C.G.Edwards & Co.Inc.

272 Dorchester Ave, P.O.Box 358
Boston, MA 02127
Phone: (617)268-4111-4112 * Fax:617-268-8845
E-mail: websales@cgedwards.com

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Dimetcote 302H quick reference

Components 2
Mixing ratio (by volume)9 part resin to 1 part cure
Curing mechanismSolvent release and cure reaction with atmospheric moisture
Volume solids
(ASTM D2697, modified)
67% ± 3%
Dry film thickness (per coat)2-4 mils (50-100 microns)
Theoretical coverageft²/galm²/L
1 mil (25 microns) 125131.0
3 mils (75 microns) 41710.3

Application Data
Environmental conditions
      Air20 to 120-7 to 49
      Surface20 to 130-7 to 54
Surface temperatures must be at least 5°F (3°C) above dew point to prevent condensation. At freezing temperatures, surface must be free of ice.
Pot Life (hours)°F/°C
Drying time (ASTM D1640) @ 3 mils @ 50-90% RH
Temerature, (°F/°C)90/3270/2150/10
Hard (hours)3618
recoat (hours)¾1 ½4
maximum topcoat (months)333
Equipment cleanerThinner or Amercoat 12

Application Procedure
Base and converter are packaged in the correct proportions which, when mixed together, yield 1 gallon or 5 gallons of Dimetcote 302H.
1.Flush all equipment with thinner or Amercoat 12 cleaner to remove any moisture that may be present.
2.Stir mixed base and converter with an explosion-proof power mixer.
3.At temperatures lower than 60°F (16°C), allow a 15 minute induction time before using. Add about 10 minutes for each 10°F (6°C) lower temperature.
4.Strain material through 30 mesh screen to remove undispersed material and prevent possible clogging of equipment.
5.Pot life is limited and shortened by high temperatures; do not mix more coating than will be used within the specified times.
6.Thin for workability or when a rough film or "dry spray" is obtained because of fast solvent evaporation during hot weather or high wind. Use 1 pt. of T-10 per gallon of mixed coating.
7.Adjust spray equipment to apply an even wet coat with minimize overspray.
8.Continue very slow stirring during application to maintain uniformity of material. Avoid fast stirring as this may cause a rise in material temperature.
9.Apply in even, parallel passes, overlap each pass 50 percent. Pay special attention to welds, cut-outs, sharp edges, rivets, bolts, etc., to insure proper thickness. Keep pressure pot at approximately the same elevation as spray gun for proper material delivery to gun.
10.When dry through, check film thickness with a nondestructive dry film thickness gauge. Recoat if greater thickness is required. Normal recommended thickness is 3 mils (75 microns).
11.Random pinholes, holidays and small damaged or bare areas can be touched up by brush when film is dry to touch. Larger areas should be resprayed.
Note - Drying and topcoating times will be longer when film thickness is over 4 mils (100 microns), ventilation and air movement are restricted and temperatures are lower.
12.In confined areas, ventilate with clean air during application and drying until all solvents are removed. Temperature and relative humidity of the ventilating air must be such that moisture will not condense on the surface until after material is dry hard.
13.Clean equipment with thinner or Amercoat 12 cleaner immediately after use or at least at the end of each working day or shift. Clean spray guns more often during hot weather. When left in equipment, Dimetcote 302H will harden and plug spray equipment.

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