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 9 quick reference

Components 2
Curing mechanismSolvent release and reaction with atmospheric moisture
Dry film thickness2-5mils (50-100 microns)
Theoretical coverageft²/galm²/L
1 mil (25 microns) 99224.3
2½ mils (65 microns) 3979.7

Application Data
Mixing ratio (weight)As Packaged
Pot Life (hours)°F/°C 
Environmental Conditions
Air0-120-18 - 49
Surface0-130-18 - 54
Relative Humidity50-90%
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.
Drying time (ASTM D1640) & 3 mils @ 50-90% RH °F/°C
Touch (minutes)10 
Through (minutes)18 
Topcoat (hours)24 
ThinnerBelow 65°Amercoat 65
Above 65°Amercoat 101
Equipment CleanerAmercoat 12 or thinner

Application Procedure
Powder and liquid are packaged in the correct proportions which, when mixed together, yield 0.85 gallon or 4 gallons of Dimetcote 9.
1.Flush all equipment with thinner or Amercoat 12 cleaner to remove any moisture that may be present. Moisture can cause hardening of coating in equipment.
2.Stir liquid with an explosion-proof power mixer.
3.Discard desiccant bag from powder can and gradually stir powder into liquid. Continue stirring until powder is well dispersed, and uniformly blended to a workable consistency.
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 following times:
Pot life (hours)°F/°C
Important - At the end of the pot life, "kick-out" or separation of liquid and solids occur, together with gassing. Do not keep mixed material which has exceeded the pot life in tightly closed containers as gassing can create enough pressure to cause containers to burst. Cover containers loosely.
6.Keep containers loosely covered during use to prevent skinning or gelling due to moisture in air. Skim off skins and strain material through cheese cloth or 30 mesh screen to remove any remaining skin pieces. Discard gelled material.
7.Thin only for workability or when a rough filmor "dry spray" is obtained due to fast solvent evaporation during hot weather or high wind. Use no more than 1 pint thinner per gallon mixed coating, as follows:
Surface temperatureThinner
above 70°FAmercoat 101
below70°FAmercoat 65
8.Adjust spray equipment to apply an even wet coat with minimize over spray.
9.Continue very slow stirring during application to maintain uniformity of material. Avoid fast stirring as this may cause a rise in material temperature and moisture entrainment shortening pot life and causing gelling.
10.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.
11.Prevent contact with water until the freshly applied coating is dry to touch.
12.When dry through, check film thicknesswith a nondestructive dry film thickness gauge. Recoat if greater thickness is required. Normal average thickness range is 2.0 - 5.0mils. Spot readings should not exceed 8mils as higher thicknessesmay develop cracking. For high temperature applications, a maximum of 3 mils dry film thickness is required.
13.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 2½mils, ventilation and air movement are restricted, temperatures are lower or relative humidities are lower. A water mist sprayed over the coating when the film is dry to touchwill accelerate hardening at lower humidities.
14.In confined areas, ventilate with clean air during application and drying until all solvents are removed. Temperature and relative humidity of the air must be such that moisture will not condense on the surface until after material is dry to touch.
15.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, Amercoat 9VOC will harden and plug spray equipment.

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