BA50-25 Marine TBT-Free SPC Antifouling Coating

BA50-25 Marine TBT-Free SPC Antifouling Coating

Product Introduction:

BA50-25 is a high-performance, tin-free self-polishing copolymer (SPC) antifouling coating engineered to deliver reliable fouling protection for commercial and naval vessels operating in diverse marine environments. Utilizing advanced self-polishing copolymer technology, this coating ensures a consistent and controlled biocide release rate throughout its service life, maintaining a smooth hull surface that effectively reduces underwater friction and optimizes vessel fuel efficiency. The unique polishing mechanism continuously renews the active surface layer, preventing the settlement of marine organisms such as barnacles, algae, and mussels, while minimizing the need for frequent dry-docking. With a VOC content of less than 420g/L, BA50-25 meets modern environmental standards without compromising on protective performance. The coating is supplied as a convenient single-pack formulation with a volume solids content of 55% ± 2%, and is available in two standard colours: Red (5200R) and Brown (5200B), with a matt finish. No induction period is required prior to application.

Intended Uses:

BA50-25 is versatile and suitable for a broad range of marine applications, including:

*Newbuilding – ideal for application on newly constructed vessels.

*Maintenance and Repair – suitable for dry-dock repair and overhaul work.

*On Board Maintenance – can be applied during routine in-service upkeep.

Method Of Application:

For application of BA50-25, airless spray is recommended, with a tip size range of 0.54–0.8mm and an output pressure of at least 17 MPa. Air spray may also be used, requiring a tip size of 2.0–3.0mm and an output pressure of no less than 0.4 MPa. Brush or roller application is acceptable for small-area use only. The use of thinner is not recommended; however, in exceptional circumstances, BX-801 may be added at a maximum volume of 5%. BX-801 should also be used as the equipment cleaner.

Film Thickness & Theoretical Coverage:

Drying & Overcoating Data：

Surface Preparation:

For Newbuilding: BA50-25 should be applied over a recommended tie-coat scheme. The coating surface must be clean, dry, and free from contamination. Application must be carried out within the specified overcoating interval . Areas of breakdown or damage should be prepared to the specified standard (e.g., St3) and primed prior to the application of BA50-25.

For Repair: BA50-25 may be applied directly over aged BA50-25 coatings, provided the existing coating is intact and tightly adherent. Loose or flaking coatings should be removed back to a firm edge. The surface must be thoroughly fresh-water washed and degreased. An appropriate primer should be used to repair damaged areas before applying the full coat.

Application Conditions & Limitations:

Apply in good weather conditions. The surface temperature must be at least 3°C above the dew point, and ambient relative humidity should be below 85%. For hull sections exposed to direct sunlight, the final coat of BA50-25 should be immersed within 30 days after drying. If this period is exceeded, antifouling performance may be impaired. Drying times and overcoating intervals may vary depending on actual site environmental conditions. Avoid prolonged inhalation of solvent vapours and paint mist. Do not allow contact with skin or eyes. Ensure adequate ventilation and take fire prevention measures during application.

Storage:

Store in a cool, dry, and well-ventilated area. Protect from direct sunlight, heat sources, and open flames. Containers must remain tightly sealed. Please refer to the relevant product data sheet for specific shelf life information.