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- W2023168424 abstract "Abstract The reaction of dichloromalcimides with aromatic amines was applied to the preparation of phosphorus-containing polymers, so-called polymaleimide-amines. The phosphorus-containing polymalcimide-amines were synthesized from N,N′-bisdichloromaleimido-3,3′-diphenylalkylphosphine oxides and aromatic diamines or piperazine. Some properties of the resulting polymers, such as solubility and thermal behaviour, were investigated. Most of the polymers were obtained at yields of 80% or above. The reduced viscosities of the polymers, measured at a concentration of 0.2 g/dl in DMA at 30, were 0.13–0.27 dl/g. Some of the polymers, especially those prepared from piperazine, were freely soluble in DMF, DMA, DMSO, cone H2SO4, formic acid etc., but all the polymers seemed to decompose in cone H2SO4 or formic acid. The phosphorus-containing polymaleimide-amines had poor thermal stability and little flame retardance." @default.
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- W2023168424 date "1980-01-01" @default.
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- W2023168424 title "Preparation of phosphorus-containing polymers-xxi" @default.
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- W2023168424 doi "https://doi.org/10.1016/0014-3057(80)90138-x" @default.
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