Methods of preparing polyimides and artifacts composed thereof

Details Methods of preparing polyimides and artifacts composed thereof Methods of preparing polyimides and artifacts composed thereof

1980-09-12

1981-12-15

Foelak, Morton

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415911, 521185, 521915, 528353, C08G 1814, C08G 6340

Patent

active

043057969

ABSTRACT:
Methods of converting essentially unpolymerized precursors into polyimides in which the precursors are exposed to microwave radiation. Preheating, thermal post-curing, and other techniques may be employed to promote the development of optimum properties; and reinforcements can be employed to impart strength and rigidity to the final product. Also disclosed are processes for making various composite artifacts in which non-polymeric precursors are converted to polyimides by using the techniques described above.

REFERENCES:
patent: 3471444 (1969-10-01), Sherer
patent: 3677921 (1972-07-01), Stivers
patent: 3803103 (1974-04-01), Magay
patent: 4166168 (1979-08-01), D'Alelio

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