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Non-Ionic Polymeric Silicone Surfactant
High-molecular-weight, block-polymeric siloxane-polyether surfactant — forms a mechanically tougher residue film that resists wash-off and UV degradation, extending active ingredient field life 30–45%.
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High-Molecular-Weight Architecture for Extended Residual Performance
Non-Ionic Polymeric Silicone Surfactant is built on a higher-molecular-weight, block-polymeric siloxane-polyether architecture rather than the small, single-molecule trisiloxane structure used in most agricultural spreading agents. This structural difference is the product's defining feature: where a small trisiloxane molecule delivers its surface activity quickly but can also be washed off or degrade relatively quickly once deposited, a larger polymeric molecule forms a more physically robust surface film that resists mechanical and weathering removal simply because of its size and chain entanglement, independent of any added film-forming resin.
At 0.03–0.08% v/v, the polymeric surfactant reduces surface tension to approximately 26–28 mN/m — a more moderate reduction than a small-molecule trisiloxane super-spreader — but its practical value lies less in maximum initial spreading and more in what happens after the spray dries: the larger polymer chains create a mechanically tougher residue film on the leaf surface that measurably outperforms small-molecule surfactants in resisting wash-off from rainfall and degradation from UV exposure over multi-day and multi-week periods.
This makes the product function as a genuine sticker-extender in addition to a spreader — a distinct category from products that rely on a separate added resin or polymer component to achieve rainfastness. Field residue testing shows active ingredient retention on treated foliage 30–45% higher than small-molecule trisiloxane adjuvants at 7 days post-application, and the gap widens further at 14 days, which is particularly valuable for residual-activity products such as certain insect growth regulators and protectant fungicides where extended field life is a core efficacy driver.
Because the molecule's surface activity is moderate rather than extreme, application does not require the droplet-size or spray-volume adjustments associated with small-molecule super-spreaders, and the product's larger molecular size also makes it inherently less prone to volatilization-driven drift than very low-molecular-weight surfactant chemistries.
The polymeric structure is compatible with the residual and protectant product classes it is most valuable for — copper- and sulfur-based protectant fungicides, insect growth regulators, and long-residual insecticide chemistries — and remains low-foaming across standard tank-mix conditions.
Why Molecular Size Matters Here
Mechanism of action
Non-Ionic Polymeric Silicone Surfactant is built from block-polymeric siloxane-polyether chains substantially larger than the single trisiloxane units used in most spreading adjuvants, reducing surface tension to a moderate 26–28 mN/m through the same fundamental surface-orientation mechanism, but at a molecular scale that changes what happens after the spray dries.
Once deposited on the leaf, the larger polymer chains entangle with each other and with the leaf surface, forming a physically tougher, more cohesive residue film than the thin monolayer a small trisiloxane molecule leaves behind — this mechanical toughness, not a separate added chemistry, is what resists mechanical wash-off from rainfall.
The same larger molecular size also reduces the surfactant's tendency to volatilize or drift as fine aerosol compared to smaller, more volatile surfactant chemistries, and slows UV-driven degradation of the residue film compared to smaller molecules that break down more readily under sustained sunlight exposure.
Retention advantage over small-molecule trisiloxane surfactants widens progressively from day 3 onward.
Product specifications
| Parameter | Value |
|---|---|
| Appearance | Clear to slightly viscous liquid |
| Structure | Block-polymeric siloxane-polyether copolymer |
| Viscosity (25°C) | 200 – 400 cSt |
| Density (25°C) | 1.02 – 1.06 g/cm³ |
| Molecular weight (relative) | Significantly higher than trisiloxane surfactants |
| Flash point | > 105°C |
| pH (1% aq.) | 5.5 – 7.5 |
| Storage stability | 24 months (cool, dry) |
Performance data
- 2021
Company Establishment
- 10000m²
Advanced Factory
- 50+
Exporting Country
Our Certifications
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Performance benchmark
| Property | This polymeric surfactant | Small-molecule trisiloxane | Trisiloxane + separate sticker |
|---|---|---|---|
| Molecular architecture | High-MW polymeric | Small-molecule trisiloxane | Trisiloxane + added resin |
| 7-day residue retention | +30–45% advantage | Baseline | Comparable to this product |
| Requires separate sticker additive | No | Yes, for extended life | No (built-in) |
| Initial spreading intensity | Moderate | Extreme | Moderate |
| Application equipment needs | Standard | May require adjustment | Standard |
Residual product field life performance
Source: residual-activity product field trials, 2024–2025.
Tank-mix compatibility
Fully compatible Test before full mix
Dilution calculator
Enter your spray tank volume to estimate the recommended dose (0.05% v/v typical).
How to apply
Safe use guidelines
- Personal protection — Wear gloves and eye protection during mixing.
- First aid — Rinse skin/eyes with water; if ingested, seek medical advice.
- Storage — Keep sealed, cool, and dry, away from direct sunlight.
- Environmental — Biodegradable; low aquatic toxicity.
- Disposal — Dispose of containers per local regulations; do not contaminate water sources.
- Shelf life — 24 months in unopened original container.
Crops & use cases
- Protectant fungicide programs — copper/sulfur-based products needing extended field life.
- Insect growth regulator programs — residual insect control across extended intervals.
- Orchard & vineyard programs — extended-interval disease and pest management.
- Rain-prone growing regions — programs where wash-off resistance is a recurring concern.
Also used where growers specifically want to extend spray intervals to reduce application trips without sacrificing residual protection.
Why it outperforms
- Longer field life, no extra product — built-in sticker function without a separate resin additive.
- Proven retention advantage — 30–45% better 7-day residue retention than small-molecule surfactants.
- Lower drift tendency — larger molecular size reduces volatilization compared to small molecules.
- Standard application — no specialized equipment needed despite the extended-life benefit.
Application guidelines
- Best-fit products: select for residual fungicides, IGRs, and long-residual insecticides specifically
- Extended intervals: consider lengthening spray intervals where this surfactant's retention allows it
- Tank mixing: standard mixing procedures apply; no special order requirements
- Rain-prone timing: particularly valuable ahead of forecast rain given its wash-off resistance
Packaging & shelf life
- Packaging: 1 L, 5 L, 20 L, 200 L drums / IBC totes.
- Storage: cool, dry, away from direct sunlight; 5–40°C.
- Shelf life: 24 months in unopened original container.
Global quality benchmarks
| Test item | Standard requirement | Our performance |
|---|---|---|
| Surface tension (0.1%) | ≤ 30 mN/m | 26–28 mN/m |
| 7-day retention improvement | ≥ 10% | 30–45% |
| Molecular architecture | Not specified | Confirmed block-polymeric |
| Foam height (1 min) | < 25 mL | < 20 mL |
| Biodegradability | OECD 301 | Readily biodegradable |
Frequently asked questions
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Built to last on the leaf, not just spread across it
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