Research will be conducted on designing and developing innovative methods for producing powders of polyimide sulfone polyamic acids as well as the polyimide sulfone. These materials are becoming well known in the scientific and industrial communities for their array of outstanding properties, including thermoplasticity. However, to fully exploit these properties, the materials must be available informs which allow diverse processing options. One form which allows the many options is powder form. While several polyimides, such as larc-tpi powder, are available and being evaluated extensively, polyimide sulfone powder with particle sizes of 10-20 micron is not available. Several major aerospace companies and nasa materials organizations are keenly interested in evaluating these powders in composite and adhesives applications. HTS, Inc. Proposes to develop production techniques and supply developmental quantities to appropriate firms.