BYK-163

Product Details

CasNo： 64742-46-7

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

Basic Information

• Brand and Model: BYK, BYK-163
• Packaging Specifications: 25 kg/blue iron drum (suitable for laboratory research, small-batch trials, and procurement by small and medium-sized enterprises, flexibly meeting small-scale needs), 195 kg/blue iron drum (suitable for large-scale factory production, reducing unit packaging costs and procurement frequency)
• Chemical Composition: High-molecular-weight block copolymer containing pigment-affinic groups (in the molecular structure, pigment-affinic groups can accurately adsorb onto pigment surfaces, while high-molecular-weight block chains build a long-term stable dispersion system through steric hindrance effects without imparting charge to pigment particles)

Product Characteristics

• Appearance and Physical Properties:Typically a pale yellow to light brown transparent liquid with no irritating odor. Density is approximately 1.02 - 1.12 g/cm³ at 20℃, with a flash point >60℃, resulting in low fire risk and high safety during storage and transportation. It exhibits excellent compatibility with most solvent-based coating systems (such as aldehyde resin and acrylic resin systems) and pigment concentrates, enabling rapid and uniform dispersion without stratification, flocculation, or turbidity.

• Core Functions

  1. Broad-Spectrum Pigment Stabilization: It provides effective stabilization for various pigments including inorganic pigments (e.g., titanium dioxide, iron oxides), organic pigments (e.g., phthalocyanine blue, azo red), and carbon black. There's no need to replace dispersants for different pigments, simplifying formula management.
  2. Charge-Neutral Dispersion: Pigment deflocculation and stabilization are achieved solely through steric hindrance without imparting charge to pigment particles. This fundamentally avoids flocculation issues when mixing pigments with different charges, making it particularly suitable for multi-pigment compound systems and ensuring color uniformity.
  3. Comprehensive Performance Enhancement: After deflocculation, pigment particles become finer with uniform distribution, which can significantly improve coating gloss (especially effective for high-gloss topcoats), color strength (achieving target color depth with less pigment usage), and optimize transparency (for transparent pigment systems) or hiding power (for opaque pigment systems).
  4. Efficient Viscosity Reduction: It can effectively reduce the viscosity of grinding pastes (by 25% - 40% compared to non-added systems), improving grinding efficiency, reducing grinding energy consumption and equipment wear. It also allows the system to accommodate a higher proportion of pigments, increasing color concentration without affecting fluidity.

Application Fields

• Main Application Scenarios

  1. Solvent-Based General Coatings: Covering architectural coatings (e.g., solvent-based exterior wall paints), industrial coatings (e.g., general machinery protective paints), and wood coatings (e.g., solvent-based furniture paints). It disperses various pigments to ensure coating appearance performance and application smoothness.
  2. Pigment Concentrates: Specifically suitable for solvent-based general pigment concentrates (e.g., color masterbatches, tinting pastes) using aldehyde resins or acrylic resins as grinding resins. It ensures storage stability of concentrates, preventing stratification and sedimentation, allowing downstream customers to directly and quickly adjust colors while reducing the risk of floating and blooming.
  3. Multi-Pigment Compound Systems: Such as automotive refinish paint colorants and high-end printing ink pastes that require mixing of multiple pigments. With its charge-neutral property, it solves the flocculation problem when mixing pigments with different charges, ensuring color consistency and batch stability.

• Applicable Systems: Solvent-based coatings (aldehyde resin, acrylic resin, alkyd resin, polyurethane resin systems), solvent-based pigment concentrates (pastes with aldehyde resin/acrylic resin as carriers).

Recommended Dosage and Usage Methods

• Recommended Dosage:Calculated based on the "total pigment amount" in the formula, the conventional addition level is 1% - 4% (added directly as purchased). For difficult-to-disperse pigments (e.g., nano-sized pigments, high-pigment carbon black) or high-pigment content systems (pigment volume concentration >35%), the dosage can be appropriately increased to 4% - 6% to ensure sufficient deflocculation and stabilization.

• Usage Methods:

  1. Addition During Grinding Stage: Add BYK-163 together with pigments, grinding resins (aldehyde resin or acrylic resin), and solvents into grinding equipment such as sand mills and high-speed dispersers. During the grinding process, the dispersant fully adsorbs onto pigment surfaces to form a stable steric hindrance layer, maximizing viscosity reduction and dispersion effects at this stage.
  2. Supplementary Addition During Paint/Tint Mixing Stage: If the system viscosity is too high or pigment dispersion is uneven after grinding, a small supplementary amount (not exceeding 20% of the total dosage) can be added during the paint or tint mixing stage. After addition, stir at 800 - 1200 r/min for 10 - 15 minutes to ensure complete integration with the system.

Storage and Transportation

• Storage Conditions: Store in a cool, dry, well-ventilated area at 5 - 35℃, avoiding direct sunlight (high temperatures may cause slight degradation of block copolymers, affecting dispersion performance) and freezing (temperatures below 0℃ may cause slight stratification, which can be restored to uniformity and transparency after thawing and thorough stirring without affecting usage). Keep barrels tightly sealed to prevent solvent evaporation or contamination by impurities and moisture.
• 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). Provide sun protection during summer transportation; no additional insulation is needed in winter (short-term low temperatures do not affect product performance).

Competitive Advantages

1. Broad Compatibility: Suitable for various pigments including inorganic, organic, and carbon black, and compatible with multiple solvent-based resin systems. Customers do not need to stock multiple dispersants for different pigments or systems, reducing inventory costs and the difficulty of formula adjustment.
2. Charge-Neutral Advantage: Different from traditional charged dispersants, it achieves stabilization through pure steric hindrance, completely solving the charge flocculation problem in multi-pigment compounding and ensuring color uniformity, especially suitable for high-end tinting scenarios.
3. Outstanding Cost-Effectiveness: While achieving multiple effects such as viscosity reduction, gloss enhancement, and color intensification, it has a moderate addition amount and can reduce pigment usage. Long-term use can lower overall raw material costs, making it more cost-effective than most general-purpose dispersants.
4. Technical Support: BYK provides a professional technical team that can customize personalized dosage and dispersion schemes according to customers' specific pigment types, resin systems, and application scenarios. It assists in solving on-site issues such as uneven dispersion and abnormal viscosity, accelerating product development and mass production processes.