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97 results about "Color additive" patented technology

Under the Federal Food, Drug, and Cosmetic Act (Chapter VII, section 721), color additives, except for coal tar hair dyes, are subject to FDA approval before they may be used in food, drugs, or ...

Spectral color matching to a device-independent color value

Methods, systems, and apparatus for mapping a nonspectral representation of a target color, such as an input color tuple, to a set of concentration values for a set of device-specific colorants. The invention includes using the input color tuple to derive a first set of colorant concentration values from a color lookup table; and refining the first set of colorant concentration values by an iterative non-linear process to generate a final set of colorant concentration values. The first set of colorant concentration values can derived by using an input color tuple as an index to obtain grid-point concentration values at two grid points of the color lookup table and calculating the first set of colorant concentration values as a linear interpolation of the grid-point concentration values. In an implementation that provides a color function table of color-additive function values, the iterative non-linear process can include iteratively (a) calculating an interim color tuple from an interim set of colorant concentration values and the color function table, the initial interim set of colorant concentration values being the first set of colorant concentration values, and (b) deriving an interim set of colorant concentration values from a difference between the input color tuple and the interim color tuple. The calculations can include calculating a partial derivative of an error function from the difference between the input color tuple and the interim color tuple; and using the partial derivative to derive a successor interim set of colorant concentration values from a current interim set of colorant concentration values.
Owner:ADOBE SYST INC

Method for growing blue ceramic film layer in situ on the surface of aluminum alloy and aluminum matrix composite material

The invention discloses a method for in-situ growth of a blue ceramic film layer on the surface of an aluminum alloy and an aluminum-based composite material, relating to a method for preparing a blue ceramic film layer on an aluminum alloy and an aluminum-based composite material. The method solves the problem that the existing micro-arc oxidation method cannot prepare a blue ceramic film layer with uniform color on the surface of aluminum alloy and aluminum-based composite material, and the electrolyte used to prepare the blue ceramic film fails quickly and cannot be used repeatedly. 1. Prepare an electrolyte solution, which contains at least a main film-forming agent and a coloring additive, and the main film-forming agent is one of phosphoric acid, sulfuric acid and citric acid or a combination of several of them; 2. The cleaned aluminum base Fix the material in the electrolyte, turn on the power, and oxidize. The blue CoAl2O4 is evenly distributed in the blue ceramic film layer obtained on the surface of the aluminum substrate, and the blue color is uniform and beautiful. The bonding strength between the ceramic film layer and the aluminum substrate is high, and it has excellent wear resistance, corrosion resistance and heat resistance. The integrated preparation of decorative and structural coatings is realized.
Owner:HARBIN INST OF TECH

Electrolytic coloring liquid of aluminum profile and preparation method, application and application method thereof

The invention discloses electrolytic coloring liquid of an aluminum profile and a preparation method, application and application method thereof and belongs to the technical field of aluminum profile surface treatment. The electrolytic coloring liquid of the aluminum profile is composed of pure sulfuric acid, stannous mono-sulphate, nickel sulfate, coloring additives and water, the mass concentration of the pure sulfuric acid is 15-18 g/L, the mass concentration of the stannous mono-sulphate is 8-12 g/L, the mass concentration of the nickel sulfate is 15-30 g/L, and the mass concentration of the coloring additives is 20-30 g/L; the coloring additives are composed of D-tartaric acid, catechol, boric acid and sulfamic acid, and the coloring additives are composed of, by mass, 30%-40% of the D-tartaric acid, 30%-40% of the catechol, 20%-30% of the boric acid and 5%-10% of the sulfamic acid. By means of the electrolytic coloring liquid of the aluminum profile, a series of bright colors, namely light bronze to dark bronze to black, can be generated, the coloring of the aluminum profile is uniform, bright, little in chromatic aberration and good in reproducibility, a bath solution can keep clear and transparent for a long time, the dispersion capacity of the bath solution is great, the stability of tin ions is high, and the consumption is low.
Owner:马鞍山市华冶铝业有限责任公司

Red coloring agent for low-temperature colored glass, and preparation method and use method thereof

InactiveCN107651834AIncreased diffusion rateHigh stoichiometric ratioDecompositionReaction temperature
The invention belongs to the field of colored glass, and particularly relates to a red coloring agent for low-temperature colored glass, and a preparation method and a use method thereof. The red coloring agent is prepared from the following raw materials in parts by mass: 30 to 50 parts of a quartz powder, 10 to 30 parts of borax, 10 to 25 parts of sodium carbonate and 2 to 30 parts of a coloringadditive, by the steps of mixing the materials, founding at high temperature, performing water quenching and pulverizing, wherein the coloring additive is one of or a mixture of more than one of selenium powder, cuprous oxide and ferric oxide. A large amount of low-melting-point silicon oxide, borax and sodium carbonate are adopted in the coloring agent base material, so that the dispersing speedof the coloring agent in 1200-DEG C glass liquid is greatly enhanced and uniformly colored glass original liquid is formed. In the preparation process of the coloring agent, the composite powder is directly added into a high-temperature frit furnace to perform founding and the reaction temperature is increased from a room temperature to 1350 to 1500 DEG C instantaneously, so that decomposition, volatilization and composition segregation of the materials in the slow heating process are avoided, and a coloring agent product with high stoichiometric ratio and high high-temperature dispersion speed is obtained.
Owner:JIANGSU BAIFU TECH CO LTD

3D printing antibacterial repair dental medical material and preparation method thereof

The present invention relates to the technical field of 3D printing molding materials, particularly to a 3D printing antibacterial repair dental medical material and a preparation method thereof, wherein the 3D printing antibacterial repair dental medical material comprises, by weight, 10-20% of an acrylic monomer, 30-50% of a Bis-GMA resin, 0.3-0.8% of a defoaming agent, 3-5% of an antibacterial agent, 1-3% of an initiator, 1-5% of a color additive, and the balance of silica. According to the present invention, the tooth part printed from the 3D printing antibacterial repair dental medical material has advantages of low cost, high printing precision, good wear resistance and long service life; by selecting the chitosan quaternary ammonium salt, the 3D printing antibacterial repair dental medical material has good biocompatibility and good antibacterial effect, and the disadvantages of sterilization ability reducing, easy adsorption loss, easy drug-resistance generation and the like of the high traditional quaternary ammonium salt having the high mineralization degree can be overcome; and the preparation method has advantages of simple and easy-performing molding method, convenient operation, and wide material source.
Owner:苏州汉力新材料有限公司

Colored esmolol concentrate

A concentrated esmolol formulation is provided that is distinguishable from a diluted form of the concentrated esmolol formulation. In one embodiment, the concentrated esmolol formulation allows identification of the concentrate even after transfer of the concentrate out of a labeled primary container. The concentrated esmolol formulation can include from about 25 to about 1000 mg/ml of esmolol hydrochloride, a buffering agent and a color additive. Any number of color additives may be included such as indocyanine green, phenopheylene, hemoglobin, cyanocobalamine, patent blue, and indigo carmine vitamin B2 and naturally occurring vitamins and minerals. The amount included in the formulation is highly dependent on the color additive selected. The color additive should be included in an amount sufficient to easily distinguish the concentrated esmolol formulation from at least about a 1:4 dilution of the concentrate. Also, a medical product is provided that includes a colored concentrated esmolol housed in a container, and a package housing the container and instructions. The instructions can notify that a color additive has been added to the concentrated esmolol formulation to aid in differentiating it. Additionally a method of allowing easy identification of a concentrated esmolol formulation is provided. The method includes providing a colored concentrated esmolol formulation that has from about 25 to about 1000 mg/ml of esmolol and a color additive.
Owner:BAXTER INT INC +1
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