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. The Thermoset Resins Division’s technical
sales representatives will assist in developing procedures to fit individual requirements.
INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 7/11
CORVE8117
Thixotropic Vinyl Ester Resin
Technical Data Sheet
CORVE8117 is a promoted, thixotropic, vinyl ester resin used in spray-up and hand lay-up applications. It is specifically
formulated for the boat, pool, spa manufacturing industries as well as those industries that desire high physical properties
and excellent fatigue performance.
FEATURES BENEFITS
Moderate Laminate Exotherm Good cosmetic surface and minimal glass print
Fast Trim Time Shorter cycle time and fast Barcol development
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gela tion properties with low foaming quality
Excellent Fatigue Performance 1 Long service life for composites under loading
Low Water Absorption and Excellent Blister Resistance 2 Eliminated need for repairing blisters in composites immersed
in water
Retention of Physical Properties After Immersion in Water for
15 Years
3
Minimal to no loss of physical properties after long term
exposure to water
RELATED PRODUCTS GEL TIME MEKP Level, % by weight
CORVE8115 10-15 Minutes 1.2
CORVE8119 20-25 Minutes 1.2
CORVE8121 25-30 Minutes 1.2
CORVE8123 32-37 Minutes 1.2
CORVE8129 35-45 Minutes 1.4
LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cps 400-600
Thixotropic Index 2.5-3.2
100 grams resin @ 77 F (25 C), initiated with 1.2% Hi-Point 90 by volume *
Gel Time, min:sec 15:00-20:00
Gel to Peak Exotherm Time, min:sec 7:00-15:00
Peak Exotherm 320-380 F (160-193 C)
Non-Volatile Content, % 51.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-49.0
Specific Gravity 1.00-1.04
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 ,000 psi 131 MPa 32,600 psi 225 MPa
Flexural Modulus, ASTM D790 4.7 x 10
5
psi 3,240 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Strength, ASTM D638 11,800 psi 81 MPa 16,300 psi 112 MPa
Tensile Modulus, ASTM D638 4.0 x 10
5
psi 2,760 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Elongation, ASTM D638 4.5 % 4.5 % 2.0 % 2.0 %
Barcol Hardness, 934-1 gauge, ASTM D2583 34 34 47 47
Heat Distortion Temperature, ASTM D648 210 F 99 C — —
* The 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
esters, we recommend only these four brands: Cadox L-50a (Akzo Nobel); Luperox DHD-9 (Arkema); Hi-Point 90 (Pergan); or Norox MEKP-925 (Syrgis). These
must be used at the appropriate percentage and suitable temperature. Contact your Interplastic Corporation representative for assistance.
1. Cycle Test Evaluation of Various Polyester Types and a Mathematical Model for Projecting Flexural Fatigue Endurance
2. A 15-Year Study of the Effective Use of Permeation Barriers in Marine Composites
3. Physical Properties Evaluation of FRP Composites After 15-Year Immersion in Water
NOTE: The technical papers above are available as PDF files on the www.interplastic.com web site.