Thermosettable polymers or prepolymers prepared from...

Details Thermosettable polymers or prepolymers prepared from... Thermosettable polymers or prepolymers prepared from...

C - Chemistry, Metallurgy

08

G

402/33, 400/7033

C08G 16/02 (2006.01) C08J 5/24 (2006.01) C08L 61/00 (2006.01)

Patent

CA 1251885

ABSTRACT Thermosettable prepolymers or resins are prepared by reacting a pyrazine containing at least two substituent groups which have a hydrogen atom attached to a carbon atom which is attached to the ring with a material containing at least two aromatic aldehyde groups. These prepolymers or resins are curable to thermoset products having good mechanical and thermal properties. Thermoset polymers having good mechanical and thermal properties are also prepared by homopolymer- ization in the presence of N,N'-bis-imides or copolymer- ization of these prepolymers with N,N'-bis-imides. The prepolymers are suitable for preparing composites.

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