Aromatic bismaleimides and prepreg resins therefrom

C - Chemistry – Metallurgy – 07 – D

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C07D 207/452 (2006.01) C08F 26/06 (2006.01) C08F 283/00 (2006.01) C08G 59/40 (2006.01) C08G 59/44 (2006.01) C08G 59/56 (2006.01) C08J 5/24 (2006.01)

Patent

CA 1281723

AROMATIC BISMALEIMIDES AND PREPREG RESINS THEREFROM ABSTRACT OF THE DISCLOSURE Described herein are novel bismaleimides and prepregable resin compositons comprising these bismaleimides and one or more liquid coreactants and optionally, one or more other additives. The novel bismaleimides, such as alpha, alpha-bis-(4-maleimido- phenyl)-mets-diisopropylbenzene, are characterized by the presence of three aromatic rings in the molecular structure and in some respects optimize the desirable characteristics of the one or two and four atomatic ring-containing bismaleimides in resins prepared therefrom. In particular, this invention is directed to novel aromatic bismaleimides of formula (II), Image II and prepreg resins prepared therefrom. The novel bismalemides are those wherein Ar represents a single or fused aromatic nucleus, preferably a hydrocarbon aromatic nucleus of up to 10 carbon atoms, which may optionally contain one or more R or R1 substitutents. R and R1 individually represent alkyl or halogen groups, and R2 represents alkyl groups of from 1-12 carbon atoms and n has a value of from 0 to 4.

515251

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