Heat-resistant prepreg and method for production thereof

Details Heat-resistant prepreg and method for production thereof Heat-resistant prepreg and method for production thereof

C - Chemistry, Metallurgy

08

J

117/187

C08J 5/24 (2006.01) C08L 83/04 (2006.01) C08L 83/14 (2006.01) C08L 101/00 (2006.01) H01B 17/60 (2006.01)

Patent

CA 1291378

Abstract of the Disclosure A heat-resistant prepreg uses at a substrate a heat- resistant material made of heat-resistant organic fibers, inorganic fibers, etc. and as a matrix a heat-resistant mixture containing at least 10% by weight of a borosiloxane resin composition. This heat-resistant prepreg is obtained by impregnating the substrate at a temperature in the range of 200 to 300°C to such an extent that at least 20% of the amount of phenyl groups bonded to silicon atoms in the aforementioned borosiloxane resin composition prior to the impregnating and drying steps will remain after the heat treatment.

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