BYK-P104S

Product Details

CasNo： 64742-46-7

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

Basic Information

• Brand and Model: BYK, BYK - P104S
• Packaging Specifications: 25 kg/blue iron drum, 185 kg/blue iron drum
• Chemical Composition: Solution of low - molecular - weight unsaturated polycarboxylic acid polymer and polysiloxane copolymer

Product Characteristics

• Appearance and Physical Properties:Typically a colorless to light yellow transparent liquid with a slight, non - irritating special odor. The density is approximately 0.9 - 1.1 g/cm³ at 20℃, and it has a higher flash point than conventional solvent - based coating additives, ensuring safety during storage and transportation. It shows excellent solubility in medium to high - polarity solvents such as esters, ketones, and alcohol ethers, and can quickly mix uniformly with solvent - based coating systems without stratification or precipitation.

• Core Functions

  1. Controlled Flocculation Dispersion: As a controlled flocculation wetting and dispersing agent, it enables pigment particles to form a "weak and controllable" flocculation structure—preventing pigment sedimentation and agglomeration during storage to maintain coating system stability; under shear force during application (e.g., spraying, rolling), the flocculation structure rapidly dissociates, ensuring uniform pigment dispersion and color consistency of the coating film; after application, weak flocculation is re - formed to fundamentally avoid floating and blooming.
  2. Targeted Anti - Floating and Blooming: For scenarios where titanium dioxide is mixed with colored pigments (such as iron oxide red, phthalocyanine blue, etc.), it balances the migration rates of different pigments through the adsorption of polycarboxylic acid polymers and the surface tension adjustment of polysiloxanes, completely solving the "color stratification" problem caused by differences in pigment density and particle size, and ensuring the uniformity of the coating film appearance.
  3. Synergistic Enhancement of Silicone: Compared with ordinary dispersants, the contained polysiloxane component can further optimize the surface smoothness of the coating film, reduce construction defects such as brush marks and sagging, and slightly improve the anti - blocking and stain - resistance of the coating film, balancing the dual improvement of "dispersion effect" and "coating film performance".

Application Fields

• Main Application Scenarios

  1. Automotive Coatings: Suitable for the primer and topcoat of original automotive paint (OEM) and the color matching process of automotive refinish paint, ensuring uniform and deviation - free body color, especially for metallic flash paints and solid color paints with high requirements for color consistency.
  2. Industrial Protective Coatings: Used in solvent - based protective coatings for construction machinery, home appliance casings, metal pipes, etc., ensuring the anti - rust and weather - resistance of the coating while avoiding color unevenness that affects product appearance competitiveness.
  3. Wood Coatings: Compatible with solvent - based PU wood paints and nitrocellulose paints, used for the coloring coatings of solid wood furniture and floors, preventing color unevenness in wood textures and improving the decorative texture of wood surfaces.

• Applicable Coating Systems: Solvent - based medium to high - polarity coating systems such as alkyd resin, acrylic resin, polyurethane resin, and polyester resin (not suitable for non - polar solvent - based or pure water - based coatings).

Recommended Dosage and Usage Methods

• Recommended Dosage: Calculated based on the "total pigment amount" in the coating formula, the conventional addition amount is 0.5% - 3% (added directly according to the purchased product form); if the titanium dioxide content in the system is high (such as white or light - colored coatings), or the colored pigments have fine particle sizes (such as nano - grade pigments), it can be appropriately increased to 3% - 4% to enhance the dispersion effect.
• Usage Methods
  1. Priority Addition in the Pigment Grinding Stage: Add BYK - P104S together with pigments, solvents, and resins into grinding equipment (such as sand mills, high - speed dispersers), and allow it to be fully adsorbed on the pigment surface during the grinding process to form a stable dispersion layer, which can maximize the anti - floating and blooming effect.
  2. Supplementary Addition in the Paint Mixing Stage: If slight floating is found after grinding, a small amount can be added supplementary during paint mixing (it is recommended not to exceed 30% of the total dosage), and after supplementary addition, stir at 1000 - 1500 r/min for 15 - 20 minutes to ensure full mixing with the coating system.

Storage and Transportation

• Storage Conditions: Store in a cool and dry environment at 5 - 35℃, avoiding direct sunlight, high temperatures (exceeding 40℃ may cause polymer degradation), and freezing (below 0℃ may cause stratification, and it is necessary to fully stir to confirm no precipitation before use after thawing); seal the barrel mouth during storage to prevent solvent volatilization from affecting the concentration.
• Shelf Life: Under the above storage conditions, the shelf life is 60 months (calculated from the date marked on the production batch number).
• Transportation Requirements: Transport as "non - hazardous chemicals", avoid severe collision and inversion during transportation to prevent leakage caused by damage to blue iron drums; avoid prolonged exposure to the sun in summer and provide thermal insulation protection in winter.

Competitive Advantages

1. Upgraded Performance: Compared with ordinary controlled flocculation dispersants, the addition of a polysiloxane component additionally optimizes the surface performance of the coating film on the basis of anti - floating and blooming, achieving dual improvement of "dispersion + appearance" to adapt to high - end coating needs.
2. Wide Compatibility: It has good adaptability to various medium and high - polarity resin systems, eliminating the need to separately replace dispersants for different coating formulas and reducing customer procurement and formula adjustment costs.
3. High Dosage Efficiency: A small amount can solve the problem of pigment mixing and dispersion, which can reduce the addition amount by 10% - 20% compared with similar products, and can reduce coating production costs in the long term.
4. Technical Support: BYK provides exclusive technical services, which can customize dosage plans according to customers' specific coating formulas (such as pigment types, resin types), and assist in solving abnormal problems (such as excessive flocculation, insufficient dispersion, etc.) occurring in the dispersion process.