Octadecylamine polyoxyethylene ether AC-1815 (EO number = 15) is a classic grade in the Guoli Chemical AC series. Compared to other products in the same series, such as AC-1810 (EO=10), AC-1812 (EO=12), AC-1820 (EO=20), and AC-1830 (EO=30), the ethylene oxide addition number of AC-1815 is precisely at the critical region where hydrophilicity and lipophilicity are balanced. Products with lower EO numbers, like AC-1810\/1812, are too lipophilic, limiting water solubility and dispersion speed. Products with higher EO numbers, like AC-1820\/1830, have excellent water solubility but reduced emulsification and penetration capabilities for oils and waxes. AC-1815 achieves the optimal balance in this contradiction, quickly dissolving in water to form a stable emulsion while maintaining strong adsorption and emulsification on various hydrophobic substrates.
Compared to other similar products, AC-1815 exhibits a unique "low foam, high-efficiency wetting" characteristic. Most nonionic surfactants introduce a large amount of foam while enhancing emulsifying power, causing issues in processes like high-speed stirring and high-pressure spraying. However, due to its moderate polyoxyethylene chain length, AC-1815 generates significantly less foam than more hydrophilic grades like AC-1820\/1830, while ensuring excellent wetting and spreading properties, making it more suitable for processing systems sensitive to foam. Additionally, AC-1815's triple chemical tolerance (acid resistance, alkali resistance, and hard water resistance) is particularly outstanding in practical applications. It maintains high activity even in high-temperature acidic dye baths or high-hardness water environments without precipitation or decomposition, a stability level that is leading among similar products.
In terms of ionic property conversion, the amine activity of AC-1815 is precisely preserved due to the moderate shielding effect of its EO chain. It can convert to a cationic form under acidic conditions, imparting excellent adsorption and soft conditioning effects to substrates. This is unmatched by products with excessively high EO numbers (e.g., AC-1860), as overly long polyoxyethylene chains severely weaken the amine's cationization ability and adsorption strength on negatively charged surfaces. Therefore, in application scenarios requiring both nonionic emulsification and cationic conditioning (e.g., textile leveling agents, metal antirust fluids, shampoo and hair care products), AC-1815's comprehensive performance far exceeds that of other grades in the same series.
The following is a key performance comparison between AC-1815 and other main products in the series (some parameters are derived from typical values and are for reference only):
| Product Model | EO Addition Number | Appearance | Hydrophilic-Lipophilic Balance Tendency | Water Solubility | Foaming Characteristics | Leveling and Migration Ability | Cationization Activity |
|---|---|---|---|---|---|---|---|
| AC-1810 | 10 | Light yellow to yellow waxy solid | Lipophilic | Dispersible\/Milky | Low foam | Medium | Strong |
| AC-1812 | 12 | Light yellow to yellow | Lipophilic | Dispersible | Low foam | Good | Relatively strong |
| AC-1815 | 15 | Light yellow waxy\/paste | Hydrophilic-lipophilic balance | Easily soluble\/Clear to slightly turbid | Low foam | Excellent | Moderately strong |
| AC-1820 | 20 | Light yellow to yellow | Hydrophilic | Easily soluble\/Clear | Medium foaming | Good | Relatively weak |
| AC-1830 | 30 | Light yellow to yellow | Strongly hydrophilic | Very easily soluble\/Clear | More foaming | Average | Weak |
| AC-1860 | 60 | Light yellow to yellowish-brown solid | Extremely hydrophilic | Very easily soluble\/Clear | Significant foaming | Weak | Very weak |
(The above performance data is a comprehensive evaluation based on product database information and general patterns. For specific parameters, please refer to Guoli Chemical's actual test reports.)