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41 results about "Lake pigment" patented technology

A lake pigment is a pigment made by precipitating a dye with an inert binder, or "mordant", usually a metallic salt. Unlike vermilion, ultramarine, and other pigments made from ground minerals, lake pigments are organic. Manufacturers and suppliers to artists and industry frequently omit the lake designation in the name. Many lake pigments are fugitive because the dyes involved are not lightfast. Red lakes were particularly important in Renaissance and Baroque paintings; they were often used as translucent glazes to portray the colors of rich fabrics and draperies.

PET (Polyethylene terephthalate) base material used for filter membrane, preparation method as well as filter membrane and display screen comprising PET base material

The invention discloses a PET (polyethylene terephthalate) base material used for a filter membrane, a preparation method as well as the filter membrane and a plasma display screen comprising the PET base material. The PET base material comprises one or more of inorganic pigment, organic pigment and dye, wherein the inorganic pigment is one or more of metallic oxide, sulfide, sulfate, chromate and carbon black; the organic pigment is one or more of azo pigment, phthalocyanine pigment, heterocyclic pigment, lake pigment and fluorescent pigment; and the dye is one or more of pyrazolone derivative, quinophthalone, fluorescent polycyclic ring dye, naphthazarin, benzopyrone, azo, fluorescent reactive dye, anthraquinone reactive dye, picene ketone dye, anthraquinone reactive derivative, fluorescent polycyclic ring and polymethylene dye. A material with a toning function is added into the PET base material, thus the phenomenon that chemical substances in pressure-sensitive adhesive (PSA) react with the material with the toning function to generate the discoloration is avoided, and meanwhile, the plasma screen capable of improving color is obtained.
Owner:SICHUAN COC DISPLAY DEVICES

Environmentally-friendly and bacteriostatic waterborne ink and preparation method thereof

The invention discloses an environmentally-friendly and bacteriostatic waterborne ink and a preparation method thereof. The environmentally-friendly and bacteriostatic waterborne ink comprises the following components by weight: 35 to 75 parts of water-soluble acrylic resin, 15 to 25 parts of an organic pigment, 10 to 20 parts of ethyl alcohol, 15 to 30 parts of deionized water, 0.3 to 1 part of abacteriostatic agent, 1 to 3 parts of a nonionic surfactant and 2 to 4 parts of a filling material and an auxiliary agent, wherein the organic pigment is one or more selected from the group consisting of an azo pigment, a lake pigment, a heterocyclic pigment, a fused ring ketone pigment and a phthalocyanine pigment. The preparation method comprises the following steps: S1, preparation of an A.SAPbacteriostatic agent; S2, weighing and proportioning of raw materials; S3, manufacturing of a pre-slurry; S4, grinding of the pre-slurry; and S5, obtainment of a final product. The environmentally-friendly and bacteriostatic waterborne ink provided by the invention has more scientific and reasonable formula, reduces addition of toxic substances to the greatest extent, has good bacteriostatic andantiseptic effects, can effectively increase the affinity among resin, a pigment and water, and has large market competitiveness.
Owner:清远市承明新材料科技有限公司

Preparation of red pigment for liquid printing ink

The invention relates to a method for preparing a yellow pigment for liquid ink. The method comprises the following steps of : reacting 1 portion of 2-amino-5-toluene sulphonic acid with 0.32 portion of sodium nitrite to form a diazo component in 470 portions of ice water and 1.5 portions of thirty to thirty-two percent hydrochloric acid medium; coupling the diazo component with 1.1 portions of 2- hydroxide-3-naphthoic acid in water medium when the PH value is between eight and ten, filtering the diazo liquid, adding the filtered diazo liquid 2-hydrodxy-3- naphthoic acid slowly with stirring within one hundred and twenty and one hundred and fifty minutes and keeping the temperature between fifteen and twenty DEG C and the PH valve between eight and ten and stirring for hundred and twenty and one hundred and fifty minutes; during post treatment of red pigment, adding 0.3-0.5 portion of metal salt for lake and 0.01-0.05 portion of surface active agent, heating to fifty to eighty DEG C; stirring for thirty to sixty minutes, allowing absolute-SO3H and-COOH to react with metal salt to generate red lake pigment; filtering the pigment, cleaning the pigment with water and conducting routine pigmentation treatment to a filter mass after completion. The preparation method has excellent solvent resistance and storage stability life in polyurethane system ink. The method is simple in technology and remarkable in effect, effectively improving the product quality.
Owner:TIANJIN TOYO INK
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