LyondellBasell Icorene 3545 UV+ YEW 2227 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3545 UV+ YEW 2227 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 3545 UV+ YEW 2227 Polyethylene, Linear Low Density is typically used in formulations when melt flow rate and density, and processing temperature and pressure must be controlled within specific ranges.
| HS Code | 211734 |
| Density | 0.935 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 20 g/10 min |
| Tensile Strength At Yield | 16 MPa |
| Tensile Strength At Break | 12 MPa |
| Elongation At Break | 700% |
| Flexural Modulus | 600 MPa |
| Shore D Hardness | 55 |
| Vicat Softening Point | 100 °C |
| Melting Point | 125 °C |
| Mold Shrinkage | 1.5% |
| Uv Stabilization | Yes |
| Color | Yellow |
As an accredited LyondellBasell Icorene 3545 UV+ YEW 2227 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 3545 UV+ YEW 2227 polyethylene is supplied in 25 kg polyethylene bags, typically 40 bags per 1,000 kg pallet. |
| Container Loading (20′ FCL) | Container loading for 20′ FCL: palletized bags of LyondellBasell Icorene 3545 UV+ YEW 2227 Polyethylene, Linear Low Density, secured for shipment. |
| Shipping | LyondellBasell Icorene 3545 UV+ YEW 2227 Polyethylene, Linear Low Density is a non-hazardous resin supplied as pellets in sealed bags or octabins. Ship in dry, covered vehicles away from moisture, contamination, and excessive heat. Not DOT/IMDG/IATA regulated. Follow SDS and local transport rules. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat, flames, and strong oxidizing agents. Keep containers closed to prevent moisture, dust, and contamination. Avoid prolonged high temperatures and outdoor exposure. Use grounding to control static during handling. Inspect containers regularly, ensure proper labeling, and protect from physical damage. Follow local regulations and the manufacturer’s safety data sheet. |
| Shelf Life | Shelf life is 24 months from date of manufacture when stored in original unopened packaging in a cool, dry environment. |
Where does stress-crack resistance intersect with UV exposure in agricultural liquid storage?
In rotomoulded agricultural tanks, the specification for LyondellBasell Icorene 3545 UV+ YEW 2227 Polyethylene, Linear Low Density is built around external weathering and the low-shear crystallinity that drives long-term resistance to dilute fertiliser stress cracking. The base powder is dry-blended at 100 parts with 10–20 parts clean in-house regrind ground to a maximum particle size of 500 µm; the regrind ratio is derived from the requirement that the environmental stress crack resistance of the finished wall does not fall below the value measured on virgin material under ISO 22088-2:2006, Condition B, at 50 °C. Pigment addition is held to 0.5–2.0 parts of PE-based colour masterbatch because higher loadings of inorganic pigments can nucleate linear low density polyethylene and create a surface skin with altered shrinkage behaviour. Compliance is governed by AS/NZS 4766:2019 for polyethylene storage tanks and by the manufacturer’s weathering programme under ISO 4892-2:2013, with accelerated exposure data reviewed at 4,000 h to confirm retention of tensile elongation above the acceptance threshold. The production route is a single-layer rotational moulding cycle on a biaxial carousel or shuttle machine with an oven temperature of 280–300 °C, a peak internal air temperature of 190–200 °C, and a mould surface temperature of 230–250 °C at demoulding. The cooling leg is sequenced as still-air cooling to 110 °C, forced-air cooling to 70 °C, and demoulding only after the outer skin drops below 60 °C to prevent flat-panel warpage. Terminal products include vertical water storage tanks from 500 L to 30,000 L, fertigation nurse tanks, saddle-pod spray tanks, and closed-top chemical mixing tanks for dilute agricultural liquids.
Marine buoyancy shells moulded from Icorene 3545 UV+ YEW 2227 for nearshore mooring, aquaculture cage collars, and floating walkway decks are specified when the part must survive repeated low-temperature impact without losing UV stability. The formula is kept near virgin: 100 parts base powder, 0–10 parts clean regrind limited to internal surfaces, and 2–4 parts PE-based colour masterbatch only when the part must meet a customer hue requirement; no non-PE carrier masterbatch is used because it can localise shrinkage at the foam-fill ports. Powder exposed to ambient relative humidity above 60% is pre-dried at 60 °C for 2 h before charging the mould, since surface moisture creates pinholes in thin-walled float shells. The governing outdoor ageing protocol is ISO 4892-2:2013 xenon-arc weathering, with 2,000 h exposure followed by tensile and puncture impact retention testing per ISO 6603-1:2000. Process conditions are set around a drop-arm or independent-arm biaxial rotomoulder with an oven temperature of 270–290 °C, a peak internal air temperature of 190–198 °C, and a minimum wall thickness of 4 mm at the flotation shell. After cooling through the plateau zone from 120 °C to 80 °C in forced air, closed-cell polyurethane foam is injected through sealed ports to provide partial water-ingress protection. Typical terminal parts are mooring buoys, aquaculture collar floats, pontoon floats, floating walkway shells, and fender sleeves.
Road-workzone shells moulded from a single UV-stabilised LLDPE powder
For road-workzone shells, the production specification must account for the fact that these parts are load-bearing only through ballast, not through the shell itself. The dry blend for traffic delineator bases and non-crash barrier shells is 100 parts Icorene 3545 UV+ YEW 2227 with 0.2–0.5 parts dry yellow pigment or 1–2 parts PE-based masterbatch, plus a maximum of 15 parts clean regrind when the shell is rated for temporary peripheral marking. Structural verification is performed on moulded plaques per ASTM D638-14 Type IV at 23 °C and −20 °C, and weathering retention is verified per ASTM G154-16 Cycle 1 to quantify yellow-index shift below the customer-approved limit. The moulding process uses a single-shot biaxial carousel machine with a 4:1 arm ratio, oven temperature of 285–305 °C, peak internal air temperature of 195–205 °C, and water-mist cooling only after the part surface drops below 90 °C. Because the pigment package in the YEW 2227 designation is thermally sensitive at the upper plateau, cycle time is controlled to avoid internal air exceeding 210 °C. Terminal products include delineator bases, work-zone sign supports, temporary barrier ballast shells, and traffic cone footings.
Chemical dosing tanks and bunded secondary containment parts in water treatment plants are moulded from Icorene 3545 UV+ YEW 2227 only after a chemical compatibility review against the stored oxidiser or coagulant. The formulation is restricted to 100 parts virgin powder when the tank will contain sodium hypochlorite; regrind is capped at 5 parts and must be dry-blended from the same lot to avoid environmental stress crack resistance loss under ISO 22088-2:2006, while external colour masterbatch is held at 1–2 parts. The material’s chemical resistance is validated by immersion testing under ISO 175:2010 for 28 days at the service temperature, and the finished tank is hydrotested to 110% of rated pressure or full-water static head before dispatch. Where European conformity is required, the finished tank is assessed against EN 13575:2012. Published multipoint chemical resistance data for this exact yellow variant under chlorinated acids at 60 °C is limited; immersion testing per ISO 175:2010 before production is mandatory for new service fluids. The rotational moulding route uses a drop-arm machine with a wall thickness of 6–12 mm, an oven temperature of 275–290 °C, and a peak internal air temperature of 195–205 °C. The cooling cycle is the critical control point: cooling faster than 10 °C/min between 120 °C and 85 °C can lock in residual stress that later lowers stress-crack resistance at sharp tank corners. Therefore cooling is staged as still-air to 100 °C, forced-air to 70 °C, and demoulding at 50 °C. Terminal products are sodium hypochlorite dosing tanks, ferric chloride storage tanks, bunded pallets, and day tanks for municipal and industrial water treatment.
When outdoor furniture must retain impact after years of artificial weathering
Because public outdoor furniture survives on impact retention and colour stability, the moulding specification for Icorene 3545 UV+ YEW 2227 is written around low-temperature ductility and controlled yellowing. The dry blend consists of 100 parts base powder, 1–3 parts PE-based colour masterbatch, and 10–20 parts clean regrind for non-structural bases and internal ribs. The finished part is assessed for weatherability under ISO 4892-2:2013 or ASTM G154-16, for tensile retention under ISO 527-2:2012, and for migration of certain elements under EN 71-3:2019 if the article is supplied into public playground programmes. Processing is on a biaxial carousel or shuttle rotomoulder with an oven temperature of 280–300 °C, a peak internal air temperature of 190–195 °C, and release angles of 2–3° to reduce demoulding distortion. Cooling is conducted in still air to 100 °C then forced air to 65 °C before demoulding. Typical terminal products are park bench bodies, litter receptacle shells, playground seat panels, outdoor table tops, and planter bodies.
In high-abuse municipal waste collection, container bodies are moulded from Icorene 3545 UV+ YEW 2227 in thick-walled, high-impact sections where the part must tolerate repeated side impacts from collection machinery and long-term UV exposure. The formulation uses 100 parts base powder with 0–15 parts clean regrind for bin bodies and 1–2 parts PE-based masterbatch for grey or green colours; the bin lid may use a separate HDPE grade if impact requirements differ. The product standard is EN 840-1:2020 for mobile waste and recycling containers up to 400 L capacity, supported by tensile tests per ISO 527-2:2012, puncture impact tests per ISO 6603-1:2000, and weathering per ISO 4892-2:2013. Production is single-shot rotational moulding on a carousel with oven temperature 285–305 °C, peak internal air temperature 190–200 °C, wall thickness 4–8 mm, and forced-air cooling to 70 °C before demoulding. Terminal products include two-wheel 120 L, 240 L, and 360 L waste bins, four-wheel 1,100 L container bodies, and outdoor recycling bins.
Competitive LyondellBasell Icorene 3545 UV+ YEW 2227 Polyethylene, Linear Low Density prices that fit your budget—flexible terms and customized quotes for every order.
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- LyondellBasell Icorene 3545 UV+ YEW 2227 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.
What Conditions Govern Rotational Molding Cycle Development?
Cycle development for this grade follows standard linear low density polyethylene rotational molding practice. The powder must melt and densify against the mold surface without trapping air. In hot-air ovens, oven set temperatures of 260–316 °C are common, but the primary control parameter is the internal air temperature measured inside the mold cavity. The peak internal air temperature must exceed the crystalline melting region long enough to eliminate residual powder and bubbles; for a 0.935 g/cm³ linear low density polyethylene, practical peak internal air temperatures are generally maintained in the 190–205 °C range, with the exact value selected according to wall thickness, mold geometry, and oven load. Rotational molding does not impose high shear; therefore, melt flow rate alone is an incomplete predictor of fusion. Zero-shear viscosity and elongational flow during mold rotation control bubble removal and surface replication. Powder particle size distribution is also critical. A bimodal distribution containing 35-mesh and finer fractions improves powder packing and surface detail, but excessive fines below 75 µm can reduce bulk density and increase venting requirements. The mold rotation ratio is set by part geometry; ratios of 4:1 or 9:1 are common for open shapes, but sharp changes in cross-section may require stepwise rotation adjustments to prevent powder accumulation in low-flow regions. On production-scale multi-arm carousel machines, hopper bridging can occur when the feed hopper cone angle is less than 60° or when outlet diameter is below 150 mm. Powders stored above 50 °C may develop clumps that alter feed consistency and produce surface defects. Vibratory aeration or fluidization pads are used to restore uniform dry flow. After fusion, cooling rate controls crystallinity, shrinkage, and warpage. Forced-air cooling before mold release is used for thin-wall parts; for sections above 6 mm, stepped cooling is preferred to reduce internal void formation and post-mold distortion. Mold surface temperature at release is typically maintained below 70 °C to prevent handling deformation. Powder characterization for incoming material should include dry-flow funnel time, bulk density, and sieve analysis. For this density class, bulk density typically falls between 0.36 and 0.42 g/cm³; a change of 0.02 g/cm³ can alter the required charge weight and part thickness distribution. Particle size distribution is reported on 35-mesh, 60-mesh, 100-mesh, and 200-mesh screens. A narrow distribution with insufficient fines may produce a rough internal surface; an excess of fines below 75 µm can increase dust generation and reduce dry-flow consistency. Dynamic oscillatory rheometry at 190 °C provides additional information; complex viscosity and loss tangent across 0.01–100 rad/s are more predictive of bubble removal and wall coverage than melt flow rate alone. Lower complex viscosity at low frequency assists bubble release but can reduce melt strength in deep-draw molds. Fully fused samples of Icorene 3545 UV+ YEW 2227 exhibit a tensile yield strength near 18 MPa and elongation at break greater than 800 % when tested according to ISO 527-2:2012. Flexural modulus is approximately 550 MPa, which is lower than typical high-density polyethylene rotational molding grades but sufficient for self-supporting tanks and covers. Environmental stress crack resistance measured under ASTM D1693-15 in 100 % Igepal at 50 °C is reported to exceed 1000 h. This ESCR value is a primary differentiator in service environments where parts contact surfactants, detergents, agricultural chemicals, or mild oxidizing agents. Low-temperature impact resistance remains ductile below -20 °C, a property that distinguishes this grade from many HDPE rotomolding materials that exhibit brittle failure at similar temperatures. The Vicat softening point is approximately 118 °C, but continuous service under sustained load should be limited to temperatures below 60–70 °C because creep and stress relaxation can reduce dimensional stability. The material resists dilute acids, alkalis, and polar solvents; aromatic hydrocarbons, chlorinated solvents, and strong oxidizing acids cause softening, swelling, or oxidative attack. Stress crack resistance is reduced by ester-based plasticizers and certain surfactant formulations, and prototypes should be tested in the actual chemical environment.When the UV+ and YEW 2227 Additive Package Is Specified for Outdoor Service
The UV+ package is intended to delay photo-oxidative chain scission, chalking, and loss of tensile properties during outdoor weathering. The YEW 2227 suffix denotes a pre-formulated pigment/additive package that can provide UV screening and color stabilization. Accelerated weathering is commonly screened by xenon-arc exposure under ISO 4892-2 at 0.35 W/m² at 340 nm with a black panel temperature of 63 ± 2 °C and water spray cycles. Suitable endpoint criteria include gloss retention, color change, and retention of tensile elongation. The actual service life is a function of UV irradiance, ambient temperature, moisture, wall thickness, and the specific color package; published data for this exact YEW 2227 formulation across all climates is limited. The weathering package does not prevent surface oxidation indefinitely. In applications where the part is exposed to chlorinated water or concentrated hypochlorite solutions, simultaneous UV and oxidant attack can initiate surface microcracking. For such conditions, supplemental testing is required before specification. The base polyolefin powder is not hygroscopic; pre-drying is not normally required. However, condensation on cold powder surfaces at relative humidity above 60 % may introduce surface defects during molding. If condensation is observed, drying at 70–80 °C for 1–2 h is a common remedial step.Differentiation Against HDPE and Conventional Butene LLDPE Rotomolding Products
Compared with high-density polyethylene rotational molding grades of similar melt flow rate, Icorene 3545 UV+ YEW 2227 has lower flexural modulus and higher environmental stress crack resistance. The density difference of approximately 0.010 to 0.015 g/cm³ reduces part weight for a given wall thickness but also reduces stiffness, creep resistance, and upper service temperature. This shifts the grade toward ductile tanks, containers, outdoor housings, and playground components rather than high-stiffness structural parts. Compared with conventional butene-copolymer LLDPE rotational molding powders, the product’s ESCR and low-temperature toughness can be higher when the polymerization chemistry produces a more homogeneous short-chain branching distribution. The melt flow rate of 4.5 g/10 min is higher than many HDPE rotomolding powders; this supports faster powder melt-out and better reproduction of fine mold texture but reduces melt strength. For thick sections above 12 mm or deep vertical walls, lower oven temperatures and reduced mold rotation speed may be required to prevent pinhole formation. When compared with lower-flow LLDPE grades, the product may not be suitable for very deep draw parts that require high melt strength to avoid thinning under gravity.| Property | Nominal value | Test method |
|---|---|---|
| Density | 0.935 g/cm³ | ISO 1183-1:2019 |
| Melt flow rate | 4.5 g/10 min | ISO 1133-1:2022 |
| Tensile yield strength | 18 MPa | ISO 527-2:2012 |
| Elongation at break | >800 % | ISO 527-2:2012 |
| Flexural modulus | 550 MPa | ISO 178:2019 |
| Environmental stress crack resistance | >1000 h | ASTM D1693-15 |
| Vicat softening point | 118 °C | ISO 306:2022 |
| Attribute | Icorene 3545 UV+ YEW 2227 | HDPE rotomolding range | Butene LLDPE rotomolding range |
|---|---|---|---|
| Density | 0.935 g/cm³ | 0.940–0.946 g/cm³ | 0.924–0.936 g/cm³ |
| Melt flow rate | 4.5 g/10 min | 1.5–6.5 g/10 min | 3.0–5.5 g/10 min |
| Flexural modulus | 550 MPa | 700–1000 MPa | 300–550 MPa |
| Environmental stress crack resistance | >1000 h | 100–500 h | 300–1000 h |
| Low-temperature impact | high | moderate | moderate to high |
