BYK-358N

Product Details

CasNo： 26761-45-5

MF： C13H24O3

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

1. Basic Information

• Brand and Model: BYK-358N, a polyacrylate - based surface additive developed by BYK (Germany), specifically designed for solvent - based coating systems and room - temperature curing plastic systems.
• Packaging Specifications: 25 kg/blue iron drum and 185 kg/blue iron drum, meeting the procurement needs of small - batch and industrial - scale production.
• Core Component: Polyacrylate solution, suitable for leveling and anti - crater applications in medium - polarity to polar systems.

2. Core Performance

1. Efficient Leveling and Anti - Crater:
   In solvent - based and solvent - free coating systems, by reducing the surface tension (to 28 - 32 mN/m), it eliminates defects such as craters and fisheyes caused by differences in substrate surface energy, ensuring a uniform and smooth coating. It is especially suitable for atomized spraying (such as automotive topcoat spraying) and powder spraying processes to improve the appearance quality of the coating.
2. Strong System Compatibility:
   • Compatible with medium - polarity to polar resins (such as alkyd resins, acrylic resins, epoxy resins), without affecting the transparency of clear coats, and will not produce haze in colored paints (for example, the orientation of aluminum powder in metallic paints is not disturbed).
   • Particularly suitable for room - temperature curing systems (such as unsaturated polyester and epoxy resin floor coatings), and can still exert a stable leveling effect during normal - temperature curing to avoid surface defects caused by uneven curing speed.
3. Adaptability to Spraying Processes:
   It optimizes the atomization performance of coatings, reduces splashing and orange peel phenomena during spraying, and is especially suitable for high - solid - content coatings and thick coating scenarios (such as heavy anti - corrosion coatings), ensuring a balance between coating leveling and mechanical properties.

3. Application Fields

• Solvent - based Coatings:
  • Automotive Coatings: Basecoats and clear coats for original factory paints and refinish paints, improving the leveling property of spraying, and enhancing the gloss and distinctness of image (DOI value) of the paint surface, while avoiding clouding of clear coats or haze in colored paints.
  • Industrial Anti - corrosion Coatings: Ship paints and container coatings, enhancing the wetting of coatings on metal substrates in solvent - based epoxy and polyurethane systems, forming a dense anti - corrosion layer, and improving the leveling property during thick coating.
  • Wood Coatings: Solvent - based PU paints and NC paints, improving the uniformity of coatings on wood surfaces, and reducing brush marks and roller coating defects, suitable for high - end furniture coating.
• Room - Temperature Curing Plastic Systems:
  • Unsaturated Polyester Resins: Surface coatings for artificial stones and FRP products, preventing bubbles and craters during normal - temperature curing, and improving the surface finish of products.
  • Epoxy Resin Floors: Solvent - free epoxy self - leveling floors, promoting the leveling and defoaming of coatings on the ground, and forming a flat and wear - resistant industrial floor.

4. Usage Guide

• Recommended Dosage:
  0.1 - 1.0% based on the total formula. For solvent - based coatings, 0.3 - 0.8% is recommended, and for room - temperature curing systems, 0.5 - 1.0% is recommended. The optimal dosage needs to be determined through tests (such as gradient tests of 0.3%, 0.5%, 0.8%) to avoid foaming problems caused by excessive addition.
• Adding Method:
  It can be added during the grinding stage or paint mixing stage. Add it directly to the coating system and stir for 15 - 20 minutes until uniformly dispersed. If the system viscosity is high, it can be diluted with matching solvents (such as xylene, butyl acetate) before addition.
• Compatibility Tips:
  Compatible with alkyd resins, acrylic resins, epoxy resins, and unsaturated polyester resins. Avoid excessive mixing with strongly polar solvents (such as methanol, acetone) or non - polar solvents (such as n - hexane) to prevent system demulsification.

5. Storage and Safety

• Storage Conditions:
  Store in a sealed manner in a cool and dry place at 5 - 35°C, with a shelf life of 12 months; if the viscosity increases in a low - temperature environment, heat to 25°C and stir evenly, which will not affect the use.
• Environmental Characteristics:
  Compliant with the EU Solvent Emission Directive (SED), the VOC content is controllable, and it is suitable for industrial coating scenarios with environmental protection requirements.