Bismaleimides such as Homide 121, 122, 123 and 125 contain a benzene ring as well as imide groups and have a high cross-linking density, so that the cured products made from them have excellent heat resistance up to 300°C. Such products are used as curing agents or cross-linking agents in vulcanization reactions, e.g. for rubber, to achieve better adhesion, higher temperature resistance and an extremely high cross-linking density.
To improve flexibility, thermal decomposition temperature and solubility in organic solvents such as acetone, methyl ethyl ketone, etc. instead of polar toxic solvents (N-methylpyrrolidone, dimethylformamide), we have developed aliphatic bismaleimides such as Homide 116 and bismaleimides with aliphatic methyl groups such as Homide 113 and 117.