BYK-348

Product Details

CasNo： 64742-46-7

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

1. Basic Information

• Brand and Model: BYK-348, an organosilicon surfactant - type leveling agent from BYK (Germany), specialized in applications in water - based systems and the printing field.
• Packaging Specifications: 25 kg/blue iron drum and 200 kg/blue iron drum, meeting the batch purchase needs of different production capacities.
• Composition: Polyether - modified siloxane, achieving a balance between low surface tension and substrate wetting through molecular structure design.

2. Core Performance

1. Strong Reduction of Surface Tension:
   In water - based coatings, inks and varnishes, it can significantly reduce the surface tension of the system to 20 - 25 mN/m (conventional water - based systems are about 35 - 40 mN/m), promoting uniform spreading of coatings/inks on low - surface - energy substrates (such as PP, PE plastics or metal coatings) and eliminating defects like craters and fisheyes.
2. Efficient Substrate Wettability:
   For polar and non - polar substrates such as glass, metal and plastic, it improves adhesion by reducing interfacial tension. It is especially suitable for printing scenarios with strict wetting requirements (such as film printing and metal can spraying), avoiding ink accumulation or missing printing.
3. Zero Addition of Smoothness:
   Different from traditional silicone - based leveling agents, BYK-348 does not change the surface friction coefficient of the coating. It is suitable for scenarios where the original touch needs to be retained (such as frosted texture coatings, anti - slip packaging inks) or printed products that require subsequent processes like overprinting and hot stamping.
4. Compatibility with Auxiliary - Free Systems:
   Specially designed for formula systems without other surface auxiliaries, it avoids compatibility problems with other additives (such as defoamers and thickeners) and can still exert a stable leveling effect in minimalist formulas.

3. Application Scenarios

• Water - based Coatings Field:
  • Industrial Coatings: Metal anti - corrosion paints, primer for automotive plastic parts, improving the wetting of coatings to galvanized sheets and ABS plastics, and enhancing coating adhesion and weather resistance.
  • Architectural Coatings: Exterior wall latex paints, wood varnishes, ensuring uniform brushing on wall/wood surfaces and avoiding sagging or uneven gloss.
• Printing Ink Field:
  • Packaging Printing: Food - grade plastic film gravure inks, carton flexographic inks, solving the spreading problem of inks on PE films or coated paper surfaces and improving pattern clarity and color saturation.
  • Label Printing: UV inks for self - adhesive labels, enhancing the wetting of inks to PET substrates and preventing blurring at the edges of small characters.
• Varnish Field:
  • Wood varnishes and metal varnishes, while improving gloss, maintain the original friction performance of the coating, suitable for scenarios requiring scratch resistance such as furniture and home appliance casings.

4. Usage Guide

• Addition Amount:
  0.1 - 0.5% based on the total formula. It is recommended to determine the optimal dosage (such as 0.1%, 0.3%, 0.5%) through gradient tests to observe the balance between leveling effect and foam stability.
• Addition Stage:
  It can be added during the grinding stage or paint mixing stage in coating/ink production. It is recommended to dilute it 10 - 20 times with deionized water or a system - compatible solvent (such as propylene glycol methyl ether) and then add it slowly, stirring for 15 - 30 minutes until uniformly dispersed.
• Compatibility Tips:
  It is compatible with water - based acrylic resins, polyurethane dispersions (PUD) and water - soluble epoxy systems. Avoid mixing with strongly cationic auxiliaries (such as quaternary ammonium salt - based ones).

5. Storage and Safety

• Storage Conditions:
  Store in a cool and dry place at 5 - 35°C in a sealed manner, with a shelf life of 12 months; slight turbidity may occur below 5°C, and it does not affect performance after heating to 25°C and stirring evenly.
• Environmental Characteristics:
  Free of APEO (alkylphenol ethoxylates), compliant with EU REACH and US FDA food contact material regulations, and suitable for environmentally friendly coating and ink formulations.