Okay, based on the technical data from Guoli Chemical, here is an analysis of the core advantages of Octadecylamine Polyoxyethylene Ether AC-1820.
According to Guoli Chemical's technical data, the core advantage of AC-1820 compared to similar products lies in its unique "environmentally responsive" ionic properties - it acts as a nonionic surfactant under neutral and alkaline conditions, and converts to a cationic surfactant under acidic conditions. This characteristic gives it far greater application flexibility and performance than conventional single-ionic-type products.
Detailed explanation as follows:
1. Excellent Application Flexibility
Conventional nonionic surfactants (such as fatty alcohol polyoxyethylene ethers) cannot form strong bonds with negatively charged substrates (such as fibers, metals, minerals) through charge interaction; while conventional cationic surfactants have poor compatibility in non-acidic systems or systems containing anionic auxiliaries. AC-1820 perfectly resolves this contradiction, enabling it to function stably in more complex formulation systems.
2. More Efficient Performance
Due to protonation under acidic conditions, AC-1820 can exhibit an "active adsorption" capability in specific applications, which ordinary nonionic surfactants cannot achieve. For example, in acid dye leveling agents, it not only delays dye uptake but also actively binds to fibers, achieving "migration leveling" that fundamentally eliminates color spots and patches, resulting in superior leveling effects.
3. Broad Process Applicability
Its dual characteristics allow it to function in multi-step processes in a one-bath method, or to be used in systems with a wide pH range, simplifying formulations and processes - something that single ionic type products can hardly achieve.
Specific Data Comparison Advantages
| Performance Feature | Guoli Chemical AC-1820 | Conventional Nonionic (e.g., fatty alcohol ether) | Conventional Cationic (e.g., quaternary ammonium salt) |
| :--- | :--- | :--- | :--- |
| Ionic Property | Nonionic/Cationic (pH-dependent) | Nonionic | Cationic (permanent) |
| HLB Value | 15.4 | 10-15 (variable) | Not applicable, or low |
| Water Solubility/Cloud Point | Easily soluble / >100°C (1% aqueous solution) | Mostly soluble, cloud points vary | Easily soluble |
| Affinity in Acid Bath | Strong (positively charged after protonation) | Weak | Very strong, may cause coagulation |
| Compatibility with Anionic Auxiliaries | Good to moderate | Good | Poor, prone to precipitation |
| Antistatic Property | Durable, wash-resistant | Poor | Good, but may affect color |
| In Acidic Cleaners | Combines emulsification and corrosion inhibition | Only emulsification, cleaning | Strong adhesion, cleaning performance may decrease |
Application Recommendations
* As an acid leveling agent for wool/nylon: It is recommended to adjust the dye bath pH to 4-5, then add 0.5% - 2% (on weight of fabric) of AC-1820 at room temperature, run for 10 minutes, then add the dye. Its migration leveling ability is unmatched by most leveling agents currently on the market.
* In acidic industrial cleaners: The recommended dosage is 2% - 5% of the total formulation weight. It can significantly inhibit the corrosion of hydrochloric acid, phosphoric acid, etc., on carbon steel and copper, which is a key advantage for choosing it.
Precautions
Its cationic property is only "activated" under acidic conditions. If you need cationic effects in alkaline processes, you should choose permanent cationic products. Please follow safety labels during operation and avoid direct contact with skin and eyes.
