PTI SPECIALTY PAINT<br>POLYURETHANE from Aircraft Spruce

Physical Properties
Toxicity: PTI Polyurethane contains no substance of known toxicity under normal conditions of usage. Colors: The Polyurethane is available in clear, white, blacks, grays and most Federal Standard number 595B (FS#) colors or glosses. Custom colors are available upon request. Viscosity: Admixed and reduced (17925) 15 seconds with #4 Ford Cup. Solids: Nonvolatile admixed & reduced (17925) 65% by weight. Weight: Weight per gallon-admxed and reduced (17925) 10.2 lbs./gal. Hardness: Pencil Hardness (17925) 514. Flexibility: 1/4" Mandrel - Passes. Salt Spray: Saturated Salt Spray 1,000 hours minimum.

Resistance Properties
Salt Spray per ASTM B117 (corrosion) 1000+ hours. Humidity (Filiform) 1000+ hours. Lubricating Oil conforms to MIL-L-23699: 24 hrs. at 250° F. Hydraulic Fluid conforms to MIL-H-5606/MIL-H-83282 24 hrs at 150° F. JP-5 Jet Fuel conforms to MIL-T-5625 7 days at room temperature. Skydrol 500B conforms to MIL-C-83286B 7 days at room temperature. Results: All pass with no blistering, softening, or other coating defects.

Chemical Properties
Chemical Resistance: Methyl Ethyl Ketone soaked cloth 100+ rubs-Passes. DS2 (1,5-Dichloropentane-Passes. The following chemicals were tested at 1 drop per day for five days: Phosphoric Acid (10%)-Passes. Isopropanol (99%)-Passes. Acetone-Passes. Ethanol (99%)-Passes. Triton X-100-Passes.

Application
Cleaning-All materials to be coated must be chemically or mechanically cleaned using a recognized cleaning method. Use of Primer PTI recommends PTI Epoxy Primer MIL-P-23377G (High Strontium prime-all primer) as a part of the application of this coating system to assure unsurpassed corrosion protection and maximum adhesion. An acid etch pretreatment wash primer should be used prior to applying. Mixing-Stir component "A" and component "B" by volume. Reduce with PT-1003, Type 1 MIL-T-81772B-Type 1 thinner to stay within the required 420 g/1 VOC's Do not add more than 10% by volume of the reducer. Do not mix more than can be used within a four hour period. Do not combine this material with that of another manufacturer. Method of Application: The Polyurethane may be applied by conventional spraying, brushing, or rolling. For best results PTI recommends spraying using an HVLP (high pressure low volume) system. Spraying should be accomplished in a suitable area having adequate ventilation and clean filtered air. A N.I.O.S.H. approved respirator should always be worn when spraying this material. See MSDS before using this material. To avoid contamination, no other materials should be sprayed in the immediate area at the same time.

Curing
Air Cure-Set to Touch: 4 hrs. maximum Dry Hard: 8 hrs. maximum. Full Chemical Cure: 7 days minimum. Force Cure: Dry Hard: 15 minutes air, then 2 hrs. at 225° F. Full Cure-(After Dry Hard) 2 hrs. at 225° F.

PT-1003 Type I
is a reducer specially formulated to compliment the PTI Polyurethane.