Toynol® FS-640 Acetylenic Diol Polyether
Toynol® FS-640 Acetylenic Diol Polyether High-Efficiency Foam-Control Wetting Agent
Abstract
Toynol® FS-640 is a nonionic surfactant based on an acetylenic diol polyether structure, developed to address core issues in waterborne systems (such as industrial coatings, photovoltaic coolants, printing inks, and adhesives), including poor wetting, cratering, poor leveling, foam control, and compatibility. Its core function is to efficiently lower the dynamic and static surface tension of the system (e.g., dynamic surface tension of a 0.1% aqueous solution as low as 35.1 dyn/cm) while providing excellent foam-control and foam-suppression performance. Compared with conventional wetting agents, its key advantages are the high efficiency and multifunctionality delivered by its unique gemini structure; it is also APEO-free and environmentally safe, making it a suitable option for high-speed coating, printing, and demanding application environments.
Core Product Information
| Item | Specification |
|---|---|
| Product model | FS-640 |
| Chemical name | Acetylenic diol polyether surfactant |
| CAS No. | 9014-85-1 |
| Appearance (25 °C) | Light yellow to yellow liquid |
| Color (Pt-Co) | 350 APHA (typical 150 APHA) |
| Cloud point | 30-35 °C (typical 32.1 °C) |
| Surface tension (0.1% aqueous solution, 25 °C) | Static: 33.7 dyn/cm; Dynamic: 35.1 dyn/cm |
| Safety note | Non-flammable and non-explosive; mild skin irritant. |
Main Features and Advantages
- Efficient wetting: Its unique gemini structure rapidly and effectively lowers the dynamic and static surface tension of waterborne systems, markedly improving substrate wetting and preventing cratering.
- Excellent foam control: Combines wetting and foam control in one product, with good foam-suppression and deaeration capabilities that reduce foaming problems during production and use.
- Broad compatibility: Shows good compatibility with a wide range of resin emulsion systems and is suitable for complex formulations.
- Environmentally friendly and safe: The product is free of APEO and other hazardous substances and complies with environmental regulations.
Recommended Application Fields
- Waterborne industrial coatings: Used to improve substrate wetting of automotive, industrial equipment, and wood coatings during application, prevent cratering, promote leveling, and enhance coating appearance.
- Photovoltaic coolant: Specifically designed to resolve poor dynamic wetting and excessive foaming of the coolant during photovoltaic wafer cutting, ensuring heat-transfer efficiency and stable system operation.
- Waterborne printing inks and overprint varnishes: Suited to high-speed printing on plastic, film, paper, and other substrates; ensures uniform coating, reduces bubbles, and improves print quality.
- Adhesives: Used to improve the spreadability of waterborne pressure-sensitive adhesives, laminating adhesives, etc. during coating; suits high-speed coating processes and prevents bubble formation.
- Other fields: Includes fountain solutions, paper coatings, leather finishing agents, and any other waterborne system requiring excellent wetting and foam control.
Usage and Recommended Dosage
Suggested dosage reference (based on total formulation):
Note: The specific dosage should be determined by a dose-response study according to actual site conditions.
Addition timing: Add after the other surfactants and polymers and before solid materials such as pigments and fillers, to aid dissolution/dispersion and wetting of solids.
Dilution: It can usually be added directly; consult technical support if pre-dilution is required.
Mixing: After addition, stir thoroughly for 15-30 minutes to ensure uniform mixing. If the system viscosity rises, gentle heating can aid dispersion.
Verification: Take samples to test finished-product performance and confirm it meets requirements.
| Application scenario | Recommended dosage |
|---|---|
| Waterborne industrial coatings | 0.3% – 0.5% |
| Photovoltaic coolant | 3% – 5% |
| Waterborne printing inks and overprint varnishes | 0.3% – 1% |
| Other fields | 0.3% – 1% |
Safety and Storage
- Safety note: Wear appropriate protective equipment (such as safety goggles and gloves) during handling. On skin contact, rinse with water and soap; if it gets into the eyes, rinse immediately with plenty of water and seek medical attention.
- Storage conditions: Store sealed in a cool, dry, well-ventilated place, away from heat, sparks and open flames.
- Packaging: 25 kg drums, 200 kg drums, 1000 kg drums.
- Shelf life: 2 years from the date of manufacture under the specified storage conditions.
- Transport classification: (Compliant with GB/T 190-2009).
Frequently Asked Questions
Q: Can Toynol FS-640 be used together with anionic or other nonionic additives?
A: Yes. FS-640 is compatible with most anionic and nonionic additives. To ensure formulation stability, however, we recommend a small-scale compatibility test before use.
Q: If the product solidifies or crystallizes at low temperature, has it failed?
A: No, it has not. This is a physical property of the product. Placing it in a warm environment (e.g., above 35 °C) to melt and stirring thoroughly restores it to its original state without affecting performance.
Q: How does FS-640 perform in high-speed coating or printing processes?
A: Excellently. FS-640 effectively lowers dynamic surface tension (35.1 dyn/cm at 6 bubbles/s), meaning it migrates rapidly to newly formed interfaces. This makes it well suited to short-duration high-speed coating and printing applications, ensuring process stability and coating uniformity.
Q: Is this product suitable for low-VOC formulations?
A: Yes. FS-640 itself is a liquid product with no water content and low volatile organic compound (VOC) characteristics, and can be used in environmentally friendly formulations with strict VOC requirements.
Contact Us
- If you need free samples, a detailed technical data sheet (TDS) or a safety data sheet (SDS), or have any technical questions, please contact us at any time:
- Company: Tianjin Hi-Perferal Advanced Materials Co., Ltd.
- Address: No. 2-1, Zhenghua Road, Caozili, Wuqing District, Tianjin
- Technical service hotline: 022-82910362
- Website: www.surfychem.com