Foaming and curing polyimide resins by application of microwave

Details Foaming and curing polyimide resins by application of microwave Foaming and curing polyimide resins by application of microwave

1985-11-19

1986-07-08

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521180, 521183, 521184, 521185, 521189, 528184, 528322, 528323, 528328, C08J 922, C08J 924

Patent

active

045993653

ABSTRACT:
Methods of foaming and fully curing polyimide resins entirely by the application of microwave energy. Foamable polyimide resins may be prepared by esterifying a suitable dianhydride, reacting the product with a suitable diamine, drying the resulting product and heating to spontaneously form a foam. In the past, such materials could be foamed but could not be satisfactorily cured to a resilient foam entirely by microwave energy. Post-foaming direct application of thermal energy was required to produce a satisfactory foam. We have found that adding a suitable oxoimine, such as caprolactam, to the reaction mixture results in a foam material which is fully and completely cured entirely by the application of microwave energy, considerably simplifying the process and reducing costs.

REFERENCES:
patent: Re31756 (1984-12-01), Gagliani et al.

Affiliated with

Also associated with

Rating

Foaming and curing polyimide resins by application of microwave does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foaming and curing polyimide resins by application of microwave , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foaming and curing polyimide resins by application of microwave will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1451454