Compared to common OP series nonionic surfactants, OPE-108 (n≈8-10) has a precisely positioned hydrophilic-lipophilic balance (HLB 13.5), giving it both excellent water solubility and strong emulsifying ability for organic oil phases. Many low-EO (e.g., n=4-6) products have strong penetration but insufficient water solubility, while high-EO (n>15) products have good water solubility but reduced emulsifying power and higher foam. OPE-108 falls exactly in this balanced range, enabling it to achieve multiple functions of wetting, emulsification, and dispersion with a single additive in media such as paint pastes, industrial cleaning agents, and adhesives, thereby reducing formulation complexity and cost.
In terms of process operation performance, the cloud point (61-67°C) and low foam tendency (initial foam height approx. 110 mm, drops to approx. 85 mm after 5 minutes) of OPE-108 make it especially suitable for spray, curtain coating, and high-speed stirring processes that require rapid defoaming. In contrast, many traditional nonionic surfactants (e.g., certain NP/TX series) have more stable foam and longer defoaming time, which can easily cause bubbles or overflow issues during application. Additionally, OPE-108 has better resistance to hard water, acids, and alkalis than some ester or amide surfactants, allowing it to maintain phase stability in metalworking fluids and neutral or weakly alkaline cleaning agents for extended periods, without forming calcium soap precipitates.
From the perspective of application breadth, the product specification of OPE-108 clearly indicates its dual functions of internal and external lubrication and pigment dispersion in plastics/rubber, its use as a wetting agent to enhance interfacial bonding strength in composites, and its spreading and cleaning power in polishing care products. This "multi-functional single agent" characteristic enables it to systematically improve the processing performance and appearance quality of products compared to single-function lubricants or dispersants (e.g., pure waxes, stearates).
| Comparison Item | OPE-108 (Guoli Chemical) | Similar Low-EO Products (n≈4-6, Example) | Similar High-EO Products (n≈15-20, Example) |
|---|---|---|---|
| EO Addition Number (n) | ≈8-10 | Low (≈4-6) | High (≈15-20) |
| HLB Value | 13.5 | Approx. 10-12 | Approx. 15-17 |
| Water Solubility (25°C) | Easily soluble, forms clear solution | Disperses to microemulsion, may appear cloudy | Very easily soluble |
| Emulsifying Power (for mineral oil/aromatic) | High | Medium-High | Medium |
| Wetting Penetration (Canvas Sinking) | Good (≤60 sec, 0.5%) | Excellent (can be <20 sec) | Average (may be >120 sec) |
| Foam (Ross-Miles, 0.25%, 25°C) | Initial 110 mm, 5 min 85 mm (low foam tendency) | Relatively low, quick foam break | Relatively high, stable foam |
| Cloud Point (1% Aqueous Solution) | 61~67 °C | Below room temperature or cloudy | ≥ 90 °C |
| Acid/Alkali & Hard Water Resistance | Excellent, broad compatibility | Good | Good |
| Active Content | ≥ 99% | Most commercial products 98-99% | Most commercial products >99% or contain water |
| Applicable Temperature Range (Process) | Broad, good from room temp to moderate | Prefer low temperature processes | Prefer moderate to high temperature processes |
Note: Data for similar products are typical ranges, depending on manufacturer and batch. OPE-108 parameters are from Guoli Chemical product database.