Polyether L-35 (Poloxamer 105) stands out among similar nonionic surfactants, with its core advantage lying in the combination of "efficient dynamic wetting, extremely low foam, excellent chemical compatibility, and high safety in use," making it a versatile industrial-grade solution.
Detailed Description: Compared to traditional nonionic surfactants (such as AEO fatty alcohol polyoxyethylene ether series or TX/NP alkylphenol polyoxyethylene ether series), the molecular structure of Polyether L-35 is unique — it is a block copolymer of ethylene oxide (EO) and propylene oxide (PO). This structure endows it with the ability to rapidly reduce surface tension under dynamic conditions, i.e., during spraying, roller coating, or high-speed stirring, it can wet the substrate faster than traditional surfactants, effectively preventing defects such as craters and pinholes, which many traditional products struggle to achieve simultaneously.
The most significant advantage of Polyether L-35 is its "low foaming" characteristic. Traditional nonionic surfactants often generate large amounts of persistent foam during use, affecting production efficiency and final product appearance. In contrast, L-35 provides excellent wetting and emulsifying capabilities while producing minimal foam, making it particularly suitable for applications where defoamers cannot be used or where foam is highly undesirable, such as jet dyeing, high-pressure cleaning, and metalworking fluid circulation systems. This makes its advantages extremely prominent in industrial cleaning and textile dyeing and printing fields.
In terms of chemical compatibility and safety, Polyether L-35 also performs excellently. It can maintain stable activity in environments with a wide pH range (acid and alkali resistance) and high electrolyte concentrations (such as hard water), whereas many ordinary nonionic surfactants are prone to deactivation or precipitation under such harsh conditions. Additionally, it is classified as non-hazardous, non-toxic, and non-irritating to the skin, and can replace alkylphenol polyoxyethylene ethers (APEOs) which pose potential environmental risks, making it a more environmentally friendly and safer sustainable formulation choice.
Technical Parameter Comparison (Note: The following comparison data is based on the product database of Guoli Chemical and general chemical knowledge; typical values for similar products are for reference only):
| Comparison Indicator |
Polyether L-35 (Guoli Chemical) |
Traditional Nonionic Surfactant (e.g., AEO-9) |
Alkylphenol Type (e.g., TX-10) |
| Ionic Type |
Nonionic (EO/PO block polyether) |
Nonionic (fatty alcohol polyoxyethylene ether) |
Nonionic (alkylphenol polyoxyethylene ether) |
| HLB Value |
18~23 |
Approximately 13~14 |
Approximately 13.5 |
| Cloud Point (1% aqueous solution) |
73~77 °C |
Approximately 60~65 °C |
Approximately 65~70 °C |
| Foaming Characteristics |
Low foaming |
Medium to high foaming |
Medium to high foaming |
| Dynamic Wetting Ability |
Excellent |
Good |
Good |
| Alkali/Hard Water Resistance |
Good |
Susceptible to hard water and alkali |
Relatively stable, but with environmental risks |
| Toxicity and Environmental Safety |
Non-toxic, non-irritating to skin, biodegradable |
Non-toxic, slightly irritating |
Toxic to aquatic organisms, can release environmental hormones |
| Active Content |
≥99% |
≥99% (usually) |
≥99% (usually) |
Application Recommendations: Due to its balanced performance, Polyether L-35 is particularly recommended for scenarios with high requirements for foam control, dynamic wetting, and safety, such as:
- Coatings and Inks: As a low-foaming dynamic wetting agent, it can fully or partially replace traditional wetting and leveling agents, spreading quickly during application and avoiding coating defects caused by foam. The recommended dosage is 0.1%~0.5% of the total formulation weight.
- Metalworking Fluids: As an emulsifying and lubricating additive, it stabilizes the system under harsh hard water conditions. The typical dosage is 5%~15% of the concentrate.
- Textile Pretreatment and Dyeing: Used as a penetrant and leveling agent, it prevents clogging in low-foaming jet dyeing processes and shortens wetting time. The dosage is approximately 1~3 g/L.
- High-Pressure and Clean-In-Place (CIP) Cleaning: It exhibits excellent penetrating and detergency capabilities in foam-sensitive cleaning scenarios, making it an ideal main component for formulating environmentally friendly low-foaming cleaning agents.
- Agrochemical Formulations: As a safe and efficient emulsifying and dispersing agent, it improves the spreading and adhesion of pesticides on plant surfaces.
Precautions
- Polyether L-35 is somewhat hygroscopic; after opening the container, it should be sealed as soon as possible and stored at 5°C~40°C.
- Although this product is non-irritating to the skin, due to individual sensitivity differences, it is recommended to wear protective goggles and gloves during prolonged handling.
- When using in formulations, it is advisable to pre-test its compatibility with other components of the system, especially when used in strongly cationic systems.
