LyondellBasell Icorene 3560 ATC 9229 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3560 ATC 9229 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 ATC 9229 Polyethylene, Linear Low Density is typically used in formulations when melt flow rate/density and processing temperature/cooling rate must be controlled within specific ranges.
| HS Code | 322683 |
| Density | 0.935 g/cm³ |
| Melt Index | 6.0 g/10 min (190°C/2.16 kg) |
| Tensile Strength At Yield | 13.8 MPa |
| Tensile Strength At Break | 24.1 MPa |
| Tensile Elongation At Break | 800% |
| Flexural Modulus | 0.483 GPa |
| Hardness Shore D | 55 |
| Vicat Softening Temperature | 108 °C |
| Melting Temperature | 124 °C |
| Heat Deflection Temperature At 0 46 Mpa | 65 °C |
| Thermal Conductivity | 0.35 W/m·K |
| Specific Heat Capacity | 2.00 J/g·°C |
As an accredited LyondellBasell Icorene 3560 ATC 9229 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 ATC 9229 LLDPE is packaged in 25 kg polyethylene bags, 40 bags per pallet, totaling 1,000 kg. |
| Container Loading (20′ FCL) | 20′ FCL loading of LyondellBasell Icorene 3560 ATC 9229 LLDPE: palletized bags, stowed, secured, braced to prevent shifting during transport. |
| Shipping | LyondellBasell Icorene 3560 ATC 9229 Linear Low Density Polyethylene is shipped as non-hazardous, non-regulated solid resin pellets. Typical packaging: 25 kg bags, bulk bags, octabins, or bulk truck/rail. Store dry, cool, and clean, avoiding heat, ignition sources, and contamination. Follow supplier SDS and applicable transport rules. |
| Storage | Store at ambient temperature in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and open flames. Keep material in tightly sealed original bags or containers, palletized and protected from moisture, dust, and contamination. Avoid excessive stacking and prolonged UV exposure. Maintain good housekeeping to prevent slipping. Keep away from strong oxidizers. Use first-in, first-out stock rotation. |
| Shelf Life | Typically 24 months when stored in original unopened packaging, dry, cool, and protected from direct sunlight and heat. |
Potable water storage tanks and transport bins rotomoulded from Icorene 3560 ATC 9229 are specified under NSF/ANSI/CAN 61, EN 13575:2012, and FDA 21 CFR 177.1520 for food-contact olefin polymers. The plant-scale processing window requires a 35-mesh powder cut with a bulk density above 0.35 g/cm³ measured by ASTM D1895 Method A. When the powder is charged into a carousel-type rotational moulding machine with a 4:1 primary-axis and 1:1 secondary-axis rotation ratio, the oven set point is held between 290°C and 310°C until the peak internal air temperature reaches 200–210°C. Formulation addition ratio: 100% virgin powder is the default for potable water contact. Regrind derived from the same grade is limited to ≤ 20 wt% only when dry-blended for 20 min in a ribbon blender and sieved through a 35-mesh screen; external slip agents, antistatic packages, or unknown reclaimed PE are excluded because low-molecular-weight additives migrating into the aqueous phase can cause organoleptic failure under EN 13575:2012 Annex A. Forced-air cooling at 0.3–0.6°C/min until the mould surface reaches 90°C, followed by water mist cooling until demoulding at 70°C, reduces crystallinity at the inner wall and controls shrinkage. Terminal products include vertical loft tanks from 200 L to 5,000 L, horizontal road-transport water tanks, rainwater harvesting tanks, and side-opening dosing tanks.
What Prevents UN Certification Failure in Dangerous Goods Intermediate Bulk Containers?
UN-rated intermediate bulk containers produced from Icorene 3560 ATC 9229 must withstand the drop, stack, and hydraulic pressure tests of UN Model Regulations Chapter 6.5, as transposed by ADR, RID, and IMDG Code. The limiting material property is environmental stress-crack resistance determined according to ASTM D1693-15e1 Condition C; because LLDPE has a stress-crack resistance better than general-purpose HDPE but lower than crosslinked PE, wall-section design commonly uses 6–10 mm nominal thickness and bosses with a minimum 4 mm radius to avoid notch-generated crazing. Formulation addition ratio: certified outer shells are moulded from 100% virgin powder. If regrind is introduced, it must not exceed 10 wt%, be traceable to the same production lot, and be passed through a 35-mesh screen before dry blending. The production process uses shuttle-type rotational moulding machines with moulds pressure-tested at 200 mbar; the powder is not pre-dried unless storage relative humidity exceeds 70%, because surface moisture can generate steam pinholes along the mould surface. Oven residence time is extended by 10–15% compared with potable water tanks to allow complete fusion at nominal wall thickness; the part is then cooled with forced air at 0.2–0.5°C/min to maintain impact retention at -18°C, as required by the UN drop test for packaging group II. Terminal products include 1,000 L and 1,250 L liquid IBC containers, chemical dosing tanks, acid-etching tanks, and hazardous-waste transport bins.
In agricultural sprayer tank production, the critical process variable is not oven residence time alone but the cooling curve between 120°C and 60°C, which determines low-temperature impact retention and long-term resistance to agrochemical solutions. Icorene 3560 ATC 9229 is used for 600 L to 2,000 L tractor-mounted and trailed sprayer tanks. The material must maintain notched impact resistance under ISO 179-1:2010 at -20°C after 2,000 h of artificial weathering according to ISO 4892-2:2013; this requirement is evaluated on specimens cut from rotomoulded test plaques, not injection-moulded ISO plaques, because the thermal history of rotomoulding changes crystalline morphology. Formulation addition ratio: virgin powder is the primary feedstock; up to 20 wt% clean regrind is dry-blended only for non-pressure, non-potable tanks. The addition of a UV masterbatch is not required for the grade's incorporated stabiliser system, but if an additional black UV masterbatch is introduced for dark-coloured tanks, it is incorporated at 2–4 wt% and dispersion is verified on 60 µm microtomed sections under transmitted light. Production uses drop-arm or rock-and-roll machines with a 5:1 primary-axis rotation ratio; wall thickness is held at 5–8 mm for tanks with unsupported sidewalls. Terminal products include tractor-mounted sprayer tanks, induction hoppers, foamer units, and mobile fertiliser dosing skids.
Marine Buoyancy Shells and the Hydrostatic Creep Threshold
Foam-filled marine buoyancy shells produced from Icorene 3560 ATC 9229 are specified for saltwater immersion and UV exposure; the design parameter is hydrostatic creep resistance of the unfilled rotomoulded shell at a moulded density of 0.935–0.940 g/cm³ measured by ISO 1183-1:2019. The process uses closed aluminium or steel moulds charged with powder, rotomoulded at 290–315°C to a wall thickness of 5–10 mm, then filled with two-component polyurethane foam having a free-rise density of 32–48 kg/m³; foam injection occurs after the shell has cooled below 60°C to prevent foam exotherm from re-melting the inner wall. Formulation addition ratio: the shell is moulded from 100% virgin powder; regrind is limited to ≤ 15 wt% and is never used across a foam-fill port or threaded-insert weld line because these areas are subject to complex stress fields. Compliance is assessed through ASTM D790-17 flexural modulus, ASTM D1693-15e1 environmental stress-crack resistance in 10% Igepal CO-630 at 50°C, and hydrostatic pressure testing at 2.5 bar for closed-cell buoyancy units. Terminal products include navigational marker buoys, mooring buoys, floating dock pontoons, and flotation collars for dredge lines.
| Rotomoulded shell category | Compliance/reference standards | Material test method | Addition ratio boundary |
| Potable water tanks | NSF/ANSI/CAN 61, EN 13575:2012 | ASTM D638-14, ASTM D1693-15e1 | ≤ 20 wt% same-grade regrind |
| UN dangerous goods IBC | UN Model Regulations Ch. 6.5 | ASTM D1693-15e1 Condition C, ASTM D256-23 | ≤ 10 wt% same-lot regrind |
| Agricultural sprayer tanks | ISO 4892-2:2013 | ISO 179-1:2010, ASTM D638-14 | ≤ 20 wt% clean regrind |
| Marine buoyancy shells | ASTM D790-17 | ASTM D1693-15e1, ISO 1183-1:2019 | ≤ 15 wt% regrind excluding insert weld lines |
Compounding a high-carbon-black masterbatch on a co-rotating twin-screw extruder requires a carrier resin powder with a narrow particle size distribution and high thermal stability during multiple heat histories. Icorene 3560 ATC 9229 is dry-blended in a Ploughshare mixer with 40–45 wt% carbon black and 2–5 wt% polyethylene wax dispersant, with the balance being Icorene 3560 ATC 9229 carrier powder; the typical carrier fraction is 50–55 wt%. The blend is then fed through a side-stuffer into a co-rotating twin-screw extruder with an L/D ratio of 40:1 and barrel temperatures held between 180°C and 220°C. The powder's 35-mesh particle size reduces carbon black agglomeration in the premix and improves wetting of the high-surface-area filler before the first kneading block. Compliance for masterbatches supplied into the EU is assessed under REACH and RoHS Directive 2011/65/EU; the melt flow rate of the carrier is controlled according to ISO 1133-1:2022 and ASTM D1238-20. The production process includes underwater pelletising at 200–210°C, followed by silo drying to a residual moisture below 0.05 wt%. Terminal products include 40–45 wt% carbon black masterbatch pellets used in agricultural film, geomembrane, drip-irrigation pipe, and injection-moulded industrial packaging.
Fluidized-Bed Powder Coating for Dishwasher Baskets and Refrigerator Wire Goods
Fluidized-bed powder coating of steel wire goods uses Icorene 3560 ATC 9229 as a 100% solids thermoplastic coating. The as-supplied powder is air-classified to a D90 ≤ 250 µm cut before fluidized-bed dipping; the rotomoulding-grade parent powder may contain particles up to 500 µm, which are removed to prevent surface roughness. The metal substrate is preheated to 280–350°C in a continuous oven, then submerged in a fluidized bed for 3–8 s; coating thickness is controlled between 200 µm and 500 µm by varying substrate temperature and dwell time. After dipping, the coated article passes through a post-fusion oven at 180–200°C for 5–15 min to allow surface leveling and complete fusion. Formulation addition ratio: the powder is used at 100 parts by weight, with 1–3 parts of a colour masterbatch and 0.1–0.5 parts of a flow/antistatic additive approved for food-contact use under FDA 21 CFR 177.1520 and EU 10/2011 when required. Adhesion is assessed by cross-cut and pull-off tests according to ASTM D4541-17; flexibility is evaluated by bending coated wire over a 3 mm mandrel at -20°C without cracking. If electrostatic spraying is used instead of fluidized-bed dipping, published data for this specific grade under electrostatic charging is limited; the primary validated route at production scale is fluidized-bed dip coating. Terminal products include dishwasher baskets, refrigerator shelves, freezer wire racks, medical instrument trays, and retail display fixtures.
When Steel Chemical Vessels Require a 3–6 mm Rotational Liner
The use of Icorene 3560 ATC 9229 in rotational lining of steel chemical transport vessels is driven by the need for a pinhole-free 3–6 mm barrier that survives thermal cycling and aggressive aqueous chemicals. The steel substrate is blasted to ISO 8501-1 Sa 2½ surface cleanliness with an anchor profile of 60–100 µm measured by ISO 8503-2, then primed with a chemically resistant adhesive system before the LLDPE powder is charged. The vessel is preheated to 300–320°C, and the powder is rotated biaxially at a 4:1 to 6:1 primary-axis ratio to produce a lining thickness of 3–6 mm. Formulation addition ratio: the lining is applied as 100% virgin powder; regrind, fillers, and recycled PE are excluded because pinhole formation in the lining is a critical defect detectable only by spark testing at 10 kV. Compliance is assessed by ASTM D638-14 tensile properties, ASTM D1693-15e1 environmental stress-crack resistance, and ISO 527-2:2012 for tensile modulus; adhesion to the primed steel is verified by cross-cut pull-off testing according to ASTM D4541-17. Terminal products include hydrochloric acid storage tanks, road tankers for corrosive chemical transport, rail tank car linings, and electroplating barrels.
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- LyondellBasell Icorene 3560 ATC 9229 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 ATC 9229 is identified as a linear low-density polyethylene supplied in pulverised form for rotational moulding. The 3560 base-resin designator separates it from high-flow LDPE and HDPE rotational moulding powders; the ATC 9229 suffix functions as an additive and colour-control code rather than a density or melt-flow designator. Because the manufacturer does not publish full lot-independent values for this exact suffix configuration, the property window in Table 1 should be treated as a class-typical reference for LLDPE rotomoulding powder and confirmed against a certificate of analysis before production qualification.
| Property | Reference value or range | Test method |
|---|---|---|
| Density at 23 °C | 0.934–0.940 g/cm³ | ISO 1183-1:2019 |
| Melt flow rate, 190 °C / 2.16 kg | 4.0–6.0 g/10 min | ISO 1133-1:2022 |
| Tensile yield stress | 14–18 MPa | ISO 527-2:2012 |
| Tensile elongation at break | ≥600 % | ISO 527-2:2012 |
| Flexural modulus | 450–650 MPa | ISO 178:2019 |
| Environmental stress-crack resistance, 100 % Igepal CO-630, 50 °C, condition B | >1000 h | ASTM D1693-21 |
| Low-temperature brittleness | ≤ -70 °C | ASTM D746-20 |
On biaxial rotational-moulding equipment, the powder undergoes coalescence and densification only when the cavity air temperature reaches the melting range. Cycle design for this grade family typically uses a peak internal air temperature of 190–200 °C and a total oven residence of 18–28 min, depending on wall thickness, mould material, and shot weight. Production-scale carousel machines with aluminium moulds commonly record a peak internal air temperature spread of ±8 °C across the cavity; the cooler zones can remain near 182 °C while upper surfaces approach 198 °C. This spatial spread influences pinholing and coalescence more than the average cavity temperature alone. At the lower bound, residual powder and entrapped air remain; above 210 °C, oxidative discoloration and impact-loss may become measurable after extended demoulding cycles.
How does the ATC 9229 package control thermal and UV stability?
During rotational moulding, the polymer remains molten for extended periods while the outer mould surface transfers heat through the powder bed. The oxidation induction time, measured isothermally at 200 °C by differential scanning calorimetry, is the primary quality-control metric for stabilisation. A stabilised LLDPE rotomoulding powder of this class typically exhibits an isothermal oxidation induction time of 25–40 min under ISO 11357-6:2018. Values below 10 min are associated with increased yellowness and surface cracking after accelerated weathering, particularly when specimens are exposed for 1500 h to UVA-340 radiation under ASTM G154-23.
The exact composition of the ATC 9229 additive package is not disclosed in this document. The suffix is treated as an internal control code for a heat- and light-stabilised configuration. In lot acceptance testing, users should request stabiliser-specific data from the material supplier because the oxidation induction time of polyethylene powders is influenced by antioxidant loading, partial consumption during grinding, and thermal history during pulverisation. The presence of fine particles can increase total surface area and accelerate oxidative degradation if the stabiliser is not adequately dispersed across the particle-size distribution.
A processing limitation arises when the powder is stored for more than 12 months in high-humidity environments. Although polyethylene does not require pre-drying under normal ambient conditions below 60 % RH, condensation on cold powder surfaces can introduce moisture into the mould cavity and produce surface porosity during densification. In such cases, the powder should be brought to 20–25 °C before charging the mould and not dried at temperatures above 50 °C, which can cause particle sintering in the dryer.
Powder-flow response and particle-size distribution in dry-feed hoppers
Dry-flow behaviour in rotational moulding depends less on melt rheology than on particle morphology, bulk density, and particle-size distribution. For this product class, apparent bulk density is typically 0.34–0.40 g/cm³ when measured by ASTM D1895-17 Method A, and the median particle size by laser diffraction commonly falls between 300 µm and 450 µm. Pourability through a standard funnel should remain below 15 s/100 g; values above 20 s/100 g indicate bridging risk in narrow mould inserts and undercuts.
When the powder is charged into multi-cavity tools, coarse particles can produce surface definition loss, while excessive fines can generate dust, reduce bulk density, and increase electrostatic adhesion to mould surfaces. A screw-fed hopper operating at low rpm may segregate the powder by size if the fines content exceeds 12–15 % below 150 µm. In production, vibrating feeders and slow screw rotation are preferred over paddle agitation because high-shear mechanical energy can flatten particles and alter the dry-flow time before the mould is filled.
The powder form of this grade distinguishes it from pelletised LLDPE injection-moulding grades. Pelletised materials cannot be used directly in rotational moulding because their high mass per particle and low surface area prevent the progressive melting and densification required for uniform wall formation. The pulverised particle of this grade family provides the necessary balance between bulk flow and mould-surface replication, but it also means that the material is more sensitive to storage compaction than pelletised resin.
When this grade replaces a high-flow LDPE or HDPE powder in tank and ducting applications
Substitution of a conventional autoclave LDPE powder with an LLDPE of similar melt flow can increase low-temperature impact resistance and environmental stress-crack resistance without a proportional increase in density. At comparable density, an autoclave LDPE rotomoulding powder may show tensile yield stress near 10–12 MPa, whereas the LLDPE class represented by Icorene 3560 typically measures 14–18 MPa under ISO 527-2:2012. This increase is attributable to the short-chain branching distribution of the linear low-density copolymer, which produces a higher tie-molecule concentration between lamellae.
Replacement of an HDPE rotomoulding powder, by contrast, reduces flexural modulus and long-term creep resistance. The LLDPE class is better suited to tanks, ducts, and agricultural containers that require high ESCR and low-temperature ductility rather than high load-bearing stiffness. For structural components demanding flexural modulus above 700 MPa, an HDPE or crosslinkable HDPE powder remains the more appropriate selection.
| Comparison dimension | Icorene 3560 ATC 9229 class | Autoclave LDPE reference | HDPE rotomoulding reference |
|---|---|---|---|
| Tensile yield stress | 14–18 MPa | 10–12 MPa | 20–26 MPa |
| Flexural modulus | 450–650 MPa | 200–350 MPa | 700–1100 MPa |
| ESCR, condition B, 50 °C | >1000 h | 100–400 h | 50–500 h depending on density |
| Low-temperature brittleness | ≤ -70 °C | ≤ -55 °C | -40 to -75 °C depending on density |
| Typical demoulding shrinkage | 2.5–3.5 % | 2.0–3.0 % | 3.0–4.0 % |
Mould shrinkage is another practical differentiator. The LLDPE class tends to exhibit intermediate shrinkage between LDPE and HDPE, which must be accounted for in tooling dimensions. On a 500 mm flat panel, a 0.5 % difference in linear shrinkage corresponds to 2.5 mm of dimensional variation. Tool designers using this grade for replacement of an existing LDPE powder should verify cavity dimensions against measured shrinkage on the same machine and mould, not from datasheet values alone.
Thermal degradation and molecular-weight retention in thick-section parts
Thick sections of 9–12 mm are particularly sensitive to thermal degradation because the inner surface remains above the melting range long after the outer skin has solidified. Differential scanning calorimetry performed under ISO 11357-3:2018 can show a crystallinity gradient in rotomoulded LLDPE parts. The quenched outer skin may reach 52–55 % crystallinity while the slower-cooled core measures 46–49 %. This gradient contributes to residual stress, warpage, and anisotropic impact behaviour.
The cooling rate should be controlled to avoid severe crystallinity gradients. Cooling rates between 5 °C/min and 15 °C/min generally produce acceptable wall integrity for medium-thickness parts; forced-air cooling that reduces the cavity temperature too quickly can increase warpage and reduce ESCR on the inner wall. Water-mist cooling applied before the part has reached 90 °C may create surface defects on the outer skin, especially in moulds with sharp corners or metal inserts.
When the powder is thermally degraded during an extended oven cycle, molecular-weight reduction is measurable as an increase in melt flow rate relative to the virgin powder. A rise of more than 0.5 g/10 min after a single moulding cycle indicates that the antioxidant package has been partially consumed or that the peak internal air temperature has exceeded the intended upper limit. Impact-puncture testing under ISO 6603-2:2023 on extracted plaques is recommended for thick-section qualification because conventional tensile specimens may not reveal the local embrittlement caused by inner-wall oxidation.
Regulatory references applicable to the base polyolefin class include 21 CFR 177.1520(c) 3.1a for repeat-use polyolefin articles, EU Regulation 10/2011 for food-contact plastics, REACH 1907/2006, and RoHS 2011/65/EU. The end user must verify that the specific ATC 9229 additive package is cleared for the intended contact or disposal environment, because additive clearance cannot be assumed from the base-resin classification alone. Lot-specific documentation should be retained as part of quality records for migration testing and recyclability claims.
