LyondellBasell Icorene 3560 GRN 6151 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3560 GRN 6151 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 GRN 6151 Polyethylene, Linear Low Density is typically used in formulations when melt flow rate, density, and particle size distribution and peak internal air temperature and mold release temperature must be controlled within specific ranges.
| HS Code | 391221 |
| Density | 0.935 g/cm³ |
| Melt Flow Rate | 3.5 g/10 min (190°C/2.16 kg) |
| Tensile Strength At Yield | 17.0 MPa |
| Tensile Strength At Break | 24.0 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 620 MPa |
| Hardness | Shore D 55 |
| Vicat Softening Point | 112°C |
| Melting Point | 124°C |
| Heat Deflection Temperature | 60°C at 0.45 MPa |
| Environmental Stress Crack Resistance | >1000 h |
| Uv Stabilization | Yes |
| Color | Green (GRN 6151) |
| Form | Pellets |
| Processing Method | Rotational Molding |
As an accredited LyondellBasell Icorene 3560 GRN 6151 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 GRN 6151 is supplied as green LLDPE pellets in 25 kg moisture-barrier bags, 40 bags per 1,000 kg pallet. |
| Container Loading (20′ FCL) | 20′ FCL loaded with LyondellBasell Icorene 3560 GRN 6151 Linear Low Density Polyethylene, 25 kg bags, palletized, shrink-wrapped, securely stowed. |
| Shipping | LyondellBasell Icorene 3560 GRN 6151 Linear Low Density Polyethylene is shipped as green resin pellets in 25 kg bags, octabins, or bulk containers. It is non-hazardous and not DOT/IMO regulated. Transport in clean, dry vehicles; protect from moisture, heat, and contamination. Store below 50°C. Standard freight handling applies. |
| Storage | Store LyondellBasell Icorene 3560 GRN 6151 Polyethylene, Linear Low Density in a cool, dry, well-ventilated area. Keep containers sealed and pallets off the floor. Protect from direct sunlight, moisture, heat, sparks, and open flames. Separate from strong oxidizers and contaminants. Follow first-in, first-out inventory. Avoid excessive stacking to prevent deformation. Use appropriate handling equipment and PPE. |
| Shelf Life | Typically reported shelf life: 24 months from date of manufacture when stored in original, unopened packaging under cool, dry conditions. |
Icorene 3560 GRN 6151 is introduced as a pigmented linear low density polyethylene rotational moulding powder. The GRN 6151 suffix denotes the green color package, but the color system is not a substitute for a weather-resistant additive package. The powder is charged directly into the tool; pellet compounding is not required. Dry-flow time through a 15 mm nozzle is controlled to a production window of 20–35 s/100 g according to ISO 6186. Sieve retention on a 500 µm mesh is kept below 1 wt% according to ASTM D1921 to avoid bridging in thin ribs. Moisture content above 0.10 wt% measured by ISO 15512 causes pinholes at the parting line, so the powder is dried at 80 °C for 2 h when the ambient relative humidity exceeds 60%. For chemical dosing tanks, the shot weight for a 1,000 L vertical tank with a surface area of 6.0 m² and a nominal wall thickness of 5.0 mm is calculated as 28.1 kg using a melt density of 0.936 g/cm³ from the lot certificate. Carousel machines are set to a primary-to-secondary axis speed ratio of 4:1, and the peak internal air temperature is held at 210–220 °C. At PIAT below 205 °C, particle boundaries remain visible on the inner surface; above 225 °C, oxidative degradation produces carbonyl species that reduce environmental stress crack resistance. The bottom knuckle radius is maintained at 15 mm minimum to prevent crack propagation. Fittings are installed with polyethylene spiral-wound gaskets and 316 stainless steel backing rings; brass components are excluded because copper ions accelerate thermo-oxidative chain scission in hot-wet service above 60 °C. Hydrostatic testing is conducted at 1.25× design fill for 24 h under EN 13575:2012. The grade should not be specified for continuous aromatic hydrocarbon storage above 40 °C. End products include 500–5,000 L vertical cylindrical tanks, conical-bottom dosing tanks, and day tanks with 50 mm PP ball-valve outlets.
Why Does Fertilizer Tank Service Require a Different Cooling Protocol?
Agricultural liquid fertilizer storage imposes a different failure mode: stress cracking at the base-to-sidewall junction caused by thermal cycling and fluid head pressure. The mould is removed from the oven and placed in forced-air cooling for 12–15 min until the inner surface reaches 80 °C. Demoulding above 100 °C causes a 3–5 mm distortion at the base flange, preventing gasket seating on a 4-inch outlet. A 10,000 L horizontal tank is designed with 6–8 mm sidewall thickness and 8–10 mm thickness at the seam. The rotation ratio is set at 4.5:1 for even powder distribution along the long axis. Liquid NPK formulations containing zinc sulfate require a post-moulding anneal at 70 °C for 2 h to relax frozen-in stress; without this step, ESCR measured by ASTM D1693 Condition C can drop below 200 h in a concentrated fertilizer simulant. The green pigment provides opacity, but weathering must be confirmed by ASTM D2565 or ISO 4892-2 because pigmentation alone does not prevent UV chain scission. Outlet bosses are reinforced with a 25 mm thick consolidation ring, and the thread is machined rather than moulded to avoid weld-line porosity. End products include horizontal saddle tanks, transport pods, and induction hoppers for drip irrigation systems.
Marine buoyancy collars moulded from Icorene 3560 GRN 6151 require a foam-filling sequence that controls exotherm below the heat deflection temperature of the LLDPE wall. A two-component closed-cell polyurethane foam with a free-rise density of 35–45 kg/m³ is poured in two lifts, each no deeper than 200 mm, with a 15-minute interval. The moulded shell is cooled to 25–30 °C before foam introduction because residual heat above 40 °C accelerates the urethane reaction and produces core temperatures above 120 °C. Exotherm above 125 °C softens the inner wall, causing blowout at the vent boss and a 200–400 µm reduction in wall thickness at the top dome. The outer shell is designed with a minimum 6.0 mm thickness and a 20 mm diameter vent hole to relieve carbon dioxide generated during foaming. Rotationally moulded eyes are formed with a solid LLDPE lug at least 30 mm thick, and a 316 stainless steel thimble is inserted post-moulding rather than moulded in because thermal expansion mismatch creates interfacial gaps. Low-temperature impact is assessed by ISO 6603-2 at −20 °C; brittle puncture is the controlling failure mode in wave-loaded service. Salt-water immersion testing per ASTM D543 is recommended for fittings because chlorine-induced oxidation attacks unstabilised surfaces. End products include 150–600 mm diameter cylindrical fenders, marker buoy hulls, and pontoon floats for aquaculture cages.
When the Grade Is Moulded into Insulated Food-Processing Bins
Cold-chain material handling bins use a double-wall construction with a 40–60 mm cavity. The two shells are moulded sequentially, then hot-plate welded at 220–230 °C using a CNC-machined PTFE-coated platen. The inner shell is checked for pinholes by a 15 kV spark test after welding because moisture ingress into the foam cavity creates a freeze-thaw pumping effect that delaminates the shell. Blowing agent selection is restricted to cyclopentane-free systems where food-contact compliance falls under FDA 21 CFR 177.1520 and EU 10/2011. The outer shell is moulded at 4.5–5.0 mm, the inner at 3.0–3.5 mm. Demoulding is performed with an air ejector at 0.4–0.6 MPa to avoid stress whitening at the corner radii. The base is fitted with four 100 mm diameter rotationally moulded feet, and the stack load is verified by a three-high compression test at 45 °C for 24 h. End products include 300–1,200 L insulated bins, fish tubs, and lidded totes for processing plants. Published data for this specific configuration is limited; the fabricator should run ISTA 3E transport testing before shipping refrigerated product.
Outdoor Playground Components and Weatherable Street Furniture
Slides, tunnel sections, and roof domes are rotationally moulded from the green grade where the pigment system is supplemented with a hindered amine light stabilizer package confirmed by the supplier. The powder is processed at a PIAT of 205–215 °C to retain impact strength in thick sections. External edges are designed with a minimum 10 mm radius to prevent stress concentration during post-moulding trimming. Playground panels are checked for entrapment openings using 100 mm and 200 mm probes. The LLDPE shell is self-coloured; no topcoat is applied because solvent-borne paints can introduce ketone attack at the surface. UV weathering is evaluated by ISO 4892-2 cycle 1 for 1,500 h, with a maximum yellowness index change of 5 units. Frozen-package impact at −30 °C is assessed using a 4.5 kg hemispherical striker dropped from 1.5 m. The mould shrink rate is set at 1.6–1.8% on steel tools, and the tool surface is textured to a 30–40 µm Ra roughness to hide minor flow lines. End products include 1.2 m spiral slides, 0.6 m diameter crawl tunnels, and bench seat shells.
Chemical Dosing Pump Housings Are Rotomoulded as Spill-Containment Enclosures
The grade is selected for enclosures around sodium hypochlorite and hydrochloric acid dosing pumps because the LLDPE matrix resists stress cracking in the presence of dilute oxidizers. The enclosure base is rotationally moulded at 4.0–5.0 mm thickness with a flat floor and a 25 mm return lip to contain spills. Access panels are CNC-routed after moulding and fitted with EPDM bulb gaskets compressed to 30–35%. The mounting plate is a 10 mm thick LLDPE sheet hot-gas welded at 300 °C with a round nozzle and a 4 mm HDPE welding rod. The welded joint is pressure-tested to 10 kPa for 15 min. Because the green pigment can shift surface temperature under infrared heating, the oven cycle is trimmed by monitoring PIAT rather than timer alone; a 20 °C drop in ambient shop temperature can increase cycle time by 2–3 min. End products include 600 × 400 × 300 mm wall-mounted cabinets, dosing skid covers, and chlorine tablet feeders. The enclosure is anchored with 316 stainless steel bolts through moulded bosses; thread inserts are not recommended because differential expansion can crack the boss root at 60 °C service.
In brine service, the limiting factor is not mechanical stress but osmotic blistering at the fill line. Cabinets for water softener salt storage are moulded at 3.5–4.0 mm wall thickness with a 25 mm radius around the salt port. The port is fitted with an EPDM gasket compressed to 25–30%. The cavity side of the tool is kept at 18–25 °C before powder charging to prevent static clumping in humid rooms. The moulded component is rinsed with deionized water after demoulding to remove surface chlorides. A 10 kV spark test is used to identify pinholes at the drain boss. Published data for this specific configuration is limited. End products include 200–500 L brine cabinets and salt-loading hoppers.
| Downstream sector | Peak internal air temperature | Wall thickness range | Primary/secondary axis speed ratio | Cooling method | Controlling failure mode |
|---|---|---|---|---|---|
| Chemical dosing tanks | 210–220 °C | 4.5–6.0 mm | 4:1 | Forced air to 100 °C | ESCR at knuckle radii |
| Agricultural fertilizer tanks | 200–215 °C | 6.0–8.0 mm | 4.5:1 | Staged ambient and forced air | Stress cracking at outlet boss |
| Marine buoyancy collars | 205–215 °C | 6.0–10.0 mm | 3.8:1 | Water mist in 10 s pulses | Foam exotherm wall softening |
| Insulated food-processing bins | 200–210 °C | 3.0–5.0 mm | 4:1 | Ambient with air ejector | Pinhole leak path in weld |
| Playground components | 205–215 °C | 4.0–6.0 mm | 4:1 | Forced air with mist | Low-temperature impact |
| Dosing pump housings | 205–215 °C | 4.0–5.0 mm | 3.5:1 | Forced air | Weld delamination at spill tray |
| Sector | Standard or method | Cited clause or condition | Acceptance threshold |
|---|---|---|---|
| Chemical dosing tanks | EN 13575:2012 | Hydrostatic test | No leakage at 1.25× design fill for 24 h |
| Fertilizer tanks | ASTM D1693 | Condition C, 10% Igepal | F50 above 200 h in fertilizer simulant |
| Food-processing bins | FDA 21 CFR §177.1520 | Olefin polymers | Extractables per §177.1520(d) |
| Food-processing bins | EU 10/2011 | Overall migration | <10 mg/dm² |
| Marine buoyancy | ISO 6603-2 | Puncture at −20 °C | No brittle failure |
| Playground components | ISO 4892-2 | Cycle 1, 1,500 h | ΔYI ≤ 5 units |
| Water treatment enclosures | ISO 4433-1 | Immersion in sodium hypochlorite | No cracking after 30 days |
Competitive LyondellBasell Icorene 3560 GRN 6151 Polyethylene, Linear Low Density prices that fit your budget—flexible terms and customized quotes for every order.
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- LyondellBasell Icorene 3560 GRN 6151 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 GRN 6151 is supplied as a linear low-density polyethylene powder intended for biaxial rotational molding. The suffix GRN 6151 identifies a green colorant package dispersed into the base resin. The material is classified under ISO 1043-1 as PE-LLD and is not considered interchangeable with general-purpose HDPE rotational molding powders, injection molding grades, or blown film grades. Published data for the GRN 6151 color-compounded variant is limited; therefore, the following values are drawn from published family-level summaries for Icorene 3560 natural and from representative polyethylene rotational molding datasets unless a specific green-compound value is stated. The material typically exhibits a melt flow rate of 5.0–5.6 g/10 min at 190 °C under 2.16 kg load when tested according to ISO 1133-1 or ASTM D1238, and a density of 0.935–0.938 g/cm³ when tested according to ISO 1183-1 or ASTM D1505. These two measurements place the product in the medium-flow LLDPE rotational molding category: higher melt flow than fractional-melt HDPE rotomolding resins, but lower stiffness than high-density grades at equal wall section.
As a dry powder, the material is handled in volumetric systems, boxes, or flexible intermediate bulk containers. Bulk density for medium-flow LLDPE rotomolding powders commonly falls between 0.32 and 0.45 g/cm³; lot-specific bulk density should be obtained from the certificate of analysis because green pigment concentrates can alter particle morphology and packing. Particle-size distribution is also relevant: powders with excessive fines can create dust and uneven distribution in automated loading equipment, while oversize particles may remain as unmelted inclusions at the mold wall if heating time is too short. Sieve retention values for similar grades are commonly controlled at 500 µm and 250 µm screens, but published acceptance limits for GRN 6151 are supplier-specific.
What Processing Limits Govern the Colored Powder on Biaxial Rotational Molding Lines?
On shuttle and carousel rotational molding machines, the powder is exposed to oven air temperatures between 250 °C and 320 °C while the mold rotates on two axes. The relevant process variable is not the oven set point alone but the peak internal air temperature in the mold cavity. For medium-flow LLDPE rotational molding powders, a PIAT of 190 °C–210 °C is commonly required to sinter the polymer particles and eliminate powder porosity at the inner wall. If PIAT remains below 180 °C, incomplete particle coalescence can produce pinholes and brittle weld lines. If PIAT exceeds 230 °C for extended cycles, thermo-oxidative degradation accelerates; green pigmentation may show early color shift toward a brown or chalky surface if the antioxidant package is consumed. Rotational speed ratio on many production machines is held at 4:1 with minor-axis speed of 6–12 min⁻¹; published data for this specific grade’s optimum rotation ratio is limited.
Cooling rate after the heating stage affects warpage and impact. Forced-air cooling followed by water mist cooling is used to shorten cycle times, but water spray cooling should not begin before the melt has solidified through the wall, otherwise excessive warpage and internal void formation can result. When wall thickness exceeds 6 mm, cycle time should be extended rather than compensated by higher oven temperature; otherwise the outer skin degrades before the core reaches sintering temperature.
No pre-drying is generally required for polyethylene rotational molding powders, but surface moisture from condensation can occur when cold powder is moved into a warm molding bay. At relative humidity above 60 %, pre-conditioning at 20 °C–25 °C until the powder reaches room temperature reduces the risk of steam pinholes. The material should not be blended with polypropylene powder or high-melt-viscosity HDPE powders; immiscible particles can remain as unstinted inclusions along the inner surface and create stress concentrators.
The property profile below summarizes typical reference values for the natural Icorene 3560 base. Green-compounded batches may shift notched impact strength and rheological response; pigment agglomerates can lower Charpy impact by 5 %–15 % relative to natural resin depending on pigment concentration, disperser loading, and particle-size distribution.
| Property | Typical value or range | Standard method |
|---|---|---|
| Melt flow rate, 190 °C / 2.16 kg | 5.0–5.6 g/10 min | ISO 1133-1, ASTM D1238 |
| Density | 0.935–0.938 g/cm³ | ISO 1183-1, ASTM D1505 |
| Tensile yield stress | 17–19 MPa | ISO 527-2 |
| Tensile strain at break | >800 % | ISO 527-2 |
| Flexural modulus | 650–800 MPa | ISO 178 |
| Charpy notched impact, -20 °C | No break / >50 kJ/m² | ISO 179-1/1eA |
| Vicat softening temperature, A50 | 115–122 °C | ISO 306 |
| Brittleness temperature | <-70 °C | ASTM D746 |
| Environmental stress-crack resistance, 100 % Igepal CO-630 | >1000 h | ASTM D1693 |
When Alpha-Olefin Comonomer Competes Against Butene LLDPE and HDPE in Stress-Crack-Prone Tanks
The selection of this LLDPE product over a butene-based rotomolding LLDPE is typically justified by the balance of low-temperature impact and environmental stress-crack resistance at similar melt flow. The alpha-olefin comonomer increases the number of tie molecules between crystalline lamellae; the resulting network resists slow crack growth in the presence of agricultural chemicals, dilute acid, and detergent solutions. In comparison, a butene-based LLDPE with equivalent density may exhibit lower ESCR and lower notched impact at -20 °C. High-density polyethylene rotational molding grades provide higher flexural modulus and heat deflection temperature, but their ESCR values are generally lower and their molded parts are more prone to stress whitening at weld lines. Metallocene LLDPE plastomers provide exceptional low-temperature impact and weld-line toughness, but their lower modulus may be inadequate for large flat tank panels that must support hydrostatic loads.
The following ranges are representative values compiled from published rotational molding polyethylene datasheets and are not batch release specifications for the GRN 6151 variant.
| Polymer family | Melt flow rate, 190 °C / 2.16 kg | Density | Flexural modulus | ESCR, 100 % Igepal | Charpy impact, -20 °C |
|---|---|---|---|---|---|
| Icorene 3560 GRN 6151 medium-flow LLDPE | 5.0–5.6 g/10 min | 0.935–0.938 g/cm³ | 650–800 MPa | >1000 h | No break / >50 kJ/m² |
| Butene-based LLDPE rotational molding | 4.0–7.0 g/10 min | 0.925–0.940 g/cm³ | 400–700 MPa | 500–1000 h | 30–60 kJ/m² |
| HDPE rotational molding | 5.0–7.0 g/10 min | 0.940–0.955 g/cm³ | 900–1400 MPa | 100–500 h | 8–20 kJ/m² |
| Metallocene LLDPE plastomer | 1.0–3.5 g/10 min | 0.900–0.920 g/cm³ | 30–80 MPa | >1000 h | No break / >80 kJ/m² |
The color-compounded GRN 6151 variant should not be assumed to match the natural base grade’s outdoor weathering performance. Green pigments can block part of the visible spectrum but may not provide long-term ultraviolet stabilization. Outdoor service in continuously exposed applications requires an additional hindered amine light stabilizer package or a separate UV-stabilized grade. Published data for GRN 6151 under ASTM G154 or ISO 4892-2 accelerated weathering is limited.
Standards, Compliance Matrix, and Reported Batch-to-Batch Variance
Quality control for rotational molding feedstock is evaluated through sieve analysis, bulk density, dry flow, and colorimetric readings. Melt flow rate and density are monitored per lot; batch-to-batch variation in melt flow rate is often controlled within ±0.3 g/10 min or tighter. Color consistency for green-compounded powders is assessed by spectrophotometric CIE L*a*b* measurements, but published acceptance limits for GRN 6151 are supplier-specific. Moisture content is typically controlled below 0.10 wt% by Karl Fischer or loss-on-drying methods.
Regulatory compliance must be verified for the specific GRN 6151 formulation. Polyethylene homopolymer and copolymer base resins can be evaluated under FDA 21 CFR 177.1520 for food-contact use, but the green colorant package may be subject to separate clearance under 21 CFR 178.3297 or equivalent state regulations. European food-contact applications require compliance with EU Regulation 10/2011 and its amendments, including overall migration and specific migration limits for pigments. Industrial applications are commonly assessed under REACH and RoHS 2011/65/EU as amended by Commission Delegated Directive (EU) 2015/863; the supplier certificate of conformance should state the specific heavy metal, phthalate, and substance-of-very-high-concern status for the color-compounded grade.
Storage conditions require avoidance of temperatures above 40 °C because fine polyethylene powder can agglomerate or develop color drift. The powder should be kept away from direct solar exposure, and opened containers should be resealed to prevent contamination from dust, oil, and incompatible polymer fines. Extended storage beyond the supplier-specified shelf life can deplete the antioxidant package and change yellowness index; lots stored longer than 24 months should be re-evaluated for melt flow rate, density, and oxidation induction time.
Field experience with medium-flow LLDPE rotational molding powders indicates suitability for gravity-fed chemical storage tanks, agricultural hoppers, recreational parts, and enclosures where a pigmented green finish reduces finishing labor. On field-scale shuttle machines, wall-thickness distribution is affected by mold geometry and rotation speed; complex shapes with deep pockets require attention to mold venting because trapped air pressure can create internal voids at the inner surface. Reports from molders using similar green-compounded LLDPE powders indicate that inner-surface porosity can be minimized by maintaining peak internal air temperature above 200 °C and by using a slow initial cooling ramp. Published data for Icorene 3560 GRN 6151 specifically in these applications is limited, and formal design validation should use impact, ESCR, and UV aging data for the exact colored lot.
