JSYA-CUPT Copper Pyrithione Antimicrobial (CuPT) is a solid copper complex of pyrithione, chemical name bis(1-hydroxy-1H-pyridine-2-thionato-O,S)copper, CAS 14915-37-8. It is a broad-spectrum booster biocide widely incorporated into marine antifouling coatings and outdoor protective coatings. In seawater and humid outdoor conditions, copper ions and the pyrithione ligand are released in a controlled synergistic manner, disrupting cellular metabolism, mitochondrial function and oxidative balance

Product Detail

Product Details

JSYA-CUPT is a yellow-brown to olive green fine powder. It disperses well in solvent-based and water-based coating systems, retaining stable biocidal activity after film formation. The pyrithione group acts as a carrier that transports copper across cell membranes, raising intracellular copper concentration and triggering cytotoxic oxidative stress, which inhibits both marine fouling organisms and fungi. CuPT shows good weather resistance, water resistance and film stability, and is commonly combined with copper-based or other booster biocides in high-performance antifouling formulations. It should be stored in a cool, dry, shaded and sealed condition, kept away from strong oxidizers and incompatible metal contact.

Main advantages:

Broad-spectrum control of algae, barnacles, slime and marine fouling organisms
Dual-action Cu2+ and pyrithione release for strong antifouling efficacy
Effective outdoor anti-mold and anti-fungal protection for cured coating films
Good dispersibility in marine and architectural coating formulations
Weather-resistant and water-stable after film formation
Long-lasting protection in submerged and exposed outdoor environments
Can be formulated with other booster biocides for combined antifouling programs
REACH / TSCA compliant for industrial coating chemical export

Typical applications:

Marine antifouling paints and coatings for submerged surfaces
Boat and vessel hull antifouling formulations
Offshore structure and underwater coating biocidal protection
Exterior architectural coating dry-film mold and algae resistance
Outdoor protective coatings, sealants and facade finishes
Humid-environment industrial coating fungal preservation

JSYA-CUPT copper pyrithione is a reliable multifunctional biocide for marine and outdoor coating manufacturers. It helps reduce marine growth settlement on antifouling surfaces, lowers hull drag and maintenance frequency, and keeps exterior coating films free from mold spots and fungal deterioration under long-term sun, rain and humidity exposure.

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Copper Pyrithione Antimicrobial JSYA-CUPT CAS 14915-37-8, CuPT for Marine Antifouling Coatings Outdoor Anti-Mold

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.