MIL-PRF-85285E
3. REQUIREMENTS
3.1 Qualification. The coatings furnished under this specification shall be products that are
authorized by the qualifying activity for listing on the applicable qualified products list (QPL) in
the qualified products database (QPD) before contract award (see 4.3 and 6.5).
3.2 Materials. Materials used to manufacture these coatings are not limited, provided that
the resulting coatings meet the requirements of this specification.
3.3 Toxicity. The coatings shall have no adverse effect on the health of personnel when
used for its intended purpose and with the precautions listed in 3.10.1 through 3.10.3, when
evaluated in accordance with 4.6.15 (see 6.3).
3.4 Composition. The polyurethane coating furnished under this specification shall be in
the form of a kit consisting of component A, containing the pigmented polyester resins and
solvents, component B, containing the clear, aliphatic isocyanate resins (see 6.3) and solvents,
and optional component C containing organic solvents for class H. Component B shall act as the
hardener or curing agent for component A. The volume mixing ratio shall be as specified by the
manufacturer. The coating kit shall be supplied such that the admixed coating consists of the
minimum volume specified by the procuring activity (see 6.2). When tested in accordance with
4.6, no component of the coating shall contain cadmium, cadmium compounds, or more than
0.05 percent by weight of lead metal or lead compounds, and the coating shall not contain
hexavalent chromium.
3.4.1 Solvent content. All solvents necessary for thinning purposes shall be supplied as
part of the coating kit, with the exception of Class W. The resistivity of the solvents shall permit
application of class H coatings by electrostatic spray methods. When tested in accordance with
4.6, the maximum VOC content shall be 420 grams per liter (g/l) for types I and IV coatings,
340 g/l for type II coatings, and 50 g/l for type III coatings. Solvents used for class H shall be
urethane grade and contain a minimum of water and alcohol (see 6.4). Class H coatings shall be
compatible with thinner conforming to MIL-T-81772, type I. Brominated and
chlorinated solvents, except for para-chlorotrifluoromethylbenzene or equal, shall be prohibited
in the formulation of this product.
3.4.2 Volatile organic hazardous air pollutants (VOHAPs). When tested in accordance with
section 4.6, the VOHAP shall not exceed the limits for the individual finishes listed in table I.
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