Stearylamine Polyoxyethylene Ether AC-1802 (CAS number: 26635-92-7) is a nonionic surfactant prepared by addition reaction of ethylene oxide with stearylamine (octadecylamine) as a starting agent. Its molecular structure contains both ether bonds (-CH₂CH₂O-) and tertiary amine groups. This unique bifunctional structure endows the product with excellent interfacial activity and versatile application potential. At room temperature, the product appears as a white to yellowish paste or waxy solid, convenient for storage and transportation.
The most prominent feature of this product is its ionic characteristic that can switch with pH conditions: it behaves as nonionic in neutral and alkaline environments, with excellent chemical compatibility; when the system turns acidic, the amine group protonates and exhibits cationic properties, significantly enhancing its adsorption capacity on negatively charged substrates (such as fibers, plastic surfaces, and hair). This "smart switching" mechanism enables AC-1802 to deliver targeted outstanding performance under different process conditions.
In terms of core performance, AC-1802 shows five major advantages: ① Excellent emulsification ability, forming stable oil-in-water or water-in-oil emulsion systems at low dosages; ② Good dispersing performance, effectively dispersing solid particles, preventing agglomeration and sedimentation; ③ Outstanding chemical stability, maintaining stable performance over a wide pH range, resistant to acid, alkali, and hard water; ④ Long-lasting antistatic property, suitable for surface treatment of polymer materials; ⑤ Good softening and conditioning functions, forming a lubricating film on fiber and hair surfaces.
1. Plastics and Synthetic Fiber Industry — High-efficiency Internal Antistatic Agent
Suitable for production and processing of polyethylene (PE), polypropylene (PP), polystyrene (PS), and various synthetic fibers. The product can form conductive pathways inside or on the surface of polymers, significantly reducing surface resistivity, preventing static accumulation and dust adsorption, improving processing safety and product cleanliness.
2. Textile and Dyeing Industry — Leveling Agent and Softener
As an important synthetic intermediate for leveling agents and softeners, it can enhance dye penetration and uniformity, reduce color spots, and impart soft, fluffy hand feel to cotton, wool, synthetic fibers, and their blends.
3. Daily Chemical Industry — Conditioning Agent and Emulsifier
Used as a conditioning agent and cream emulsifier in shampoos, conditioners, body washes, and other personal care products, improving wet combability and fluffiness, providing superior emulsion stability.
4. Industrial Emulsification and Dispersion Agent
Widely used in coatings, inks, leather processing, pesticide emulsifiable concentrates, etc., effectively emulsifying oil phase components, dispersing pigments or solid particles, preventing sedimentation and stratification.
5. Metalworking Fluids — Emulsification and Corrosion Inhibition Component
Acts as an emulsifying and lubricating component in cutting fluids, grinding fluids, etc., while also assisting corrosion inhibition, protecting metal surfaces from rust, and helping extend the service life of the working fluid.
6. Mineral Flotation — Collector or Auxiliary Collector
Utilizes selective adsorption of amine groups on specific mineral surfaces to achieve efficient separation, suitable for flotation processes of non-metallic ores such as phosphate rock and potassium salts, enhancing mineral hydrophobicity and bubble attachment ability.
7. Oilfield Chemicals
Used in formulating demulsifiers to promote rapid oil-water separation of crude oil emulsions; also as a corrosion inhibitor component to protect production and transmission pipelines, extending equipment lifespan.
| Parameter | Value/Description |
|---|---|
| Product Name | Stearylamine Polyoxyethylene Ether AC-1802 |
| CAS Number | 26635-92-7 |
| Alias | Stearylamine Polyoxyethylene (2) Ether, PEG-2 Stearylamine, Stearyl Polyether-2, Octadecylamine Polyoxyethylene (2) Ether |
| Ionic Type | Nonionic (cationic under acidic conditions) |
| Appearance (Room Temperature) | White to yellowish paste or waxy solid |
| pH Adaptability | Stable over a wide pH range, resistant to acid, alkali, and hard water |
| Recommended Storage Temperature | 10°C to 40°C |
| Ethoxylation Degree | 2 (EO number = 2) |
When using AC-1802 as an antistatic agent, it is recommended to determine the dosage based on polymer type and processing conditions. Typically, a dosage range of 0.1% to 1.0% (relative to resin weight) can achieve significant antistatic effects. For textile softening finishing, it can be used in combination with other functional auxiliaries, with a recommended working solution concentration of 0.5% to 3%. In daily chemical formulations, due to its cationic characteristics under acidic conditions, it is particularly suitable for weakly acidic shampoo and conditioner systems, with a recommended dosage of 0.5% to 2.0%. When used as an emulsifying component in metalworking fluids, the recommended dosage is 2% to 8%.