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CoREZYN® Resins

Corrosion Resistant Vinyl Ester Resins

Bisphenol-A-Epoxy Vinyl EstersBisphenol-A-Epoxy Vinyl Esters

Interplastic's epoxy-based vinyl ester resins were introduced in 1972. In extremely challenging environments that require superior physical performance and corrosion resistance, Interplastic CoREZYN vinyl esters are consistently outstanding performers. Our FRP customers, who serve industries as diverse as chemicals, construction, electrical, marine and transportation, count on CoREZYN brand resins to help them make the products that meet their specific engineering requirements and fire-resistant capabilities.

High Performance CORVE8300 Series

This is our standard, high performance line of bisphenol-A epichlorohydrin epoxy-based vinyl ester products. They are the workhorses of the product line and are the most versatile. They provide excellent resistance to acid, alkalies, and oxidizing chemicals. CORVE8300s also have excellent high temperature capabilities and good solvent resistance. They are offered in different styrene contents and molecular weights, including the COR VE8360, a low VOC formula that contains less than 35% VOC/HAP. These are well suited for use in fabricating tanks, pipe and process equipment, as well as other applications. Most common method of application includes filament winding or hand lay-up, and occasionally spray.

Lower Viscosity CORVE8100 Series

This line of vinyl ester resins are lower intrinsic viscosity versions of the CORVE 8300 series, corrosion resistant vinyl ester resins for use in centrifugal casting, pultrusion, vacuum infusion, and RTM applications, and are well suited for use in fabricating tanks, pipe and process equipment, as well as other applications. They are manufactured from ingredients listed as acceptable in the FDA Code of Federal Regulation Title 21, CFR 177.2420, and may be safely used as a component of articles intended for single or repeated use in contact with food as prescribed in the regulation. When cured, they exhibit physical properties similar to the CORVE 8300 line.

Fire Retardant CORVE8400 Series

These fire retardant vinyl esters are brominated, bisphenol-A epichlorohydrin epoxy-based resins, and therefore also exhibit outstanding corrosion resistance. Our vinyl ester and modified vinyl esters resins meet the stringent testing requirements of the ASTM E84 Tunnel Test, with flame spread ratings of either <75 (Class 2) or <25 (Class 1), as well as an ASTM E162 flammability rating of 20.5, and an ASTM E662 smoke emission rating after 90 seconds of ≤1, and after 240 seconds of ≤20. We have a selection of these resins that can be formulated to meet UL 94V, ASTM D635, MIL-R-21607E or MIL-R-24719. The COR VE8440, COR VE8441 and COR VE8470 are excellent choices. The product line includes products for filament winding, hand lay-up, spray and vacuum infusion. One product in this series, CORVE 8480N, is based on Novolac epoxy, which imparts even greater heat and corrosion resistance for extremely corrosive environments. In general, these resins are well suited for use in conventional corrosion applications, such as tanks, pipe and process equipment, as well as transportation components and building and construction.

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