IOTA-4100 is a high-performance defoaming wetting agent based on a specially modified polysiloxane copolymer, designed for waterborne systems. It combines excellent substrate wetting, anti-cratering, flow enhancement, and defoaming properties. Its unique foam-free characteristic and superior wetting ability make it particularly effective in spray coating, high-speed roller coating, and on hard-to-wet surfaces. It is especially suitable for waterborne polyurethane, waterborne acrylic, and waterborne epoxy systems. As a multifunctional additive, IOTA-4100 not only significantly improves the application performance of coatings but also effectively addresses film defects caused by uneven substrate surface tension or contamination. It is an ideal choice for waterborne industrial coatings, printing inks, synthetic leather release paper, and related fields.

The key advantage of IOTA-4100 lies in its role as a silicone-based surfactant for waterborne systems, which dramatically reduces surface tension, thereby providing outstanding substrate wetting and leveling properties. In coating applications, low-energy surfaces or contaminants on substrates often lead to defects such as craters and fisheyes. IOTA-4100 rapidly spreads and penetrates, eliminating interfacial tension differences and significantly reducing such issues. At the same time, its defoaming performance avoids the drawbacks of conventional wetting agents, which may introduce bubbles and affect coating appearance—particularly crucial for high-gloss or transparent coating systems. Additionally, this additive promotes coating flow and spreading, ensuring a more uniform and smooth film formation, thereby enhancing the final product's aesthetic and protective qualities.

In practical applications, IOTA-4100 demonstrates broad versatility. For waterborne coatings, it effectively improves the coating performance on low-surface-energy substrates such as metals, plastics, and glass, addressing issues like poor adhesion or uneven film thickness caused by inadequate wetting. In the printing ink industry, its rapid wetting capability ensures uniform ink deposition on paper, film, or composite materials, preventing printing defects due to uneven ink absorption. In synthetic leather release paper production, the efficient wetting ability of IOTA-4100 facilitates the uniform spreading of release agents on paper surfaces, improving flatness and release performance. Notably, this additive exhibits excellent compatibility with waterborne resins, without causing system turbidity or stability issues. The recommended dosage is typically low, ranging from 0.1% to 0.5% of the total formulation, yet it delivers significant results.

From a chemical perspective, IOTA-4100's molecular structure incorporates both hydrophilic and hydrophobic siloxane segments, enabling rapid migration to interfaces and oriented alignment, thereby efficiently reducing surface tension. Compared to conventional wetting agents, its modified polysiloxane structure avoids foam accumulation issues caused by excessive foam stabilization, making it particularly suitable for high-speed mixing, spraying, or roller-coating processes prone to bubble formation. Furthermore, this product is environmentally friendly, free from harmful substances such as alkylphenol ethoxylates (APEO), aligning with modern industry demands for sustainable chemical solutions.

In summary, the IOTA-4100 defoaming wetting agent stands out as an innovative solution in the field of waterborne additives due to its multifunctionality, high efficiency, and broad applicability. Whether enhancing the workability of coatings, optimizing ink printing performance, or improving the production efficiency of release paper, it delivers high performance at low dosages, offering industrial users an economical and reliable option. Its unique foam-free wetting properties provide technical advantages that traditional additives cannot match, particularly in demanding applications, showcasing the precision and efficiency of modern chemical design.