Troysan® S61 Paste

Troysan® S61 Paste by Troy Corporation (Arxada) is a highly cost-effective, isothiazolinone-, & diuron-free, broad-spectrum, water-based, dry-film preservative. It is suitable for exterior applications. It is effective against a wide variety of fungal and algal organisms. Troysan® S61 Paste is particularly suitable for use in highly alkaline systems or if the protected system is to be applied on alkaline surfaces as fresh concrete.

Overview

Troysan® S61 Paste is a highly concentrated, broad-spectrum dry-film preservative designed to protect coatings and construction materials from fungal and algal growth. Developed by Arxada (formerly Troy Corporation), it comes in a paste form that enables easy incorporation into both water-based and solvent-based systems. Troysan® S61 Paste provides long-lasting protection in extreme environments, including high humidity and UV-exposed areas. With a combination of fungicidal and algaecidal actives, it offers durable film preservation without affecting coating appearance or performance. It is particularly suitable for architectural coatings, wood finishes, and flexible sealants where superior exterior durability is required.

Benefits

  • High-Performance Paste Form – Concentrated delivery of biocidal actives for long-lasting protection

  • Broad-Spectrum Film Protection – Effective against a wide range of fungi and algae

  • Low Migration – Ensures extended protection with minimal leaching

  • Easy Dispersion – Mixes uniformly into various coating formulations

  • UV and Weather Resistant – Maintains efficacy in outdoor and sunlight-exposed environments

  • Non-Yellowing & Non-Discoloring – Preserves aesthetic appeal of coatings

Applications

  • Exterior Paints & Coatings – Preserves decorative and protective films against surface mold and algae

  • Construction Sealants – Ideal for use in silicone, polyurethane, and acrylic sealants

  • Wood Coatings – Protects outdoor wood from discoloration and surface degradation

  • EIFS & Renders – Adds microbial resistance to façade and plaster applications

  • Roof Coatings – Enhances performance under standing water and UV exposure

  • Industrial Maintenance Coatings – Provides resistance in harsh environmental conditions

Properties Table

PropertyDetails
Product NameTroysan® S61 Paste
ManufacturerArxada (formerly Troy Corporation)
Chemical TypeDry-film preservative (paste form)
Active IngredientsProprietary blend of fungicides and algaecides
Physical FormPaste
AppearanceLight brown to tan paste
OdorMild
pH (as supplied)~6.0 – 7.5
SolubilityDispersible in both water-based and solvent-based systems
Density @ 25 °C~1.15 g/cm³
Flash Point>100 °C
Recommended Use Level0.2% – 1.5% depending on application
Film Protection Duration3–6 years depending on exposure conditions
Shelf Life24 months (in sealed original packaging)
Packaging Options20 kg pails, 200 kg drums

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