Synthesis and processing of model compound of PMR‐15 resin

Conreur, C.; Francillette, J.; Lauprêtre, F.

doi:10.1002/(sici)1099-0518(19970115)35:1<123::aid-pola13>3.3.co;2-m

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“…Formation of semiladder structures9 and introduction of a flexible segment in polypyrrolone backbones9–11 have been found to be effective approaches for improving the solubility and processability of polypyrrolones. A number of studies have attested that the PMR method ( in situ polymerization of monomer reactants) is an important method of obtaining heteroaromatic polymers with good solubility and processability 12–15. In particular, PMR‐type matrix resins of poly(benzimidazopyrrolone‐imide)16, 17 and pyrrolone–benzimidazole copolymer18 were successfully synthesized, both of which have shown superior processability and excellent thermal stability.…”

Section: Introductionmentioning

confidence: 99%

“…A number of studies have attested that the PMR method (in situ polymerization of monomer reactants) is an important method of obtaining heteroaromatic polymers with good solubility and processability. [12][13][14][15] In particular, PMR-type matrix resins of poly(benzimidazopyrrolone-imide) 16,17 and pyrrolone-benzimidazole copolymer 18 were successfully synthesized, both of which have shown superior processability and excellent thermal stability.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and properties of new polymerized monomer reactants matrix resins of pyrrolone–benzimidazole copolymers containing pyridine unit

Li¹,

Liu²,

Yang³

et al. 2004

J of Applied Polymer Sci

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A series of new polymerized monomer reactants (PMR) matrix resins of poly(pyrrolone-benzimidazole)s containing a pyridine unit (PPBP) were synthesized by polycondensation of monoethyl ester of cis-5-norbornene-endo-2,3-dicarboxylic acid, 2,6-diphenyl ester pyridinedicarboxylic acid or 3,5-diphenyl ester pyridinedicarboxylic acid, and diethyl ester of 4,4Ј-oxydiphthalic acid with 3,3Ј-diaminobenzidine in a mixing solution of anhydrous ethyl alcohol and N-methylpyrrolidone under given temperature and pressure conditions. The resulting resin solutions showed good solubility in polar organic solvents and stability at room temperature. The corresponding PPBP matrix resin, molded powder, and molded plate were prepared by undergoing amidation, imidization, cyclization, and crosslinking reactions when the reaction temperature was increased from 80 to 350°C, successively; the crosslinking structure was formed by the reverse Diels-Alder reaction at 270 -290°C under 50 MPa pressure (2.5-3.5 MPa displayed by the pressure meter). The chemical reactions and properties of the resulting PPBP were studied by means of FTIR, TGA, and DMA methods, and the results indicated that the kinds of PPBP materials retain excellent thermal stability and processability; when the initial decomposition temperature was above 620°C the T g was at 413.5°C for 3,5-PPBP-20 molded plate.

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