GULFCOAST PAINT MFG., INC.
CHEMICAL MASTIC CM-15
HIGH BUILD EPOXY MASTIC
PRODUCT DESCRIPTION
A two component, high solids, chemical resistant amine cured epoxy mastic. Chemical Mastic CM-15 is specially modified with a proprietary blend of selective resins, wetting agents, penetrates and rust inhibitors to provide excellent adhesion and protection of sound, rusty steel surfaces, and to upgrade old, deteriorated coatings. Ideal as a coating system over marginal or poorly prepared surfaces where blasting is impractical or prohibited. Recommended as a high build primer under a wide variety of topcoats.
PRODUCT FEATURES
- Excellent adhesion to tight rust 7. Excellent build to protect sharp edges
- USDA Approved 8. Tight film, low permeability
- A high build primer or finish coat 9. Good chemical, abrasion and impact
4. Out performs standard epoxies resistance
5. Excellent against “undercutting 10. Available in many colors
6. Easy to apply, self-priming on steel 11. CM-15 Primer incorporates Micaous Iron
Oxide as the rust inhibitor pigment
TECHNICAL DATA
Colors: Standard Industrial Colors and Aluminum. Clean-Up: S-74 or SA-17
Finish: Gloss - 85 5% Pot Life: 3 hours @ 75F when reduced
with S-74 Volume Solids: 82% 3%
Recoat Time: 8 hours at 75F (5 dry mils) Coverage (Theoretical): 1,315 sq. ft. at 1.0 mil DFT Application: Spray, brush or roller
Recommended Thickness: 5.0 - 7.0 dry mils at Application Temperature: 45 - 120F
sq. ft. per gallon
Dry Service Temperature: 150F max
Mixing Ratio: 4:1 by volume. Mix 4 parts Base (Part A) to 1 part Hardener (Part B) Shelf Life: 1 year minimum
Induction Time: None Packaging: 5 gal or 1 gal units
Thinning: S-74 Reducer V.O.C. (white) 1.34 LBS/GL (161 gms/l.)
Phone: 251-964-7911 30075 County Rd. 49, Loxley, AL 36551 Fax: 251-964-7918
GULF COAST PAINT MFG., INC.
CM-15 Page 2
CHEMICAL RESISTANCE
(Splash/Spillage and short term immersion service). For Internal Lining Service, contact Gulf Coast Paint for which chemicals are recommended for long term service.
Aluminum Nitrate - 50%
Aluminum Sulfate - 50%
Apple Juice
Beer
Brine
Barium Chloride - 50%
Boric Acid - 25%
Calcium Chloride - 50%
Castor Oil
Copper Sulfate - 50%
Corn Oil
Cutting Oil
Diesel Fuel
Diethylene Glycol
Distilled Water
Ethylene Glycol
Fish Oil
Fuel Oil
Gasoline (unleaded)
Glycerin
Glyoxal
Grape Fruit Juice
Hexylene Glycol
Hydraulic Fluid
Hexane
Honey
Iodine
Jet Fuel - (JP4, JP5, JP7)
Kerosene
Ketchup
Linseed Oil
Lactic Acid - 25%
Linseed Oil
Milk
Mineral Oil
Mineral Spirits
Molasses
Motor Oil
Mustard
Naptha (Aliphatic)
Oleic Acid
Olive Oil
Orange Juice
Peanut Oil
Phosphoric Acid - 20%
Power Steering Fluid
Rock Salt
Sodium Bisulfate - 50%
Sodium Bromide - 40%
Sodium Carbonate -30%
Sodium Hydroxide - 50%
Sulfuric Acid - 20%
Transmission Fluid
Tomato Juice
Vegetable Oil
Whiskey
Wine
Xylene
PRODUCT USES
Chemical Mastic CM-15 is formulated for use over tightly adherent rusty steel and previously painted surfaces limited to hand or power tool cleaning. Although blasting of steel is the best method of preparation, Chemical Mastic CM-15 will provide excellent adhesion and protection to non-blasted steel surfaces in any industrial facility. Specific areas include structural steel, tanks, vessels, water towers, equipment, pipe lines and racks, metal buildings, fences, catwalks, bridges, railings, fire escapes, etc., in chemical processing plants, pulp and paper mills, sewage and waste water treatment facilities, fertilizer plants, petroleum refineries, electric generating stations, coal handling operations, marine installations, etc. Chemical Mastic CM-15 can be used as a high performance primer under epoxy, polyurethane, vinyl, acrylic, alkyd topcoatingto upgrade corrosion resistance in severe chemical exposures.
SURFACE PREPARATION
Remove all dirt, grease, oil, soil, chemical contaminants, and other matter before any mechanical preparation. High pressure water cleaning is recommended. Prepare and paint only clean surfaces in accordance with Steel Structures Painting Council (SSPC) or National Association of Corrosion Engineers (N.A.C.E.) specifications.
Phone: 251-964-7911 30075 County Rd. 49, Loxley, AL 36551 Fax: 251-964-7918
GULF COAST PAINT MFG., INC.
CM-15 Page 3
Surface Preparation - continued
1. Steel
a. Sand Blast - Best
Sand Blast to a “Commercial” ( SSPC-SP6-63) or “Near White” metal finish. Prime same
day, ifpossible.
b. Power Tool Clean
Follow instructions as outlined in SSPC-SP3-63 specification
c. Hand Cleaning
Follow instructions as outlined in SSPC-SP2-63 specification.
2. Galvanized Steel
a. New
Brush blast per SSPC-SP7, or prime with VE-180 Vinyl Wash Primer per label instructions.
b. Old, Weathered, or Rusty
Remove all oil, grease, dirt, and other foreign matter. Surface should be reasonable clean,
dry and free of contaminants. Remove all loose rust, etc., as outlined above under “steel”.
3. Previously Painted Surfaces
Remove all loose, peeling, or blistered paint, and any other surface contaminants. Make sure
surface is sound and dry. Apply a test patch of CM-15 over the existing coating to insure com-
patibility.
4. Concrete
All new concrete must be cured at least 28 days. Do not use form release agents, surface
hardeners, or curing compounds.
Surface Preparation
All concrete should be prepared in accordance to the American Concrete Institute (ACI), Steel Structures Painting Council (SSPC), and National Association of Corrosion Engineers (NACE) concrete specifications. Remove all dirt, dust, oil, grease, laitance, efflorescence, loose or unsound concrete, and any chemical contaminants by such methods as high pressure water blast, wet or dry abrasive blast, vacuum shot blast, acid etching and other accepted surface preparation methods. A combination of these methods is normally used.
For on-grade concrete slabs check that a moisture vapor barrier film has been used. Testing may be necessary. Check for the presence of hardeners or residual forming membrane curing agents. Repair all cracks, spalled concrete, voids and expansion joints.
Phone: 251-964-7911 30075 County Rd. 49, Loxley, AL 36551 Fax: 251-964-7918
GULF COAST PAINT MFG., INC.
CM-15 Page 4
Coating System
The properly sound, cleaned concrete must be primed first with either PC-149, PC-155, PC-1702, or PC-1703 Epoxy Concrete Primer per label instruction. Two coats of CM-15 Epoxy at approximately 5-7 mils dry per coat is recommended for light traffic areas. For heavy forklift and high abrasion areas, CT-352 Polyester Polyurethane Coating at 2-3 mils dry film thickness is recommended as the top coat over one coat of CM-15 Epoxy.
V.O.C.
UnthinnedThinned 5%Thinned 10%Thinned20%
1.34 lbs/gl1.6 lbs/gl1.83 lbs/gl2.23 lbs/gl
161 GMS/Liter192 GMS/Liter219 GMS/Liter267 GMS/Liter
MIXING INSTRUCTIONS
Stir each component to a uniform consistency, using a slow speed variable speed explosion proof drill with a Jiffy Mixer. Do not mix by hand. Make sure any pigment settled to the bottom is incorporated. Do not vary proportions. Chemical Mastic CM-15 is prepared by mixing 4 parts base (Part A) to 1 part Hardener (Part B) with a power mixer. CM-15 may be thinned up to 10% by volume for airless spray, and up to 20% by volume for conventional spray. When rolling, thin 10-20% by volume.
POT LIFE
The Pot life of CM-15 is about 3 hours at 75F, and 1-1/2 hours at 90F.
APPLICATION PROCEDURE
Airless Spray Graco Binks
Gun 205-591 Model 500
Pump Bulldog 30:1 Mercury 5C-30:1
Tip Range .019 to .023 .019 to .023
Hose 3/8 inch I.D. .3/8 inch I.D.
Pressure 2400 to 2700 psi 2400 to 2700 psi
Conventional Spray DeVilbiss Binks
Gun MBC or JGA #18 or #62
Fluid Tip D 67PB
Air Cap 64 67
Atomizing Pressure 60 psi 60 psi
Pot Pressure 15 to 20 psi 15 to 20 psi
Hose 1/2 inch I.D. 1/2 inch I.D.
When spraying, use a 50% overlapping crosshatch pattern to minimize the occurrence of pinholes. Do notapply to surfaces below 45F or above 120F. Do not apply over dew or frost. The surface should be dryand at least 5F above the dew point.
Phone: 251-964-7911 30075 County Rd. 49, Loxley, AL 36551 Fax: 251-964-7918
GULF COAST PAINT MFG., INC.
CM-15 page 5
RECOAT TIME
MINIMUMMAXIMUM
TEMPERATURETACK FREERECOAT RECOAT
90°F1 - 2 hours5 - 6 hours3 days
75°F3 - 4 hours7 - 8 hours7 days
50°F8 - 12 hours36 - 48 hours10 days
Times may be longer for thickness above 5 dry mils. For safety and proper product curing, good ventilation is necessary when painting indoors or in confined areas. Be sure the batch numbers are all the same to provide uniform color. Epoxy coatings may yellow or darken during application and after final cure. This will affect the color but will have no effect on the performance of the product. Heaters that emit carbon dioxide and carbon monoxide can cause the coating to yellow. For maximum interior gloss and color retention apply 1 topcoat of PC-270 Polyester Epoxy. For maximum exterior gloss and color retention apply a topcoat of CT-370 polyurethane.
CAUTIONS
CM-15 is flammable. Keep away from all sources of ignition during mixing, application and cure. CM-15 Hardener is corrosive. The Hardener and Base can cause eye and skin burns as well as allergic reactions. Use goggles, fresh air masks or NIOSH approved respirators, protective skin cream and protective clothing. This product is sold without warranty as to performance expressed or implied. Users are urged to make their own tests to determine the suitability for their particular conditions.
SEE MATERIAL SAFETY DATA SHEET FOR FULL SAFETY PRECAUTIONS.
FOR PROFESSIONAL AND INDUSTRIAL USE ONLY
KEEP AWAY FROM CHILDREN
Technical Bulletin GCP-15 Rev 12/15
Phone: 251-964-7911 30075 County Rd. 49, Loxley, AL 36551 Fax: 251-964-7918