| HS Code | 589644 |
| Density | 0.90 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 10 g/10 min |
| Tensile Strength At Yield | 34 MPa |
| Elongation At Yield | 10% |
| Flexural Modulus | 1450 MPa |
| Notched Izod Impact Strength 23 C | 3.0 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 110 °C |
| Heat Deflection Temperature 1 82 Mpa | 65 °C |
| Vicat Softening Point | 150 °C |
| Rockwell Hardness R Scale | 110 |
| Water Absorption 24 Hours | 0.01% |
| Mold Shrinkage | 1.5 - 2.0% |
As an accredited Globalene PP Homopolymer PT100 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Globalene PP Homopolymer PT100 is supplied in 25 kg polyethylene-lined paper bags, ensuring purity, protection, and safe handling during transport. |
| Container Loading (20′ FCL) | 20′ FCL containing Globalene PP Homopolymer PT100, polypropylene resin in 25kg bags, palletized and secured for safe transport. |
| Shipping | Globalene PP Homopolymer PT100 ships as non-hazardous pellets in sealed multiwall paper bags or FIBC bulk sacks. Keep dry, avoid direct sunlight and extreme heat. Transport in clean, covered containers. Store away from ignition sources and incompatible oxidizers. Handle with standard PPE to minimize dust exposure. |
| Storage | Store Globalene PP Homopolymer PT100 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture pickup and contamination. Avoid contact with strong oxidizers. Maintain moderate temperatures to preserve material properties; no special storage hazard under normal conditions. |
| Shelf Life | Shelf life is typically 12 months if stored properly in sealed, dry, cool conditions away from sunlight. |
| Standard / directive | Scope | Test requirement | PT100 status |
|---|---|---|---|
| FDA 21 CFR 177.1520(c) | PP homopolymer in food-contact articles | Olefin polymer extractives; end-test as finished article | Verify supplier certificate for PT100 and additive package |
| Regulation (EU) No 10/2011 | Plastics intended for food contact | Overall migration 10 mg/dm² under Annex V; specific migration for additives | Verify on finished part |
| ISO 10993-5 | In vitro cytotoxicity for medical devices | MEM elution test on sterilised article | Confirm after validation of sterilisation cycle |
| Directive 2011/65/EU | RoHS restricted substances | Lead, mercury, cadmium, chromium VI, PBB, PBDE | Confirm supplier restricted substance declaration |
| REACH Regulation (EC) No 1907/2006 | Registration and SVHC confirmation | Article 33 SVHC communication obligation | Confirm from supplier safety data sheet |
When large-area housewares such as storage totes and compartment boxes are moulded from PT100, the dominant processing defect is not short shot but post-ejection warpage caused by excessive post-mould crystallisation. A two-plate mould with a hot runner and four to eight drops is used, with cavity surface temperature set at 20 °C to 35 °C. The clamp force for a 300 mm × 200 mm storage container with 1.2 mm wall is typically above 3,500 kN to prevent flash during filling, and packing pressure is set at 60 MPa to 80 MPa for 2 s to 4 s after fill. Injection speed is profiled with a slow initial advance of 20 mm/s to 30 mm/s followed by 80 mm/s to 120 mm/s to maintain a uniform melt flow front. Living hinges on integrally moulded lids are kept at a hinge thickness of 0.25 mm to 0.40 mm; flexural endurance is assessed by repeated opening and closing at 23 °C and -5 °C, with unfilled PT100 homopolymer retaining hinge function for 1,000 to 3,000 cycles depending on hinge geometry, but published data specific to PT100 is limited. Flatness is measured after 24 h at 23 °C using a dial gauge, with reference flexural modulus determined per ISO 178. The compound is dry-blended with 0.5 wt% to 1.5 wt% of a colour masterbatch containing 40 % titanium dioxide in a PP carrier; for high-cavitation tools, an external release agent is avoided because it creates surface defects on textured surfaces. Terminal articles are stacked after cooling; however, elevated warehouse temperatures above 35 °C can cause annealing shrinkage of 0.3 % to 0.6 % and must be considered in lid fit tolerance.
Injection moulding of small appliance housings from PT100 is concentrated on components where chemical resistance and low density outweigh low-temperature impact. Typical parts include vacuum cleaner hose mounts, clothes steamer covers, and washing machine detergent drawer fronts; large unsupported panels with surface area above 400 cm² are often avoided in homopolymer PP because solid-state shrinkage after demoulding leads to edge curl and assembly gap variation. The melt is processed at 220 °C to 240 °C, and the mould surface is set at 25 °C to 45 °C for textured surfaces to avoid visible flow lines. No predrying is required if the resin is stored below 55 % relative humidity and the external packaging is intact; however, condensation on cold granules entering a warm feed throat can generate splay and should be prevented by maintaining hopper temperature at 30 °C to 40 °C. Differential shrinkage is controlled by holding pressure at 50 MPa to 70 MPa for 3 s to 5 s and by placing gates at the thickest section; thin ribs should be no more than 60 % of the adjacent nominal wall to prevent sink marks. Flammability is evaluated according to UL 94 at 1.5 mm; unfilled polypropylene homopolymer normally achieves HB classification, while enhanced V-2 performance requires addition of a halogen-free intumescent package at 5 wt% to 10 wt%, which alters the processing viscosity and can raise injection pressure by 15 % to 25 %. Impact performance is compared at 23 °C and -10 °C using ISO 179-1 Charpy notched specimens; homopolymer PP is not selected for drop parts at sub-zero temperatures. Terminal appliance housings are assembled by snap-fit rather than solvent welding because the semicrystalline surface of PT100 has low polarity and resists bonding without plasma or corona treatment at 30 W/m²/min to 50 W/m²/min.
Medical diagnostic and laboratory articles moulded from PT100 are selected for non-implantable short-term contact, including 30 mL to 120 mL specimen containers, centrifuge tubes, and single-use petri dish bases. The regulatory assessment follows ISO 10993-1 for surface-contact devices with exposure duration limited to 24 h or less, while cytotoxicity is evaluated by ISO 10993-5 MEM elution test. Steam sterilisation at 121 °C for 20 min is commonly applied, but the ability of a homopolymer PP article to maintain dimensional integrity depends on internal stress induced by packing; parts with sharp transitions from the base to the side wall can deform when unsupported. Heat deflection temperature of unfilled PP homopolymer is generally in the range of 90 °C to 105 °C at 0.45 MPa per ASTM D648, so autoclave loads are placed on racks that prevent stacking distortion. Moulding is carried out at melt temperatures of 215 °C to 230 °C in a cleanroom environment, with a mould surface of 10 °C to 20 °C; gas-assisted injection is not used for short-cycle medical cups because core pin displacement can create wall-thickness variation above 0.05 mm. Only a narrow additive package is permitted, typically 0.1 wt% to 0.3 wt% of high-purity antioxidant and 1 wt% to 3 wt% of a colour masterbatch complied to USP Class VI or ISO 10993-5 after sterilisation. Published data for PT100 steam sterilisation is limited; validation must be performed on finished containers. Terminal articles include specimen cups with graduation marks moulded into the cavity and tamper-evident screw caps.
Use of PT100 as a compounding base for talc-filled automotive compounds begins with a co-rotating twin-screw extruder having an L/D ratio of 40:1 and side feeding at barrel 6 of 10. The unfilled PT100 melt is fed in the main hopper at 200 °C to 220 °C barrel temperatures, while talc of a median particle size 1.5 µm to 3.0 µm is introduced downstream to prevent excessive screw wear. Screw speed is set at 400 rpm to 600 rpm, producing a specific mechanical energy input of 0.20 kWh/kg to 0.35 kWh/kg; the melt temperature at the die must not exceed 240 °C to avoid degradation of the PP backbone. A loading of 20 wt% to 30 wt% talc increases flexural modulus from approximately 1,500 MPa for unfilled PP homopolymer to 3,000 MPa to 4,000 MPa when measured per ISO 178, but the melt flow rate drops relative to the base resin and the compound must be re-characterised per ISO 1133-1. Coupling is not necessary for talc in PP, but 0.2 wt% to 0.5 wt% of a hindered phenolic antioxidant and 0.1 wt% to 0.3 wt% of a phosphite secondary antioxidant are added to stabilise thermal history during compounding and downstream injection moulding. The strands are cooled in a water bath at 40 °C to 60 °C and pelletised; moisture content before injection moulding must be below 0.05 % to reduce splay. Terminal articles include automotive HVAC ducts, interior trim carriers, under-seat trays, and battery case covers where low-temperature impact is not the primary specified requirement.
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Globalene PP Homopolymer PT100 is an unfilled polypropylene grade with a nominal melt mass-flow rate of 10 g/10 min (ISO 1133-1:2022, 230 °C/2.16 kg) and a density of 0.905 g/cm³ (ISO 1183-1:2022, method A). The resin is characterized by high isotactic index—typically above 96 % measured by heptane insolubles (ISO 9113)—which translates into a flexural modulus of approximately 1550 MPa (ASTM D790-17, procedure A, 1.3 mm/min) and a tensile stress at yield of 36 MPa (ASTM D638-14, type I specimen, 50 mm/min). Because the homopolymer backbone contains no ethylene comonomer, the crystalline melting peak by differential scanning calorimetry (ISO 11357-3) is tightly centered at 165 °C, while the glass transition lies near 0 °C. These attributes place PT100 at the high-stiffness, low-toughness end of the polypropylene family, setting it apart from random copolymers (lower modulus, improved optical clarity, melt peak 140–148 °C) and impact copolymers (often > 10 kJ/m² notched Charpy at 23 °C vs. 2.5 kJ/m² for the homopolymer, ISO 179-1/1eA). The material is predominantly supplied in pellet form, pre-stabilized with a phenolic/phosphite antioxidant system for processing and end-use thermal stability, and is intended for general-purpose injection molding of rigid articles where dimensional fidelity under elevated temperature and sustained load is the primary performance driver.
Processing on reciprocating-screw injection molding machines with a three-zone screw of L/D ratio 20:1 to 25:1 and a compression ratio of 2.5:1 yields homogeneous melt at barrel temperatures between 220 °C and 250 °C, measured at the nozzle with a needle probe. The melt exhibits pseudoplastic behavior; its apparent viscosity at 230 °C and a shear rate of 1000 s⁻¹ falls near 60 Pa·s (capillary rheometry, ISO 11443). Mold surface temperature should be maintained in the range 30 °C to 50 °C—the lower bound promotes faster solidification and shorter cycle times in thick-walled parts, while the upper bound aids replication of fine surface textures in thin-wall geometries. Cooling time scales with the square of part thickness and is adequately described by Fourier’s law approximations using a thermal diffusivity of 0.096 mm²/s. Pre-drying is unnecessary when the moisture content remains below 0.1 wt%; however, storage outdoors or in unheated warehouses in climates where relative humidity exceeds 60 % can raise pellet moisture to 0.15–0.3 %, at which point surface splay, silver streaking, and loss of tensile elongation at break become measurable. Drying for 3 h at 80 °C in a desiccant-bed dryer with a dew point of −30 °C or lower is recommended in such cases. Clamp force requirements can be calculated from the projected area and a cavity pressure of 30–40 MPa; commercial molds running PT100 routinely achieve hold pressure profiles that suppress sink-mark depth to below 0.01 mm on ribs with a thickness-to-wall ratio of 0.6.
Designers frequently face a trade-off between the high modulus of homopolymers and the ductility of copolymers. The table below collates typical single-point data generated on injection-molded 4.0 mm thick specimens conditioned at 23 ± 2 °C and 50 ± 10 % relative humidity for 48 h.
| Property | Test Method | Globalene PT100 (homopolymer, MFR 10) | Typical random copolymer (MFR 10, ~3.5 wt% C₂) | Typical impact copolymer (MFR 12, ~18 wt% C₂-rubber) |
|---|---|---|---|---|
| Tensile modulus | ISO 527-1/-2, 1 mm/min | 1700 MPa | 1100 MPa | 1300 MPa |
| Notched Charpy impact, 23 °C | ISO 179-1/1eA | 2.5 kJ/m² | 6.0 kJ/m² | 25 kJ/m² |
| Notched Charpy impact, 0 °C | ISO 179-1/1eA | 1.5 kJ/m² | 2.5 kJ/m² | 7.0 kJ/m² |
| Heat deflection temperature, 0.455 MPa | ISO 75-2/B | 105 °C | 85 °C | 92 °C |
| Clarity (haze, 2 mm) | ASTM D1003 | 70 % (opaque) | 15 % | 95 % (opaque) |
The homopolymer’s absence of ethylene-derived sequences raises the crystallinity to approximately 58 % (WAXS integration) and shifts the heat deflection temperature upward by roughly 20 °C relative to the random copolymer. Consequently, PT100 is selected for load-bearing components exposed to intermittent temperature spikes up to 110 °C, such as automotive under-hood brackets and appliance structural housings, whereas impact copolymers are reserved for parts that must survive −20 °C drop tests. Published data for the precise weld-line strength of PT100 in geometrically complex hot-runner molds is limited; however, single-gate cold-runner trials with 30 °C mold temperature demonstrate a weld-line tensile strength retention of 85 % relative to the bulk value.
Long-term thermal stability under a sustained mechanical load is quantified by the UL Relative Thermal Index (RTI) in accordance with UL 746B. Globalene PP Homopolymer PT100, when evaluated at a thickness of 1.5 mm, achieves an RTI mechanical with impact of 115 °C and an RTI electrical of 120 °C. These values are derived from aging protocols where tensile strength and impact resistance are tracked until they fall to 50 % of the original values after 100 000 h of thermal exposure, using Arrhenius extrapolations from three elevated-temperature aging curves. Such ratings are critical for components seeking UL Yellow Card recognition and are often requested by OEMs for continuous-use certifications in appliances covered by IEC 60335-1. In parallel, long-term oxidative stability can be further extended with additional additive packages—primary antioxidants of the hindered phenol type and secondary phosphite synergists are already present in the base formulation at a combined level of approximately 0.15 wt%. Users compounding masterbatch colorants should verify that the carrier resin and pigment vehicles contain no metal-stearate levels exceeding 100 ppm of free zinc or calcium, because these can chelate phenolic antioxidants and erode the OIT (oxidation induction time, ISO 11357-6) by more than 40 % at 200 °C.Environmental stress cracking (ESC) in homopolymer polypropylene proceeds via a physical mechanism—plasticization and craze stabilization at the crack tip—rather than chemical degradation. At ambient temperature, PT100 exhibits no significant ESC when immersed in standard test fluids such as 10 % aqueous sodium hydroxide, 30 % sulfuric acid, or motor oils up to 80 °C. However, exposure to halogenated organic solvents (methylene chloride, tetrachloroethylene) causes rapid swelling and catastrophic brittle failure at external strains as low as 0.3 %. Concentrated nitric acid at ≥ 50 % and temperatures above 40 °C leads to surface oxidation that reduces notched Izod impact strength (ISO 180/A) by more than 60 % within 500 h. When the material is specified for chemical storage or pipe fittings, compatibility testing should follow ISO 22088-3 (bent strip method) or ASTM D1693 on injection-molded specimens conditioned with the target chemical at the upper service temperature. Contact with low-molecular-weight hydrocarbons (e.g., pentane, hexane) at elevated temperatures results in weight gain and modulus depression that is reversible upon desorption, provided the sorption cycle remains below the critical strain for craze initiation.
In food-contact applications, Globalene PT100 may be formulated to comply with FDA 21 CFR § 177.1520 (olefin polymers) for use with all food types up to the temperature limits prescribed by the regulation’s conditions of use A through H. EU compliance under Framework Regulation (EC) No. 1935/2004 and its associated plastics measure, Commission Regulation (EU) No. 10/2011, is achieved when only approved additives and processing aids are used. Migration testing per EN 1186 and specific migration limits for constituents listed in the positive list must be verified on the finished article, as the injection-molding thermal history and part surface-to-volume ratio influence overall migration levels. Manufacturers requesting a Declaration of Compliance should reference these regulatory texts and supply batch-specific analytical data for the grade.
Differentiation within the Globalene PP homopolymer portfolio is largely driven by melt flow rate. While PT100 occupies the medium-flow segment (MFR 10), the lower-flow PT060 (nominal MFR 6 g/10 min) is preferred for extruded profiles and thick sheet where melt strength and sag resistance dominate, and the higher-flow PT180 (MFR 18 g/10 min) suits thin-wall injection molding with flow-path-to-wall-thickness ratios exceeding 200:1. The tensile yield and flexural modulus differences among these grades are below 5 %, but the spiral flow length under identical processing conditions (230 °C, 60 MPa injection pressure) scales with MFR to the 0.3 power—a PT180 component can fill a 1.2 mm thick mold cavity roughly 25 % longer than PT100. Therefore, a switch from PT100 to a higher-MFR grade should be accompanied by a gate-freeze study and pack-pressure optimization to prevent over-packing and anisotropic shrinkage in the flow direction.
Production-scale feedback from 2500 kN and 4000 kN toggle-clamp machines running multi-cavity tools (up to 16 cavities) highlights that the high crystallinity of homopolymer PT100 amplifies volumetric shrinkage to a range of 1.8–2.2 % (ISO 294-4), compared with 1.2–1.6 % for impact copolymers. This drives a greater tendency toward sink marks, internal voids in thick sections, and post-mold warpage when cooling is non-uniform. Practical mitigation involves placing gates in the thickest sections, employing conformal cooling channels to maintain a temperature differential between cavity and core of less than 5 °C, and using holding pressure profiles that transition from packing to cooling in three discrete steps. In installations where tool geometry necessitates a hot-runner system with multiple valve-gate drops, sequential filling sequences are programmed with open delays below 0.3 s between adjacent nozzles to prevent prematurely frozen fronts. Molders occasionally report that the base resin’s narrow processing window—undesirable yellowing initiates above 255 °C melt temperature when residence time exceeds 8 min—requires careful sizing of the injection unit relative to shot weight in order to keep the melt cushion below 15 % of barrel capacity. When these constraints are respected, PT100 delivers cycle-to-cycle weight repeatability within ± 0.05 % on parts up to 800 g.
