High Solids Coating System
Final rept. 5 Feb 1979-Feb 1980
DE SOTO INC DES PLAINES IL
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This contract research effort, a continuation of a previous Air Force supported contract F33615-77-C-5101, was directed toward the development of a 65 volume solids, sprayable airless electrostatic method, polyurethane exterior aircraft coasting meeting MIL-C-83286B performance specifications. A high solids coating can significantly reduce solvent emissions and help the Air Force meet EPAOSHA requirements for reduced environmental pollution and increased worker safety. One formulation, consisting of a combination of Acryloid AU-568 oxazolidine, NIAX PCP-0300 polyol, and Desmodur N-100 polyisocyanate was developed under the initial contract and found to exhibit performance properties closely approximating the program goals. During the present contract, this formulation was further evaluated. Attempts to upgrade the properties not meeting the performance specifications were made. Also, new commercially available resins were evaluated for incorporation into the high solids systems.
- Coatings, Colorants and Finishes