Chemoguard : Epoxy Zero VOC Chemical Resistant Coating System  

 

Product Description :

 

Chemoguard coating system is amine cured, 100% solids, two-component high build, heavy-duty epoxy protective coating designed to combat corrosion, erosion, abrasion, chemical attacks, temperature extremes and other destructive conditions.

 
Features and Benefits :
   

Easy to apply and can be applied via airless spray, brush and roller.

Eliminates solvent hazards and ventilation problems.

High build coatings that result in fewer labour stops, less down time and lower application costs.

Produce thick non-porous and highly resistant film as compared to conventional solvent-borne coatings that produce thin films with inherent porosity.

Ideal for heavy industrial, chemical, marine, splash and spillage, fresh water, sea water and chemical immersion.

Excellent resistant to dilute acids, alkalis and certain solvents.

Have excellent adhesion, toughness, abrasion resistance and overall chemical resistance.

Excellent impermeability to solvent or fuel vapours, moisture vapour and gases and control of corrosion by inhibiting the migration of oxygen, moisture and other corrosive substances to the surface of the substrate.

Excellent impact and mar resistant.
High adhesive strength and mechanical properties.
Practically no shrinkage of coatings during curing.
Can be cured in conditions of high humidity and low temperatures.
Excellent adhesive characteristics ensure a tight bond to most cleaned sound surfaces.
Excellent long-term protection with longer maintenance-free life.
   
     
 

Recommended uses :

 
     
 

Chemical Plants

Reservoirs

Petroleum Oil Industry

Foodstuffs Industry

Paper & Cellulosic Industry

Breweries

Shipbuilding industry

Wine Storage Vessels

Agricultural Equipment

Dairies

Sewage Treatment Plants

Fertilized Industry

Nuclear Power Plants

Textile Industry

Sugar Industry

Confectioneries

Water Treatment Plants

Pipelines

Tidal & Splash Zones

Sewage Drains

Drilling Mud Tanks

Steel Plants

Refineries

Fuel Storage Tanks

Areas exposed to or immersed in sea water

Areas submerged in water

 
     
  Surface Preparation :  
     
 

Steel - The surface should be blast cleaned to SSPC-SP 10-63T or NACE No. 2 i.e. loose rust and scales, dirt, grease, oil, paint, wax, weak oxide films and other contaminants should be removed. Blast cleaning to SSPC-SP 5-63 or NACE No. 1 is recommended where heavy corrosive conditions exist or coating is required to be immersed. That means a surface with a grey metallic colour, slightly roughened to form a suitable anchor pattern for coatings. This surface is free of all oil, grease, dirt, mill scale, rust, corrosion products, oxides, paint and other foreign matter. In absence of blast cleaning, prepare the metal surface by wire brushing, sanding, grinding, scrapping or chipping with hand or power tools. Remove all the contaminants.

Non-ferrous Metals - The metal surface should be grit or sand blasted to ensure complete removal of loose particles and slightly roughened to form a suitable anchor pattern for coatings. Remove dirt, dust, oil, old paint etc. Degrease the surface with degreasing solvents like xylene or tri-chloroethylene. Apply one coat of Anuprime - 291 Wash Primer for obtaining maximum adhesion.

Concrete: New or poured concrete contains a considerable quantity of surplus water. For best results, new concrete surfaces should be clean, dry and well cured before coating. New concrete allowed to cure or aged for minimum of 30 days at temperatures over 25° C prior to surface preparation and coating application which will help assure maximum performance of the coating system and satisfactory coating adhesion.

New or old concrete should be grey or grey-white color and free from pits, pockets and holes. Prepare the surface with abrasive blasting or power tools. Surface imperfections should be filled in with DURAPATCH. No cement dust or sand should be dislodged. It is always recommended to clean the surfaces with abrasive blast cleaning. In absence of blasting, etch the surface with 10-15% muriatic acid diluted in water. Allow this acid solution to remain on the surface for 10-15 minutes or until the bubbling stops. Thoroughly rinse the floor with water to remove all traces of acid. Allow the floor to dry completely before painting.

Concrete surface requiring a primer should be primed with Chemoguard # 888 Primer reduced 33% with Anusol - ETP Epoxy Thinner for assuring maximum penetration of the coating into the concrete and a better bond of coating system to the substrate. After the initial coat has dried for 24 hours, apply 1 full coat Chemoguard # 888 Primer followed by two coats of Chemoguard # 999 Topcoat.

Curing:

Chemoguard coatings can be applied to wet surfaces when the ambient temperature is as low as 0° C. Do not apply when temperature can be expected to drop below 0° C within 6 hours after application. Under these conditions, the cure will be very slow but not otherwise affected. These coatings have the ability to harden even at 0° C but subsequent exposure to high temperatures is necessary to cure. Complete curing of the system takes place at room temperature in 7days. However, the room temperature should not be below 20° C. Post curing at 70-80° C for few hours is strongly recommended. Infrared lamps, steam and hot water can effect post curing. Post curing enhances the mechanical strength besides ensuring complete curing.

Pot Life:

Working Pot life after mixing base and hardener is 45 minutes to1 hour at 25° C. At higher temperatures, the pot life of the material is drastically reduced. It has been noted that packing ice around the mixing or spray pressure pot will extend pot life.

The material will dry to touch within 5-7 hours with significant toughening of the film overnight and full curing 7 days at 25° C. Allow the primer coat to gel to the tacky stage and at this stage further coat is applied so as to ensure maximum adhesion between the two coats.

Mixing Instructions:

When the temperatures are higher than 25° C, refer to above paragraph on "Pot Life" to determine the quantity to be mixed. DO NOT MIX MORE THAN CAN BE USED WITHIN 1 HOUR.

Mix 2 parts of base with 1 part of hardener by volume. Continue mixing for 5 minutes minimum to ensure proper mixing.

Thinners:

In exceptional circumstances, ANUSOL-ETP Solvent in amounts upto 10% may be added to this coating system for ease of application. Neither alcohol, higher ketones nor glycol ethers should be used since these solvents impair the water resistance of the cured films. When the coating contains solvent, dry film thickness of the applied coating should not exceed 150 microns.

Chemical Resistance:

Lack of Chemical Resistance is not the most common cause of coating failure. Inadequate surface preparation or application of coatings under less than ideal conditions responsible for coating failure. Chemoguard coating system has been designed to tolerate adverse conditions of surface preparation and application albeit with shorter life for all types of service except immersion. The stressed of immersion service are so great that the best surface preparation possible must be specified. Chemoguard Coating System is not recommended for immersion service except with specific reagents but its use for splash and spillage service is almost unlimited. This system is suitable for immersion service at 25° C in the under mentioned chemicals

 
     
 

System - 1 coat of Chemogurad # 888 Primer + 2 coats of Chemoguard # 999 Topcoat.

 
Cure Schedule - 14 days @ 25° C @ 50% relative humidity. Tested in the laboratory for 1 year only.
 
     
 

Sulphuric Acid 70%

Naphthenic Acid

Lactic Acid

Phosphoric Acid 50%

Hydrochloric Acid 10%

Nitric Acid 10%

Acetic Acid 10%

Formalin

Butyl Benzyl Phthalate

di-n-Butyl Phthalate

di-Octyl Phthalate

Citric Acid 10%

n-Ethyl Hexyl Acrylate

Ethylene Glycol

Glycerol

Hexylene Glycol

Polypropylene Glycol

Hexane

Petroleum Naphtha

Petrol

Nonyl Phenol

Creosote Oil

Tallow

Tap Water

Sea Water

Distilled Water

Carbon Tetrachloride

Cutting Oils

Hydrogen Peroxide 20%

Potassium Hydroxide 20%

Sodium Chloride

Ammonia 40%

Sodium Hydroxide 20%

Di-ethanolamine

Tri-ethanolamine

Titanium tetrachloride

Chlorinated Paraffin

Iso-Amyl Alcohol

Iso-Butanol

Cyclohexanol

n-Decanol

n-Hexanol

n-Heptanol

n-Ethyl Hexanol

n-Nonanol

n-Octanol

Iso-Octanol

Tert-Butanol

Dipentine

Pine Oil

Petroleum Ether

White Spirit

Turpentine

Paraffin Wax

Heptane

Di Iso Butyl Ketone

Vegetable & Animal Oils & Fats

Molasses

Wine

Whisky

Jet Fuel

Kerosene

Lard

Lubricating Oils

 
     
 

TECHNICAL DATA

 
     
 

Name/Description

Chemoguard # 888 Primer

Chemoguard # 999 Topcoat

Type

Two pack cold cured

Two pack cold cured

Composition

Epoxy Resin / Special Amine Curing Agent suitably pigmented.

Epoxy Resin / Special Amine Curing Agent suitably pigmented.

Colour

Red Oxide / Grey

Grey

Finish

Smooth and Glossy

Smooth and Glossy

Solids by Volume & Weight (mixed)

100%

100%

Mixing Ratio

Base : Hardener

2 : 1 by volume

Base : Hardener

2 : 1 by volume

Pot Life @ 30° C

3/4 to 1 hour

3/4 to 1 hour

Dry film thickness per coat

150 to 300 microns

150 to 300 microns

Coverage-(theoretical-no loss)

6.6 m² /litre at 150 micron

6.6 m² /litre at 150 micron

Serviceability @ 30° C

- Dry to touch

- Re-coat

- Full Cure

 

5 to 7 hours

At the tacky stage

7 days

 

5 to 7 hours

At the tacky stage

7 days

Dry heat resistance

120° C

120° C

Application Temperature

-minimum

-maximum

10° C

35° C

 

10° C

35° C

Relative Humidity

90%

90%

Flash Point

Above 80° C

Above 80°C

Solvent/Thinner

Anusol - ETP Thinner

Anusol - ETP Thinner

Resistance to boiling water @ 96° C for 6 hours

Unaffected

Unaffected

Resistance to corrosion under conditions of condensation @ 38° C for 1000 hours

No Failure

No Failure

Resistance to Salt Spray for 1000 hours

No Failure

No Failure

Packing

3 & 30 litres

3 & 30 litres

Shelf Life

6 months

6 months

 
     
 

Clean - Up :

 
 
Clean-up hands, tools, gloves etc. immediately with ANUSOL - ETP Epoxy Thinner.
 
     
  Caution :  
     
 
The job sites should be ventilated. The liquids may cause skin or eye irritation. Avoid direct contact with skin. Rub hands and face with a protective skin ointment. Before longer break periods and after completion of work, give the body careful washing. Rinse splashes from the eyes with plenty of water and borax solution. Wear protective clothing such as gloves, safety goggles and apron when mixing and applying Chemoguard. Keep away from reach of children and persons not trained in its use and not aware of the potential hazards involved. All components of this system are intended for use by professionals only.
 
     
 

Product Limitation :

 
     
 
Chemoguard coatings tend to change colour after few days if exposed to direct sunlight, certain gases and vapours and certain chemicals. It should be noted, however, chemical resistance and other properties of the coatings are not affected at all by discolouration.
 
     
 
Notes :-  
 
     
 
Brushes and spray equipments should be cleaned with Anusol - ETP Epoxy Thinner.
The contents should be stirred thoroughly prior to use.
When overcoating the weathered or aged Chemoguard, ensure that the coating is fully free from all contamination such as oil, dust, grease, stains etc. The coating should be made dull with kitchen knife etc.
 
     
 

Disclaimer :-

 

Information provided herein is based upon tests believed to be reliable. It does not guarantee the results to be obtained. Nor does it make any express and implied warranty or merchantability, or fitness for a particular purpose concerning the effects or results of such case. It does not release you from the obligation to test the products supplied by us as to their suitability for the intended uses. The application, surface preparation and use of the products are beyond our control and, therefore, entirely your own responsibility.

 
     
 
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