Marine-Paint.com - POR-15 POR Patch

User Guide - POR Patch Seam Sealer/Filler

POR Patch is a thick, pudding-like substance which acts as a total rust inhibitor and is also very effective as a metal filler. POR Patch can be easily brushed, or troweled. It chemically bonds to rusted steel to form a rock-hard, non-porous coating that won't crack, chip, or peel. Because it is actually POR-15 in a thickened state, it works by isolating metal from moisture; without moisture present, steel can't rust. POR Patch is easier and less expensive to apply than epoxies because it doesn't require mixing. Since POR Patch actually bonds chemically to metal, the underlying surface does not have to be sanded before application. As long as loose or flaking rust is removed from the surface, an application of POR Patch will not only cover up the rust and prevent it from spreading, but will strengthen the underlying metal and seal holes by forming its own membranes.

APPLICATION OF POR-15 TO NEW METAL
For proper adhesion to aluminum, galvanized metal, and smooth steel surfaces, prep first with POR-15 METAL-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.

PRODUCT CHARACTERISTICS

Solids:	78%
Vapor Pressure:	38mm Hg
Boiling Point:	NA
Specific Gravity:	1.05
Percent volatile by volume:	22%
Weight per quart:	2.6 lbs
Weight per tube:	4.6oz
Solubility in water:	insoluble
Appearance:	Semi-Gloss black finish.
Application:	Brush, roller, trowel
Spreadability:	Depending on thickness applied
Recommended Temperature Application:	45°F - 95°F.
Drying Time:	Varies according to humidity; average is 5 - 8 hours.
Shelf Life:	Unopened can or tube - 2 years or more. Opened can-up to 6 months.
Solubility:	POR Patch is readily soluble in esters, ketones, and aromatic solvents.

LABORATORY TEST RESULTS
POR Patch 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 test performed found panels coated with POR Patch to be impervious to gasoline, oil, chromic acid, hydrochloric acid, phosphoric acid, sodium hydroxide, caustic soda, 50% sulfuric acid, 50% hydrofluoric acid. POR Patch was applied over a rusty substrate as a finish coat (approximately 2-3 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 Patch 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.

^*WEATHEROMETER -
Dew cycle XWR with corex D filter, cycle is:
1. 30 minutes sun, 135°F, 30% relative humidity.
2. 30 minutes dark. 75-80°F, 100% relative humidity
(achieved with water spray on panel backs).

Laboratory tests have shown very good adhesion when applied up to 14 hours after application of the first coat. In an actual field test, a topcoat was applied 2 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 Patch 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 Patch coating was subjected to 500°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 Patch coating.

TYPICAL APPLICATIONS
Use as a primer or finish coat. Automobiles: fenders, floorboards, bumpers, trunk areas, engine compartments, rockers. Trucks, trailers, storage tanks, agricultural equipment, snow removal and highway equipment, factory machinery, bridges, boats, all types of marine use. Outdoor sign supports, fencing, metal roofs, fire escapes. Use to waterproof insulation or wood. As a filler for metal. Use as a bonding agent on wood or styrofoam. Prevents rust in refrigeration units where moisture corrodes metal.

ADVANTAGES OF POR Patch OVER MOST
DUAL-COMPONENT COATINGS OR SEALERS
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.

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Advanced Rust Protection
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965 S. Main St., Great Barrington, MA 01230
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