Yudu County, Ganzhou, Jiangxi, China sales3@liwei-chem.com 748718781@qq.com
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Epoxy Resin

    • Product Name Epoxy Resin
    • Chemical Name (IUPAC) 2,2'-[(2,2-bis(4-hydroxyphenyl)propane-1,3-diyl)bis(oxirane-2,3-diyl)]diphenol
    • CAS No. 1675-54-3
    • Chemical Formula (C21H25ClO5)n
    • Form/Physical State Liquid
    • Factory Site Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry sales3@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    310533

    Chemical Composition Bisphenol-A and epichlorohydrin
    Appearance Clear or slightly yellowish liquid
    Viscosity High viscosity
    Density 1.1–1.3 g/cm³
    Curing Time Varies from 5 minutes to several hours
    Mixing Ratio Typically 2:1 or 1:1 (resin to hardener)
    Thermal Resistance Up to 120°C (248°F)
    Adhesive Strength High bond strength to various materials
    Chemical Resistance Resistant to water, acids, and alkalis
    Hardness Shore D: 75–85
    Electrical Insulation Excellent dielectric properties
    Shelf Life 6–24 months (unopened)
    Uv Resistance Low (may yellow on exposure to sunlight)
    Water Absorption Low (<1%)
    Toxicity Irritant; use with personal protective equipment

    As an accredited Epoxy Resin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Epoxy Resin is packaged in a sturdy, 1-gallon plastic container with a sealed screw cap and clear safety labeling for proper handling.
    Container Loading (20′ FCL) 20′ FCL for Epoxy Resin: Typically loaded with 16 MT (drums or IBCs), ensuring safe, secure packaging and optimal space utilization.
    Shipping Epoxy resin is shipped in tightly sealed, chemical-resistant containers to prevent leaks and contamination. Containers must be clearly labeled, handled with care, and protected from heat and direct sunlight. Appropriate documentation, including safety data sheets (SDS), accompanies each shipment in accordance with local and international transport regulations.
    Storage Epoxy resin should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight, heat sources, and incompatible materials like strong acids or bases. Keep the storage area free from moisture, as humidity can cause premature curing. Ensure proper labeling and avoid extreme temperature fluctuations to maintain the resin’s stability and shelf life.
    Shelf Life Epoxy resin typically has a shelf life of 12 to 24 months when stored in sealed containers at cool, dry conditions.
    Free Quote

    Competitive Epoxy Resin prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.

    We will respond to you as soon as possible.

    Tel: +8615365186327

    Email: sales3@liwei-chem.com

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    Certification & Compliance
    More Introduction

    Epoxy Resin: Manufacturing Reliability for Demanding Applications

    Real Quality, Built on Experience

    From the production floor, quality takes center stage in every batch of our epoxy resin. Our hands have mixed, measured, and poured countless times, but each batch receives careful attention because the smallest changes in raw material quality or processing conditions make significant differences down the line. The model we supply, ER-828, stems from consistent feedback and direct dialogue with customers who deal with real-world stresses, heat, impact, and moisture—not just theoretical trials on paper.

    We never overlook the details. Molecule weight distribution, viscosity, and purity levels all impact performance and reliability. Many processors and engineers prefer our formulation because we maintain a stable viscosity range of 11,000-14,000 mPa·s at 25°C and ensure the epoxy equivalent is always within 185-192 g/eq. These numbers are not just specifications for us. They are standards we check daily and trace through every step of manufacturing because we see how tightly controlled properties pay off in downstream curing, strength, and clarity.

    Epoxy that Goes the Distance

    Our epoxy resin finds its way into demanding uses where shortcuts do not work. It makes a name for itself in composite layups, adhesives, coatings, electronics potting, and flooring. Having supplied large construction projects, automotive plants, boatbuilders, and electronics assemblers, we watch this product tackle everything from heavy truck components to clear, impact-resistant decorative floors. With casting and encapsulation work, we receive fewer complaints about shrinkage or surface defects because the formulation’s reactivity window allows better air release and even curing over larger volumes compared to fast-reacting or diluted blends.

    In electrical potting, the necessity for low ionic contamination rings true. We do not rely on recycled raw materials that carry unpredictable halide content, which can lead to corrosion. Instead, rigorous incoming inspections stop problems before they start, and we maintain records from every supply chain stage. These practices do not always show up in an official specification sheet, but in long-term field performance and service records, we see the value in refusing to compromise.

    More Than Generic Chemistry

    A parade of white-labeled or resold resin products flood the market. When customers switch to our epoxy after years with generic imports, conversations revolve around long-term consistency. Discoloration, variable cure times, brittle failure, and fish-eye defects often trace back to irregular raw inputs or unsteady production. In our factory, we stick to a formula proven by practical production and performance testing—not just what’s cheapest. Skilled operators spot shifts in viscosity before sensors give an alarm, preventing defects before packaging begins. This level of control answers directly to the installers, manufacturers, and field repair teams who depend on predictable handling and results.

    Our base model ER-828 does not contain plasticizers, fillers, or reactive diluents. Many mass brands blend in low-cost additives, hoping to mask off-ratio ingredients or thin out bulk to mimic easier workability. We maintain a pure bisphenol-A structure for those who require both chemical resistance and mechanical toughness. Some competitors reduce production costs by cutting down the molecular weight, which creates resins with low viscosity. These often cure into brittle solids or fail in hydrolytic stability, especially outdoors or in marine settings. Every technical improvement builds on honest outcomes, from lab stress testing to reports from installers working under real deadlines.

    Listening and Adapting

    The successful rollout of our resin in new applications often begins with a phone call or a site visit that points out problems not covered by sales brochures. Coating contractors raise concerns about amine blush and water spotting in humid regions. We review real climate chamber tests and suggest fine-grained curing schedules, not just one-size-fits-all advice. Our development team improved the formula’s resistance to humidity-induced blushing by tightening up the epoxide to hydroxyl ratios, using high-purity raw materials to eliminate side reactions that promote clouding or soft cure. Ordinary resins can leave a tacky surface film that powder coaters or boatbuilders must rework—our improved process nearly eliminates this complaint.

    In composite lay-ups for marine and aerospace, resin transparency and UV resistance are critical for appearance and trust in structural performance. We use controlled temperature curing and advanced de-gassing steps in production, resulting in crystal-clear results even at thick cross-sections. This quality means composite panels cure without cloudiness or unpredictable yellowing. Small changes in process—like vacuum stripping dissolved gases—set our product apart. These steps add cost and time, but real-world testing shows cleaner, stronger, and more attractive cured components.

    Hands-on Reliability Testing

    Reliability comes from repeated proof. We partner with long-term customers who share cured samples from critical projects, parts exposed to real vibration, chemical splash, or freeze-thaw cycles. Through these collaborations, we fine-tune the balance between hardness and impact resistance. After a floor installer reported microcracking over a warehouse expansion joint, we reformulated to enhance flexibility without surrendering compressive strength. After electronics manufacturers described breakdown at high temperatures, we raised the glass transition temperature above 120°C, verified by differential scanning calorimetry, and watched returns drop sharply.

    It’s not all smooth sailing. We run into compounders who favor resins with high levels of non-reactive diluents because they pour easily and work fast. These shortcut blends can cut cost for simple bonding, but when the assembly sees vibration or humidity, adhesives shear apart and coatings lift. We stick to purity over speed, and our resin resists hydrolysis, avoids osmotic blistering, and maintains structural bond line strength in most environments. Our real pride comes from products that avoid callbacks, repeated repairs, and warranty headaches.

    Supporting Your Work

    Installers and OEMs want fast, honest answers. We respond with test data from comprehensive performance studies, not just reprinted certificates. Over decades, we’ve seen what matters: gel time control allows installers to spread large batches without rushing. Consistent cure means better color in pigments and reliable electrical insulation values, critical in control panels and windings. Resistance to acids, alkalis, and solvents ensures that finishes last longer, even under tough maintenance routines.

    In our daily work, we regularly produce resins for customers who need to fill very large molds or castings. Heat build-up and exotherm can ruin projects at scale. With our model ER-828, the exotherm curve is slow and predictable. You can pour thick layers without the worry of excessive charring or internal stresses that cause warping. This controlled reactivity means fewer failed projects and better long-term performance in everything from anchor rods to artistic worktops.

    Paints and coatings manufacturers point out the importance of storage stability. We work on batch-to-batch consistency by tightly monitoring water content, which avoids clouding or precipitation on storage. Resins that fail in storage create disruptions in production lines and waste. We have reduced customer complaints about shelf-life by focusing on process humidity and closed-system handling. Proper drum packaging, real moisture barrier liners, and direct shipping limit exposure and preserve quality.

    Comparisons: Beyond Price, Toward Real Value

    At the end of the day, every customer evaluates resins by a mix of price, reputation, and real technical performance. Our product might not be the lowest price upfront, but repair jobs have a way of eating savings from bargain bins. Inferior resins, thinned with low-cost diluents or recycled inputs, often leave problems hidden until stress, time, or weather reveal them. Low-grade materials can creep, craze, or yellow unexpectedly, with repair costs and reputational risk far exceeding initial savings.

    Some imported resins cut quality to win bids, but the real test comes in field performance, faster installation, and complaints avoided. Contractors tell us the resin works consistently batch after batch, eliminating endless re-tuning of mixing ratios and unpredictable work times. Multinational brands sometimes rely on complex supply chains that shift sources without notice. Through local control, we limit these disruptions and respond quickly to feedback and changing needs.

    Artisans and builders pushing creative limits rely on clarity and adhesion. Our resin’s clarity allows wood inlays, deep river tables, or luminous stone artwork to realize their vision—no clouding or unexpected yellow tint. The absence of plasticizers or fillers means inherent hardness and long service life. Our own team uses the product in demonstration projects, allowing us firsthand assurance that it lives up to expectations.

    Practical Support and Training

    For users new to epoxy resin, working with the material can raise questions about mixing, application, and safety. Rather than leaving customers to guess, we offer direct guidance from plant technicians and formulators with decades of hands-on batch experience. We share proven methods for surface preparation, mixing ratios, air release, and safe handling. On jobsites and shop floors, recognizing and preventing issues like improper cure or blush saves untold hours and rework.

    Over time, installers report fewer sticky surfaces, bubbles, or uneven surfaces as they apply our recommendations. We continually update our guides as new field data informs better practices. Field service visits and remote consultation help contractors handle challenging sites, hot weather, or vertical surfaces with confidence. This knowledge sharing, built on actual production and installation experience, is often overlooked by competitors focused only on volume and price.

    For high-volume users, we provide tailored logistics and storage solutions to fit real-world constraints. We closely coordinate production schedules and inventory to avoid delays, offer stable lot numbers for large-scale projects, and provide rapid follow-up when project timelines shift. Small details like batch lot tracking, shelf life planning, and drum selection affect production flow, and our experienced logistics support these day in and day out.

    Innovation Born from Hands-on Work

    Customer challenges drive our improvements. A manufacturer needing faster demold times without sacrificing hardness led to our development of accelerator-compatible grades. Electronics assemblers facing high-density board fill needs prompted low-viscosity variants with optimized filling power. When feedback suggests handling or application issues, we invite technicians to the plant to test adjustments with our production team—no ivory tower development here.

    Over decades, we have seen how innovation grows from honest conversations and field failures, not press releases. Each resin variation stems from hundreds of adjustments, detailed records, and the willingness to invest in raw material purity and process refinement. Product development never happens in a vacuum; it is the result of ongoing partnerships with people who trust us to deliver, project after project.

    In recent years, as demand for safer and more sustainable chemistry grows, we have begun exploring bio-based epoxies. Early versions often suffered from inconsistent cure and weaker resistance. By tightening up our supply sources and manufacturing routines, we incrementally build performance back up to our quality standards. Sustainable chemistry works only if it holds up in the field, so every development step returns to fatigue cycling, impact tests, and real performance metrics, not just claims.

    Steady Growth through Trust Built Over Time

    Manufacturing epoxy resin is not an anonymous, automated process. Our staff’s day-to-day attention, each test report, and every adjustment add up. Lab measurements on viscosity and cure speed run right alongside tool checks, human inspection, and equipment maintenance records. Direct feedback from jobsites—good and bad—guides our next batches. We field service requests when customers try new mold sizes, application techniques, or specialty pigments. Our strong emphasis on traceability takes time and attention but ensures installers and OEMs know exactly what they are working with.

    Resin might look simple in a drum, but every pour reflects years of data, operator judgment, and continuous adjustment. Most problems—unexpected shrinkage, surface defects, poor outdoor life—trace back to overlooked details in production or ignored feedback. We view quality as a daily practice, not a checklist or slogan. Field reports, reliable testing, and direct customer voices keep standards where they need to be.

    Why Our Epoxy Resin Stands Out

    Value shows through in reliability. Our epoxy resin has earned a reputation with builders, artists, fabricators, and engineers not through marketing words but through performance in the field. Our tightly controlled formula stays flexible in application, strong in structure, and clear in appearance. Each lot meets the expectations of demanding users because every critical step, from raw material selection to packaging, gets a responsible touch. We see good chemistry and good manufacturing as inseparable.

    In a marketplace crowded with lookalike products, promises matter less than results. We have built our business on the results: fewer callbacks, better performance, honest answers, and products that do what they say, job after job, year after year.