3350 W. 48^th Pl. Chicago, IL 60632-3000. Phone 773-927-3484, FAX 773-650-5853.

Source for liquid thermosets: silicones, moldmaking urethanes, casting plastics, polyester resins, epoxy.
Fiberglass fabrics, release agents, fillers and dyes.
All products available in small quantity.

GENERAL DESCRIPTION: EP7220 is a two component, room temperature curing, rigid, filled epoxy system with very low viscosity and excellent wetting characteristics. This makes EP7220 particularly attractive in wet lay-up applications of fiberglass or casting up to 1/2 inch thick. EP7220 uses a special "safety" hardener for greater safety.

Recommended mix ratio is 6 parts of A with 1 parts of B, by weight. This provides a 20 minute pot life, and a 24 hour cure time at room temperature. Pot life and cure time will vary depending on temperature, humidity and thickness. The resultant unreinforced epoxy has these properties:

Viscosity: 700 cps
Specific Gravity: 1.20
Hardness (durometer): 88 D
Shrinkage: 1.2%
Heat Resistance: 180°F
Dielectric Constant: 4.57
Volume Resistivity: 6.1 x 10¹⁵ ohm / cm
Moisture Absorption: 0.6 %
Tensile Strength: 9,000 psi
Compressive Strength: 16,000 psi
Flexural Strength: 15,000 psi
Color: ivory (other colors available upon request)

EP7220 is available in the following size kits:

1 Quart Kit: (2 lb 10 oz)
1 Gallon Kit: (10 lb 8 oz)
5 gallon Kit: (53 lb)
55 gallon drum Kit: (580 lb)