In high-speed industrial processes such as water-based coatings, oil-based inks, adhesives, gravure printing, and flexographic printing, conventional wetting agents often suffer from poor substrate adsorption, insufficient spreading, and surface defects such as cratering, pinholes, and edge crawling. However, products with strong wetting properties tend to generate and stabilize foam, making defoaming more difficult.
To address these challenges, the E520 Series and E530 Series hydrophobic silicone-modified organic silicone wetting agents are specially developed to provide an optimized solution for dynamic wetting and foam control systems.
Core Technology: Acetylene diol-modified siloxane
Both product series are based on a polysiloxane grafted with acetylenic diol ethoxylates structure. E520 can replace Tego 4000, and E530 can replace Tego 4100.
- Ultra-low surface tension (~25 mN/m)
- Excellent dynamic wetting performance
- Excellent foam control
The acetylenic diol segment within the molecule provides rapid migration capabilities, while the siloxane segment delivers powerful surface tension reduction, enabling millisecond-level dynamic wetting.
Property | E520 Series | E530 Series |
Molecular Structure | Longer silicone chain + moderate polyether reactivity | Shorter silicone chain + higher polyether reactivity |
Dynamic Surface Tension Reduction Speed | Very fast (suitable for high-speed coating/printing) | Fast (suitable for conventional dynamic processes) |
Wetting & Spreading Performance | Extremely strong, especially for low-energy substrates (plastics, metals) | Strong, suitable for general industrial substrates |
Foaming Behavior | Ultra-low foaming, strong foam suppression | Low foaming, mild defoaming assistance |
Water System Compatibility | Excellent | Excellent |
Recommended Applications | High-speed printing, automatic coating, precision spraying, semiconductor materials | Wood coatings, industrial paints, inks, agricultural formulations, adhesives |
E520: 0.3%–1.0%
E530: 0.1%–0.5%
Storage: 2 years sealed storage
Packaging: 25kg / 200kg drums
● High-speed gravure/flexo printing: Rapidly wets the printing cylinder and substrate at speeds of hundreds of meters per minute, eliminating missed spots and white specks.
● Automated spray coating lines (automotive parts, construction machinery): Spreads instantly upon atomized impact, reducing craters and orange peel.
● Precision electronic coating: Low-foaming and residue-free, ensuring coating uniformity.
● Wood primers/topcoats: Promote penetration, reduce pinholes, and improve leveling.
● Water-based industrial coatings: Improve wetting on old coatings and substrates with slight oil contamination.
● Fountain solutions: Enable rapid spreading and reduce alcohol consumption.
● Pressure-sensitive adhesives: Enhance initial tack and improve coating uniformity.
● Agrochemical additives: Facilitate rapid spreading of the solution on hydrophobic leaves.
The core raw material for the E520 and E530 series is acetylenic diol ethoxylate (gemini acetylenic diol ether), which is itself an excellent type of non-ionic surfactant.
Representative grades (B Series):
Model | Molecular Weight | Appearance | pH | Water Content | Na⁺ Residue |
B100 | 178 | Yellow transparent liquid | 5–7 | ≤0.5% | ≤10 ppm |
B200 | 300 | Yellow transparent liquid | 5–7 | ≤0.5% | ≤10 ppm |
B800 | 460 | Yellow transparent liquid | 5–7 | ≤0.5% | ≤10 ppm |
B1200 | 630 | Yellow transparent liquid | 5–7 | ≤0.5% | ≤10 ppm |
● Extremely low activation threshold for wetting performance
● Excellent dispersing and anti-rewetting properties
● Can be used as a standalone wetting agent or in formulation systems
● Compatible with silicone-based high-performance wetting technologies (core of E520/E530 systems)
● Water-based inks
● Coatings and paints
● Industrial cleaning systems
● Oilfield auxiliary chemicals
● Adhesives and emulsions
High-performance wetting agents can be synthesized in-house by selecting acetylenic alcohol ether raw materials; alternatively, choosing the E520 or E530 series eliminates the synthesis step, providing a ready-to-use solution.
The E520 and E530 series are hydrophobic wetting agents based on alkynediol-modified organosilicon technology. They are designed to meet or even surpass high-end imported products in key performance parameters, including ultra-fast dynamic surface tension reduction at the millisecond level, excellent anti-cratering and anti-edge crawling performance, outstanding low-foaming and defoaming capability, broad compatibility in both water-based and oil-based systems, 100% active content with no solvent formulation, as well as reliable domestic supply with high cost-performance and stable availability.
● Addition method: Can be added during either the grinding or paint mixing stage; stir and disperse thoroughly.
● Start at the lower end of the recommended dosage range and fine-tune based on wetting performance and foaming characteristics.
● High dosage levels (>0.5%) may slightly affect recoatability; for systems with extremely high recoatability requirements, the dosage should be kept within 0.3%.
● Packaging: 25 kg / 200 kg plastic drums
● Shelf life: Store in a sealed container, protected from direct sunlight and rain, in accordance with general chemical storage requirements; shelf life is 2 years.
The E520 and E530 series hydrophobic silicone-modified wetting agents provide a comprehensive solution for modern dynamic wetting challenges.
● The E520 Series is recommended for applications such as high-speed gravure printing, automated spraying, and precision coating.
● The E530 Series E520 is recommended for applications such as general industrial coatings, wood coatings, fountain solutions, and pressure-sensitive adhesives.
Acetylene alcohol ether raw materials (B-series) are recommended for applications such as the in-house development of high-performance wetting agents and use as intermediates.
Wuhan Bolachem New Material Co., Ltd. , as an innovative technology company, it is focusing on the research and development, industrialization and technology application of advanced materials. It has a professional R&D team with doctoral degrees at home and abroad, a complete R&D and application service system, and an advanced cooperative production base.
Bolachem provides a full range of acetylenic diol, silicone, surfactant, and water-based additive products. We are committed to product development and application services in the fields of oilfield additives, photovoltaic cutting, water-based coatings, cleaning, metal processing additives, new energy, etc. Friends from all walks of life are welcome to visit, provide guidance and negotiate business.
Tel: +86-27-85675876
Mobile: +86 18086413361 +86 18258469811
Whatsapp/ Wechat: +86 18086413361
Email: info@bolachemical.com
Website: www.bolachemical.com
Office Address: Room 1503, Building E, Wuhan Living Room, Dongxihu District, Wuhan City, China
