M NETTEK INTERNATIONAL INC.
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Marine & Industrial Rust Stopper / Primer
Rust Converter / Primer Consumer Market
Waterborne primer causes stir in shipping market
Active Rust Primer 662 SG ProfileActive Rust Primer 662 SG can change established ways of thinking! Some 3,000,000 square meters of ship's steel have been painted with waterborne Active Rust Primer 662 SG over the past 8 years with eye-opening results. A new type of polymer technology has emerged. |
 "Berge Stahl", 365,000 tdw bulk carrier, c/o Bergesen dy ASA, Oslo uses Active Rust Primer 662 SG in touch-up work in the ballast tanks |
Ballast tanks aboard "Ariel", 75,000 tdw, c/o C.H. Sørensen & Sønner AS. Prior to surface preparation. |
Ballast tanks 2 years later. Prepared by hydro jetting 1200 bar, 2 coats of Active Rust Primer 662 SG and 2 coats of modified epoxy. |
Harsh Environments
The following companies with over 300 ships have tested and subsequently become regular users of Active Rust Primer 662 SG: Bergesen dy ASA, Høegh Fleet Services AS., Frontline Ltd., V-Ships, Golar LNG, Barber Ship Management, Beltship, Red Band, Fred Olsen & Co., IUM Shipmanagement, JJ Ugland Companies, Solvang ASA, Kr. Gerh. Jebsen Skipsrederi AS, Westfal-Larsen Management AS and Seatrans ANS.
ARP 662 SG is used in ballast tanks, in various wet rooms, on demanding outside surfaces and other areas. More and more ships are incorporating our primer into their maintenance systems.
Wet Surfaces
Active Rust Primer 662 SG has proven its quality as an outstanding base coat within existing paint systems. New polymer technology has produced highly reactive binders which ensure good penetration and adhesion properties. The primer offers a remarkable combination of hardness and elasticity, but its two most important characteristics are that it works well in wet environments (the curing process effectively removes moisture from the steel) and that it reacts chemically with surface rust to render it inactive.
Enhanced Salt Tolerance
Paint coats can normally handle up to 20 mg of salt per square meter. Greater problems can occur when salt concentrations exceed this level. Tests show that even after hosing down with fresh water, concentrations significantly higher than this are common on rough surfaces. When a highly fluid water-based primer penetrates surface cavities, it is presumed that water-soluble salts are reduced and rust formation is inhibited. Test panels where moisture and salts were applied and then placed in a condensation chamber display obvious differences with and without primer in the system.
More Experiences The first coatings applied to water ballast tanks were done on the Bergesen d.y. ships Havmann and Havprins (formerly Havtor) in 1994. These tanks had presented problems on these ships, thus superintendent Tore Thomassen was willing to try Active Rust Primer 662 SG as the primer coat under two coats of epoxy (International Paint). The ballast tanks on the Havprins were first cleaned to St2 - SA1.0 specifications. After coating, they were inspected regularly, with the last inspection taking place at the beginning of summer when the ship went into drydock. The shipping company finds that the results continue to be excellent. They started using our water-based primer on other ships in 1994 and 1995, and it is now used regularly in their maintenance operations. Today, 40 Bergesen dy. ships use Active Rust Primer 662 SG. |
 Høegh Gandria (LNG carrier) c/o Leif Høegh Co, Oslo: no more sandblasting with Active Rust Primer 662 SG aboard. |
 The Prinsesse Ragnhild (ferry Oslo - Kiel) c/o Color Line, Oslo. The main truck deck was coated with Active Rust Primer 662 SG in autumn of 1996, with no top coat. Our primer's combination of hardness and elasticity has proven ideal for this vessel. |
Deck Surfaces
Aboard the Høegh Gandria, no sandblasting has taken place since March 1995, when Active Rust Primer 662 SG was first brought aboard. Deck surfaces were hydro jetted at 700-800 bar and the surfaces sealed with one or two thin coats of our primer prior to painting. According to the ship's officers, the results were just as good as those previously obtained.
Environmental Benefits
Many other cases can be cited. This new generation of water based products meets industry standards of water resistance and protection is now visible. In addition to the outstanding quality of the product, it also offers substantial environmental benefits. Active Rust Primer 662 SG is harmless at low VOC levels (66 g/liter) and very easy to use.
Simple preparation
Thorough surface preparation before application is essential for our primer to be most effective.
Loose rust and scale must be removed, and it is important to spray the surface with fresh water before applying the primer to remove loose particles and salt. On sound, brown steel surfaces (moist or dry), the primer has an important function. The primer film "upgrades" the steel before the paint system is applied. After surface preparation, the first coat of primer secures the surface, and the rest of the paint job may then be planned in more detail. When working outdoors, once the primer coat has been applied, the rest of the job may be performed as weather permits. Active Rust Primer 662 SG is often used as the first coat after hydro jetting. It works just as well on clean steel, and it is not dependent on surface profiles for adhesion. Pull-off tests conducted on untreated steel using the P.A.T. hydraulic system showed averages of 14.1 MPa (approx. 140 kp/cm2).
Other Application Areas
APR Rust Primer 662 SG can be applied to many different surfaces, on welds, bare steel, stainless steel, galvanized steel and aluminum. Examples for areas of applications are industrial uses, boats, cars, airplanes, outdoor furniture and more.