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

1981-05-11

1984-03-27

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

20415911, 20415919, 264 453, 264 54, 264338, 264DIG5, 521 54, 521122, 521185, 521189, 521915, 523219, 524592, 524877, B29H 526

Patent

active

044393814

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: 4305796 (1981-12-01), Gagliani et al.
patent: 4361453 (1982-11-01), Gagliani et al.

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