Synthesis and Characterization of Poly(Maleimide-Ethers) from the Reaction of Bisdichloromaleimides with 4,4′-(Hexafluoroisopropylidene)diphenol

Sava, M.; Chiriac, C. I.; Găină, Constantin; Stoleriu, A.; Gaina, Viorica

doi:10.1080/10601329708014998

Cited by 11 publications

(7 citation statements)

References 9 publications

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“…The N,N ′dicyclohexylcarbodiimide (DCC) (Fluka) reagent was used as received. BMI (with the structure presented in Scheme ) was prepared as described elsewhere9 (mp 155–158°C).…”

Section: Methodsmentioning

confidence: 99%

Polymaleamide–polymaleimide networks

Ivanov¹,

Găină²,

Grigoraş³

2003

J of Applied Polymer Sci

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Polymaleamide-polymaleimide networks were obtained as films by the thermal treatment of mixtures with different ratios of an aliphatic-aromatic polymaleamide (PMA) and 4,4Ј-bis(maleimidodiphenylmethane) (BMI), in N-methyl-2-pyrolidinone (NMP) as a solvent. The polymaleamides were synthesized by ring-opening polyaddition of 1,6-hexamethylene-bisisomaleimide with 4,4Ј-diaminodiphenylmethane in NMP at room temperature. The networks are infusible and insoluble in organic solvents; therefore, they were studied by solid-state techniques such as IR, DSC, thermooptical analysis (TOA), TG/DTG analysis, and TEM. Thermal treatment of pure PMA and BMI occurs with the formation of crosslinked structures as proved by IR spectra. DSC and TOA curves show the appearance of chemical interactions between PMA and BMI in cured films and the formation of ordered morphologies, especially when BMI is the major component. TG/DTG and TEM results supported these observations. The PMA-polymaleimide network films present electrical insulator properties superior to individual polyamides or polyimides.

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“…The N,N ′dicyclohexylcarbodiimide (DCC) (Fluka) reagent was used as received. BMI (with the structure presented in Scheme ) was prepared as described elsewhere9 (mp 155–158°C).…”

Section: Methodsmentioning

confidence: 99%

Polymaleamide–polymaleimide networks

Ivanov¹,

Găină²,

Grigoraş³

2003

J of Applied Polymer Sci

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“…The bismaleimide monomers 1(a-c) were prepared from diamines and maleic anhydride according to Searle method [20]. o,o'-Diallylbisphenol A (DABPA) and 2-((2-allyl-4-(2-(3-allyl-4-(oxiran-2-ylmethoxy)phenyl)propan-2-yl)phenoxy)methyl) oxirane (3) were prepared starting from bisphenol A according to the procedure reported in our previous communications [17,21].…”

Section: Reagents and Materialsmentioning

confidence: 99%

High performance bismaleimide resins modified by novel allyl compounds based on polytriazoles

et al. 2012

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New poly(1,2,3-triazole)s functionalized with allyl groups were prepared by the 1,3-cycloaddition reaction (click reaction) of azido-imides to bispropargyl monomers containing allyl groups. The copolymers of 4,4'-bismaleimidodiphenylmethane with allylated polytriazoles were prepared and their properties investigated. Modified bismaleimide resins had excellent processing compared with neat bismaleimides, especially improved olubility and faster thermal polymerization rate. In addition, the new cured systems had good thermal and dielectric properties (dielectric constant at 1 kHz ranged between 3.09 and 3.39, except the polymer with aliphatic segment instead of the imide group that had a higher constant, namely 4.6).

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“…The aromatic bismaleimides (1) used in the reaction were prepared from aromatic diamines (1 mol) and maleic anhydride (2 mol) in dry acetone at reflux temperature under a nitrogen atmosphere according to a method described in the literature [6,7] (scheme 1). Intermediate bismaleamic acid was in situ cyclodehydratated with acetic anhydride and triethylamine using magnesium acetate as catalyst.…”

Section: Synthesis Of the Bismaleimide (1)mentioning

confidence: 99%