In the formula, M represents a specified metal atom. X ₁ ~X ₁₆ Any 8-16 positions in the formula are represented by halogen atoms, and the rest are represented by hydrogen atoms. Y represents a fluorine atom, a chlorine atom, a bromine atom, an iodine atom or an oxygen atom, and m represents an integer of 0 to 2).