Porous articles from powder blends of polyimides and...

Details Porous articles from powder blends of polyimides and... Porous articles from powder blends of polyimides and...

C - Chemistry, Metallurgy

08

L

18/30, 400/5480

C08L 79/08 (2006.01) C08J 9/24 (2006.01) C08L 59/02 (2006.01)

Patent

CA 1071346

ABSTRACT A composition of a coalescible polyimide powder and a polymer of formaldehyde is provided, said composition adapted for fabraicating porous polyimide shaped articles by subjecting said composition to a forming pressure of about 100,000 psi to provide a preform, and thereafter sintering said preform by heating said preform to a temperature above about 300°C. to provide a porous polyimide shaped article having interconnecting pores; said porous polyimide shaped articles being useful as, for example, oil-impregnated bearings. - 1 -

218610

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