BYK-111

Product Details

CasNo： 64742-46-7

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

Basic Information

• Brand and Model: BYK, BYK-111
• Packaging Specifications: 25 kg/blue iron drum (suitable for small-batch trials and laboratory research), 200 kg/blue iron drum (meeting large-scale production needs of factories, reducing unit packaging costs)
• Chemical Composition: Copolymer containing acidic groups (acidic groups in the molecular structure form strong interactions with the surface of inorganic pigments, while copolymer chains provide steric hindrance to achieve stable pigment dispersion)

Product Characteristics

• Appearance and Physical Properties:Typically a colorless to pale yellow transparent liquid with no irritating odor. Density is approximately 1.0 - 1.1 g/cm³ at 20℃, with a flash point higher than conventional solvent-based additives (>60℃), ensuring good safety during storage and transportation. As a solvent-free additive, it exhibits excellent compatibility with solvent-based, solvent-free coating systems (such as alkyd, acrylic, and polyurethane systems) and printing ink systems (such as nitrocellulose and polyamide systems), enabling rapid and uniform dispersion without stratification or turbidity.

• Core Functions

  1. Efficient Stabilization of Inorganic Pigments: Through charge adsorption and chemical interactions between acidic groups in the molecule and the surface of inorganic pigments (especially titanium dioxide), it quickly breaks down pigment agglomerates to form a stable dispersion system. This prevents pigment sedimentation and flocculation during storage, ensuring long-term stability of coatings/inks.
  2. Powerful Viscosity Reduction: In grinding pastes, it can significantly reduce system viscosity—compared to non-added systems, it lowers grinding paste viscosity by 40% - 60%, improving grinding efficiency, reducing grinding time and energy consumption. 同时，它能使研磨后的颜料粒径更细，增强着色力和遮盖力。
  3. Compatibility with Acid-Catalyzed Systems: Due to its anionic nature, it is highly compatible with acid-catalyzed systems (such as acid-catalyzed crosslinking systems commonly used in coil coatings). It does not interfere with the activity of acid catalysts, ensuring normal coating curing reactions and guaranteeing coating performance (e.g., hardness, weather resistance, chemical resistance).
  4. Versatility Across Multiple Systems: It is suitable for solvent-based, solvent-free coatings, and printing inks simultaneously, eliminating the need to replace dispersants for different systems and simplifying customers' formula management and procurement processes.

Application Fields

• Main Application Scenarios

  1. Solvent-Based Coatings: Such as original automotive paints, industrial protective paints, and wood coatings. It is used to disperse inorganic pigments like titanium dioxide, improving color stability and application performance of coatings (e.g., reducing spraying viscosity and enhancing leveling).
  2. Solvent-Free Coatings: Like solvent-free epoxy floor coatings and solvent-free polyurethane coatings. It solves problems of difficult pigment dispersion and high viscosity in solvent-free systems, ensuring coating workability and film quality.
  3. Printing Inks: Covering gravure and flexographic printing inks (e.g., packaging printing inks). It stabilizes the dispersion of inorganic pigments, ensuring color uniformity of printed products and reducing defects such as blockages and color differences.
  4. Acid-Catalyzed Coatings: Typically coil coatings (used for pre-coating metal coils). During acid-catalyzed curing, it stabilizes pigment dispersion without affecting the curing reaction, ensuring high hardness, scratch resistance, and corrosion resistance of coil coatings.

• Applicable Systems: Solvent-based coatings (alkyd, acrylic, polyurethane, epoxy, and other resin systems), solvent-free coatings (100% solids systems such as epoxy and polyurethane), printing inks (nitrocellulose, polyamide, acrylic resin systems), and acid-catalyzed crosslinking coatings (e.g., coil coatings).

Recommended Dosage and Usage Methods

• Recommended Dosage:Calculated based on the "total amount of inorganic pigments" in the formula, the conventional addition level is 0.5% - 2% (added directly as purchased). For systems with high pigment content (pigment volume concentration >40%) or difficult-to-disperse pigments (e.g., nano-sized titanium dioxide), the dosage can be appropriately increased to 2% - 3%.

• Usage Methods:

  1. Addition During Grinding Stage: Add BYK-111 together with pigments, resins, and solvents (in solvent-based systems) into grinding equipment (such as sand mills and high-speed dispersers). During the grinding process, it fully adsorbs onto pigment surfaces to form a stable dispersion layer, maximizing viscosity reduction and dispersion effects at this stage.
  2. Supplementary Addition During Paint/Ink Mixing Stage: If slight pigment agglomeration or high viscosity is observed after grinding, a small supplementary amount (not exceeding 20% of the total dosage) can be added during the mixing stage. After addition, stir at 800 - 1200 r/min for 10 - 15 minutes to ensure full integration with the system.

Storage and Transportation

• Storage Conditions: Store in a cool, dry, and well-ventilated area at 5 - 35℃, avoiding direct sunlight (high temperatures may cause slight degradation of copolymer molecular chains, affecting dispersion performance) and freezing (temperatures below 0℃ may cause stratification, which can be restored to transparency after thawing and thorough stirring without affecting usage). Keep barrels tightly sealed to prevent impurity contamination or solvent evaporation.
• Shelf Life: 60 months under the above storage conditions (counted from the production batch date).
• Transportation Requirements: Transport as a "non-hazardous chemical." Avoid severe collisions and inversion during transportation (to prevent leakage from damaged blue iron drums). Protect from prolonged sunlight in summer; no additional insulation is needed in winter (short-term low temperatures do not affect product performance).

Competitive Advantages

1. Strong Targeting: Specifically optimized for dispersion and stabilization of inorganic pigments (especially titanium dioxide) and highly compatible with acid-catalyzed systems, solving the pain point of "conflict between dispersants and acid catalysts" in fields such as coil coatings.
2. Significant Viscosity Reduction: Compared to ordinary dispersants, it reduces grinding paste viscosity more efficiently, improving production efficiency, reducing equipment wear, and lowering production costs in the long run.
3. Multi-System Compatibility: Spanning solvent-based, solvent-free, printing ink, and acid-catalyzed systems, customers do not need to stock multiple dispersants, reducing inventory and management costs, and minimizing compatibility risks during formula switching.
4. Technical Support: BYK provides a professional technical team that can customize dosage plans based on customers' specific formulas (such as pigment types, resin systems, and curing systems) and assist in solving on-site issues like uneven dispersion and abnormal viscosity, accelerating product development and mass production processes.