A hard drying anticorrosive primer based on selected anti corrosive pigment – red oxide and zinc chrome blended with special alkyd medium. Iron oxide (red oxide) by itself has good corrosion resistance. But, where better resistance is needed, a combination of iron oxide and zinc chrome is used while preparing the primer.
The minimum quantity of zinc chrome needed is 14% (as per IS-2074) of the total pigment. Every film of primer accepts moisture from the air, which in turn is the main cause of rusting. Zinc chrome pigment (under moist conditions) dissociates itself into zinc and chromic acid. The latter offers what is called passivation thereby taking much longer time to start rust.
FINISH/MATT: Highly Durability
Aroprim Primer is Iron Oxide Primer & it works as a good alkali resistant undercoat and filter. It can be used to cover minor surface imperfections.
Technical Specification :
| APPLICATION : |
Air Spray, Brush |
| VOLUME SOLIDS : |
38% |
| RECOMMENDED DFT |
25 microns |
| CORRESPONDING WFT : |
75 microns |
| THEORETICAL SPREADING RATE AT ABOVE DFT : |
9-10 M2 / Ltr. |
| SURFACE DRY : |
15-20 min |
| TOUCH DRY: |
35-40 min |
| HARD DRY : |
Overnight |
| COLOUR : |
Red Oxide |
| FINISH : |
Matt |
| OVERCOAT INTERVAL : |
Min. 16 hrs. Max. None |
| SPECIFIC GRAVITY: |
1.3 |
| FLASH POINT : |
Above 300 C |
| THINNER : |
Soluble |
| SHELF LIFE : |
12 months |
| % of Zinc Chrome |
Depending on requirement |
TYPICAL USE
It is suitable for steel and light alloys in both industrial and marine atmosphere. Recommended for normal industrial atmosphere, it is compatible with a wide range of top coats like enamel, bitumen, aluminium paint etc.
STEEL SURFACES:
Degrease and blast clean to Sa 2 ½ grade minimum of Swedish specification SIS - 05 -5900 - 1967. If blast cleaning is not practical make full use of mechanical tools along with manual cleaning and wire brushing to remove loose rust.
MAINTENANCE :
Remove oil and grease with a detergent solution and high pressure fresh water hosing. Galvanized steel may require light blasting with a fine abrasive depending on the condition of the surface and the degree of contamination.
HEALTH & SAFETY :
As a general rule, avoid inhalation of solvent vapours or paint mist and contact of paint with skin and eyes. Provide forced ventilation when working with solvent borne coating in confined spaces or stagnant air. Also provide respiratory, skin and eye protection. Also follow local and national safety regulations.