EV-400 Epoxy Varnish
A polyamide-cured epoxy wood varnish providing good chemical and solvent resistance. Weather durability will be equal or superior to any one component varnish. May be used over any one-component varnish to provide chemical resistance.
SURFACE PREPARATION: The surface must be clean, dry, free of wax, dirt, oil and grease. Old surfaces should be dry-sanded to remove any loose varnish and paint scale. Use C-2210 Paint Surface Cleaner to remove grease and oil from new wood surfaces, old paint and varnish surfaces.
MIXING PROCEDURE: Add exactly one part EV-410 catalyst to 2 parts EV-400 base component. Ratio must be accurate for best characteristics. Stir thoroughly and allow 30 minutes induction time before thinning. In high humidity weather allow 1 hour induction time to avoid curing agent "bloom." Avoid shaking which causes small bubbles in thick solution. Thinning eliminates bubbles. Filter thru a 60x48 mesh or finer paint strainer cone.
THINNING - New Wood: After the EV-400 and EV-410 components are mixed, reduce 50% with E-500 Epoxy Reducer (2 parts catalyzed varnish to 1 part reducer) and brush on for good surface penetration. Second and optional third coats may be brushed or sprayed on using following spray gun directions.
Spray Gun Directions: After the EV-400 and EV-410 components are mixed, reduce 25% with E-500 Epoxy Reducer (4 parts catalyzed varnish to 1 part reducer) (19 to 21 seconds with a #2 Zahn viscosity cup). Additional thinning may be required in hot climates. Three spray coats are recommended at 3 to 4 hour intervals.
Floorboard Application: After two to three sprayed-on coats at 25% reduction, immediately spray on a fourth coat reduced 50% with E-500 Epoxy Reducer which will bite into initial coats and flow out to provide a smoother, higher gloss.
CURE ACCELERATION: To shorten the cure time in cold weather, add EX-501 Epoxy Accelerator at a ratio of 1 to a maximum 3 liquid oz to 1 qt of catalyzed varnish, un-thinned. Stir thoroughly. One oz of EX-501 will reduce the pot life from 5 hours to 3 hours and the curing time from approximately 7 days to 4 days at 70°F. Do not exceed 3 oz per qt.
APPLICATION PROCEDURE: Epoxy varnish may be applied with any spray equipment rated for lacquer or enamel. Flooding spray or brush coats will cause crawling and cratering over old finishes or dry first coats on new wood. Recommended dry coat thickness 1 to 1.5 mils. Contamination from oil base coatings leaching from old pressure pot hoses or contamination from unclean or soluble plastic or plastic lined containers used for mixing or measuring will cause crawling. Spray gun head should be dismantled to remove residue from previous coatings before applying epoxy varnish.
POT LIFE: The sooner epoxy varnish is applied after the induction period the better the durability. Maximum pot life is five hours at 70°F. Discard materials when viscosity increases or becomes stringy when tested between the fingers. Do not add reducer to extend pot life after thickening occurs. Mix material fresh for each coat.
CLEAN UP: Use E-500 Epoxy Reducer for final flush cleaning before the varnish starts to polymerize in the equipment. MEK does not dissolve and flush all the epoxy resin from the equipment.
DRYING AND FULL CURE TIME: Dry to handle 3 to 5 hours. Full cure to develop solvent and chemical resistance is 7 days at 70°F. Lower ambient temperatures require a proportionally longer period. Full cured varnish will not be lifted by adhesives, fabric coatings, enamel or lacquer top coats.
RECOATING: Varnish coats which have aged more than 4 days should be dry scuff sanded with fine sandpaper or Scotch-Brite pads to break the gloss surface and provide tooth adhesion. Wipe the scuffed surface with C-2210 Paint Surface Cleaner using new, clean rags or paper towels to thoroughly remove the sanding residue.
One gallon Epoxy Varnish base component catalyzed and reduced 25% will cover approximately 600 sq ft with one coat.
Guaranteed shelf life, unopened, in protected storage at room temperature is four years from date of manufacture. Avoid long-range storage above 100°F. Not affected by freezing.
Each component is sold separately, or packaged in a kit. Recommended unit ratios: 1 qt EV-400 base component, 1 pt EV-410 catalyst, and 1 qt E-500 reducer.