EP4111 - Waxed Polyester Finishing Resin
GENERAL DESCRIPTION: EP4111 is a room temperature curing,
resilient, clear transparent, polyester finishing resin for coatings. It cures in the presence of air to a hard,
sandable and polishable surface. EP4111
is often called surf board resin because of the outstanding results in that
application due to its hard, tough, crack-resistant nature and clarity which
allows graphics to show through.
Successful applications include boat coating, gel coat resurfacing (can
be colored to match most existing boats), coating cinder block and masonry
surfaces, recoating fiberglass awnings, table top finishing or other surfacing
applications.
MIX RATIO: The gel time and cure time are
both dependent on three parameters: (1) the percentage of MEK-P catalyst used;
(2) the temperatures of all ingredients and the surrounding environment; (3)
the mass concentration of the resin, i.e., a solid-cast shape vs. thin
film. A good starting point, at 72°F, is 1-1/4 % catalyst
by weight. This is equivalent to 10 drops catalyst per ounce of resin, or 1
teaspoon catalyst per pint of resin. This level will result in a 15 min pot
life and a 24-hour cure. As temperatures rise above 72°F, decrease catalyst,
and vice-versa. Polyester resins will not cure below 60°F. Experiment until the
correct ratio is determined for your specific application. In general, mix what
you can use in 10 minutes. Apply a thin even coat of EP4111 with catalyst at
least 1/16” over entire surface. Let the coating cure for at least 24 hours. If
a second coat is needed, the first coat must be thoroughly sanded and cleaned
prior to next application. Remember to always wear eye-protection when
working with polyester resin and catalyst.
The resultant room temperature curing plastic has these
properties:
Viscosity 500
cps
Specific Gravity 1.11
Hardness
(durometer) 80
D (32 Barcol)
Tensile
Strength 9000
psi
Compressive
Strength 20,000
psi
Flexural
Strength 16,000
psi
Maximum
Use Temperature 140°F
EP4111 is available in the following sizes:
Quart
Kit 2-1/4
lb
Gallon
Kit 9
lb
5
Gallon Kit 45
lb
55
Gallon Drum 500 lb
Qt, Gal, and 5 gallon sizes include the catalyst. With drums, order catalyst separately.
Warning: Uncured product may cause respiratory or
skin irritation with possible sensitization. Use only with adequate
ventilation. If skin contact occurs, wash thoroughly with soap and water. In
case of eye contact, flood with water and call a physician. Use of gloves and
face shield is recommended. This
product should not be used near food or where prolonged skin contact may occur.
Disclaimer: This information is based on sources that we
believe to be accurate. It is offered in good faith, but without guarantee,
since conditions of use are beyond control. All risk of use are assumed by the user.
