120results about How to "High pigment content" patented technology

Provided is a process for the preparation of a pigment dispersion which comprises a pigment surface treatment step of introducing at least one hydrophilic dispersibility-providing group onto the surface of a pigment directly and/or with the interposition of a polyvalent group, and a dispersion step of dispersing a surface-treated pigment obtained at the surface treatment step in an aqueous medium, characterized in that the dispersion step involves the dispersion of the surface-treated pigment in admixture with a wetting agent and water and a resin for providing dispersibility and/or fixability is added during and/or after the dispersion step.

The invention relates to a security element for security papers, bank notes, ID cards or the like, having at least one plastic layer on which at least two metal layers of different color are so disposed side by side and on the same side of the plastic layer that the different colors are visually checkable.

The present application provides a porous sintered multicomponent applicator nib and methods of making and using these nibs. The porous nibs are made from sintered plastic particles. These nibs are used with liquid applicators devices, medical devices, writing tools or cosmetic applicators to apply liquids containing high solids or pigments to surfaces such as metal, paper, skin, hair, tissue or a wound.

A colored coating material for a color mirror that includes a film-forming component, a pigment, and a solvent, wherein the pigment, which comprises a calcined inorganic pigment comprising one or more elements or oxides of elements selected from the group consisting of Fe, Mn, Co, Ni, Al, Cr, Ti, Sb, Cu, Si, Zn, Li and P, and has a primary particle average particle size of no more than 0.1 μm, is used in a quantity within a range from 40 to 90% by mass relative to the combined weight of the film-forming component and the pigment.

Disclosed is a water-based pigment ink composition comprising, as colorants, (1) a surface treated pigment having a water-dispersibility imparting group introduced to the surface thereof and (2) a water-dispersible polymer-encapsulated pigment which is a pigment wholly coated with a polymer. The water-based ink composition exhibits good color developability and satisfactory abrasion resistance, causes little blurring, and has excellent storage stability.

The invention discloses an extraction method of roselle red color. The method comprises the steps of selecting materials, drying, smashing, digesting, enzyme treatment, clarifying, concentrating, blending, sterilizing and drying. Compared with the prior art, the method has the advantages that low pigment loss rate is ensured in a raw material drying process, the unit raw material utilization efficiency and pigment extraction rate are increased, the problem of thickness of an extracting solution is solved in a mild way, the stability of pigments in a processing process is ensured, the processing cost is reduced remarkably, and the product quality is enhanced. The method contributes to saving energy and protecting the environment, is friendly to the ecological environment, does not cause any adverse effect, and is a novel processing process which is worthy of popularization for natural plant pigments.

The invention provides a polyvinyl acetal having a degree of acetalization of from 45 to 80 mol %, which is obtained through acetalization of a polyvinyl alcohol having a degree of polymerization of from 30 to 1000 and a degree of hydrolysis of from 80.0 to 99.99 mol % and having a specific amount of an ionic group bonded to the terminal thereof via a sulfido bond. The polyvinyl acetal of the invention is useful for binders for ceramic forming and for binders for ink or paint.

The invention belongs to the technical field of food processing, and discloses a vegetable protein/soybean polysaccharide nano-emulsion embedded with a natural fat-soluble pigment and a preparation method of the vegetable protein/soybean polysaccharide nano-emulsion. The preparation method comprises the following steps: dissolving vegetable acid-soluble protein and soluble soybean polysaccharide into deionized water respectively, stirring for 2 to 3 hours, adjusting the pH values of the stirred solutions I to be 2.0 to 4.0 to obtain a protein stock solution and a polysaccharide stock solution respectively, adding the protein stock solution into the polysaccharide stock solution, mixing to obtain a uniform mixed solution II; dissolving the natural fat-soluble pigment into grease, adding the grease containing the dissolved natural fat-soluble pigment and mogroside into the mixed solution II, and carrying out stirring and homogenizing to obtain an emulsion I; heating the homogenized emulsion I at 80 to 90 DEG C for 0.5 to 1 hour, so as to obtain the vegetable protein/soybean polysaccharide nano-emulsion embedded with the natural fat-soluble pigment. The vegetable protein/soybean polysaccharide nano-emulsion is high in natural pigment content, low in sugar content, small in particle size distribution, and high in stability under an acidic condition, and can be used for development of functional foods and health products.

The invention provides a tobacco natural plant dye, a preparation method, and an application thereof. The tobacco natural plant dye is prepared from fresh tobacco as a raw material, which is washed with a surfactant and is subjected to bio-pretreatment impurity removal to obtain tobacco powder. The tobacco powder is extracted by a water solution or an ethanol water solution, wherein the pH value of the solution is controlled by NaHCO3 or ethylenediamine; the solution is subjected to heating extraction and is filtered to produce a natural dye stock liquid, which is concentrated, solidified and crushed to obtain the tobacco natural plant dye. In the method, tobacco pigments are used as natural dyes in the dyeing and finishing industry. The preparation method is simple and is high-effective. The tobacco natural plant dye can dye cotton, wool, cashmere and the like. Through regulation on a direct dyeing process, a pre-mordant dyeing process or a same-mordant dyeing process and types of mordants, fabrics in brown color, yellow-brown color, light-brown color, yellow color or green color can be produced. The dyed fabric has high color fastness to rubbing, has natural and gentle gloss and significantly improves usage value of tobacco and application value of the fabrics.

A type of water-based paint for rubber products principally contains a type of water-based rubber latex containing a type of vulcanizable rubber acting as a dispersoid; an inorganic pigment and/or an organic pigment; and at least one selected from the group consisting of a vulcanizing agent, a vulcanizing accelerator, and a vulcanizing aid. The type of water-based paint contains no organic solvent, has substantially the same workability and coating properties as those of known paints when the type of paint is applied onto a rubber product, also has high adhesion to rubber products, and is ecologically friendly. The type of paint can be prevented from being transferred to a die during vulcanization.

The present invention is directed to a polymeric pigment dispersant to be used as a grind resin to incorporate pigment into a pigment dispersion for a coating composition. The polymeric pigment dispersant is the reaction product of dipentaerylthritol, hexahydrophthalic anhydride, glycidylneodecanoate, dimethylethanolamine, and polyphosphoric acid. The present invention is also directed to a method of preparing the polymeric pigment dispersant. In this method, the dipentaerythritol and the hexahydrophthalic anhydride are polymerized to form an intermediate compound. Next, an epoxy group of the glycidylneodecanoate reacts with the intermediate compound, and then the dimethylethanolamine salts the intermediate compound. Finally, the polyphosphoric acid is added to form the completed polymeric pigment dispersant. The polymeric pigment dispersant has improved stability in the pigment dispersion and is utilized for efficient wetting and grinding of the pigment in the pigment dispersion.

The invention relates to a cultivation method for purple sweet potatoes and a method for processing purple sweet potato powder and belongs to the technical fields of sweet potato cultivation and processing. A new cultivation method is obtained by changing the concentration of thiophanate methyl water solution for soaking seeds, sweet potato seedling planting time and density, fertilizer types and consumption, and types and concentration of inhibitors. According to the cultivation method, acre yield of fresh potatoes is more than 2,200kg, the large medium sized tuber rate is higher than 90.3 percent, anthocyanin content is more than 120mg/100g, and starch content is more than 31.1 percent; the yield for preparing the purple sweet potato powder from the purple sweet potatoes harvested by the cultivation method is higher than 41.6 percent. Methods of cooking, mashing, drying and pulverizing are adopted, sweet potatoes are sliced, and the sliced sweet potatoes are blanched, cooled, cooked, mashed, dried, pulverized and screened to form the purple sweet potato powder, the defect of poor cluster caused by improper color protection in the traditional process is overcome, and the processed product is bright in color, high in dispersibility and high in water absorption.

The invention discloses a germination accelerating and seedling raising method for hyacinth bean seeds. The method comprises the following steps: 1, pretreating hyacinth bean seeds; 2, preparing a nutrient soaking solution; 3, soaking seeds; 4, preparing a seed coating specially used for hyacinth bean; 5, treating hyacinth beans with the seed coating; 6, accelerating germination; 7, disinfecting bud seeds; 8, preparing a nursery substrate; and 9, transplanting and raising seedlings. According to the method disclosed by the invention, the emergence rate is high, the seed germination rate is high, and due to pretreatment of the hyacinth bean seeds, preparation of the seed soaking solution and coating of the seed coating, an excellent germination and seedling growth microenvironment is provided for the hyacinth bean seeds, and the virus resistance, mold resistance and drought resistance of the seeds are obviously improved, so that the germinative force and seed vigor are obviously improved, and heights of the seedlings are increased. Therefore, the seedling resistance is enhanced, the leaves are dark green due to increase of pigment content, the cost is reduced, a powerful guarantee is provided for large-scale cultivation, and the germination accelerating and seedling raising method has excellent practical value and excellent application prospects.