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Understanding hyperbranched polymerization mechanisms

from SPE Plastics Research Online

The polymerization of N,N'-bismaleimide-4,4'-diphenylmethane (BMI) with barbituric acid (BTA) produces hyperbranched polymer products exhibiting very high glass-transition temperatures and excellent heat resistance that have several useful applications. When epoxy resins are formulated with these BMI/BTA-based polymers, it is possible to achieve advanced adhesive compositions with excellent heat resistance without resorting to halogen-containing compounds. more


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