LyondellBasell Icorene 3545 WHI 1001 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3545 WHI 1001 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 WHI 1001 Polyethylene, Linear Low Density is typically used in formulations when melt flow index and density and processing temperature and melt pressure must be controlled within specific ranges.
| HS Code | 838381 |
| Polymer Type | Linear Low Density Polyethylene (LLDPE) |
| Color | White |
| Density | 0.935 g/cm3 |
| Melt Index | 1.0 g/10 min (190°C/2.16 kg) |
| Melting Point | 124 °C |
| Vicat Softening Point | 100 °C |
| Tensile Strength At Yield | 10.3 MPa |
| Tensile Strength At Break | 20.7 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 0.172 GPa |
| Tensile Modulus | 0.172 GPa |
| Dart Impact | 150 g |
| Elmendorf Tear Strength | 250 g |
| Haze | 10% |
| Gloss | 80% |
As an accredited LyondellBasell Icorene 3545 WHI 1001 Polyethylene, Linear Low Density factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Icorene 3545 WHI 1001 pellets are supplied in 25 kg polyethylene-lined bags, 40 bags per pallet (1,000 kg), stretch-wrapped for transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of LyondellBasell Icorene 3545 WHI 1001 Linear Low Density Polyethylene, palletized and secured for safe export. |
| Shipping | Shipped as non-hazardous, solid polyethylene resin pellets, typically in moisture-resistant 25 kg bags stacked on pallets, stretch-wrapped and secured. Transport in clean, dry trucks or containers; avoid heat, direct sunlight, moisture, and contamination. Store in a dry, ventilated area with normal industrial handling. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and flames. Keep original bags or containers tightly closed, off the floor on pallets, and protect from moisture and contamination. Separate from strong oxidizers. Avoid dust accumulation. Use good housekeeping and first-in, first-out rotation. Use appropriate PPE when handling. |
| Shelf Life | Typical shelf life is 24 months when stored unopened in cool, dry conditions, away from direct sunlight and heat. |
For hollow, double-walled and foam-filled parts in which low-temperature impact strength and environmental stress-crack resistance are required at wall thicknesses above 3 mm, Icorene 3545 WHI 1001 is charged directly into a clamshell, shuttle or carousel rotational molding machine as a pulverized powder without prior densification. The downstream production process begins with dry powder charging into a preheated cast aluminium or fabricated steel mould; biaxial rotation at a minor-to-major axis speed ratio selected between 4:1 and 8:1 distributes the melt across the mould surface while the mould rotates inside a forced-air oven. Oven set points are commonly 260–340 °C, and the peak internal air temperature for linear low density polyethylene is held within 200–220 °C to complete particle coalescence without oxidative embrittlement at the inner skin. Cooling is staged through forced air, water mist and final air cooling to limit warpage and shrink-induced parting-line stress. The formulation addition ratio is 100 % virgin powder or a blend containing 5–20 wt% clean, internally generated regrind, provided that regrind particle size distribution is verified by dry sieve analysis according to ASTM D1921 and the blend melt flow rate is checked by ISO 1133-1:2022 at 190 °C under 2.16 kg. Industry compliance standards for water-contact tanks include ASTM D1998-21 for polyethylene upright storage tanks, NSF/ANSI 61 for potable water system components, FDA 21 CFR 177.1520(c) for olefin polymers used in food contact articles under applicable conditions of use, EU Regulation (EU) No 10/2011 for plastics intended to contact food, and REACH Regulation (EC) No 1907/2006 for substance registration and restriction compliance. Terminal finished product types include vertical water tanks, secondary containment pallets, agricultural chemical tanks, insulated cooler boxes, marine buoys, kayaks, sanitary cubicles and playground panels. Process failure modes observed on production-scale machines are incomplete sintering at the mould parting line, pinhole formation from moisture released by unvented mould threads, and orange-peel inner surfaces when the peak internal air temperature remains below the fusion threshold for the selected particle size distribution.
Masterbatch Carrier Loading and Dispersion Stability in PE-Based Concentrates
In pigment and additive concentrate production for polyethylene film, blow molding and injection molding, Icorene 3545 WHI 1001 can function as a compatible LLDPE carrier when the target base resin is LLDPE-rich and the let-down ratio is maintained below 4 % in the final article. The formulation addition ratio for a titanium dioxide white masterbatch is typically 55–75 wt% carrier powder, 20–40 wt% pigment and 1–5 wt% processing aids; for carbon black concentrates the carrier fraction is commonly 60–70 wt%, with carbon black at 30–40 wt% and a small wax or metal soap dispersant fraction. Downstream production uses a co-rotating twin-screw extruder with L/D between 36:1 and 48:1, atmospheric and vacuum venting, side-feeding of low-bulk-density pigments, and melt filtration through 100–250 μm screen packs to remove agglomerates before strand pelletizing. Specific energy input is normally maintained between 0.15 kWh/kg and 0.25 kWh/kg, and melt temperature at the die plate is controlled below 220 °C to prevent yellowing of titanium dioxide-free white formulations and thermal degradation of slip or antiblock additives. Dispersion quality is assessed by film gel count according to ISO 18553, by optical microscopy at 100× magnification, or by pressure-rise data across the screen changer; a pressure increase greater than 20 % within a production shift indicates unacceptable agglomeration or screen blinding. Industry compliance standards for masterbatch destined to food contact packaging include FDA 21 CFR 177.1520(c), EU Regulation (EU) No 10/2011 with overall migration limit 10 mg/dm², REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU for electrical and electronic sector concentrates, and EN 71-3 for migration of certain elements when the finished plastic is used in toy applications. Terminal finished product types are white and colored masterbatches for LLDPE blown film, drip irrigation pipe, caps and closures, food packaging bags, nonwoven lamination and monofilament rope. A processing distinction must be maintained: LLDPE carrier increases shear heating and die pressure relative to a high-melt-index LDPE carrier, so twin-screw torque limits and adaptor pressure ratings must be verified before switching a line from LDPE-based to LLDPE-based carrier powder.
What Causes Void Formation in Powder Scatter-Coated Carpet Backings?
Powder scatter coating of tufted carpet tile and entrance mat secondary backings uses finely ground LLDPE powder as the thermoplastic binder layer when the production line requires rapid fusion, low smoke evolution and compatibility with calcium carbonate fillers. The formulation addition ratio in the scatter compound is typically 20–35 wt% polymer powder, 50–70 wt% calcium carbonate, 5–15 wt% tackifying resin or EVA, and 0.5–1.5 wt% heat stabilizer; the exact polymer content is adjusted according to filler particle size distribution and the required tuft bind strength. Downstream production begins with a precision scatter hopper dispersing the powder compound onto the moving tufted primary backing, followed by an infrared or forced-convection fusion oven operating at 160–210 °C. The molten layer then passes through calender rolls for densification and embossing, and through a cooling drum before edge trimming. Void formation is observed when the oven temperature is too low for the powder particle size distribution, when residual moisture in the mineral filler vaporizes and becomes trapped, or when line speed is increased beyond the residence time required for complete particle coalescence; additional void sources include irregular scatter density at the carpet edge and the release of volatile processing aids during fusion. Industry compliance standards for finished carpet tiles include EN 1307:2014 for carpet tile classification, ASTM D1335-17 for tuft bind, ASTM D5034-09 for breaking strength and elongation of textile fabrics, REACH Regulation (EC) No 1907/2006, and EU Construction Products Regulation (EU) No 305/2011 when the flooring product is placed on the European market. Terminal finished product types are carpet tiles for commercial offices, entrance mat systems, automotive floor mats, anti-fatigue mats and upholstery backing layers. Published data for this specific LLDPE grade in scatter-coated backings is limited relative to EVA and bitumen-based systems, so pilot-scale trials are required to establish the minimum fusion temperature for the supplied powder particle size distribution and filler moisture load.
Where a breathable, low-pressure-drop porous structure is required for filtration, silencing or wicking, dry-blended LLDPE powder is sintered in closed moulds rather than melt-extruded, because the powder bed must retain particle boundaries to form interconnected pores. The formulation addition ratio is 70–90 wt% Icorene 3545 WHI 1001 with 10–30 wt% compatible polyolefin or inorganic filler to shift mean pore diameter and increase stiffness; for low-density wicking and venting applications a 100 % powder bed may be used without filler. The downstream production process consists of mould filling, vibration densification, and convective oven sintering at 170–210 °C for 20–60 min under atmospheric pressure, followed by slow cooling to prevent shrink-induced cracking at the mould wall. Pore size is verified by capillary flow porometry according to ASTM F316-03, and air permeability is measured according to ISO 4022. Industry compliance standards for porous components in food and water contact include FDA 21 CFR 177.1520(c), NSF/ANSI 61 for drinking water system components, EU Regulation (EU) No 10/2011, and REACH Regulation (EC) No 1907/2006; filter performance for hydraulic and lubricating oil elements is validated under ISO 16889:2022. Terminal finished product types include pneumatic silencer discs, battery vent plugs, vacuum filter plates, oil wicks, air diffusers for water treatment, and porous mandrels for low-pressure gas distribution. Published data for this specific grade in sintered porous configurations is limited, so pore-size reproducibility must be confirmed against the supplier particle size distribution and mould fill density.
When LLDPE Powder Competes with SBS in Bituminous Waterproofing Compounds
In polymer-modified bitumen membranes and sealants, linear low density polyethylene powder can be evaluated as a partial replacement for styrene-butadiene-styrene block copolymer when high-temperature rutting resistance and softening point elevation are required, but storage stability and low-temperature flexibility must be confirmed because polyolefin compatibility with bitumen is limited. The formulation addition ratio is typically 3–6 wt% LLDPE powder added to paving-grade bitumen at 170–190 °C; some formulas blend 2–4 wt% LLDPE with 2–4 wt% SBS to reduce compound cost while retaining elastomeric recovery. Downstream production uses a rotor-stator high-shear mill operating at 3,000–5,000 rpm or a recirculating high-speed disperser; mixing continues for 2–4 h under a nitrogen blanket to reduce oxidative ageing, after which the modified bitumen is transferred to a storage tank equipped with slow agitation to delay phase separation. Storage stability is assessed by EN 13399, elastic recovery by ASTM D6084-18, viscosity by ASTM D4402 or EN 13302, and softening point by EN 1427. Industry compliance standards for the final waterproofing product include EN 14023:2010 for polymer-modified bitumen specification, EN 13707 for flexible sheets for waterproofing, REACH Regulation (EC) No 1907/2006, and regional construction product requirements under EU Regulation (EU) No 305/2011. Terminal finished product types are APP/SBS-modified roofing membranes, pavement crack sealants, self-adhesive roofing underlayments and bituminous tanking compounds. Published data for this specific Icorene grade in bituminous systems is limited, and direct substitution from LDPE-based formulations is not recommended without phase-separation testing, because linear low density polyethylene disperses less readily than low-density polyethylene at equivalent mixer shear rates.
Preheating Steel Substrates Above 250 °C Governs PE Coating Adhesion
In electrostatic spray and fluidised-bed dip coating of metal wire goods, LLDPE powder must be applied onto a substrate heated above the polymer melting range so that a pinhole-free fused coating forms during contact. The formulation addition ratio is 98–100 wt% Icorene 3545 WHI 1001 with 0–2 wt% pigment masterbatch and heat stabilizer; UV stabilizer addition is required for exterior applications at 0.5–1.5 wt%. Downstream production begins with degreasing and shot-blasting of the steel part, followed by preheating in a gas-fired or electric convection oven to 250–320 °C. The heated component is dipped into a fluidised powder bed for 2–10 s or sprayed electrostatically, then post-cured at 180–220 °C to complete fusion and flow-out. Coating thickness is controlled between 300 μm and 800 μm depending on dip time, preheat temperature and powder particle size distribution. Adhesion is tested by pull-off according to ISO 4624, and impact resistance is verified by ISO 6272-1; pipeline coatings are qualified under ISO 21809-1:2018 and DIN 30670 where applicable. Industry compliance standards include RoHS Directive 2011/65/EU, REACH Regulation (EC) No 1907/2006, and for dishwasher baskets and food-contact wire goods FDA 21 CFR 177.1520(c) and EU Regulation (EU) No 10/2011. Terminal finished product types are dishwasher baskets, freezer shelves, tool handles, pipe lining for corrosion protection, laboratory clamps, and outdoor wire fencing components. A processing boundary must be observed: substrate temperatures below 250 °C produce incomplete fusion and low peel adhesion, while prolonged exposure above 320 °C can generate oxidative degradation products that reduce coating gloss and impact resistance.
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- LyondellBasell Icorene 3545 WHI 1001 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 3545 WHI 1001 is a linear low-density polyethylene powder grade supplied for biaxial rotational molding. The material designation contains the base grade 3545 and the white colour concentrate code WHI 1001. Public technical data sheets characterize the resin by a density of 0.934 g/cm³ when tested to ISO 1183-1, and a melt mass-flow rate of 4.5 g/10 min at 190 °C under a 2.16 kg load according to ISO 1133-1:2022. The powder is intended for rotational molding machines, where the low shear rate and long heat history place different demands on the polymer than injection molding or film extrusion. The grade is an ethylene-alpha-olefin copolymer; the alpha-olefin content disrupts crystallization enough to lower density and increase impact energy absorption relative to high-density polyethylene, but less than very low density grades used for flexible applications. The white pigmentation provides a stable light colour for water tanks, outdoor enclosures, and visible containment liners, but the pigment also influences heating and cooling behaviour in the mold.
Why Is the Melt Flow Rate Selected at 4.5 g/10 min for Rotational Molding?
In rotational molding, melt flow rate is not a simple injection-control parameter because the material is not forced through a runner system. A melt flow rate of 4.5 g/10 min represents a moderate-viscosity grade that balances densification against sag. On production-scale carousel machines with forced-air gas-fired ovens, oven set-points of 290–330 °C are commonly applied to the mold surface, while the powder bed and molten layer are heated by unsteady convective and conductive transfer. The peak internal air temperature is typically held between 200 °C and 220 °C until all powder has adhered and sintered into a continuous melt film. Terminating the cycle before the internal air reaches the lower threshold can leave pinholes or powdery inner surfaces in thick sections; exceeding the upper limit for more than 30 min can raise the risk of oxidative chain scission and white colour shift. The 4.5 g/10 min flow rate permits adequate wall formation on complex mold inserts at lower peak internal air temperatures than fractional-flow rotomolding grades, while retaining better low-temperature impact than high-flow grades above 7 g/10 min.
Compared with high-density polyethylene rotational molding powders with density values between 0.940 g/cm³ and 0.960 g/cm³, the 0.934 g/cm³ density of the 3545 grade shifts the balance from flexural stiffness toward impact absorption. Instrumented puncture tests conducted under ISO 6603-2 on equivalent wall thickness generally show higher total energy for lower-density LLDPE than for high-density grades, but tensile modulus and load-bearing stiffness are reduced. Against pelletized LLDPE compounds produced on twin-screw extruders for injection molding, the rotomolding powder does not receive the same high shear mixing; therefore its melt homogeneity in the first cycle depends on particle size distribution, mold rotation, and peak internal air temperature rather than screw plasticating. Against other white LLDPE rotomolding grades of similar melt flow, the 3545 WHI 1001 should be compared using actual molded plaques rather than compression-molded specimens alone, because wall thickness, cooling rate, and weld-line formation control final mechanical properties.
Mechanical Response of the 3545 Powder After Biaxial Oven Fusion
Typical values published for the 3545 grade class include tensile stress at yield of 33 MPa when measured according to ISO 527-2, tensile strain at break above 700%, and flexural modulus in the range of 450–650 MPa when tested to ISO 178. Shore D hardness is commonly reported in the range of 55–65 under ISO 868. These values are not guaranteed minima for finished rotomolded parts, because slow cooling in thick tank walls can increase crystallinity and modulus relative to water-quenched thin panels, while fast cooling and internal air temperature gradients can reduce elongation at weld lines. The resin exhibits ductile behaviour at low temperatures typical of LLDPE, but the exact brittle temperature for the white formulation should be confirmed by ASTM D746 on test specimens removed from the relevant wall thickness. Impact resistance is best specified through ISO 6603-2 instrumented puncture at −20 °C and −40 °C, because falling-weight data correlate more closely with rotomolded part failure than notched Izod data.
Chemical storage and containment applications use the grade in single-wall and double-wall tanks, agricultural sprayer tanks, and light secondary containment basins. The non-polar polyolefin backbone provides resistance to aqueous acid and alkaline solutions at ambient temperature, but continuous contact with strong oxidizing acids, halogenated solvents, or hot hydrocarbon streams above 50 °C should be excluded unless chemical compatibility testing is performed. Environmental stress cracking resistance of LLDPE rotomolding grades is routinely measured with ASTM D1693 in 10% Igepal CO-630 solution; typical high-performance LLDPE grades show failure times above 1,000 h, although published data for this exact white formulation is limited and should be confirmed for tanks containing surfactants or bleach. Potable water contact is governed by FDA 21 CFR 177.1520 for olefin polymers, but the coloured formulation and any processing aids must be evaluated for migration limits in the final article.
When the White Formulation Is Exposed to Outdoor Storage and UV Ageing
The WHI 1001 suffix denotes a white-pigmented formulation, and outdoor applications depend on the stabilizer package. Ultraviolet radiation between 290 nm and 400 nm initiates chain scission and surface microcracking in unstabilized polyethylene, producing gloss loss and eventual weeping of tank contents. White pigmentation with titanium dioxide provides screening and good hiding power, but titanium dioxide can also accelerate photocatalytic oxidation at high concentration when exposed to moisture and UV; a hindered amine light stabilizer package is commonly co-formulated to suppress this route. Accelerated weathering under ISO 4892-2 using xenon-arc daylight filters and water spray is recommended for prediction of colour hold and retention of tensile elongation. In hot desert installations, continuous wall surface temperatures above 60 °C shorten oxidative induction time and increase creep under hydrostatic loading, so designers should reduce wall stress or add external shading. Published data for long-term UV resistance of this specific white grade under specific geographic UV doses is limited; validation should be performed on a rotomolded tank of representative wall thickness, not on compression-molded plaques.
Powder Dry Flow, Particle Size Distribution, and Carousel Machine Feeding
On multi-station carousel machines with heating, cooling, and loading/unloading zones indexed at 90° or 120°, powder feeding is a production-scale bottleneck. The powder must discharge from hoppers, through vacuum lines or rotary airlocks, and into a closed mold without creating dust or static. Bridging, rat-holing, and electrostatic adhesion are common failure modes when fines content increases or when ambient relative humidity falls below 30%. Polyethylene powder can be stored at ambient-equilibrium moisture below 0.1% by weight; drying above 60 °C is generally unnecessary and can increase static charging. The white pigment changes the melting surface reflectance, so infrared pyrometers used for automated venting or demolding must have emissivity correction validated for the WHI 1001 colour. Batch-to-batch dry-flow variation may appear as wall-thickness gradients in tall vertical molds. Sieve residues above 500 µm and below 75 µm should be monitored: coarse particles delay densification, while excessive fines create dust deposits and pinholes at tight radii.
Storage in closed bags below 40 °C and protected from ultraviolet light and moisture preserves powder flow and additive performance. The product should not be blended with amine-based antistatic masterbatches or halogenated flame retardants unless the additive combination is first tested for melt stability, because decomposition by-products from long oven cycles can produce surface defects on rotationally molded parts. Under European regulatory obligations, the olefin polymer is subject to REACH registration; end products are generally not classified as hazardous under the CLP Regulation, but plant exhaust from heated polyethylene must be assessed for aldehydes and organic acids generated during over-temperature excursions. Differences between this product and other LLDPE rotomolding powders are best resolved with actual ISO 1183-1 density, ISO 1133-1 melt flow rate, and ISO 6603-2 puncture data measured on molded wall sections of identical thickness, because datasheet values from compression-molded plaques do not fully represent the failure modes of rotationally molded tanks.
