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Q what is the distinction between dye and pigment colorants
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SheilaField Release Time: April 14, 2024, 2:52 PM
While both dyes and pigment colorants are commonly used to add color to materials. their main distinctions lie in solubility and application method. Dyes. being soluble in water or other solvents. chemically bond with the material to produce vibrant color-changing effects. This property makes them well-suited for coloring fabrics. paper. and plastics. On the other hand. pigments consist of insoluble particles that must be dispersed in a binder or medium in order to adhere to the material’s surface. These particles reflect or absorb light to create color and possess exceptional stability and endurance against light. heat. and chemicals. They are often chosen for applications that require long-lasting color. such as paints. inks. and cosmetics. Ultimately. the decision between dyes and pigments depends on the desired outcome. application process. and durability needs.
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Q how to make alcohol ink with pigment
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JaniceLambert Release Time: April 11, 2024, 3:57 AM
Making alcohol ink with pigment involves a simple process. Begin by sourcing a high-quality, powdered pigment of your choice. Ensure the pigment is fine and pure for the best results. Next, acquire isopropyl alcohol (91% or higher) for mixing. In a small container, gradually add the powdered pigment to the alcohol. Start with a ratio of about one part pigment to three parts alcohol, adjusting based on the desired opacity and intensity. Stir the mixture thoroughly until the pigment is completely dissolved. For a smoother consistency, consider passing the solution through a fine mesh strainer to remove any undissolved particles. Once your ink is prepared, store it in airtight containers to prevent evaporation. You can experiment with different pigment combinations and alcohol ratios to create custom colors and effects.
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Q phthalocyanine solubility in organic solvents
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MyraFast Release Time: April 10, 2024, 2:35 AM
Phthalocyanines, a class of macrocyclic compounds, are known for their stability and intense coloration, finding applications in dyes, pigments, and electronic materials. Their solubility in organic solvents significantly depends on the central metal ion and the nature of substituents attached to the phthalocyanine ring. Unsubstituted or non-metal-containing phthalocyanines exhibit limited solubility in most organic solvents due to strong intermolecular interactions and high molecular symmetry. However, the solubility can be greatly improved by introducing alkyl, aryl, or other functional groups to the peripheral or non-peripheral positions of the phthalocyanine core. Solvents like N-methyl-2-pyrrolidone (NMP), dimethyl sulfoxide (DMSO), and chlorinated solvents (e.g., dichlorobenzene, chloroform) are generally more effective at dissolving substituted phthalocyanines. The choice of solvent often requires experimentation, taking into account the specific phthalocyanine structure and the...
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