INEOS Envirez G8600 Bio-Derived Structural Polyester vs. Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester
INEOS Envirez G8600 Bio-Derived Structural Polyester (INEOS Composites US) and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) achieve a 68% ASTM engineering compatibility score in Isophthalic & DCPD Marine Polyester Resins. Tensile strength delta is -4 MPa (-5.4%) and thermal HDT delta is -6 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: INEOS Envirez G8600 Bio-Derived Structural Polyester (INEOS Composites US) | B: Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | INEOS Composites US • INE-ENV-G8600 | Interplastic Corp • IPC-COR75AQ | Cross-Brand OEM Equivalent |
| ASTM D638 Tensile Strength (MPa / PSI) | 70 MPa (10,153 psi) | 74 MPa (10,733 psi) | -4 MPa (-5.4 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 88 °C (190 °F) | 94 °C (201 °F) | -6 °C (Direct Thermal Match) |
| ASTM D790 Flexural Strength (MPa) | 118 MPa | 122 MPa | -4 MPa (-3.3 %) |
| ASTM D2583 Barcol Hardness | 40 | 40 | 0 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 470 cPs | 490 cPs | -20 cPs (-4.1 %) |
| Gel Time @ 25°C (Minutes) | 24 min | 24 min | 0 min |
| ASTM D792 Specific Density (kg/m³) | 1115 kg/m³ | 1115 kg/m³ | 0 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Class 3 Flammable Liquid (UN1866) | Class 3 Flammable Liquid (UN1866) | Identical (UN1866) |
| Unit Price ($/kg USD) & Pack Price | $7.6/kg • $1,710 (225 kg Steel Drum) | $7.4/kg • $1,665 (225 kg Steel Drum) | +0.2 $/kg (+2.7 %) |
| US Stocking Warehouses | Lakeland, FL • Houston, TX • Minneapolis, MN | Lakeland, FL • Houston, TX • Minneapolis, MN | 1–3 Days LTL Dispatch |
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 6 °C (88 °C vs. 94 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: INEOS Envirez G8600 Bio-Derived Structural Polyester vs. Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester
1. Is INEOS Envirez G8600 Bio-Derived Structural Polyester a direct drop-in equivalent for Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester?▼
INEOS Envirez G8600 Bio-Derived Structural Polyester (INEOS Composites US) and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) achieve a 68% ASTM engineering compatibility score in Isophthalic & DCPD Marine Polyester Resins. Tensile strength delta is -4 MPa (-5.4%) and thermal HDT delta is -6 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
2. What is the ASTM D638 Tensile Strength and ASTM D648 HDT difference between INEOS Envirez G8600 Bio-Derived Structural Polyester and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester?▼
INEOS Envirez G8600 Bio-Derived Structural Polyester (INEOS Composites US) delivers ASTM D638 Tensile Strength of 70 MPa (10,153 psi) and ASTM D648 HDT of 88 °C, whereas Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) delivers 74 MPa (10,733 psi) and HDT of 94 °C. The net delta is -4 MPa (-5.4 %) tensile and -6 °C HDT.
3. Do INEOS Envirez G8600 Bio-Derived Structural Polyester and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester use the same catalyst or hardener cure system?▼
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 6 °C (88 °C vs. 94 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
4. How do US DOT 49 CFR Hazmat shipping rules and B2B drum/pack prices compare between INEOS Envirez G8600 Bio-Derived Structural Polyester and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, INEOS Envirez G8600 Bio-Derived Structural Polyester is priced at $1,710 per 225 kg Steel Drum ($7.6/kg) vs. $1,665 per 225 kg Steel Drum ($7.4/kg) for Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (delta: +0.2 USD/kg).
Related Drop-In Comparisons in Isophthalic & DCPD Marine Polyester Resins
INEOS Envirez G8600 Bio-Derived Structural Polyester (INEOS Composites US) and Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) are trademarks of their respective owners. CompositeMatrix Technologies Inc. is an independent North American B2B composite material intelligence registry; comparative ASTM D638, D648, D790, D2583, and D2196 figures are presented under the US legal doctrine of Nominative Fair Use (Lanham Act, 15 U.S.C. § 1125) and Feist Publications, Inc. v. Rural Telephone Service Co. (499 U.S. 340) for scientific and industrial cross-reference. Cure schedules, exotherm behavior, and laminate qualification must be verified by a licensed Naval Architect or Professional Engineer (PE) against current manufacturer batch Technical Data Sheets (TDS) and Safety Data Sheets (SDS).