All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. Our technical sales representatives will
assist in developing procedures to fit individual requirements, but all advice is accepted at your risk and should be checked for
suitability to your particular processes. These test data and properties are based on results obtained for a specific material under the
specified test conditions. They are not to be used as specifications and are not warranted as performance attributes for any product or
system. Specifications and properties of standard production material may vary slightly from those in this report. Interplastic
Corporation makes no warranties regarding any material and/or samples described in this report unless that representation is provided
to your company in writing by a Technical Director of Interplastic Corporation or one of his or her managers.
INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 9/21/17
CORVE8425 is a corrosion resistant, promoted, thixotropic vinyl ester resin for use in open molding applications.
FEATURES BENEFITS
100% Vinyl Ester Resin Excellent physical and corrosion properties
Promoted Resin System Ready for immediate use in customer applications
Class 1 Out of the Drum No special mixing equipment or other materials needed
Contains Less Than 46.2% Styrene (HAP) Federal MACT-Open Molding Non-Atomized
Corrosion Resistant resin
Contains Less Than 48% VOC SCAQMD Rule 1162-compliant corrosion resistant resin
RELATED PRODUCTS GEL TIME
CORVE8425-30 25-35 Minutes
LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cps (see Note 1 below) 450-650
Thixotropic Index 2.0-3.5
100 grams neat resin @ 77 F (25 C), initiated with 1.75% MEKP-925H by weight *
Gel Time, min:sec 15:00-20:00
Gel to Peak Exotherm Time, min:sec 9:00-16:00 G
Peak Exotherm 315-375 F (157-191 C)
Non-Volatile Content, % 52.1-55.0
Hazardous Air Pollutant (Styrene) Content, % <46.2
VOC Content, % 45.0-47.9
Specific Gravity 1.15-1.17
Note 1: The viscosity sample is mix well, adjusted to 77 F, and allowed to sit unagitated in a 77 F water bath for 20-22 minutes before the
viscosity measurements are performed.
G Denotes guideline. This is a typical result but not a specification.
TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting 1/8 inch (3.2 mm) Laminate
Construction Not Applicable 4 Plies 1.5 oz/ft
2
, 33% Glass Mat
Flexural Strength, ASTM D790 19 ,500 psi 134 MPa 25,400 psi 175 MPa
Flexural Modulus, ASTM D790 4.7 x 10
5
psi 3,200 MPa 11.0 x 10
5
psi 7,590 MPa
Tensile Strength, ASTM D638 12,700 psi 88 MPa 13,900 psi 85.8 MPa
Tensile Modulus, ASTM D638 4.8 x 10
5
psi 3,300 MPa 12.8 x 10
5
psi 8,830 MPa
Tensile Elongation, ASTM D638 4.0 % 4.0 % 1.4 % 1.4 %
Barcol Hardness, 934-1 gauge, ASTM D2583 35 35 44-48 44-48
Heat Distortion Temperature, ASTM D648 225 F 107 C -- F -- C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (catalyst), shop temperature, humidity, and type of fillers used. In order to meet
your individual needs consult our technical sales representative for assistance. If using methyl ethyl ketone peroxide (MEKP) to gel and cure CoREZYN vinyl ester
resins, we recommend only these three brands: Cadox L-50a (Akzo Nobel); Luperox DHD-9 (Arkema); and Norox MEKP-925H (United Initiators). These must be
used at the appropriate percentage and suitable temperature. Contact your Interplastic Corporation representative for assistance.
FLAME TEST PROPERTIES
Construction 2 Plies 0.75 oz/ft
2
, 37% Glass Mat
ASTM E84, Flame Spread Index 18.3
ASTM E84, Smoke Development Index 140
CORVE8425
Corrosion Resistant Vinyl Ester Resin
Technical Data Sheet