Rapid Synthesis of Polyimides from Nylon-Salt-Type Monomers

Imai, Yoshio

doi:10.1007/3-540-49815-x_1

Cited by 24 publications

(14 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, we conclude that the conversion of MS6 to PP6 must mainly take place in the solid state, while dissolution or melting do not seem to occur. It is well known for various types of condensation polymers (PAs, polyesters, PIs) that the heat treatment of suitable MS precursors can lead to solid‐state polymerization (SSP) with retention of the MS's shape . Such SSPs are typically performed under solvent‐free conditions by heating the MS to a T below its melting point .…”

Section: Resultsmentioning

confidence: 99%

“…It is well known for various types of condensation polymers (PAs,p olyesters,P Is) that the heat treatment of suitable MS precursors can lead to solid-state polymerization (SSP) with retention of the MSss hape. [45,46] Such SSPs are typically performed under solvent-free conditions by heating the MS to a T below its melting point. [47] Yet, reports on SSP in dispersed media exist, [48,49] and for PIs, SSP during HTP is apossible reaction pathway that occurs to varying extent depending on the MS solubility in HTW and its SSP temperature.…”

Section: Htp For Synthesis Of Pp6mentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal Generation of Conjugated Polymers Using the Example of Pyrrone Polymers and Polybenzimidazoles

et al. 2020

View full text Add to dashboard Cite

Various polyimides and polyamides have recently been prepared via hydrothermal synthesis in nothing but H2O under high‐pressure and high‐temperature conditions. However, none of the prepared polymers feature a truly conjugated polymer backbone. Here, we report on an expansion of the synthetic scope of this straightforward and inherently environmentally friendly polymerization technique to the generation of conjugated polymers. Selected representatives of two different polymer classes, pyrrone polymers and polybenzimidazoles, were generated hydrothermally. We present a mechanistic discussion of the polymer formation process as well as an electrochemical characterization of the most promising product.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Htp For Synthesis Of Pp6mentioning

confidence: 99%

Hydrothermal Generation of Conjugated Polymers Using the Example of Pyrrone Polymers and Polybenzimidazoles

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The pressure affect on the temperature and reaction time that directly afforded high molecular-weight polyimide. This method is useful for the synthesis of the polyimides having well defined structures, compared with the other synthetic methods [4].…”

Section: Preparation and Structure Of Polyimidesmentioning

confidence: 99%

“…They are unwanted impurity in production of nanostructured films with chromophores as a "guest" in the matrix, since they lead to low quality of dielectric and optical properties of layers. At Another way for synthesis of polyimides from Nylon-Salt-Type Monomers has been reported from Imai [4]. The method based on the melt polycondensation of diamine and pyromellitic acid half diester (pyromellitic acid diethyl ester) (Scheme 3).…”

Section: Preparation and Structure Of Polyimidesmentioning

confidence: 99%

“…The reaction between dianhydride (pyromellitic dianhydride PMDA) and diamine (4,4'-oxydianiline ODA) is required ambident conditions in dipolar aprotic solvents, such as N-methylpyrrolidone (NMP) or N,N-dimethylacetamide (DMAc). The next polycyclodehydration reaction of poly(amic acid) depending on ratio of precursors lead to final polyimide with different molar mass (Scheme 1) [4,5].…”

Section: Preparation and Structure Of Polyimidesmentioning

confidence: 99%

See 1 more Smart Citation