Polyether L-61 (CAS No.: 25322-69-4), also known as Poloxamer 181 (Pluronic L-61) or polypropylene glycol (PPG), is a nonionic high-molecular-weight surfactant. Its unique molecular structure consists of hydrophilic polyethylene oxide (EO) segments and hydrophobic polypropylene oxide (PO) segments. This block copolymer configuration imparts excellent interfacial activity and broad compatibility.
As one of Guoli Chemical's core products, Polyether L-61 is specifically designed for industrial systems requiring low foaming, efficient emulsification, and dispersion. It maintains stable performance in acidic, alkaline, and hard water environments, provides good wetting and dispersion for pigments, fillers, and active ingredients, and significantly reduces oil-water interfacial tension to produce uniform and fine emulsions. Notably, it generates very low foam during dynamic operations and possesses certain defoaming capabilities, making it particularly suitable for recirculating pumping or spraying processes.
This product is classified as a slight water hazard substance (WGK 1). Under normal operating conditions, it has low irritation to skin and mucous membranes and meets the requirements of multi-industry green auxiliaries. It is typically packaged in iron drums or IBC totes and should be stored sealed in a cool, ventilated, dry place at 5–40°C.
According to the existing database information, no detailed numerical values are available for the conventional physicochemical parameters of Polyether L-61 (such as HLB value, cloud point, hydroxyl value, molecular weight, pH range, density, viscosity, etc.). To obtain a complete technical data sheet (TDS), it is recommended to contact the Guoli Chemical Technical Department for the latest batch inspection report.
1. Polyurethane Foam Industry — Used as a combined stabilizer and cell opener for flexible and rigid foams, regulating bubble nucleation and growth during foaming to produce fine and uniform cell structures, preventing collapse and coalescence; it also promotes complete emulsification of polyols with blowing agents, flame retardants, and other components, improving material flowability and enhancing the thermal insulation and compressive strength of rigid foam.
2. Industrial Defoamers — Acts as an active defoaming and foam-inhibiting component, quickly breaking down fine foam, widely used in foam control processes for coatings, adhesives, papermaking, and wastewater treatment.
3. Water-Based Metalworking Fluids — Provides auxiliary functions of lubrication, anti-foaming, and corrosion inhibition, imparting boundary lubrication effects while effectively suppressing foam generated during high-pressure circulation and spraying, extending fluid life and improving machined surface quality.
4. Textile Printing and Dyeing Auxiliaries — Used as a low-foaming wetting agent and leveling agent with extremely low foam and excellent wetting and penetration capability, helping dye baths quickly wet fabrics, promoting uniform dye uptake, reducing color differences and streaks, and enhancing dyeing quality.
5. Pesticide Formulations — As an efficient emulsifying and dispersing agent, improves the dispersion and emulsion stability of oil-soluble pesticides in water, forming stable emulsions or suspensions, enhancing the spreading and penetration capacity of the spray solution, and improving field application efficacy.