Flame-retardant high-temperature resistant shaped article...

Details Flame-retardant high-temperature resistant shaped article... Flame-retardant high-temperature resistant shaped article...

C - Chemistry, Metallurgy

08

G

18/1013, 402/221

C08G 73/10 (2006.01) B27N 3/12 (2006.01) B29C 43/00 (2006.01) B29C 67/24 (2006.01)

Patent

CA 2014004

ABSTRACT OF THE DISCLOSURE: There is disclosed a process for producing high- temperature resistant and flame-retardant shaped articles of polyimide polymers of the general formula Image (I) wherein A represents a four-valent group and R represents a divalent aromatic group, by heating a manipulatable sheet- like structure to a temperature in the glass transition range of between 280°C and 360° and pressing it at pressures ranging between 10 bar and 500 bar by using shaping means. The polyimide shaped bodies obtained have densities of at least 1.30 g/cm3. Preferably, they may be completed as sheets having uniform thicknesses of betwen 0.1 and 6 mm.

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