Stearyl Amine Polyoxyethylene Ether AC-1802 is a nonionic surfactant (CAS: 26635-92-7) that appears as a white to slightly yellow waxy solid at room temperature. Its melting point is 45~50°C, so it usually needs to be melted or dissolved before use. The most convenient method is to preheat and melt it, then slowly add it to the system under stirring; or dissolve it in hot water or organic solvents (such as ethanol, isopropanol) to prepare a solution of a certain concentration before use. This ensures uniform dispersion in the system, fully exerting its emulsifying, antistatic, or conditioning properties.
The ionic characteristics of this product vary with pH: it is nonionic in neutral or alkaline environments; in acidic systems, the amine group protonates and becomes cationic. Therefore, when needing to enhance its antistatic property or adsorption to negatively charged substrates, the system can be appropriately adjusted to acidic (e.g., pH 4~6) to leverage its cationic characteristics for better performance.
The national standard product database does not have precise dosages for each application field. The following are general recommended ranges based on the chemical characteristics of the product and industry application practices. Actual dosages need to be determined through process trials:
| Application Field | Recommended Dosage (Percentage of Total Formulation or Material Weight) | Usage Instructions |
|---|---|---|
| Internal Antistatic Agent for Plastics/Synthetic Fibers | 0.3% ~ 1.5% | Pre-mix with resin, or add via side feeding, using screw shear to ensure full dispersion. |
| Textile Dyeing and Printing Leveling/Softening Agent | 0.5% ~ 2.0% (Based on Fabric Weight) | When used in acidic dye baths, the cationic characteristics can enhance leveling of dyes and softening effect on fibers. |
| Personal Care (Shampoo/Conditioner) Conditioning Agent | 0.2% ~ 1.0% | Add during the cooling phase of the formulation; weakly acidic formulations (pH 4~5.5) can maximize its adsorption and conditioning capability. |
| Industrial Emulsifying Oil/Metalworking Fluids | 2% ~ 5% (As Main Emulsifier Component) | Compounding with other emulsifiers such as oleic acid soap yields better results, enhancing emulsification and corrosion inhibition of base oils. |
| Pesticide Emulsifiable Concentrate/Coating/Ink Dispersant | 1% ~ 5% | Used for emulsifying oil phase or wetting and dispersing pigments to prevent particle agglomeration and sedimentation. |
| Mineral Flotation Collector | 0.05 ~ 0.5 kg/ton of Raw Ore | Dosage depends on ore grade and pulp density; need to determine through flotation process condition trials. |
Dispersion/Dissolution Tips: It is recommended to pre-dissolve AC-1802 in hot water above 60°C with stirring, or melt and add it to the oil phase before mixing with other components. Due to the product's HLB value of only 4.5, its hydrophilicity is relatively weak. When used alone as an oil-in-water (O/W) emulsifier, it usually needs to be compounded with a high-HLB emulsifier for better emulsion stability.
Compounding Synergy: In metalworking fluids or industrial cleaning formulations, it can be compounded with anionic surfactants (such as sodium petroleum sulfonate) or other nonionic surfactants to achieve synergistic effects, enhancing the system's emulsification, detergency, and rust prevention capabilities.