| HS Code | 192364 |
| Product | ExxonMobil EVA 45033.EH2 EVA Copolymer Resin |
| Vinyl Acetate Content | 33 wt% |
| Melt Flow Rate 190 C 2 16 Kg | 45 g/10 min |
| Density | 0.960 g/cm³ |
| Melting Point Dsc | 64 °C |
| Crystallization Point Dsc | 44 °C |
| Vicat Softening Temperature | 44 °C |
| Glass Transition Temperature | -32 °C |
| Tensile Strength At Break | 8.6 MPa |
| Elongation At Break | 860 % |
| Flexural Modulus 1 Secant | 24 MPa |
| Shore A Hardness | 82 |
As an accredited ExxonMobil EVA 45033.EH2 EVA Copolymer Resin factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg polyethylene-lined paper bags, sealed, labeled, palletized, and shrink-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of ExxonMobil EVA 45033.EH2 resin: palletized bags, moisture protection, proper ventilation, and secure cargo to prevent damage. |
| Shipping | ExxonMobil EVA 45033.EH2 is supplied as solid pellets in moisture-proof bags or bulk containers. Ship via standard dry container or hopper truck. Keep dry, away from heat, direct sunlight, and ignition sources. No special hazard classification; handle with standard industrial hygiene practices. Avoid dust accumulation and static discharge. |
| Storage | Store ExxonMobil EVA 45033.EH2 resin in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep original containers tightly closed to prevent moisture absorption and contamination. Avoid high humidity and prolonged storage at elevated temperatures. Protect bags from punctures and mechanical damage. Follow manufacturer’s guidelines for shelf life and handling. |
| Shelf Life | Shelf life is two years from manufacture date when stored in original, unopened packaging in a cool, dry area. |
In crosslinked closed-cell foam production, EVA 45033.EH2 is introduced through an internal mixer with a drop temperature controlled between 105 °C and 120 °C. This thermal ceiling prevents premature azodicarbonamide decomposition before the sheet is formed. A footwear midsole formulation combines 100 phr EVA 45033.EH2, 2.5 phr to 4.0 phr azodicarbonamide, 0.6 phr to 0.9 phr dicumyl peroxide, 0.8 phr to 1.2 phr zinc oxide, 0.3 phr to 0.5 phr stearic acid, and 5 phr to 15 phr calcium carbonate. The 33 wt% vinyl acetate content increases filler wetting and lowers compound softening temperature. The melt index of 0.45 g/10 min measured per ASTM D1238 at 190 °C/2.16 kg provides high melt strength during gas expansion. After two-roll mill homogenization and pre-forming, press molding at 160 °C to 175 °C triggers simultaneous peroxide crosslinking and blowing. Foam density falls to 0.15 g/cm³ to 0.20 g/cm³. Hardness measured by ASTM D2240 spans 45 Shore C to 60 Shore C. Compression set after 24 h at 50 °C under ISO 815 remains below 35%. Split tear strength measured by ASTM D3574 exceeds 2.5 kN/m in medium-density formulations. The low melt index restricts throughput on twin-screw foaming lines compared with grades in the 0.8 g/10 min to 2.0 g/10 min range. Moisture absorption above 0.1 wt% before compounding causes surface pinholes in expanded sheet. Pre-drying at 50 °C for 4 h is mandated above 60% relative humidity. Resulting components include die-cut midsoles, insoles, yoga mats, and protective padding. Compliance obligations for footwear exports include REACH Annex XVII restrictions on polycyclic aromatic hydrocarbons and residual blowing-agent decomposition products. Formaldehyde and azo-dye limits apply to final foam laminates under EN 14362-1.
At the cast film die, EVA 45033.EH2 requires melt temperatures between 95 °C and 120 °C. The resin is pre-compounded with 0.7 phr to 1.0 phr tert-butyl peroxy-2-ethylhexyl carbonate, 0.3 phr to 0.5 phr vinyltriethoxysilane, and 0.1 phr to 0.2 phr hindered phenolic antioxidant. The high vinyl acetate fraction raises equilibrium moisture uptake compared with 28 wt% encapsulant grades. Vacuum drying at 50 °C for 6 h is required when ambient humidity exceeds 60%. During lamination, vacuum pressure of −0.08 MPa to −0.10 MPa and platen temperature of 145 °C to 155 °C produce gel content between 75% and 90% after 12 min to 18 min cure. Peel adhesion to glass measured per ASTM D903 exceeds 60 N/cm after damp-heat conditioning. Damp-heat exposure per IEC 61215-1:2021 at 85 °C/85% RH for 1000 h reveals acetic acid evolution as the dominant failure mode. The 33 wt% VA content increases acetic acid potential relative to 28 wt% encapsulant grades. This condition demands higher ultraviolet absorber loading and low-free-acid stabilizers. Yellowing index measured by ASTM E313 remains below 2.0 when stabilizer blends are correctly dosed. The low melt index raises cast film die pressure and may reduce line speed below 15 m/min on single-screw extruders with 30:1 L/D. Published line-speed data for this exact grade in cast film is limited; the above parameters represent typical production reference values for comparable high-VA, low-MI encapsulant resins. End products include single-glass and double-glass photovoltaic module encapsulants. Compliance anchors include IEC 61215-1:2021, IEC 61730-1:2023, and UL 1703.
On co-rotating twin-screw extruders with 40:1 L/D, halogen-free flame-retardant cable insulation based on EVA 45033.EH2 is compounded with aluminum trihydrate or magnesium dihydrate loadings from 150 phr to 180 phr. A typical compound contains 100 phr EVA 45033.EH2, 160 phr aluminum trihydrate, 3 phr zinc borate, 1 phr aminosilane, 1 phr phenolic antioxidant, and 2 phr processing aid. Barrel temperatures are set from 140 °C to 170 °C. Screw torque increases sharply above 160 phr filler loading because the 0.45 g/10 min melt index produces high shear viscosity. Die pressure typically exceeds 80 bar when filler passes 170 phr. The limiting oxygen index measured per ISO 4589-2 reaches 32% to 35% at 160 phr aluminum trihydrate. Tensile strength under IEC 60811-501 remains above 10 MPa. Elongation at break remains above 150%. Heat deformation at 90 °C under IEC 60811-507 remains below 30% when crosslinking with 0.8 phr to 1.2 phr dicumyl peroxide is applied. Halogen acid gas content tested under IEC 60754-1 remains below 0.5%. Smoke density measured by IEC 61034-2 remains within low-smoke construction limits. The polar EVA matrix reduces filler agglomeration compared with LLDPE/EVA blends. Processing limitations include water release from aluminum trihydrate above 200 °C. Barrel zones must remain below 190 °C to avoid filler decomposition and unwanted foaming. Pre-drying of EVA 45033.EH2 at 50 °C for 4 h is required above 60% relative humidity.
| Property | Standard | Required value |
|---|---|---|
| Limiting oxygen index | ISO 4589-2 | 32% to 35% |
| Tensile strength | IEC 60811-501 | >10 MPa |
| Elongation at break | IEC 60811-501 | >150% |
| Halogen acid gas content | IEC 60754-1 | <0.5% |
| Heat deformation at 90 °C | IEC 60811-507 | <30% |
Converted products include sheathing for control cables, building wires, and railway transit cables. Compliance standards include IEC 60332-1-2 for flame spread, EN 50267-2-2 for pH, and EN 50268-2 for smoke density.
For hot melt adhesive compounding, EVA 45033.EH2 is processed in sigma-blade jacketed mixers at 130 °C to 160 °C. A starting formulation places 35 wt% EVA 45033.EH2, 35 wt% rosin ester tackifier, 25 wt% Fischer-Tropsch wax, and 1 wt% hindered phenol antioxidant. The 33 wt% vinyl acetate content improves adhesion to polyvinyl chloride, aluminum, and corona-treated polyester. Viscosity at 180 °C measured by ASTM D3236 ranges from 150,000 mPa·s to 250,000 mPa·s depending on wax level. This high viscosity limits roller application to case sealing and profile wrapping. Spray and slot-die systems require dilution with 5 wt% to 10 wt% additional wax. Open time measured on kraft paper remains above 20 s. Shear adhesion failure temperature under ASTM D4498 exceeds 60 °C for low-density substrates. T-peel adhesion to treated polyethylene exceeds 8 N/25 mm. The low melt index of 0.45 g/10 min requires extended mastication time or pre-melting in a heated drum before edge application. Nitrogen blanketing is used to reduce thermo-oxidative degradation. Operating temperatures above 180 °C accelerate acetic acid release from the VA fraction. This acid release can corrode brass nozzles and aluminum fixtures. End articles include packaging adhesives, textile lamination adhesives, and automotive interior lamination. Compliance requirements include FDA 21 CFR 175.105 for indirect food-contact packaging adhesives and REACH registration for EU exports.
When high-filler masterbatch production requires a carrier with polar wetting capacity, EVA 45033.EH2 is compounded on co-rotating twin-screw extruders with 32:1 L/D. Filler loadings from 50 wt% to 80 wt% are feasible for calcium carbonate, titanium dioxide, antimony trioxide, or phosphorus-based flame retardants. A 70 wt% calcium carbonate masterbatch uses 30 wt% EVA 45033.EH2 and 0.5 wt% zinc stearate. The 33 wt% vinyl acetate content provides polar ester groups that wet calcium carbonate surfaces. This wetting reduces filter pressure buildup compared with nonpolar polyethylene carriers. The low melt index of 0.45 g/10 min increases torque but improves pellet cohesion after strand pelletizing. Melt temperature at the die face is held between 155 °C and 175 °C. Filtration through 100 µm to 150 µm mesh removes oversize agglomerates. Dispersibility in letdown is measured by ISO 18553 for pigment agglomeration. Masterbatch addition rates of 2 wt% to 5 wt% in blown film and injection molding are documented. The carrier resin contributes 0.6 wt% to 1.5 wt% vinyl acetate to the final compound. This VA contribution can shift heat-seal performance in final films. Processors must verify seal initiation temperature by ASTM F88 when masterbatch exceeds 4 wt%. Moisture absorption above 0.08 wt% creates pellets with surface porosity. Drying at 50 °C for 4 h is standard. Published filtration pressure data for this exact grade in high-filler masterbatch is limited; typical pressure values for comparable EVA carriers are applied during line qualification. The resulting components include white masterbatch for polyolefin film, flame-retardant masterbatch for wire and cable, and filler masterbatch for footwear foam compounding. Compliance is anchored to ISO 1133-1:2022 for melt flow verification and ISO 1183-1:2019 for density.
Under calendering roll temperatures of 90 °C to 120 °C, EVA 45033.EH2 is blended with 10 wt% to 20 wt% low-density polyethylene or ethylene-octene elastomer to reduce surface tack. A sheet formulation for automotive footwell pads uses 100 phr EVA 45033.EH2, 30 phr barium sulfate, 10 phr calcium carbonate, and 0.5 phr antioxidant. Barium sulfate increases density to 1.2 g/cm³ to 1.5 g/cm³ for acoustic mass layer performance. Tensile strength measured by ISO 37 remains above 8 MPa. Elongation at break exceeds 300%. Low-temperature flexibility measured by ASTM D1053 reaches −40 °C without cracking. This property supports cold-climate automotive interior components. The 33 wt% VA content reduces crystallinity and improves conformability on uneven carpet substrates. Hot-press lamination to polyurethane foam is performed at 130 °C for 60 s. The low melt index limits calendering speed below 10 m/min when sheet thickness exceeds 2 mm. Surface tack issues require anti-block talc or erucamide at 0.1 wt% to 0.3 wt%. Final article types include automotive interior mass layers, gasketing, and low-temperature sealing profiles. Compliance obligations include ISO 3795 for horizontal burn rate in automotive interiors and REACH restrictions for plasticizers and flame retardants.
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ExxonMobil EVA 45033.EH2 EVA Copolymer Resin is an ethylene-vinyl acetate copolymer supplied as pellets. The nominal vinyl acetate content is 33 wt%, determined by Fourier-transform infrared spectroscopy using ASTM D5594-18. The melt index is 0.45 g/10 min at 190°C and 2.16 kg load, measured in accordance with ASTM D1238-20. Density at 23°C is approximately 0.957 g/cm³, tested per ASTM D1505-18. The grade is positioned in the low-melt-index, high-polarity segment of the EVA copolymer range and is used in hot-melt adhesives, wax modification, mineral-filled compounds, polymer blending, crosslinked foam, and asphalt modification. The low melt index restricts use in thin-wall injection molding and thin-gauge extrusion unless the resin is blended with lower-viscosity polymers or waxes.
The following supplier-published typical values are used for incoming inspection and lot-to-lot comparison. They are not maximum or minimum specifications unless stated in a supply agreement. The values should not be used for specification release without verifying against the current certificate of analysis.
| Property | Typical value | Test method |
|---|---|---|
| Vinyl acetate content | 33 wt% | FTIR, ASTM D5594-18 |
| Melt index | 0.45 g/10 min | ASTM D1238-20, 190°C/2.16 kg |
| Density | 0.957 g/cm³ | ASTM D1505-18 |
Published supplier data for tensile strength, Shore hardness, and flexural modulus of this specific grade configuration are limited. Mechanical properties should be measured on the finished compound under ASTM D638-14 for tensile behavior and ASTM D2240-15 for durometer hardness, because final values depend on filler loading, plasticizer content, and thermal history.
The 33 wt% vinyl acetate content reduces polyethylene crystallinity and shifts the resin toward elastomeric behavior. Compared with an 18 wt% VA ethylene-vinyl acetate copolymer, the 45033.EH2 grade exhibits lower melting point, lower tensile modulus, higher elongation at break, and higher surface polarity. In practice, the higher vinyl acetate concentration improves wetting of polar substrates such as aluminum, polyester film, and glass. In co-rotating twin-screw compounding with 40:1 L/D machines, the 33 wt% VA grade shows higher filler acceptance with calcium carbonate and talc at loadings of 20–50 wt%, but the low melt index requires barrel temperature settings of 140–190°C to prevent pressure spikes at the die. The melt temperature must be confirmed by an immersion probe at the die exit because frictional heating can exceed setpoint by 10–20°C at screw speeds of 300 rpm.
Vinyl acetate content is frequently measured by FTIR to ASTM D5594-18 or by NMR. The 33 wt% value corresponds to approximately 10.5 mol% vinyl acetate. Lower-VA grades have higher crystalline melting temperatures and greater stiffness; a 28 wt% VA grade with a higher melt index disperses more rapidly but may develop less green strength in hot-melt adhesive coatings. Selection of EVA 45033.EH2 is therefore appropriate when final peel strength and low-temperature flexibility are more critical than melt flow.
Hot-melt adhesive production on continuous twin-screw lines uses EVA 45033.EH2 as the polymer backbone. Formulation ranges of 30–40 parts EVA, 35–50 parts tackifying resin, and 10–25 parts paraffin or Fischer-Tropsch wax are typical. Resin, wax, and polymer are fed in the first barrel, but the polymer is often added downstream to avoid overheating in the melt-kneading zone. Screw speed is limited to 250–350 rpm on a 40:1 L/D co-rotating machine to limit torque. Adhesive viscosity is measured at 180°C by ASTM D3236-88 with a Brookfield Thermosel. Peel adhesion to aluminum and low-density polyethylene is evaluated by ASTM D1876-08 using a 180° peel test at 300 mm/min. Ring-and-ball softening point is determined by ASTM E28-18. The high VA content supports compatibility with rosin ester tackifiers; phase separation after 24 h at 120°C is reduced relative to lower-VA grades when formulated with rosin ester and microcrystalline wax.
In wax blending, addition of 5–30 wt% EVA 45033.EH2 to paraffin wax modifies crystallite structure. The blend is prepared in a jacketed vessel at 160–180°C with low-shear agitation. Congealing point is determined by ASTM D938-18, and drop melting point is determined by ASTM D127-19. The copolymer increases viscosity and reduces wax brittleness; adhesion to fiberboard is tested by peel or tensile adhesion after coating. Published data for this exact grade in wax systems is limited, so pilot-scale blending is required to determine wax compatibility limits.
EVA 45033.EH2 is not thermally stable above 220°C. At extended melt residence exceeding 15 min at 230°C, the acetate side groups undergo elimination, releasing acetic acid. The acid can corrode downstream metal surfaces and produce odor and bubble formation in extrudate. For hot-melt and compounding operations, melt temperature should be controlled at 180–200°C. Vented twin-screw extruders should be used with vacuum ports to strip acetic acid and moisture. Pre-drying is recommended at 60°C for 2 h when pellets have been stored at relative humidity above 60% or in cold warehouses; although EVA does not hydrolyze readily, surface condensation causes splay in extrudate. The dryer must be a desiccant type with a dew point below -20°C. Avoid blending with amine-based stabilizers that can accelerate deacetylation; phenolic/phosphite stabilizer packages at 0.1–0.3 wt% addition are preferred.
Single-screw extruders with 24:1 L/D may be used for adhesive coating, but melt temperature should be measured at the adapter. Because the melt index is 0.45 g/10 min, screw back pressure can reach 150–250 bar in a 90 mm extruder at 80 rpm when processing unfilled resin. Screw designs with shallow compression sections and Maddock mixing elements improve melt homogeneity without excessive shear. At shutdown, the machine should be purged with a lower-VA or polyolefin purge compound until the melt temperature falls below 150°C.
For hot-melt adhesives used in packaging, the final formulation is characterized by Brookfield viscosity ASTM D3236-88 at 149°C and 177°C, ring-and-ball softening point ASTM E28-18, and low-temperature flexibility by bending at -20°C. The 33 wt% vinyl acetate content provides adhesion to clay-coated paperboard and corrugated board. Open time and set time depend on wax selection and application temperature. Typical application temperature is 160–180°C using slot-die or roll coaters. Equipment must have temperature controllers with ±2°C accuracy; higher temperatures accelerate deacetylation.
Compounding for halogen-free flame-retardant cable jackets uses 60–65 wt% mineral filler, typically aluminum trihydroxide or magnesium hydroxide, in EVA 45033.EH2. The high vinyl acetate content improves filler wetting, but the low melt index of the resin increases mixing torque. A co-rotating twin-screw extruder with 40:1 L/D and side-fed filler at barrel 6 of 12 is used to avoid feeding limitations in the main hopper. Barrel temperature profile is 120–170°C from feed to die, with screw speed 200–320 rpm. The compound melt temperature at the die is held below 200°C. Tensile properties are measured by ASTM D638-14, elongation at break after thermal aging by ASTM D638-14 and IEC 60811-501, and limiting oxygen index by ASTM D2863-19. The final compound typically contains 1–3 wt% processing aid and 0.5–2 wt% silicone masterbatch to lower extruder torque; without these additives, die pressure variation can exceed 5% on long runs.
Batch-to-batch variation in filler moisture content influences adhesion and surface finish. Magnesium hydroxide releases water above 300°C; predrying at 80°C for 4 h in a dehumidifying hopper is required. The EVA phase provides char formation and low acid gas emission; hydrogen chloride generation is not present because no chlorinated polymers are used in the formulation.
Pellet storage should be in sealed containers at 5–40°C. Cold pellet temperature below 15°C can cause condensation when introduced to warm plant air. If pellets are conveyed by vacuum systems, transport air should be dried to a dew point below -20°C to avoid surface moisture. Static accumulation on pellets can be managed by grounding all conveying lines; the resin has higher surface resistivity than carbon-black-filled conductive compounds. Incoming melt index should be verified by ASTM D1238-20, density by ASTM D1505-18, and vinyl acetate content by FTIR calibrated with known standards. Control limits for lot-to-lot melt index variation are typically ±0.05 g/10 min, but specific supply agreements govern.
Compared with an EVA copolymer of similar vinyl acetate content but melt index of 25 g/10 min, EVA 45033.EH2 develops higher melt strength and higher extruder head pressure at equal throughput. In spiral-flow testing by ASTM D3123-09, the low-melt-index grade fills a shorter flow length at a given injection pressure and melt temperature. It is not suitable for thin-wall injection molding with wall thickness below 1.5 mm unless melt temperature is increased to 210°C and injection speed is raised; even then, shear heating may approach the degradation boundary. The resin is better matched to profile extrusion, calendering, and compression molding where lower flow is acceptable.
Compared with LDPE, EVA 45033.EH2 exhibits lower melting point, lower flexural modulus, and better adhesion to polar substrates. Tensile strength measured by ASTM D638-14 is lower than LDPE; therefore, load-bearing structural applications require blending with high-density polyethylene. Compared with lower-VA EVA grades, the 45033.EH2 shows lower Shore hardness and improved low-temperature impact resistance, but reduced flexural stiffness.
In blown film, EVA 45033.EH2 is usually blended with LDPE or LLDPE at 10–30% to improve impact and clarity. The melt index of 0.45 g/10 min contributes to high back pressure in a 45 mm single-screw extruder; die gaps of 1.5–2.5 mm are typical. The high VA content increases film surface energy, improving printability without corona treatment beyond 38 mN/m. Surface energy measurement is by ASTM D2578-17. Higher VA also reduces film modulus; tensile properties are determined by ASTM D882-18 for films.
For crosslinked foam production, formulation containing 100 phr EVA 45033.EH2, 0.5–1.5 phr dicumyl peroxide, 2–5 phr azodicarbonamide, and 1–3 phr zinc oxide is mixed on a two-roll mill at 100–120°C. The melt index of 0.45 g/10 min provides green strength in sheet form before crosslinking. Cure behavior is measured by moving-die rheometer per ASTM D5289-19; the rheometer curve is used to adjust peroxide level to match press cycle. The 33 wt% vinyl acetate content lowers Shore A hardness of the foam and increases resilience compared with 18 wt% VA EVA foam. Dimensional stability after demolding requires cooling under pressure to below 80°C. Published data for this specific foaming configuration is limited; pilot trials are required to set mixing and cure parameters.
Asphalt modification with EVA 45033.EH2 is carried out in high-shear rotor-stator mixers at 170–190°C for 2–4 h. Addition levels of 3–7 wt% are typical. The EVA phase increases softening point, penetration resistance, and elastic recovery. Softening point is measured by ASTM D36-14, penetration by ASTM D5-20, and elastic recovery by ASTM D6084-18. The 33 wt% vinyl acetate content improves low-temperature cracking resistance relative to lower-VA EVA modifiers, but high-temperature storage stability must be confirmed at 160°C for 48 h because phase separation may occur if the asphalt has high asphaltene content. Published data for this specific configuration is limited; tank blending trials are required to set optimum addition level and shear time.
Regulatory assessments are application-specific. EVA copolymers may be subject to EU 10/2011 when used in food-contact articles, but finished-article migration testing is required. The resin is not a medical-grade product. REACH registration obligations apply to imported monomer and polymer substances; current EU REACH, RoHS 2011/65/EU, and safety data sheet documentation should be consulted before use in regulated end markets. Deacetylation products arising during thermal processing may require local exhaust ventilation. Any food-contact compliance under 21 CFR 177.1350 is conditional on vinyl acetate content, extractives limits, and finished-article conditions of use; it should not be assumed without full compliance testing.
