Dodecylamine Polyoxyethylene Ether AC-1202 (Laureth-2) is a nonionic surfactant prepared by ethoxylation using fatty primary amine as the starting material. In an acidic medium, the amine group can be protonated to exhibit cationic properties, giving it dual functionality as both a nonionic and cationic surfactant. This product is a colorless to slightly yellow transparent liquid with good fluidity, easy to operate, and can be directly added to the formula system.
In practical applications, there are three main ways to use AC-1202: First, the direct addition method, where the measured AC-1202 is directly added to the oil phase or water phase and stirred for mixing, suitable for relatively simple systems such as industrial cleaners and metalworking fluids; Second, the pre-dilution method, where AC-1202 is first diluted with warm water (40–50°C) to a concentration of 10%–20% before being added to the system, which helps improve dispersion uniformity, especially suitable for low-temperature batching processes; Third, the compounding method, where it is used synergistically with anionic, cationic, or amphoteric surfactants in a certain ratio, leveraging its excellent compatibility to enhance the emulsifying, wetting, and dispersing performance of the overall formula, commonly seen in complex formulations such as pesticide emulsifiable concentrates and textile auxiliaries.
Since AC-1202 exhibits cationic properties upon protonation of the amine group under acidic conditions (pH<5), when the formula needs to utilize its cationic functions (such as fabric softening, antistatic, corrosion inhibition auxiliary, etc.), it is recommended to adjust the system pH to a weakly acidic range to activate this property. Under neutral or alkaline conditions, it mainly exhibits the emulsifying and dispersing functions of a nonionic surfactant.
| Application Field | Recommended Dosage (% of total formula) | Usage Method |
|---|---|---|
| Pesticide Emulsifier | 3%–8% | Mix with pesticide technical material and solvent to prepare emulsifiable concentrate; or compound with other emulsifiers (such as 500#, 600# series agricultural emulsifiers) for preparing water emulsion and microemulsion |
| Textile Dyeing and Printing Auxiliaries | 1%–5% | As an antistatic agent, it can be directly added to the finishing bath; as a softener, it is recommended to be compounded with other softening components, and the working fluid pH should be adjusted to weakly acidic for better effect |
| Industrial Cleaners | 2%–10% | Compounded with alkaline auxiliaries, chelating agents, etc., for hard surface cleaning of heavy grease; can be heated to 40–60°C to enhance degreasing effect |
| Metalworking Fluids | 2%–6% | Directly added as an emulsifier and lubricating component to cutting fluid and grinding fluid formulations; used synergistically with rust inhibitors and extreme pressure additives |
| Leather Degreasing Agent | 1%–3% (working fluid concentration) | Diluted with water for soaking or degreasing processes of raw hides, with temperature controlled at 35–45°C for optimal effect, combined with drum or paddle operation |
| Coating Dispersant | 0.5%–3% of pigment weight | Added during the grinding and dispersion stage, adsorbs on the pigment surface to provide steric hindrance, preventing flocculation and re-agglomeration |
According to the product database of Guoli Chemical, specific technical parameters of AC-1202 (such as HLB value, cloud point, hydroxyl value, pH value, moisture content, etc.) currently have no detailed test data. The following are industry general reference values for Laureth-2 products, for reference only:
| Parameter Item | Industry Reference Range (Laureth-2) | Description |
|---|---|---|
| HLB Value | Approx. 6.0–6.5 | Relatively lipophilic, suitable for W/O emulsion systems |
| Cloud Point | Not applicable (low EO number) | Only 2 moles of ethylene oxide added, does not form micelles in water, no typical cloud point |
| Appearance | Colorless to slightly yellow transparent liquid | From Guoli Chemical product database |
| Ionic Type | Nonionic (cationic under acidic conditions) | From Guoli Chemical product database |