2-29. TURPENTINE. GUM SPIRITS (TT-T-801)
This is a clear, volatile liquid obtained by distillation of the gum (oleoresin) of living pine trees. It is a good solvent for
many resins and is the preferred thinner for oil paints and varnishes with a linseed oil vehicle. Its evaporation rate is
relatively slow. Do not use to thin lacquer.
Section VI. TOPCOAT OR FINISH COAT
2-31. CHEMICAL AGENT RESISTANT COATINGS (CARC)
General. Chemical Agents pose a devastating threat to sustained readiness in a combat environment. CARC
paints were developed to minimize the impact of this threat. CARC paints are relatively impermeable coatings which do
not absorb/desorb chemical agents, and which do not break down when decontaminated.
A common misconception is that CARC paints present greater health/safety/environmental hazards than do
other paints. In fact, the health and safety requirements for CARC are the same as those for all paints. And, although
CARC paints are currently more expensive and require additional care in application, their durability make overall life cycle
costs/efforts less than those of other paint systems.
There are currently three CARC paints:
MIL-C-46168 a two-component aliphatic polyurethane used on exterior surfaces and those interior
surfaces frequently exposed (eg, ramps, hatches).
MIL-C-53039 a single component aliphatic polyurethane used wherever MIL-C-46168 may be used.
MIL-C-22750 a two-component epoxy polyamide enamel used only on interior surfaces.
Coating, Aliphatic Polyurethane, Chemical Agent Resistant (MIL-C-46168) Two-Component.
Characteristics. This specification covers both camouflage and non-camouflage color chemical agent
resistant aliphatic polyurethane coatings (CARC). CARC is designed for easy decontamination after liquid chemical agent
exposure. It is available in a standard formula (Type II), and a high-solids VOC compliant formula (TYPE IV). Types II
and IV are all lead and chromate free.
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