In waterborne industrial paint, wood coating, polyurethane, printing paste, carpet adhesive, and adhesive systems, water as the dispersion medium has relatively high surface tension, so wetting on low-energy or porous substrates such as metal, plastic, old coating, and wood pores is often insufficient. During high-speed spraying, roller coating, and dip coating, if the additive cannot rapidly migrate to the newly formed interface and reduce dynamic tension, the coating retracts and forms craters, orange peel, and pinholes. On vertical surfaces, sagging and dripping undermine film-thickness uniformity. Conventional hydrocarbon wetting agents have limited tension reduction; some ordinary silicone wetting agents reduce tension strongly but stabilize foam, trapping formulators in the loop of "add wetting agent then foam, add defoamer then craters". With waterborne industrial, dip, varnish, and printing-paste formulations demanding "substrate wetting, good leveling, low foam, anti-sag, fewer defects", finding an "organosilicone-based, high-active, low dynamic tension, cloud-point adapted to waterborne" wetting agent has become a key formulation issue. Addressing this, Anhui IOTA Silicone Oil Co., Ltd. officially launches Waterborne System Wetting Agent IOTA 2409. Characterized by "silicone as main component; active content >99.6%; cloud point 55–65℃; substrate wetting and leveling, anti-sag, prevention of craters/orange peel/pinholes; highlighted advantages of good leveling, low foam, low dynamic tension", backed by "organosilicone active skeleton + high-active uniformity + low dynamic tension + low-foam compatibility", it serves as the "spreading choice" for waterborne coating, adhesive, and printing paste, achieving the leap from "hydrocarbon or foamy silicone wetting" to "organosilicone low-foam low-dynamic-tension rapid substrate spreading". System Positioning: Organosilicone Low-Foam Wetting Agent vs. Hydrocarbon/Ordinary Silicone IOTA 2409 belongs to the organosilicone waterborne wetting agent family, distinct from ordinary hydrocarbon surfactants and non-low-foam conventional silicone oils. Hydrocarbon types can reduce water-phase tension only to around 30 mN/m, still struggling on PP, PE, oily metal, and hydrophobic old paint. Ordinary PDMS reduces tension strongly but disperses poorly in water and tends to stabilize foam or float. IOTA 2409 uses organosilicone active material with >99.6% active content, combining low dynamic tension with low-foam tendency, making it easier to achieve "wet without craters, spread without foam" in waterborne acrylic, PU, alkyd, and industrial systems. Molecular Architecture: Organosilicone Active Skeleton + High Active + Cloud Point + Low Dynamic Tension The core design of IOTA 2409 comes from organosilicone wetting surfactant structure:

• Organosilicone Active Skeleton: An Si-O-Si backbone with interfacial methyl/organic-modified segments forms an amphiphilic structure. It migrates to air-liquid and liquid-solid interfaces to lower local surface tension, rapidly spreading on low-energy substrates and hydrophobic contaminant zones, reducing crater and orange-peel driven by local tension differences.
• High Active >99.6%: Nearly pure active matter reduces solvent, carrier, and impurity interference with waterborne resin compatibility. Batch-to-batch dosing is more stable, suitable for precise 0.1–0.5% addition.
• Cloud Point 55–65℃: Keeps expected emulsification/dissolution and interfacial behavior stable within common waterborne use temperatures, reusable across dip, drying, and low-temperature film-forming stages.
• Low Dynamic Tension Design: The highlighted "low dynamic tension" enables rapid tension reduction at newly formed interfaces during high-speed spray, roller, and dip coating, outperforming static-tension-only wetting; the low-foam tendency also reduces defoamer antagonism.

Performance Leap: From "Wetting But Foaming" to "Low-Foam Fast Spread" Introducing IOTA 2409 brings the following improvements:

• Substrate Wetting: Improves spreading of waterborne paints on metal, plastic, old coating, and wood, reducing edge retraction and craters caused by poor wetting.
• Leveling and Defect Control: Balances the surface-tension field, suppresses Marangoni convection and Benard-cell tendency, reduces orange peel and pinholes, and improves film flatness.
• Anti-Sag: In vertical, dip, and heavy-coat applications, it supports rheology coordination to reduce sagging and dripping and stabilize film thickness.
• Low-Foam Compatibility: Low dynamic tension with low-foam tendency reduces the burden on defoamers, suitable for high-speed dispersion, spray, and roller processes where air is easily entrained.
• High-Active Saving: Active content >99.6%; 0.1–0.5% of total system already improves wetting and leveling, keeping formulation cost controllable.
• Multi-Resin Versatility: Adaptable to waterborne acrylic, PU, alkyd, and coating systems, reducing the number of dedicated wetting agents.

Application Penetration: From Waterborne Industrial Paint to Printing Paste IOTA 2409 covers multiple waterborne spreading scenarios:

• Waterborne Industrial/Dip Paint: Substrate wetting and leveling on metal parts and dip lines, reducing craters and pinholes.
• Waterborne Wood Coating: Improves penetration and spreading on wood pores and sanded surfaces, reducing orange peel and improving staining uniformity.
• Waterborne PU/Acrylic/Alkyd: Substrate wetting, anti-crater, and leveling in various waterborne resin films.
• Waterborne Printing Paste: Enhances wetting and penetration of color paste on fabric, improving pattern-edge spread and shade uniformity.
• Waterborne Varnish: Reduces surface-tension nonuniformity in coating, improving gloss flatness and reducing fish eyes/craters.
• Carpet Adhesive/Adhesives: Improves wetting coverage on fiber, paper, and porous substrates, enhancing bond uniformity.

IOTA Technical Guide: Direct Use or Solvent Dilution, Trial First

• Application: Add 0.1–0.5% of total system. Use directly or dilute with a suitable solvent before addition, then stir thoroughly for uniform dispersion. Determine the optimum dosage by gradient trials based on resin type, substrate energy, and application speed.
• Addition Stage: Can be added during grinding or letdown. For spray/dip systems emphasizing dynamic wetting, trialize dosing ratio first. When used with defoamer, fix wetting-agent dosage before adjusting defoamer to avoid mutual offset.
• ⚠️ Taboo: High-active >99.6% product may increase surface slip or affect intercoat adhesion if overdosed; do not blindly raise dosage. Cloud point 55–65℃ is only a water-dispersion/use reference; verify under extreme high-temperature storage by trial. Reseal after use to prevent impurity and moisture impact. Compatibility varies greatly among acrylic/PU/alkyd/thickened printing systems; always run a pre-trial.
• Storage: 25kg, 50kg, or 200kg plastic/iron sealed drums; store in a cool dry place at room temperature; shelf life 1 year. Per the supplied note, technical suggestions and data are provided to the best of knowledge without warranty; run a small trial before formal use.

Industry Insight: The core value of a waterborne wetting agent is not "the lower the surface tension the better", but "organosilicone skeleton for low dynamic tension, high-active purity for batch stability, low-foam design for defoamer compatibility, cloud-point adaptation for waterborne process stability". IOTA 2409, with "silicone main component, active >99.6%, cloud point 55–65℃, low dynamic tension, low foam, 0.1–0.5%, anti-crater/orange-peel/pinhole/anti-sag" hard parameters, fills the low-foam fast-spread base link of domestic organosilicone wetting agents in waterborne industrial paint, wood, PU, printing paste, and carpet adhesive. For coating and adhesive manufacturers, it upgrades defect-rework reduction and defoamer-antagonism savings along the path of "hydrocarbon wetting → ordinary silicone wetting → organosilicone low-foam low-dynamic-tension wetting".