Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin vs. Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin
Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin (Interplastic Corp) and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) achieve a 68% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is -9 MPa (-12.5%) and thermal HDT delta is -12 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin (Interplastic Corp) | B: Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | Interplastic Corp • IPC-COR61AA | Polynt Composites USA • POL-33750-ISO | Cross-Brand OEM Equivalent |
| ASTM D638 Tensile Strength (MPa / PSI) | 63 MPa (9,137 psi) | 72 MPa (10,443 psi) | -9 MPa (-12.5 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 80 °C (176 °F) | 92 °C (198 °F) | -12 °C (Verify Post-Cure) |
| ASTM D790 Flexural Strength (MPa) | 111 MPa | 120 MPa | -9 MPa (-7.5 %) |
| ASTM D2583 Barcol Hardness | 40 | 40 | 0 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 420 cPs | 480 cPs | -60 cPs (-12.5 %) |
| 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 | $6.2/kg • $1,395 (225 kg Steel Drum) | $7.2/kg • $1,620 (225 kg Steel Drum) | -1 $/kg (-13.9 %) |
| US Stocking Warehouses | Lakeland, FL • Houston, TX • Minneapolis, MN | Lakeland, FL • Houston, TX • Minneapolis, MN | 1–3 Days LTL Dispatch |
Companion process stack: Structural Core-Bonding Putty (0.55 kg/m² kerf fill) + Marine Vinyl Ester or Infusion Epoxy Matrix. Follow CORE BEDDING & RESIN UPTAKE: Grid-scored (GS) or grooved/perforated (GP) sheets require ~0.55 kg/m² extra resin for kerf/groove filling or a dedicated structural core-bonding putty.
Post-Cure Schedule Adjustment Advised: ASTM D648 HDT differs by 12 °C (80 °C vs. 92 °C). For elevated-temperature tooling or dark-colored marine hulls, perform a 4–6 hour post-cure ramp at 60–80 °C (140–176 °F) to lock in full cross-link density.
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: Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin vs. Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin
1. Is Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin a direct drop-in equivalent for Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin?▼
Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin (Interplastic Corp) and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) achieve a 68% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is -9 MPa (-12.5%) and thermal HDT delta is -12 °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 Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin?▼
Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin (Interplastic Corp) delivers ASTM D638 Tensile Strength of 63 MPa (9,137 psi) and ASTM D648 HDT of 80 °C, whereas Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) delivers 72 MPa (10,443 psi) and HDT of 92 °C. The net delta is -9 MPa (-12.5 %) tensile and -12 °C HDT.
3. Do Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin use the same catalyst or hardener cure system?▼
Companion process stack: Structural Core-Bonding Putty (0.55 kg/m² kerf fill) + Marine Vinyl Ester or Infusion Epoxy Matrix. Follow CORE BEDDING & RESIN UPTAKE: Grid-scored (GS) or grooved/perforated (GP) sheets require ~0.55 kg/m² extra resin for kerf/groove filling or a dedicated structural core-bonding putty. Post-Cure Schedule Adjustment Advised: ASTM D648 HDT differs by 12 °C (80 °C vs. 92 °C). For elevated-temperature tooling or dark-colored marine hulls, perform a 4–6 hour post-cure ramp at 60–80 °C (140–176 °F) to lock in full cross-link density.
4. How do US DOT 49 CFR Hazmat shipping rules and B2B drum/pack prices compare between Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin?▼
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, Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin is priced at $1,395 per 225 kg Steel Drum ($6.2/kg) vs. $1,620 per 225 kg Steel Drum ($7.2/kg) for Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (delta: -1 USD/kg).
Related Drop-In Comparisons in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa)
Interplastic CoREZYN COR61-AA-255 Low-Shrink DCPD Laminating Resin (Interplastic Corp) and Polynt Polylite 33750-10 Isophthalic Structural Laminating Resin (Polynt Composites USA) 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).