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POR-15® PRODUCT DESCRIPTION
POR-15 Inc. brings the powerful technology of polymeric isocyanate derivatives to the consumer rust prevention market for the first time, a technology vastly superior to competing products currently on the market.
POR-15 is easier and less expensive to apply than epoxies, since it doesn't require mixing: and POR-15 dries to a high-gloss or semi-gloss finish just like paint, except that it cannot be scratched or peeled off.
Since POR-15 chemically bonds to metal, the underlying surface does not have to be sanded before application. As long as loose or flaking rust are removed from the surface, an application of POR-15 will not only cover up the rust and prevent it from spreading, but will also strengthen the underlying metal and seal holes by forming its own membranes.
POR-15 is a rust-preventive paint designed for application directly on rusted or seasoned metal surfaces. It dries to a rock-hard, non-porous finish that won't chip, crack, or peel, and it prevents rust from re-occurring by protecting metal from further exposure to moisture. POR-15 is sensitive to UV light (sun) and must be top coated before prolonged exposure to sunlight. POR-15 is cured and strengthened by exposure to moisture and will dry faster under extreme humidity, but moderate to dry atmospheric conditions are most desirable when applying this product, because extreme humidity may cause an immediate surface cure, trapping carbon dioxide gas below the surface. When this happens, bubbling may occur. Extreme humidity at the time of application may also interfere with proper adhesion of the POR-15 coating to metal because it's almost impossible to keep metal dry under such conditions.
POR-15 is a
paint-like substance which acts as a total rust inhibitor and also
very effective as a metal filler. Its consistency is
approximately that of paint and it has very good
spreadability (one quart covers 96 square feet).
POR-15® chemically bonds to rusted steel
to form a rock-hard, nonporous coating that won't crack, chip, or
peel. It works by isolating metal from moisture; without
moisture present, steel can't rust. Thin, covering
coats are best. Apply second coat when first coat is dry
to touch with slight "finger-drag" remaining.
Solids - 74%
Glossy or Semi-gloss (black only) finish.
POR-15 APPLICATION PROCEDURES
Rusted surfaces are best; seasoned metal and sandblasted surfaces are also good.
To coat smooth metal surfaces:
STIR CONTENTS GENTLY AND THOROUGHLY before painting.
Apply in thin coats, 1 to 2 mil thickness. Minimum 2 coats.
TO TOPCOAT A FULLY CURED POR-15 SURFACE:
Use POR-15 Solvent or lacquer thinner for cleanup, which must be done before POR-15 dries. NOTE: Organic vapor particulate respirators, NIOSH/MSHA approved, must be used when spraying POR-15.
Moisture will shorten the life of unused POR-15. Seal can or jar immediately after using. We recommend placing plastic wrap between lid can and storing in a cool dark place.
APPLICATION OF POR-15 TO NEW METAL
For proper adhesion to aluminum, galvanized metal, and smooth steel surfaces, prep with POR-15® Prep & Ready Rust Remover/PrePrimer. Keep surface wet for 15 minutes, then rinse off with water and dry thoroughly. This process will leave a zinc phosphate coating on the metal and insure perfect adhesion.
WHICH FORMULA TO USE?
ADVANTAGES OVER MOST DUAL-COMPONENT COATINGS
Better chemical resistance, better adhesion to metals, greater ease of application, strengthened by exposure to moisture. Reasonable pot life, non-shattering, great flexibility. No catalyst required for curing.
LABORATORY TEST RESULTS
POR-15® was tested for 168 hours at 97°F in a condensing humidity salt spray (ASTM B117). At the end of the test period, coated steel was free of rust or pitting. Acid and alkali resistance tests performed found panels coated with POR-15® to be impervious to gasoline, oil, chromic acid, hydrochloric acid, phosphoric acid, sodium hydroxide, caustic soda, 50% sulfuric acid, and 50% hydrofluoric acid. POR-15® was applied over a rusty substrate as a finish coat (approximately 23 mils dry film thickness). The coating showed essentially no undercutting at the scribed area after 2000 hours in a weatherometer*.
A 2 mil thickness of POR-15® was applied to lightly rusted steel and then exposed for 1000 hours to a salt spray. At the end of the test period, no undercutting was observed at the scribed area. Recoatability is excellent. Laboratory tests have shown very good adhesion when applied up to 14 days after application of the first coat. In an actual Field test, a topcoat was applied 6 weeks after the first coat had been applied, and the intercoat adhesion was excellent as determined by a crosshatch tape test. A metal box used as a filter for raw sewage was coated with POR-15® and placed in service within a few hours after the interior and exterior were coated. No visible rusting occurred at the welded areas after a six month exposure.
A POR-15® coating was subjected to 700°F for 10 hours; it remained hard and showed no apparent loss of adhesion. A panel subjected to elongation was pulled beyond the yield point of the base metal without affecting the POR-15® coating.
* WEATHEROMETER -
MANY PRODUCTS CLAIM TO STOP RUST; SOME ARE PAINTS, SOME ARE CONVERSION PRODUCTS, SOME ARE RUST TREATMENTS. NONE SEEM TO REALLY STOP RUST PERMANENTLY. WHY IS POR-15 DIFFERENT, AND WHY SHOULD I BELIEVE IT WILL WORK ANY BETTER?
Rust is caused by moisture coming in contact with metal, which causes a chemical action called oxidation. All paints provide a measure of protection for a while, but since they are eventually softened and weakened by moisture, it is only a matter of time before moisture penetrates the painted surface and attacks the metal below. All of the so-called rust preventive paints on the market (except POR-15) are weakened by exposure to moisture. POR-15 is strengthened by exposure to moisture. Notice the hardness of the POR-15 coating. It doesn't chip, crack, or peel like ordinary paints do, and its hardness will resist the wear and tear of every day life.
Rust conversion products claim to change the chemical nature of rust and convert it to a more stable element that won't rust again. History of the failure of these products is well documented; most simply don't work for more than a few months at best, and they are subject to the same chipping and cracking that occurs with ordinary rust coatings.
POR-15 works because it chemically bonds to rusted metal and forms a rock- hard, non-porous coating that won't crack, chip, or peel. It keeps moisture away from metal with a coating that is strengthened by continued exposure to moisture.
APPLYING POR-15 TO SEASONED OR RUSTED METAL: First, wire brush loose rust and scale. Then remove any grease or oil with POR-15 MARINE=CLEAN and prep with POR-15 Prep & Ready. DO NOT USE SOLVENT- BASED CLEANERS.
CHROME MOULDING CLIPS can scratch a new paint job when they are pushed through the body. POR-15, even if scratched off, will only rust where it's removed, so rust won't travel upward to ruin that new paint job. Coat around holes and under chrome before you prime and paint.
ROOF DRIP RAILS are a place where rust begins early. Put on a coat of POR-15 and let dry. Then apply a second coat, wait for it to dry, then apply a coat of POR-15 Tie-Coat Primer and topcoat as desired.
STAINLESS STEEL TRIM PIECES that push down around the windshield... if they won't stay down, put some POR-15 in the channel and brace it with wood strips overnight. Regarding windshields, with the rubber removed, put a coat of POR-15 around the body where the rubber rests; this is a high humidity area and should be sealed with POR-15. POR-15 INSIDE REAR EXHAUSTS will stop rust where it starts.
RUSTED OUT PINHOLES: Put a piece of tape behind the larger pinholes, then paint. When the paint dries, pull the tape off and paint the back side as well. POR-15 can be used to seal gas tanks, also, and POR-15 PUTTY will take care of larger holes.
Reminder: POR-15 SHOULD BE STIRRED, not shaken, each time you use it.