Next-Gen Adhesion Promoter is a critical component formulated to address the unique challenges of modern high-solids and waterborne coating systems, ensuring superior substrate adhesion across a diverse range of demanding applications. This advanced promoter is engineered with a novel silane-based technology that functions through covalent bonding mechanisms, significantly enhancing the interfacial strength between the coating and difficult substrates such as plastics, treated metals, and composites. Its exceptional compatibility is demonstrated by effective performance in both polar waterborne lattices and high-solids polyol/acrylic formulations, preventing delamination and ensuring long-term durability. Key properties delivered include outstanding hydrolytic stability, excellent resistance to humidity, and improved mechanical integrity of the final film. Consequently, it is ideally suited for use in automotive OEM and refinish coatings, industrial maintenance paints, and plastic coatings where robust, permanent adhesion is a fundamental requirement for coating performance and service life.
Item No :
Adhesion PromoterApplication :
For One-component, two-component and baking coatingsSpecial Feature :
Excellent compatibility, flexibility,significantly improves adhesion to metal substrates and water resistance,markedly enhances adhesion between substrate and coating, as well as inter-coat adhesionProduct Overview
Runshine New Materials (Foshan) Co., Ltd. introduces its next-generation adhesion promoter series, a advanced chemical solution engineered to address the critical challenge of substrate adhesion in modern high-solids and waterborne coating formulations. This innovative product line, including epoxy ester and polyurethane types, is designed as a multifunctional additive for one-component, two-component, and baking systems across automotive, industrial, and general metal coating applications. Its core function is to chemically modify interfaces, significantly enhancing the bond between the substrate and the coating film as well as improving inter-coat adhesion. Key technical features comprise excellent compatibility with a wide range of resin chemistries, outstanding promotion of adhesion on difficult metal substrates, and a marked improvement in the overall water resistance of the final coating system without compromising flexibility. These adhesion promoters are synthesized with a tailored molecular architecture to ensure effective performance in low-VOC, environmentally compliant formulations, providing formulators with a reliable solution to achieve robust, durable, and high-performance coatings that meet stringent industry requirements.
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Key Features
✧ Exceptional universal adhesion – Its unique molecular structure provides strong covalent bonding and interfacial wetting, significantly enhancing adhesion to difficult substrates such as metals, plastics, and composites.
✧ Superior compatibility with diverse systems – Engineered for seamless integration into a wide range of one-component, two-component, and baking coatings without causing seeding or stability issues.
✧ Optimized for eco-friendly formulations – Specifically designed to enhance adhesion in high-solids, waterborne, and other low-VOC coating systems, meeting stringent environmental regulations.
✧ Remarkably improved water resistance – The promoter forms a hydrophobic barrier at the coating-substrate interface, effectively protecting against moisture ingress and under-film corrosion.
✧ Excellent flexibility and stress relaxation – Contributes to the coating's elasticity, ensuring long-term durability and resistance to micro-cracking on substrates exposed to thermal cycling or flexing.
✧ Enhanced inter-coat adhesion – Promotes strong bonding between primer and topcoat layers, preventing delamination and ensuring the integrity of multi-layer coating systems.
✧ Long-term durability performance – The stable chemical structure of the cured film ensures lasting performance, maintaining strong adhesion and corrosion protection over the service life of the coating.
Parameter |
Typical Value |
Unit |
Notes |
Appearance |
Transparent viscous liquid with little yellow |
– |
Visual inspection |
Solid Content |
72–75 |
% |
Can be adjusted for formulation |
Viscosity (25°C, Brookfield RV) |
800-8000CPS (25 ℃) |
mPa·s |
Spindle 3, 20 rpm |
Color |
≤2 # (Fe-Co) |
/ |
/ |
Density (25°C) |
1.05–1.15 |
g/cm³ |
Typical value |
Recommended Solvents |
Ethylene glycol monobutyl ether Xylene/Butyl acetate |
– |
For formulation compatibility |
Shelf Life |
12 |
months |
Stored in sealed containers at 5–35°C |
Storage |
Cool, dry place |
– |
Avoid direct sunlight and moisture |
Product Name | Application Mode | Application Field | Key Technical Features | Product Type | Solid Content (≥%) | Viscosity mPa·s/25°C | Acid Value mgKOH/g | Color | Other | Solvent |
ASS983 | Adhesion Promoter | One-component, two-component and baking coatings | Excellent compatibility; significantly improves adhesion to metal substrates and water resistance | Epoxy ester adhesion promoter | 72 | 800 - 2300 | 25 - 45 (solid) | ≤2 | Wide applicability | Ethylene glycol monobutyl ether |
ASS975 | Adhesion Promoter | One-component, two-component and baking coatings | Good flexibility; markedly enhances adhesion between substrate and coating, as well as inter-coat adhesion | Polyurethane adhesion promoter | 75 | 3000 - 8000 | 30 - 50 (solid) | ≤2 | Miscible | Xylene/Butyl acetate |
Applications
Our next-gen adhesion promoter is engineered for high-performance coatings where superior substrate wetting and robust interfacial adhesion are critical, particularly in environmentally compliant formulations.
◊ Primer and one-component baking finishes for metal substrates, including automotive parts, agricultural and construction equipment (ACE) .
◊ Two-component protective coatings and linings for carbon steel, galvanized steel, and aluminum in corrosive industrial environments .
◊ Waterborne industrial and architectural coatings applied over difficult-to-adhere substrates, ensuring long-term durability and water resistance.
Benefits
Key Traits: Advanced epoxy-ester chemistry; designed for integration into one-component (1K), two-component (2K), and baking curing systems; exhibits excellent compatibility with polar resins.
✧Primary Benefits:
Significantly enhances adhesion to difficult substrates such as metals, plastics, and previously coated surfaces by providing a strong interfacial bonding layer, reducing the need for dedicated primers.
Markedly improves the water resistance and overall durability of the coating film by promoting a hydrophobic interface and increasing crosslinking density at the substrate-coating boundary.
Excellent compatibility with high-solid and waterborne resin systems ensures stable formulation, preventing cratering, haze, or seeding, and maintains storage stability in 1K systems.
Offers formulation flexibility by performing effectively across a wide range of curing mechanisms (e.g., polyurethane, epoxy, melamine) without negatively impacting pot life in 2K systems or cure speed in baking systems.
✧Typical Uses:
Adhesion-promoting additive in waterborne industrial and protective coatings for metal substrates where superior corrosion resistance is critical.
Key component in high-solid, compliant coatings for automotive and transportation applications to meet stringent VOC regulations while ensuring durable adhesion.
Universal additive in primers and direct-to-metal (DTM) coatings to simplify formulation architecture and enhance performance in aggressive environments.
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