LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density is typically used in formulations when melt flow rate, density, and particle size distribution, and processing temperature, mold temperature, and cooling rate must be controlled within specific ranges.
| HS Code | 947857 |
| Density | 0.935 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 20 g/10 min |
| Tensile Strength At Yield | 10.3 MPa |
| Tensile Strength At Break | 15.2 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 483 MPa |
| Shore D Hardness | 50 |
| Vicat Softening Temperature | 100 °C |
| Melting Point | 125 °C |
| Thermal Conductivity | 0.33 W/m·K |
| Dielectric Constant | 2.3 |
| Water Absorption | <0.01% |
| Ul 94 Flammability Rating | HB |
| Oxygen Index | 17% |
| Volume Resistivity | >1e15 ohm·cm |
As an accredited LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density, is supplied in 25 kg moisture-resistant bags, palletized for industrial storage. |
| Container Loading (20′ FCL) | 20′ FCL loading for LyondellBasell Icorene 3560 G BUE 5748 LLDPE: 25 kg bags, floor-loaded/secured, within container weight limits. |
| Shipping | LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density, ships as a non-hazardous polymer resin, typically in 25 kg PE bags on stretch-wrapped pallets or in bulk trucks/railcars. Store dry, below 50°C, away from ignition/UV. Ensure sealed packaging and follow standard DOT/IMDG/IATA and local regulations; no hazardous transport classification. |
| Storage | Store in a cool, dry, well-ventilated warehouse at ambient temperature. Keep original bags or containers closed, palletized, and off the floor to prevent moisture uptake. Protect from direct sunlight, excessive heat, sparks, flames, and strong oxidizers. Avoid dust generation and static buildup. Use first-in, first-out stock rotation, inspect containers regularly for damage, and follow local regulations. |
| Shelf Life | Shelf life is typically 24 months when stored in original packaging under cool, dry conditions, away from direct sunlight and heat. |
LyondellBasell Icorene 3560 G BUE 5748 is introduced as a dry powder directly into cast-aluminium moulds for single-wall vertical chemical storage tanks on a three-carousel rotational moulding line. The dose path begins with bulk density, typically 0.400–0.480 g/cm³ for rotomoulding LLDPE powders, which controls the apparent bed depth before biaxial rotation. Charge mass for a 1,000 L cylindrical shell with 8 mm nominal wall and 5.9 m² outer surface is calculated from thickness × surface area × density of the fused wall, giving 44–49 kg at 0.930–0.940 g/cm³; the closed tool is then rotated at primary speed 6–8 rpm and secondary speed 1.5–2.0 rpm, with reversal every 6–8 min to eliminate bridging at corner pinch points. The oven zone is set at 265–285 °C. Peak internal air temperature must reach 190–205 °C and remain there for 8–12 min; below 185 °C, insufficient sintering leaves cold-melt voids at weld lines, while above 210 °C, surface oxidation and inner-wall blistering become visible on chemical tanks. Cooling proceeds in stages: forced air for 12–18 min, then water mist at 2–4 K/min wall cooling in the range from 120 °C to 70 °C, because cooling faster than 5 K/min in 8 mm LLDPE shells can increase post-mould shrinkage and flange warpage. The finished tank wall must show no pinholing when tested with 15 kV spark discharge; for agricultural adjuvant storage, the resin is qualified by 30-day immersion in the actual formulated liquid at 40 °C following ASTM D543-21, and the shell is checked for stress cracks after a 0.6 m drop at −20 °C. Continuous exposure above 40 °C with chlorinated hydrocarbons or strong oxidizing agents is not recommended unless full-scale immersion testing confirms acceptable retention of tensile elongation.
How Does the Blue UV-Stabilized Powder Meet Potable Water Contact Requirements?
Pigmentation and light stabilization for BUE 5748 are incorporated in the supplied powder, eliminating the need to dry-blend separate UV masterbatch. The blue colour package must comply with 21 CFR 178.3297 for indirect food-contact colorants; the finished tank is separately assessed under FDA 21 CFR 177.1520 for olefin polymers in contact with food. Potable water tanks are certified to NSF/ANSI/CAN 61 for cold-water extraction. The rotomoulding cycle for water-contact parts is shorter than for chemical tanks: a 300 L closed-head tank with 6 mm wall uses an oven set point of 255–270 °C, and peak internal air temperature is held at 185–195 °C for 6–10 min. Because the grade contains a hindered amine light stabilizer, no post-cure oven treatment is required; mould cleaning with strongly alkaline detergents can strip the outer HALS-rich skin and is avoided. Inner weld lines are a regulatory concern in potable tanks: an under-sintered internal seam can harbour microbiological growth, so the finished tank is filled to 100% capacity and inspected for waterline cracks after 72 h drying. Test protocols include ASTM D1998 for upright polyethylene tanks, ASTM D638-14 for tensile yield and elongation, and ISO 179-1/1eA for Charpy impact at 23 °C. Published data for long-term blue-pigment migration into chloraminated water at 60 °C is limited; potable tanks are therefore specified for cold-water service below 38 °C unless a separate high-temperature liner is installed.
| Application / exposure | Standard or code | Controlled property |
|---|---|---|
| Upright chemical storage tank | ASTM D1998 | Weld-line integrity, drop impact |
| Chemical immersion | ASTM D543-21 | Mass change, tensile elongation retention |
| Potable water contact | NSF/ANSI/CAN 61 | Cold-water extractables |
| Indirect food contact | 21 CFR 178.3297 | Colourant migration limits |
| Olefin polymer food contact | FDA 21 CFR 177.1520 | Extraction controlled by polymer specification |
| Tensile properties | ASTM D638-14 | Yield strength, elongation at break |
| ESCR | ASTM D1693 | Condition B, 10% Igepal, 50 °C |
| UV weathering | ISO 4892-2 | Colour shift ΔE, retained impact |
Within portable sanitation cabinets and waste-holding tanks, the blue colour is not merely cosmetic; the pigment package contributes to UV screening of the underlying LLDPE matrix, but it does not replace the HALS system in the grade. The cabinet outer shell is rotomoulded as a double-wall panel with 4–5 mm skins separated by a 12–18 mm air gap, usually on a shuttle machine using a steel mould. Cycle development for a two-part cabinet shell focuses on the narrow window between complete sintering and gloss loss; the oven set point is 260–280 °C, and the part is demoulded at 55–70 °C to avoid warping of the long vertical wall. Weld-line integrity is tested by dropping the assembled cabinet from 1.2 m onto concrete at −20 °C; the controlling property is the low-temperature Charpy impact measured under ISO 179-1. The holding tank is rotomoulded as an integral or separate 6 mm wall part with internal baffles. Chemical exposure to formaldehyde-based deodorizing fluids requires immersion coupons extracted from the tank wall and tested according to ASTM D543 for change in mass and tensile elongation; excessive swelling or elongation loss disqualifies the batch. Post-mould welding of fill-line and valve bosses is carried out by hot-plate welding at 200–220 °C surface temperature for 20–30 s; overheating above 230 °C degrades the blue pigment layer and reduces impact resistance at the welded boss.
When a Single-Layer LLDPE Hull Is Rotomoulded Into Small Marine Craft
For canoes, kayaks, and small paddlecraft hulls, the part is a single-layer shell of 3.5–5.0 mm nominal thickness, which places the grade in a regime where cooling rate and wall-thickness uniformity govern impact performance. The mould is usually machined cast aluminium with a textured inner surface to disguise weld lines. Oven set point is 250–270 °C; because the wall is thin, peak internal air temperature should not exceed 180–190 °C. Above 195 °C, the thin hull exhibits internal bubble formation along the keel line and loss of dart impact, tested under ASTM D3763 or ISO 6603-2 at 23 °C. The powder is sieved below 500 µm to prevent coarse particles from generating thick localized spots at the bow; the certificate of analysis should report retained fractions on 250 µm and 500 µm sieves. A staged cooling schedule is used: 8 min forced air, 10 min air-water mist, then ambient air to 50 °C; removing the hull too early from the tool causes gunwale toe-in. The blue UV package is evaluated after 2,000 h Xenon arc exposure under ISO 4892-2; a colour shift ΔE greater than 4.0 and retained Charpy impact below 75% of the unexposed value constitute failure for marine exposure. Hull flotation foam blocks are added separately; direct foaming with azodicarbonamide is not recommended without specific validation because exothermic decomposition above 200 °C can exceed the thin-wall processing window.
Underground Irrigation Valve Boxes, Bury Loads and Environmental Stress Crack Resistance
Buried valve boxes and sump basins are rotomoulded with open-top tools and local reinforcing ribs; the primary failure mode is environmental stress cracking at corners under cyclic traffic load and soil pressure, not tensile yield. The resin’s ESCR is therefore more relevant than melt flow; it is measured under ASTM D1693, Condition B, 10% Igepal CO-630, at 50 °C. Injection-moulded lids in the same blue colour are not interchangeable with rotomoulded bases unless the lid compound has been matched for thermal expansion and warpage; the recommended practice is to rotomould both components from the same lot to avoid differential shrinkage of 1.2–2.0% between thin lids and thick bases. In production, the tool rotates at a primary/secondary speed ratio of 4:1; the oven set point is 275–285 °C and peak internal air temperature is 200–210 °C for 10–14 min. The outer wall is designed at 6–9 mm, and the upper rim is locally thickened to 10–12 mm by tool geometry; under sintering, the powder at the rim must be held at 195 °C for at least 6 min to eliminate a cold seam that can crack when the lid is bolted down. Bury-load verification follows the utility operator’s end-product specification; published data for this specific configuration is limited, so a full-size box is buried in compacted sand and loaded with a steel plate to confirm no fracture at 15 kN for a 300 mm × 450 mm footprint.
Critical Wall Thickness Control in Multi-Cavity Access Covers for Food-Processing Floor Drains
Access covers and floor-drain sumps for food-processing rooms use the blue grade because the colour aids visual inspection and the LLDPE base resin is acceptable for dry food-contact surfaces. Each multi-cavity tool produces six to eight covers in a single cycle; the central cavity closest to the arm hub receives less heat than the outer cavity, so wall-thickness variation across the tool can exceed 15% if shot weight per cavity is not individually trimmed. The moulder weighs each cavity charge to ±0.5% of the calculated shot; for a 450 mm × 450 mm cover with 6 mm nominal wall, the charge is 0.9–1.1 kg depending on cavity temperature history. Oven set point is 270–285 °C; peak internal air temperature is 195–205 °C. The cover is removed from the tool at 65–75 °C and placed on a flat cooling jig to prevent edge curl. Non-slip surface texture is produced by the mould, not by secondary coating; coarse abrasive additives are not permitted because they reduce ESCR at the square drain opening. The finished cover is tested to ASTM D638 for tensile elongation and ASTM D790 for flexural modulus; dimensional stability is checked after 24 h at 60 °C in accordance with the end-user’s plant sanitation protocol.
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- LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales8@ascent-chem.com.
LyondellBasell Icorene 3560 G BUE 5748 Polyethylene, Linear Low Density is a powder-grade linear low-density polyethylene within the Icorene rotational moulding series. The complete product designation separates into three identifying blocks: the base resin grade 3560 G, the BUE 5748 colour and stabilizer suffix, and the polymer family linear low-density polyethylene. Distributor literature for the 3560 G series lists a melt flow rate of 6.0 g/10 min at 190 °C under 2.16 kg load according to ISO 1133-1:2022, and a density of 0.935 g/cm³ according to ISO 1183-1:2019. The BUE 5748 suffix is a proprietary package commonly interpreted as a blue UV-stabilized formulation, but the exact hindered amine light stabilizer loading and pigment concentration are lot-controlled through the supplier certificate of analysis and SDS. The powder is intended for rotational moulding of outdoor storage tanks, agricultural chemical vessels, and industrial covers where a balance of moderate stiffness, ductility, and weathering resistance is required. The product differs from a 0.918 g/cm³ general-purpose LLDPE powder by higher density and modulus and lower low-temperature notched impact; it differs from a 0.945 g/cm³ HDPE powder by lower density and top-load stiffness but generally higher ductility at equivalent wall thickness.
Why does a 0.935 g/cm³ LLDPE powder exhibit a narrower rotational moulding window?
The density of 0.935 g/cm³ places this grade above conventional 0.918–0.925 g/cm³ LLDPE rotomoulding powders and below HDPE. The higher density increases the crystalline fraction and shifts the effective melting peak upward; therefore the peak internal air temperature required for complete particle coalescence is higher than for lower-density powders of similar melt flow rate. The melt flow rate of 6.0 g/10 min per ISO 1133-1:2022 reduces melt viscosity relative to a 3.0 g/10 min medium-flow powder, which assists bubble removal and flow into narrow ribs. On shuttle-type rotational moulding machines with arm lengths of 2.0 m to 3.0 m, oven air temperature is usually set between 260 °C and 300 °C, while the peak internal air temperature should reach 190 °C to 210 °C for this density class. Instrumented mould thermocouples are necessary because temperature differences of 5 °C to 10 °C can arise between thick flanges and thin shell sections. Published data for the exact cycle-time delta for Icorene 3560 G BUE 5748 is limited; process development should therefore record PIAT, oven set point, rotation speed, and cooling rate on the specific machine.
The processing window is also influenced by powder particle size distribution and dry flow. Rotational moulding powders are pulverized to remove pellet skins and increase the surface area available for sintering. Coarse particles above 500 µm can remain unmelted at thin corners, while excessive fines below 75 µm can promote dusting and irregular bulk density. Incoming inspection should measure particle size distribution according to ASTM D1921-21 and dry flow according to ISO 6186:1998. For a 0.935 g/cm³ LLDPE powder, the dry flow and bulk density must remain within the supplier’s approved range to avoid bridge formation in fill ports and wall-thickness variation on multi-cavity moulds.
The higher density of 0.935 g/cm³ also increases mould shrinkage. Linear mould shrinkage measured by ASTM D955-21 is commonly 2.5% to 3.5% for this density class, compared with 2.0% to 3.0% for 0.918 g/cm³ LLDPE. This difference is critical when threaded inserts, metallic brackets, or parting-line dimensions are transferred from an existing tool. Non-uniform wall thickness can magnify shrinkage gradients and create warpage after demoulding, particularly when cooling is not controlled.
Mechanical property expectations for a 0.935 g/cm³ linear low-density polyethylene are bounded by density and comonomer distribution. Tensile yield stress measured per ISO 527-2:2012 at 23 °C generally falls between 15 MPa and 20 MPa for this density class, with unaged elongation at break above 600%. The 1% secant modulus per ISO 527-2:2012 is commonly observed between 400 MPa and 650 MPa. Charpy notched impact strength per ISO 179-1:2010 at 23 °C is typically 6 kJ/m² to 15 kJ/m², with lower values at −20 °C and higher sensitivity to moulded-in stress than lower-density grades. These ranges are generic class values and not lot-specific guarantees; the certificate of analysis for Icorene 3560 G BUE 5748 is the controlling document for compliance.
Thermal and rheological benchmarks from distributor datasheets
The following table combines the grade-specific melt flow rate and density with generic class ranges for a 0.935 g/cm³ LLDPE rotational moulding powder. Class-based ranges must not be used for final design allowables.
| Property | Test method | Value | Status |
|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | 6.0 g/10 min at 190 °C / 2.16 kg | Product-specific |
| Density | ISO 1183-1:2019 | 0.935 g/cm³ | Product-specific |
| Tensile yield stress, 23 °C | ISO 527-2:2012 | 15–20 MPa | Class-based |
| 1% secant modulus | ISO 527-2:2012 | 400–650 MPa | Class-based |
| Charpy notched impact, 23 °C | ISO 179-1:2010 | 6–15 kJ/m² | Class-based |
| Linear mould shrinkage | ASTM D955-21 | 2.5%–3.5% | Class-based |
The melt flow rate and density are the primary specification anchors. The remaining mechanical values shift with comonomer type, thermal history, wall thickness, and moulding conditions; the supplier certificate should be used for acceptance testing.
When BUE 5748 replaces a 0.918 g/cm³ general-purpose powder in outdoor storage tanks
Substituting Icorene 3560 G BUE 5748 into an existing mould designed for a 0.918 g/cm³ general-purpose LLDPE changes wall thickness distribution, top-load capacity, and weathering resistance. The higher density increases the 1% secant modulus, allowing a 15% to 25% higher buckling load in vertical cylindrical tanks when tested according to ASTM D1998-21. However, notched impact strength at sub-zero temperatures is lower, and the minimum service temperature should be confirmed by Charpy tests per ISO 179-1:2010 on specimens cut from the actual moulded article. The BUE 5748 UV package is evaluated by accelerated weathering per ISO 4892-2:2013 with filtered xenon-arc exposure at 0.35 W/m²/nm at 340 nm and black-standard temperature 65 °C. Retention of tensile elongation after 2000 h or 4000 h is a common comparative criterion, but exact retention values for this grade require the supplier weathering certificate. Linear mould shrinkage is commonly 2.5% to 3.5%, compared with 2.0% to 3.0% for 0.918 g/cm³ LLDPE, so threaded inserts, outlet flanges, and parting-line dimensions may require tool modification.
The change in density also affects chemical storage performance. For agricultural chemical tanks, environmental stress crack resistance should be compared using ASTM D1693-21 condition B with 10% Igepal. The 0.935 g/cm³ LLDPE class generally offers moderate to high ESCR in non-ionic surfactant solutions, but aggressive crop-protection formulations, diesel, or hypochlorite solutions require immersion testing per ASTM D543-21 or ISO 175:2010 at the actual concentration and service temperature. The presence of a blue UV-stabilizer package does not remove the need for chemical compatibility testing.
Regulatory status for Icorene 3560 G BUE 5748 must be verified against the supplier SDS and certificate of conformity. Olefin polymers in this density class may be formulated to comply with FDA 21 CFR 177.1520 for food-contact use, but a blue-pigmented UV-stabilized grade requires migration testing for the specific additive package under the intended food simulant and use temperature. Under EU Regulation 10/2011, overall migration and specific migration limits for hindered amine light stabilizers and organic pigments must be established by extraction testing. The resin declaration alone does not confer final-article potable-water certification; certification to NSF/ANSI/CAN 61 is equipment-specific and depends on the moulded article, release agents, and post-processing. The pigment system should be checked for compliance with RoHS Directive 2011/65/EU restrictions on lead, cadmium, mercury, and hexavalent chromium, and the stabilizer system should be registered under REACH at the concentration present in the powder.
Because the BUE 5748 grade includes a hindered amine stabilizer package, dry-blending with amine-functional release agents or reactive antifog additives should be avoided unless compatibility is confirmed by accelerated weathering and colour stability trials. Zinc stearate mould release at 0.05 to 0.10 wt% is common in rotomoulding, but higher concentrations can create surface haze, increase demoulding force, and contaminate surfaces intended for food or high-purity chemical contact. Condensation on cold powder should be avoided; if the powder is stored below the dew point or at relative humidity above 60%, conditioning at 20–25 °C for 24 h in closed packaging is practical before charging.
The following comparative table positions the product against adjacent rotational moulding polymer classes. All impact and modulus values are generic class ranges unless a product-specific certificate is cited.
| Parameter | 0.918 g/cm³ LLDPE powder | Icorene 3560 G BUE 5748 | 0.945 g/cm³ HDPE powder |
|---|---|---|---|
| Density | 0.918 g/cm³ | 0.935 g/cm³ | 0.945 g/cm³ |
| Melt flow rate class | 3.0–10 g/10 min | 6.0 g/10 min | 2.0–8.0 g/10 min |
| 1% secant modulus | 250–400 MPa | 400–650 MPa | 700–1200 MPa |
| Charpy notched impact, 23 °C | 15–30 kJ/m² | 6–15 kJ/m² | 4–10 kJ/m² |
| Typical linear mould shrinkage | 2.0%–3.0% | 2.5%–3.5% | 2.0%–4.0% |
The product also differs from pelletized LLDPE extrusion grades of similar density and melt flow rate. Rotational moulding powders are ground to irregular particle shape with higher surface area and lower bulk density than pellets; this morphology is required for particle coalescence on the mould surface. Pelletized extrusion grades cannot be directly processed in rotomoulding because of slow sintering and high residual air entrapment. When comparing Icorene 3560 G BUE 5748 to an injection moulding LLDPE of 6.0 g/10 min, the absence of pellet lubricants and the presence of a UV package can change surface finish and demoulding behaviour; the materials are not interchangeable without revalidation of processing and regulatory status.
Production-scale process control on shuttle machines and carousel machines requires monitoring of powder dry flow, bulk density, and sieve distribution. Lot-to-lot variation outside the supplier’s approved range can produce bridge formation in fill ports, uneven wall thickness, and pinholes at sharp radii. Oven air temperature should not exceed 320 °C because oxidative degradation at the inner surface can produce yellowing, surface tack, and reduced elongation at break. If the peak internal air temperature remains below 170 °C, incomplete fusion leaves visible orange peel and reduces tensile properties. Cooling rate is equally critical; forced-air cooling followed by water mist should lower the mould surface temperature to 60–70 °C before demoulding to minimize warpage and post-mould shrinkage. Mould release systems must withstand 300 °C bake cycles and should be reapplied when surface roughness or local sticking begins to affect demoulding.
