| HS Code | 650806 |
| Vinyl Acetate Content | 39 wt% |
| Melt Flow Rate | 600 g/10 min at 190°C / 2.16 kg |
| Density | 0.970 g/cm³ |
| Melting Point | 59 °C |
| Vicat Softening Point | 41 °C |
| Brittleness Temperature | -69 °C |
| Tensile Strength At Break | 4.5 MPa |
| Elongation At Break | 900% |
| Flexural Modulus | 16 MPa |
| Shore A Hardness | 60 |
| Glass Transition Temperature | -36 °C |
As an accredited ExxonMobil EVA 60039.EH2 EVA Copolymer Resin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | ExxonMobil EVA 60039.EH2 EVA copolymer resin supplied as pellets in 25 kg bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL loaded with ExxonMobil EVA 60039.EH2 resin in 25kg bags on shrink-wrapped pallets, approximately 20 metric tons per container. |
| Shipping | ExxonMobil EVA 60039.EH2 EVA Copolymer Resin ships as solid pellets in multiwall bags or bulk containers. Keep bags dry and avoid direct sunlight, storing in a cool, ventilated area. Not classified as hazardous; use standard dust precautions and avoid prolonged skin contact. Ensure secure palletizing and transport to prevent damage. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep original containers tightly sealed to prevent moisture absorption and contamination. Avoid stacking excessively high to prevent deformation. Maintain temperatures below 30°C (86°F) to preserve resin quality. Use within recommended shelf life for optimal processing and performance. |
| Shelf Life | Store in a cool, dry place away from sunlight. Shelf life is two years from date of shipment if stored properly. |
In hot-melt adhesive compounding for packaging and converting, ExxonMobil EVA 60039.EH2 is introduced as the polar base polymer at 30–45 phr, where the term phr refers to parts by weight per one hundred parts of base resin. The grade’s high vinyl acetate content contributes dipole-dipole interactions with cellulosic and polar film substrates, while melt mass-flow rate in the range of 6.0 g/10 min under ASTM D1238-20 at 190°C/2.16 kg permits controlled pumping through gear-pump-fed slot-die coaters. Formulation ranges in industrial practice couple the EVA with 30–45 phr hydrogenated tackifier resin, 20–35 phr paraffin or Fischer-Tropsch wax, and 0.5–1.0 phr hindered phenolic antioxidant. The compounding sequence is run in a jacketed sigma-blade mixer or static-mixer-equipped vertical melter at 150–180°C, with discharge viscosity held between 1200 mPa·s and 3500 mPa·s at 180°C to maintain transfer coater uniformity. Application temperature at the slot die is typically 160–180°C, open time is controlled between 5 s and 15 s, and compressed nip set time is reduced to 1–3 s on corrugated case lines. Regulatory compliance is anchored to FDA 21 CFR 175.105 for indirect food-contact adhesives and REACH Regulation (EC) No 1907/2006 for placing on the EU market. Terminal product types include corrugated case and carton closing adhesives, bookbinding spine adhesives, film lamination adhesives for flexible packaging, and pressure-sensitive tape backings where a high-polarity tie layer is required. High vinyl acetate content improves adhesion to polyvinylidene chloride-coated cellophane and corona-treated polyester, but it lowers elevated-temperature shear resistance unless the wax-to-tackifier ratio is shifted upward; this operational boundary must be addressed in formulations destined for summer warehouse storage above 50°C.
Film extrusion for photovoltaic encapsulant layers is constrained by the need to maintain stock temperatures below the onset of organic peroxide decomposition, which for common peroxycarbonate initiators requires melt zones not exceeding 95–105°C in the extruder and die. For ExxonMobil EVA 60039.EH2, the compounding line is typically a co-rotating twin-screw extruder with an L/D ratio of 44:1, equipped with liquid-side feed for silane and peroxide masterbatch injection, a vacuum vent at barrel section 7, and underwater pelletizing at water temperatures below 20°C. The cast film line uses a flex-lip flat die with internal deckle, a chill roll set at 12–18°C, and film thickness held at 0.45–0.60 mm. Formulation addition levels are 100 phr EVA 60039.EH2, 0.7–1.2 phr tert-butylperoxy-2-ethylhexyl carbonate crosslinking agent, 0.2–0.5 phr vinyltrimethoxysilane adhesion promoter, 0.3–0.8 phr triallyl isocyanurate co-agent, 0.05–0.2 phr hindered phenolic antioxidant, and 0.1–0.3 phr UV absorber. Premature gel formation from melt-temperature excursions above 110°C produces fisheye defects and reduces film optical transmission; this represents the primary processing failure mode on high-output cast lines operating above 400 kg/h. Lamination in module manufacturing is performed in a vacuum bag laminator with platen temperature ramping from 145°C to 155°C, chamber evacuation to 100–300 Pa, and total cure time of 10–15 min depending on glass-glass thermal mass. Crosslink density is confirmed by solvent extraction, with gel fraction of 70–90% determined according to ASTM D2765-16. The terminal product types are monofacial and bifacial crystalline silicon photovoltaic modules, building-integrated photovoltaic laminates, and thin-film module back encapsulants. The compliance matrix below summarizes test designations applied to the encapsulant layer after lamination.
| Standard designation | Test parameter | Typical requirement |
|---|---|---|
| IEC 61215-1:2021 | Thermal cycling, damp heat, humidity freeze | No major visual defects; insulation resistance maintained |
| IEC 61730-1:2023 | Module safety qualification | Creepage, clearance, and dielectric properties as defined in current edition |
| UL 1703 | Flat-plate photovoltaic module fire test | Class C or higher as required by installation jurisdiction |
| ASTM D2765-16 | Gel fraction by solvent extraction | 70–90% after lamination |
| ASTM D638-14 | Tensile strength and elongation of film | Elongation at break above 400% before cure |
| ISO 4892-2:2013 | Accelerated weathering with xenon arc | No yellowing index shift exceeding product specification |
Because the decomposition exotherm of azodicarbonamide lies approximately 35–45°C above the decomposition onset of dicumyl peroxide, crosslinked EVA foam molding requires staged heat transfer that can sustain the peroxide scorch phase while delaying full blowing-agent decomposition until the melt has built sufficient crosslink-dependent extensional strength. The compound formulation for ExxonMobil EVA 60039.EH2-based foam uses 100 phr EVA, 1.5–3.5 phr azodicarbonamide, 0.6–1.0 phr dicumyl peroxide, 1.0–2.5 phr zinc oxide, 0.5–1.0 phr zinc stearate, and 0–15 phr calcium carbonate for hardness adjustment. Mixing is conducted on a two-roll mill at 105–120°C or in an internal mixer with chamber temperature held at 110°C, then the sheet is pre-cut to mold layflat dimensions. Compression molding is performed in a multi-cavity platen press with 3000 kN clamping force and cavity dimensions up to 1200 mm × 600 mm, at platen temperature 165–175°C, pressure 10–15 MPa, and cycle time 6–10 min. The processing conflict is a skin-core density gradient created by the lag between mold surface heating and internal exotherm, which becomes measurable as a difference of 0.02–0.06 g/cm³ between the outer 2 mm skin and the core when cavity thickness exceeds 20 mm. Regulatory compliance is assessed under REACH Regulation (EC) No 1907/2006 for chemical substance restrictions, with EN 71-3:2019+A1:2021 migration testing required for children’s mats and play surfaces, and RoHS Directive 2011/65/EU applicable where the foam enters electrical enclosure padding assemblies. Terminal product types include footwear midsoles and insoles, sports mats, knee pads, anti-fatigue mats, protective wall padding, and kick boards for swimming instruction. Published data for the specific 60039.EH2 grade in ultra-low-density foam below 0.12 g/cm³ is limited; production evaluations should confirm blowing efficiency on the target press before locking cycle parameters.
At filler loadings above 150 phr, the melt viscosity of EVA 60039.EH2-based halogen-free cable compounds rises sufficiently to require counter-rotating twin-screw equipment with L/D ratios of 40:1 or greater, especially when magnesium hydroxide is used as the primary smoke-suppressing mineral filler. The compound formulation is 100 phr EVA 60039.EH2, 140–180 phr surface-treated magnesium hydroxide or a blend of magnesium hydroxide and aluminium trihydrate, 5–15 phr zinc borate, 0.5–2.0 phr amino silane coupling agent, 0.5–1.5 phr hindered amine antioxidant, and 0.5–1.5 phr dicumyl peroxide. Compounding is run with barrel temperatures 130–160°C, die temperature 120–140°C, and screw speed 250–400 rpm, with a vacuum vent positioned before the final mixing zone to strip adsorbed moisture from the metal hydroxide filler. Cable jacket extrusion is performed on a 90 mm single-screw extruder with L/D 25:1 or 30:1, screen packs of 40/60/100 mesh, and a crosshead die sizing the jacket to 0.8–2.0 mm wall thickness. Peroxide crosslinking is completed in a continuous vulcanization line with tube temperature 180–250°C, line speed typically 20–80 m/min depending on conductor gauge, and final hot-set elongation tested at 200°C under 0.2 MPa load according to IEC 60811-507. The terminal product types include low-smoke zero-halogen sheathing for data cables, building riser cables, automotive wire insulation, and photovoltaic system cabling. Compliance is evaluated under IEC 60332-1-2:2004+A1:2015+A2:2021 for flame propagation, IEC 60754-1:2011 and IEC 60754-2:2011 for acid gas and pH, ISO 6722 for automotive cable construction, and UL 2556 for the North American market. The high vinyl acetate content improves filler wetting and flexibility at low temperatures, but the compound is incompatible with amine-based co-stabilizers because premature ester hydrolysis and amine-catalyzed acetate cleavage cause localized gel spots and an increase in acid gas beyond the pH 4.3 and conductivity limits of IEC 60754-2.
Line speed fluctuations in cast coextrusion are the dominant draw resonance source for polyethylene-based sealant layers containing EVA 60039.EH2 at 80–100 phr, with the balance being metallocene linear low-density polyethylene at 0–20 phr, slip/antiblock masterbatch at 0.1–0.5 phr, and fluoropolymer processing aid at 0.02–0.1 phr. The sealant layer is processed at melt temperature 190–230°C, die gap 1.0–2.0 mm, chill roll temperature 15–25°C, and air gap shortened to reduce neck-in and molecular orientation that raise heat-seal initiation temperature. In blown film coextrusion, the EVA-containing layer is run at blow-up ratio 2.0–2.5 and frost line height 8–15 die diameters to avoid broadband draw resonance and bubble instability. Heat seal initiation for high-vinyl acetate sealant layers typically falls in the 75–85°C range against oriented polyester or aluminum foil under 0.3 MPa jaw pressure and 0.5 s dwell, but published data for this specific 60039.EH2 configuration in coextruded structures is limited; plant trials should verify seal strength according to ASTM F88/F88M-21 on the target packaging line. Food-contact compliance is established through FDA 21 CFR 177.1350 for ethylene-vinyl acetate copolymers and EU Commission Regulation (EU) No 10/2011 for plastic materials intended to contact food, with migration testing conducted under the intended time-temperature conditions. Terminal product types include lidding films for dairy cups, snack food pouches, frozen food films, medical device pouches, and liquid stick-pack laminations. The operational boundary is the reduced thermal stability of high vinyl acetate EVA above 220°C, which requires purging of the sealant-layer extruder before shutdown and avoidance of prolonged residence time in the die.
For masterbatch production, substituting 55–75 wt% of the carrier phase with ExxonMobil EVA 60039.EH2 provides polar acetate functionality that improves pigment wetting and reduces interfacial energy between dispersed pigments and polyolefin matrices. The masterbatch formulation is composed of 55–75 wt% EVA 60039.EH2, 20–40 wt% pigment or functional additive, 1–3 wt% processing aid, and 0–3 wt% internal wax dispersant. Compounding is performed on a co-rotating twin-screw extruder with L/D 32–44, barrel temperature 120–170°C, screw speed 200–500 rpm, and side-fed pigment at the downstream feed port to minimize thermal history. The melt is pelletized through a two-hole die with underwater or water-ring pelletizing; pellet surface moisture is reduced below 0.05 wt% before packaging. Terminal product types include color masterbatches for polyethylene films, carbon black masterbatches for agricultural and geomembrane films, additive masterbatches for recycled polyolefin compounds, and slip/antiblock concentrates for blown film lines. Regulatory compliance includes REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU for electrical and electronic plastic components, and FDA 21 CFR 177.1350 where the masterbatch is used in food-contact polyolefin articles under an appropriate overall migration limit. The high vinyl acetate content limits continuous exposure above 220°C, because acetic acid evolution during thermal degradation can corrode downstream die faces and create odor defects in the final molded part.
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The product designation ExxonMobil EVA 60039.EH2 identifies an ethylene-vinyl acetate copolymer resin within the Escorene Ultra EVA platform. The numeric fragment 60039 is consistent with a nominal vinyl acetate content of approximately 39 wt%; the EH2 suffix designates a specific formulation, additive package, or physical form that must be confirmed against the supplier technical data sheet and lot certificate. In melt-compounding operations, this comonomer level places the resin in the high-VA segment of EVA copolymers, where amorphous phase development reduces crystallinity, lowers the crystalline melting range, increases polarity, and alters density, hardness, heat-seal initiation, and adhesive compatibility relative to lower-VA grades and low-density polyethylene.
Ethylene-vinyl acetate copolymers with 36–42 wt% vinyl acetate exhibit a lower crystalline melting range than EVA grades in the 12–28 wt% range. Differential scanning calorimetry according to ASTM D3418-15 or ISO 11357-3:2018 generally records a broad melting endotherm between 45 °C and 70 °C for high-VA EVA, compared with 70–95 °C for lower-VA film grades. The lower endotherm reduces heat-seal initiation temperature and supports low-temperature sealing layers on coextruded polyolefin structures. The higher vinyl acetate content also increases polarity, which improves wetting and adhesion to glass, aluminium, polyester, and cellulose-based surfaces. Because of the reduced polyethylene crystallinity, the resin retains flexibility and impact resistance at low temperatures, but its hardness and tensile strength are lower than those of high-density polyethylene and lower-VA EVA grades.
In dispersion compounding, EVA 60039.EH2 can be used as a carrier resin for pigment and additive masterbatches where high filler acceptance is required. Higher vinyl acetate content enhances interaction with polar fillers such as calcium carbonate, barium sulfate, and aluminium trihydrate, allowing higher filler loadings before melt fracture or surface roughness appears. The effect is evaluated on production-scale continuous mixers; a laboratory-scale torque rheometer or a co-rotating twin-screw extruder with L/D ratio 30:1 to 44:1 can be used to compare torque and melt pressure. Published data for this specific EH2 configuration are limited, but class-level behaviour suggests that filler loadings above 60 wt% may require elevated processing temperatures and reduced screw speed to avoid thermal degradation.
On a co-rotating twin-screw extruder with an L/D ratio of 40:1 and atmospheric venting, barrel temperatures from 120 °C to 180 °C are typical for high-VA EVA compounding, with exact settings governed by the melt mass-flow rate specified on the certificate of analysis. High-VA EVA grades are not strongly hygroscopic, but surface moisture condensation at relative humidity above 70% can generate splay and surface voids. Pellets exposed to humid air are pre-dried at 60–70 °C for 4–6 h; longer drying at higher temperatures can lead to pellet agglomeration and additive migration. Screw speeds in the range of 200–400 min⁻¹ are common for masterbatch dilution or adhesive compounding, while melt temperatures above 180 °C increase the risk of deacetylation, odour, and amber discoloration. The resin’s high vinyl acetate content reduces melt viscosity at a given melt index relative to polyethylene homopolymer and improves wetting of polar fillers.
Injection moulding of high-VA EVA grades requires lower hold pressures than rigid polyolefin systems because the low-modulus material transmits cavity pressure less uniformly. Mould temperatures from 20–50 °C support ejection; cycle times are influenced by the low melt temperature and the need to avoid part deformation at demoulding. Tooling should incorporate generous draft angles, uniform wall sections, and adequate venting to avoid gas burns from residual volatiles. Clamp force calculations should use projected area and expected cavity pressure; for soft high-VA EVA, cavity pressure may be below 300 bar, but mould-filling simulation should be calibrated with spiral-flow data from the specific lot.
High vinyl acetate EVA copolymers are susceptible to deacetylation when exposed to elevated temperatures for extended residence time. The onset of detectable deacetylation in EVA with approximately 39 wt% vinyl acetate is generally reported between 230 °C and 250 °C under inert conditions, but practical processing limits are lower because oxygen accelerates discoloration and acetic acid evolution. Extruder barrel residence times should be kept below 5–10 min at melt temperatures above 180 °C, and venting or vacuum degassing should be used to remove acetic acid and low-molecular-weight volatiles. Avoid direct combination with high-acid ionomers, anhydride-modified polyolefins, or strongly alkaline mineral fillers unless compatibility and pH stability are verified; residual acidity can corrode downstream metal surfaces and shift organoleptic properties.
Antioxidant packages in high-VA EVA typically contain hindered phenols and phosphites. Slip and antiblock additives used in film grades must be selected for compatibility with the polar ester groups. For long-term thermal aging above 70 °C, additional stabilisation may be required to maintain peel strength and elongation at break. The lot-specific additive package is identified by the EH2 suffix and must be obtained from the safety data sheet before food-contact or medical assessments.
Blown film conversion of high-VA EVA grades differs from LDPE blown film because the melt exhibits lower melt strength and greater tack, which can limit bubble stability at high blow-up ratios. Blow-up ratios of 1.5:1 to 2.5:1 and die gaps between 0.6 mm and 1.2 mm are often used for soft, tacky EVA films; melt temperature is normally held below 180 °C to avoid odour. Frost line height and internal bubble cooling must be adjusted to compensate for the lower crystallization rate. The film’s surface tack can cause blocking during winding; therefore, the EH2 formulation may include antiblock and slip additives. Winding tension should be reduced relative to polyethylene to prevent blocking and core collapse.
Compared with cast film lines running linear low-density polyethylene, high-VA EVA grades exhibit lower neck-in and improved drawdown when melt index is appropriately selected, but the melt curtain may be more sensitive to air gap turbulence. Extrusion coating on paper, aluminium foil, or polyester requires high melt-thermal stability and controlled chill-roll temperature. Chill-roll temperatures below 15 °C can cause surface frost and poor clarity, while temperatures above 30 °C can increase blocking on the winder. Adhesion to aluminium foil is promoted by the polar vinyl acetate groups and is commonly quantified by peel tests under ASTM D1876 or equivalent internal methods.
Adhesive formulators use high-VA EVA copolymers as polymer bases in hot-melt formulations for bookbinding, packaging, and profile wrapping. In combination with tackifier resins and waxes, the 39 wt% vinyl acetate content provides a shift in open time and set time compared with 18 wt% or 28 wt% EVA; higher VA content generally extends open time on polar substrates and improves low-temperature adhesion. Viscosity stability at application temperatures between 160 °C and 190 °C should be monitored because prolonged heating can increase colour and char formation. Batch-to-batch variation in vinyl acetate content and melt index can shift adhesive viscosity and set speed; incoming inspection should include melt mass-flow rate by ASTM D1238-20 and, where possible, FTIR verification by ASTM D5594-18a.
Food-contact suitability for ethylene-vinyl acetate copolymers is evaluated under FDA 21 CFR 177.1350 for US applications and under EU Regulation No 10/2011 as amended, with overall migration limits and specific migration limits depending on the food type and processing history. REACH registration under Regulation (EC) No 1907/2006 is required for EU supply, and RoHS recast 2011/65/EU applies to electrical and electronic equipment components when the material is used as a cable jacket or encapsulation compound. The exact grade may be formulated with slip, antiblock, or antioxidant packages; therefore, a migration calculation under EU Regulation No 10/2011 must use the specific composition disclosed on the safety data sheet and technical data sheet.
Table 1 summarises standard test methods and class-typical values for high-VA EVA copolymers with approximately 39 wt% vinyl acetate. The values are not direct grade specifications and must be verified against the supplier technical data sheet and certificate of analysis for EVA 60039.EH2.
| Property or characteristic | Standard method | Class-typical window for high-VA EVA | Processing or application relevance |
|---|---|---|---|
| Vinyl acetate content | ASTM D5594-18a; supplier internal FTIR or titration | 39 wt% nominal inferred from grade designation | Controls polarity, crystallinity, seal initiation, and adhesion |
| Melt mass-flow rate | ASTM D1238-20; ISO 1133-1:2022 | Not disclosed for this exact grade; broad production range depends on application | Determines extrusion coating drawdown, injection moulding fill, and adhesive viscosity |
| Density | ASTM D1505-18; ISO 1183-1:2019 | 0.95–0.98 g/cm³ for 36–42 wt% VA | Affects yield per unit mass and compound density control |
| Tensile strength at break | ASTM D638-14; ISO 527-2:2012 | 5–15 MPa class range | Indicates mechanical resistance in film, adhesive, and injection moulded parts |
| Elongation at break | ASTM D638-14; ISO 527-2:2012 | 700–1000% class range | Reflects flexibility and cold-formability |
| Shore A hardness | ASTM D2240-15e1; ISO 48-4:2018 | 70–95 | Predicts part softness, seal conformability, and surface tack |
| Vicat softening point | ASTM D1525-17e1; ISO 306:2022 | 45–70 °C | Sets upper service temperature boundary for softened behaviour |
| Melting peak by DSC | ASTM D3418-15; ISO 11357-3:2018 | 45–70 °C | Governs heat-seal temperature and low-temperature processing |
Differences from other products become most visible in adhesive and tie-layer formulations. Compared with EVA grades containing 18 wt% or 28 wt% vinyl acetate, the 39 wt% copolymer increases specific adhesion to polar substrates such as glass, aluminium, and polyester film; however, tensile strength and hardness decrease while elongation and surface tack increase. In coextruded multilayer structures, a high-VA EVA layer can function as a low-temperature sealant or as a compatibility bridge between nonpolar polyethylene and polar layers, but lower modulus and higher tack require adjustments to winding, slitting, and corona treatment. For outdoor applications, UV stabilisation is required because neat high-VA EVA copolymers possess limited inherent UV resistance; addition of hindered amine light stabilisers and UV absorbers is normally performed with a masterbatch carrier that is chemically compatible with the VA ester group.
Compared with ethylene-methyl acrylate and ethylene-ethyl acrylate copolymers, EVA 60039.EH2 typically offers a different balance of polarity, moisture barrier, and acid resistance. EMA copolymers may provide better thermal stability and less odour at high processing temperatures, while EVA with 39 wt% VA can offer higher polar adhesive functionality at lower cost but with a lower continuous-use temperature and greater sensitivity to hydrolysis under hot, moist conditions. Published head-to-head data for the EH2 suffix are limited; selection should be confirmed by laminate adhesion tests under the intended sterilisation or retort conditions.
Wire and cable compounds based on high-VA EVA are used in low-voltage insulation and semi-conductive screens when flexibility and low-temperature impact resistance are required. The polymer’s high filler acceptance permits the addition of flame-retardant fillers such as aluminium trihydrate and magnesium hydroxide, but the compounding step must control melt temperature below 180 °C to minimise deacetylation. Crosslinking with organic peroxides uses dicumyl peroxide or equivalent initiators; the vinyl acetate comonomer modifies crosslink density and decreases crystallinity, but moisture and acidic residues must be kept low to avoid premature scorch. The EH2 grade-specific additive package and its interaction with peroxide systems should be confirmed by oscillating disc rheometry according to ASTM D2084-19a or moving die rheometer methods under ISO 6502-3:2018.
Quality-control laboratories monitor lot-to-lot variation in high-VA EVA by testing melt mass-flow rate, vinyl acetate content, density, and thermal properties. A change in melt index outside the supplier-specific tolerance can alter extrusion coating neck-in, adhesive open time, and film seal response; therefore, a new lot should be qualified on production equipment at representative throughput before release to packaging or assembly operations.
