L-62 Poloxamer (Poloxamer 182) is a nonionic block copolymer surfactant that appears as a colorless to slightly yellow transparent oily liquid at room temperature, exhibiting good fluidity and pumpability, facilitating metered addition in industrial continuous production. Due to its unique polyoxyethylene-polyoxypropylene block structure, this product possesses three core characteristics: low foaming and foam control, efficient wetting and dispersion, and strong chemical stability, with usage methods varying across different application scenarios.
In practical operations, L-62 can be directly added to aqueous or oil-phase systems and mixed evenly by stirring. For scenarios requiring precise dosage control (e.g., emulsion polymerization, pesticide formulations), it is recommended to pre-dilute it with an appropriate amount of water or solvent to a concentration of 10%–20%, then slowly add it to the system while continuously stirring to ensure uniform dispersion. This product remains highly stable under acidic, alkaline, and hard water conditions and can be directly used in complex water systems.
| Application Field | Recommended Dosage (% of total formulation) | Usage Method | |||
|---|---|---|---|---|---|
| Automatic Dishwasher Rinse Aid | 5%–15% | Compound with chelating agents, cosolvents, etc., and mix directly to reduce the surface tension of rinse water, achieving spot-free and quick-drying results | |||
| Hard Surface Cleaner | 0.5%–3% | Add to the aqueous phase together with surfactants and auxiliaries, stirring evenly to enhance penetration and wetting effects | |||
| Metalworking Fluids (Cutting/Grinding Fluids) | 0.5%–2% | Can be directly added to the working fluid for circulation or prepared as a concentrated solution and then diluted, providing low-foaming wetting and cooling functions | |||
| Agrochemical Emulsifier/Wetting Agent | 2%–8% (emulsifier); 0.05%–0.5% (wetting/spreading agent, based on diluted solution) | First mix L-62 evenly with the oily pesticide active ingredient, then add water for phase inversion emulsification; when used as a wetting agent, add directly to the diluted solution | |||
| Emulsion Polymerization Emulsifier | 0.5%–3% (based on total monomer weight) | Pre-dissolve in the aqueous phase and add together with monomers to the reactor, helping to control latex particle size and stabilize the reaction system | |||
| Pigment/Filler Dispersant | 0.2%–2% (based on pigment/filler weight) | Add during the grinding and dispersion stage, grinding together with pigments and binders to effectively deflocculate agglomerates, improving color development and storage stability | |||
| Industrial Defoamer (Base Component) | Used directly as a defoamer or compounded with other defoaming components; dosage adjusted based on foam conditions, typically 0.01%–0.1% of total system weight | Can be added before foaming to inhibit foam, or sprayed onto foam surface after foaming to break foam | |||
| Fermentation Defoamer | 0.01%–0.1% | Can be fed batchwise into the fermentation tank to effectively control foam during microbial fermentation, improving aeration efficiency | |||
| Textile Processing Auxiliary | 1%–5% (based on working solution) | Add to the treatment bath for circulation during processes such as leveling and softening finishing | |||
Addition Sequence: L-62 Poloxamer is a nonionic surfactant with good compatibility with anionic, cationic, and other nonionic surfactants. In compounding systems, it is recommended to add it when the aqueous phase temperature reaches 20–40°C, with stirring speed maintained at medium-low levels (200–500 rpm) for sufficient dispersion; high shear forces are not necessary.
Dilution Recommendations: For applications requiring precise dosing, it is recommended to pre-dilute L-62 with deionized water at a ratio of 1:5 to 1:10 to prepare a stock solution for accurate addition. The diluted solution should be used within 24 hours to ensure optimal performance. This product has good dispersibility in water at room temperature; if viscosity increases due to low temperatures, the packaging drum can be warmed to 20–30°C before use.
Formulation Optimization: L-62 has a relatively low HLB value (approximately 7–9) and stronger lipophilic properties. Therefore, when preparing oil-in-water (O/W) emulsions, it is recommended to use it in combination with high-HLB surfactants to enhance emulsification stability. In low-foam cleaning formulations, it can be compounded with nonionic or anionic primary surfactants, utilizing its foam control properties to balance overall foam performance.