Marine – Interplastic Corporation

Our line of marine resins provide excellent surface finish, water resistance and ease of use no matter which process you use. Our off the shelf products provide fast fill, flexible gel times and great cosmetics for infusion or hand layup. We can customize the right product for your application.

Low HAP, MACT Compliant Series

CORVE8121LH Series

A line of promoted, thixotropic vinyl ester resins with excellent physical properties, along with fast hardness development for spray-up and hand lay-up applications for the boat and pool manufacturing industries.

The series contains a maximum of 35% styrene (HAP) by weight, which meets the EPA 40 CFR Part 63 requirements of the National Emission Standards for Hazardous Air Pollutants (HAP) for boat manufacturing. These products also meet the current VOC requirements of California SCAQMD Rule 1162 for "High Strength Resin".

These low HAP, 100% vinyl ester resins are promoted, thixotropic, and feature excellent physical properties. They also have fast Barcol development, which is very convenient for the spray-up and hand lay-up techniques used in boat, pool and spa manufacturing. Peak exotherm can be reached in as little as 15 minutes; gel times for the series range from 15 to 40 minutes.

The vinyl ester used in the low HAP series is part of the same resin formula evaluated in the Interplastic Corporation 15-year immersion study. Laboratory analysis concluded that after 15 years of immersion in water at ambient temperatures, laminate panels constructed with 100% CoREZYN vinyl ester resin or a vinyl ester skin coat showed no signs of blistering. The CoREZYN vinyl ester resin created a barrier impervious to water and therefore prevented osmotic blistering. An additional year of study concluded that these same panels retained their original physical properties as well. Flexural strength, flexural modulus and Izod impact strength were measured. Visit literature/technical papers to download a PDF of these award winning studies or to order copies.

MVR8039

MVR8039 is a promoted, thixotropic, modified vinyl ester resin. It is designed for marine laminate construction where optimum physical properties, hydrolytic stability, and surface characteristic retention are desired. This product has been evaluated for blistering of gel-coated panels exposed to boiling water. These panels typically withstand 150-170 hours of boiling water immersion before any signs of blistering occur. It contains less than 35% sytrene (HAP) and is our workhorse MVR marine laminating and tooling resin.

Infusion

MVR8071

A promoted, non-thixotropic, vinyl ester/polyester resin blend, MVR8071 is designed for the fabrication of large parts using the vacuum infusion process (VIP). It is our workhorse marine infusion resin that provides fast fill times and excellent cosmetics.

Open Molding

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 product line includes products for filament winding, hand lay-up, spray and vacuum infusion. 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. Both promoted and unpromoted versions of most of these resins are available. The flagship products in this category are CORVE8400 (unpromoted) and CORVE8401 (promoted).

CORVE844XB

CORVE8440B (unpromoted) and CORVE8441B (prepromoted) are thixotropic corrosion resistant, fire-retardant resins that meet the Flame Grade A, Physicals Grade A and Electrical Class O requirements of MIL-R-21607E and are on the QPL-21607-29 list. These products also meet the Grade B and Class 1 and Class 2 requirements of MIL-R- 24719 (SH).

High Performance CORVE812X Series

This extremely tough thixotropic line of vinyl esters is specially formulated for spray-up and hand lay-up requirements. These resins are designed to be easily worked with minimal drain-off, making them ideal for large vertical applications like boat hulls and swimming pool walls. These resins come in several different viscosities and gel times such as 8123 (32-37 min) and 8129 (35-45 min).