Effects of Catalysts on the Reactions of N-Phenylmaleimide/Allyl Compound Systems

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Other Title
  • N-フェニルマレイミドとアリル化合物との反応に及ぼす触媒の影響

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A detailed investigation on the effect of catalysts on the curing reaction of allyl modified maleimide resins was conducted using model reactions.<BR>Sellecting N-phenylmaleimide (PMI), ο-allylphenol (AP), allylphenylether (APE) and allylbenzoate (AB) as model compounds, the reactions of PMI/AP, PMI/APE and PMI/AB systems were investigated.<BR>Without catalyst, products were 1 : 1 and 3 : 1 adducts of PMI to AP (PMI-AP, (PMI) 3-AP) in the PMI/AP system. Polymerization occurred in the PMI/APE and PMI/AB systems.<BR>Using a radical catalyst (dicumyl peroxide), both PMI-AP, (PMI) 3-AP and polymer were produced in the PMI/AP system. Polymerization occurred in the PMI/APE and PMI/AB systems as the same in those without catalyst.<BR>Using an anionic catalyst such as 2-ethyl-4-methyl-imidazole, or triphenyl phosphine, the product was PMI oligomers in the all systems and allyl compounds reacted little.<BR>From these results, the effect of catalysts on the functionalities of maleimide and allyl groups was considered.

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