Epovion SOL-S 90 is a low-molecular-weight solid bisphenol-A diglycidyl ether epoxy resin supplied as a solid flake, offering high crosslink density, strong adhesion, and good water resistance. It is formulated for use in anticorrosive coatings and laminate applications where a higher epoxide equivalent weight than standard liquid or low-EEW solid grades is required.
Epovion SOL-S 90 Overview
Epovion SOL-S 90 belongs to the family of low-molecular-weight solid bisphenol-A epoxy resins, advanced from liquid diglycidyl ether of bisphenol-A to a solid flake form with a substantially higher epoxide equivalent weight. This advancement step increases the molecular weight and crosslink density achievable in the cured film, which is what gives Epovion SOL-S 90 its high bond strength, chemical resistance, and water resistance relative to unmodified liquid epoxy resin.
Because the resin is supplied as a light-colored solid flake, it is well suited to dissolving into varnish-form resin solutions at controlled solids content for spray, dip, or roller application in industrial and protective coating systems.
Key Features
- Low-molecular-weight solid bisphenol-A chemistry: Epovion SOL-S 90 is a solid flake diglycidyl ether of bisphenol-A epoxy resin.
- High crosslink density: The advanced molecular weight supports strong, dense cured film structure.
- Strong adhesion: The resin delivers excellent adhesion to metal and mineral substrates.
- Good water resistance: Cured films retain integrity under prolonged moisture exposure.
- High flash point: A flash point of 200°C minimum supports safer handling and processing.
Typical Applications
Epovion SOL-S 90 is primarily used in anticorrosive and industrial protective coatings, where it is dissolved into solvent-based varnish solutions and cured with polyamide or polyamine hardeners to form dense, chemically resistant films for steel and concrete protection. It is also widely applied in laminates, where its high crosslink density and water resistance support structural and electrical performance.
Beyond anticorrosive coatings and laminates, the resin is suitable for can and coil coating primers and other applications requiring a higher-EEW solid resin than standard grades. For applications requiring built-in flame retardancy, formulators may wish to evaluate Epovion SOL-S 40 alongside this grade.
Technical Specifications
- Chemical type: Diglycidyl ether of bisphenol-A (BPA epoxy resin)
- Physical state: Solid flake
- Epoxide equivalent weight: 450-500 g/eq
- Color (FE-CO): 1 max
- Softening point: 64-74°C
- Solution viscosity (25°C): 100-140 cps
- Density (25°C): 1.18 g/cm³
- Flash point: 200°C minimum
- Function: Epoxy resin binder for anticorrosive coating and laminate solution systems
Molecular Weight Advancement & Coating Performance
Epovion SOL-S 90 is produced by reacting liquid bisphenol-A epoxy resin with additional bisphenol-A under controlled conditions, advancing the molecular weight from the low-EEW liquid starting point up to the 450-500 g/eq range that defines this solid grade. This advancement process is what differentiates Epovion SOL-S 90 from unmodified liquid epoxy resin: as molecular weight increases, the number of hydroxyl groups along the backbone rises as well, improving adhesion to polar substrates such as steel and concrete while also increasing the crosslink density achievable once the resin is cured with an amine or polyamide hardener.
This combination of higher hydroxyl functionality and crosslink density is particularly valuable in anticorrosive coating formulations, where long-term water and chemical resistance depend on a tightly crosslinked, low-permeability film. The resin’s solid flake form and controlled solution viscosity of 100-140 cps also make it straightforward to dissolve into ketone, aromatic, or glycol ether solvent blends at the solids content required for spray or brush application.
Storage Recommendations
- Store in the original, tightly sealed container, protected from moisture.
- Recommended storage: room temperature, away from direct sunlight and heat sources.
- Shelf life: Up to 12 months in the original, unopened packaging when stored under recommended conditions.
- Avoid prolonged exposure to elevated temperatures, which can cause caking or premature advancement of the resin.
Documentation & Compliance
Each shipment of the product is supported by standard quality and compliance documentation to help customers manage incoming inspection, formulation approval, and downstream regulatory reporting.
- Certificate of Analysis (COA): Provided per batch
- Safety Data Sheet (SDS): Mandatory prior to handling
- Labels: Prepared in accordance with applicable regulations
- Industrial and professional use only
Formulation Guidance
Epovion SOL-S 90 is typically dissolved in ketone, aromatic, or glycol ether solvent blends to form a varnish-type resin solution, with solids content and viscosity adjusted to the target coating process. The resin is generally cured with polyamide or polyamine hardeners in anticorrosive and protective coating formulations, and with phenolic or amine-based curing agents in laminate applications.
Because Epovion SOL-S 90 carries a higher epoxide equivalent weight than standard liquid resin, it can be blended with a lower-viscosity liquid grade to fine-tune overall system viscosity and reactivity without sacrificing the crosslink density benefits of the solid resin. For applications needing a liquid component to aid processing, formulators may wish to evaluate Epovion BPA-L 17 as a complementary liquid resin.
Packaging & Logistics
- Packaging: Approved industrial packaging (25 kg bags standard)
- MOQ: Subject to packaging configuration
- Lead time: Indicative lead time, to be confirmed upon order acceptance
- Incoterms: Quoted case by case
Epovion SOL-S 90: Safety & Handling
Epovion SOL-S 90 should be handled in accordance with standard industrial hygiene practices for solid epoxy resins. Users are advised to review the Safety Data Sheet prior to handling and to implement appropriate personal protective equipment and engineering controls as specified therein, including dust control measures during grinding or handling of the solid resin. As with all solid epoxy resins, small-scale compatibility and cure trials are recommended before full-batch formulation to confirm adhesion, chemical resistance, and processing behavior in the target system.
Safety Data Sheet and destination-compliant labeling information for the product are available upon request. For related epoxy resin options, see also Epovion SOL-S 40 and Epovion BPA-L 17.