IOTA-4100 Non-Foaming Defoaming Wetting Agent is a high-performance additive based on a specially modified polysiloxane copolymer, specifically designed for aqueous systems. It integrates multiple functions, including substrate wetting, anti-cratering, flow enhancement, and defoaming. Its unique non-foaming characteristics and exceptional wetting capabilities make it particularly effective in spray coating, high-speed roller processes, and on hard-to-wet surfaces. It is especially suitable for water-based polyurethane, acrylic, and epoxy systems. Thanks to its comprehensive performance, this product has become an ideal choice for modern industrial coatings, printing inks, and synthetic leather release paper manufacturing.

The core advantage of IOTA-4100 lies in its ability to significantly reduce surface tension. As a silicone-based surfactant specifically designed for aqueous systems, it rapidly penetrates and spreads across various substrate surfaces, effectively addressing wetting deficiencies and cratering caused by uneven surface tension. In coating applications, even on difficult-to-coat substrates such as plastics, metals, or high-density composites, IOTA-4100 ensures uniform adhesion by leveraging its powerful wetting properties, preventing defects caused by substrate hydrophobicity or contamination. Additionally, its defoaming performance is particularly critical in high-speed mixing or spraying processes, preventing bubble entrapment that could compromise film appearance and performance.

In the printing ink industry, the wetting properties of IOTA-4100 significantly improve ink spreadability on non-absorbent substrates (such as films and metal foils), reducing issues like ink misting or edge shrinkage during printing, thereby ensuring pattern clarity and color uniformity. For synthetic leather release paper production, this additive optimizes resin coating smoothness, preventing surface defects caused by insufficient wetting, thus enhancing release performance and durability.

Another notable feature of IOTA-4100 is its flexible dosage range. Only 0.1%–1.0% is required to achieve significant effects, with the exact ratio adjustable based on system requirements. For example, in high-solid or high-viscosity systems, a slightly higher dosage can enhance wetting and leveling, while minimal amounts suffice for low-tension substrates. This broad applicability allows it to adapt to diverse production conditions while keeping costs manageable for users.

It is worth noting that IOTA-4100's non-foaming nature sets it apart from traditional silicone additives. Conventional wetting agents tend to generate microfoam during high-speed coating or rolling, necessitating additional defoamers. However, IOTA-4100's molecular structure simultaneously suppresses foam formation during wetting, simplifying formulation processes. This feature is particularly valuable in automated spray coating lines, reducing downtime for bubble-related cleaning and improving production efficiency.

In practical applications, IOTA-4100 also demonstrates excellent compatibility. Whether in single-component or dual-component aqueous systems, it disperses stably without affecting the water resistance or gloss of the coating film. Its chemical stability ensures activity across a wide pH range (typically 5–10), preventing performance degradation due to storage or application environment changes. Users can also combine it with other additives (such as leveling agents or thickeners) to further optimize formulation performance.

In summary, the IOTA-4100 Non-Foaming Defoaming Wetting Agent, with its multifunctionality, high efficiency, and broad applicability, has become a crucial additive in water-based industrial coatings, inks, and specialty coating fields. It not only addresses the technical challenges of balancing wetting and defoaming in traditional additives but also delivers significant economic benefits by simplifying formulations and improving process stability. Looking ahead, as environmental regulations tighten and water-based technologies become more widespread, the demand for such high-performance additives will continue to grow, and the innovative features of IOTA-4100 position it for a promising future in diverse applications.