Epovion BPA-L 12G is a high-purity, low-color liquid bisphenol-A epoxy resin manufactured from bisphenol-A and epichlorohydrin, formulated with reduced color and total chlorine content for environmentally sensitive and light-colored end uses. As a standard-viscosity base resin, Epovion BPA-L 12G delivers maximum mechanical strength, good chemical resistance, and excellent heat resistance once cured, making it a versatile building block for laminates, filament winding, encapsulation, tooling, coatings, and adhesives.
Epovion BPA-L 12G Overview
Epovion BPA-L 12G is produced through the reaction of bisphenol-A with epichlorohydrin, yielding the diglycidyl ether of bisphenol-A as the primary reactive species. Compared with general-purpose grades in the same viscosity class, Epovion BPA-L 12G is refined to a lower color index and reduced total chlorine content, which supports applications where visual clarity, minimal yellowing, and lower ionic contamination are important selection criteria. This makes Epovion BPA-L 12G particularly well suited to light-colored or unpigmented systems, and to formulations destined for markets with stricter environmental or purity expectations.
Despite this refined purity profile, the resin retains the same reactive epoxy group chemistry as standard bisphenol-A liquid resins, allowing it to be cured with the full range of conventional amine, anhydride, and polyamide curing agents. Formulators can substitute it into existing bisphenol-A epoxy formulations without reformulating cure schedules, while gaining the benefit of a cleaner, lower-color base resin.
Key Features
- Low Color and Reduced Total Chlorine: Epovion BPA-L 12G is refined for a lower color index and reduced total chlorine content, supporting light-colored, low-ionic-contamination, and environmentally sensitive applications.
- High Purity Bisphenol-A Chemistry: Manufactured from bisphenol-A and epichlorohydrin, Epovion BPA-L 12G provides a consistent, well-characterized epoxy equivalent weight for predictable stoichiometric formulation.
- Maximum Mechanical Strength When Cured: Cured systems based on Epovion BPA-L 12G exhibit high mechanical strength, good chemical resistance, and excellent heat resistance across a broad range of curing agent chemistries.
- Broad Formulation Compatibility: Epovion BPA-L 12G is compatible with common amine, polyamide, and anhydride curing agents, supporting straightforward substitution into existing epoxy systems.
- Versatile Processing Options: The resin’s standard viscosity supports casting, laminating, filament winding, and coating application methods without extensive reformulation.
Typical Applications
Epovion BPA-L 12G is widely used in laminates, filament winding, encapsulation, civil engineering, tooling, coatings, and adhesives, where its combination of standard viscosity and high-purity, low-color profile supports both structural and appearance-sensitive applications. In electrical and electronic encapsulation, the reduced total chlorine content of Epovion BPA-L 12G is particularly valued, as lower ionic chloride levels reduce the risk of long-term corrosion of embedded conductive components.
In coatings and adhesives, its low color helps formulators achieve clear or lightly tinted finishes without the yellow cast sometimes associated with standard-purity bisphenol-A resins, particularly in systems designed for extended outdoor or high-visibility service. Civil engineering and tooling applications benefit from the resin’s balanced mechanical strength and chemical resistance once cured, supporting demanding structural and repair applications.
Technical Specifications
- Chemical Type: Bisphenol-A Diglycidyl Ether (liquid epoxy resin)
- CAS No.: 25068-38-6
- Physical State: Liquid
- Epoxy Equivalent Weight: 184-190 g/eq
- Color, Gardner: ≤1.0
- Viscosity: 12,000-15,000 cps at 25°C
- Density: Approximately 1.16 g/cm³ at 25°C
- Flash Point: ≥150°C
- Hydrolyzable Chlorine: ≤1000 ppm, refined for reduced total chlorine content
- Supply Form: Liquid
Civil engineering and infrastructure repair projects using standard bisphenol-A liquid epoxy resins often specify a defined pot life and open time to accommodate field mixing conditions, which can vary significantly from controlled factory environments. Ambient temperature, humidity, and substrate temperature all influence how quickly a given resin-hardener combination reaches workable viscosity limits, so contractors typically run a small on-site test batch before large pours or applications, particularly in unfamiliar climates or seasons.
Storage Recommendations
Epovion BPA-L 12G should be stored in tightly sealed containers at ambient temperature, away from moisture and direct sunlight, to maintain its low-color, high-purity specification over its shelf life of at least 12 months. Like other bisphenol-A liquid epoxy resins, Epovion BPA-L 12G can partially crystallize at lower storage temperatures; should this occur, gentle warming to 50-60°C with stirring will restore the resin to a clear, homogeneous liquid without affecting its epoxy content or purity.
Because this grade is valued for its low color and reduced ionic chloride content, users in electronics-grade or light-colored coating applications should avoid prolonged storage at elevated temperatures, which can gradually increase color development even in high-purity resin grades. Standard carbon steel or stainless steel storage and transfer equipment is generally suitable, provided containers are kept clean and free of contamination from prior products.
When qualifying any new lot of liquid epoxy resin for a light-colored or electronics-grade application, many formulators run a small trial batch first, checking initial color, gel time with their chosen curing agent, and cured film clarity before committing to full-scale production. This is especially useful when switching resin suppliers or grades within the same viscosity class, since even resins meeting the same nominal specification can show subtle differences in cure profile or long-term color stability under heat or UV exposure. Keeping a simple record of incoming lot color and post-cure appearance over time helps formulators catch any gradual drift in raw material quality before it affects finished product appearance.
Packaging & Transport
Epovion BPA-L 12G is available in standard steel drums as well as bulk tote and tank shipments for larger-volume customers, with packaging selected to protect the resin’s low-color, high-purity specification throughout transport and warehousing. Customers with specific pack-size, labeling, or bulk logistics requirements are encouraged to contact our sales team to discuss the most suitable supply arrangement for their operation.
Epovion BPA-L 12G: Safety & Handling
As with other bisphenol-A epoxy resins, it should be handled with chemical-resistant gloves and eye protection to minimize skin and eye contact, since uncured epoxy resins can cause sensitization with repeated or prolonged exposure. Adequate ventilation is recommended in mixing and dispensing areas, particularly when Epovion BPA-L 12G is combined with reactive amine or anhydride curing agents.
Formulators choosing between Epovion BPA-L 12G and the standard coating-grade Epovion BPA-L 17E should weigh the relative importance of low color and reduced chloride content against viscosity and cost considerations, selecting the grade that best matches their end-use purity and appearance requirements. Operators should always review the current Safety Data Sheet before handling Epovion BPA-L 12G for the first time.