Synthese von aromatischen Polyketonen durch Fällungspolykondensation

Gileva, N. G.; Solotuchin, M. G.; Salaskin, S.; Sultanova, V. S.; Hörhold, H.‐H.; Raabe, D.

doi:10.1002/actp.1988.010390816

Cited by 35 publications

(18 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the carbonyl groups of the reactants and the reaction products are complexed with AlCl 3 , and thereby deactivate it, AlCl 3 is generally employed at more than one equivalent of carbonyl groups in the reaction medium . The optimum molar ratio of AlCl 3 to carbonyl group was reported to be 1.35 to 1.45 . In our modified Friedel‐Crafts acylation polycondensation reaction, an additional amount of AlCl 3 was needed for the formation of a 1:1 complex of AlCl 3 and NMP due to the addition of NMP as the controlling agent.…”

Section: Resultsmentioning

confidence: 97%

Synthesis and properties of poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain

et al. 2015

View full text Add to dashboard Cite

Two monomers, 4,4 0 -bis(4-phenoxybenzoyl)biphenyl (BPOBBP) and 4,4 0 -diphenoxydiphenyl sulfone (DPODPS), were conveniently synthesized via simple synthetic procedures from readily available materials. A series of novel poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain were synthesized by the modified electrophilic Friedel-Crafts acylation copolycondensation of isophthaloyl chloride (IPC) with a mixture of BPOBBP and DPODPS, over a wide range of BPOBBP/DPODPS molar ratios. The resulting polymers were characterized by Fourier transform infrared spectroscopy (FT-IR), wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA), etc. The results indicated that the copolymers with 30 to 35 mol% DPODPS were semicrystalline and had remarkably increased glass transition temperatures (T g s) over the conventional poly(ether ether ketone) (PEEK) and poly(ether ketone ketone) (PEKK) due to the incorporation of biphenylene units and sulfone linkages in the main chain. The copolymers with 30 to 35 mol% DPODPS had not only high T g s of 176 to 177 C, but also moderate melting temperatures (T m s) of 334 to 337 C, having good potential for the melt processing. The semicrystalline copolymers II to V had tensile strengths of 99.8 to 103.1 MPa, Young's moduli of 2.26 to 2.79 GPa, and elongations at break of 16.8 to 26.5% and exhibited outstanding thermal stability and good resistance to organic solvents. POLYM. ENG. SCI., 55:2140-2147, 2015

show abstract

Section: Resultsmentioning

confidence: 97%

Synthesis and properties of poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain

et al. 2015

View full text Add to dashboard Cite

show abstract

“…after phase separation. Recently we have [6][7][8][9][10] shown that precipitation electrophilic Friedel Crafts polycondensation can be performed in such a way that the polymer precipitate presents quite uniform small particles. This process has unquestionable technological advantages, since pure polymer can be recovered just by filtration followed by washing with organic solvents and drying.…”

Section: Introductionmentioning

confidence: 99%

Aromatic polymers obtained by precipitation polycondensation: 4. Synthesis of poly(ether ketone ketone)s

Zolotukhin

Rueda

Calleja

et al. 1997

Polymer

View full text Add to dashboard Cite

High molecular weight aromatic poly(ether ketone ketone)s were synthesized by the Friedel-Crafts polyacylation condensation of iso-and terephthaloyl chlorides with diphenyl ether, 1,4-and 1,3-bis(4-phenoxybenzoyl)benzenes. Depending on the monomers used for polycondensation, polyketones of regular structure with different iso-/tereisomer repeating unit ratio (100/0, 50/50, 0/100) in the main chain were obtained. Polymers of each repeating isomer unit were prepared in two different ways. All the polymer syntheses were performed as precipitation polycondensations and the resulting polymers were obtained in particle form. The influence of reaction conditions and preparation route on the polymer properties were examined. The monomer concentration and monomer stoichiometric ratio were found to affect the polymer viscosity. The size and shape of the polyketone particles obtained were also found to be governed by reaction conditions and preparation route.

show abstract

“…Because the carbonyl groups of the reactants and the reaction products are complexed with AlCl 3 , and thereby deactivate it, AlCl 3 is generally employed at more than one equivalent of carbonyl groups in the reaction medium 30, 31. The optimum ratio of AlCl 3 to carbonyl group was reported to be 1.35–1.45 13, 32. In our modified Friedel–Crafts acylation polycondensation, an additional amount of AlCl 3 was needed for the formation of a 1:1 complex of AlCl 3 and NMP due to the addition of Lewis base (NMP) as the controlling agent.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of aromatic poly(ether amide amide ether ketone ketone)s by electrophilic Friedel–Crafts solution polycondensation

Cai

Zhu

Qian

et al. 2011

Polymers for Advanced Techs

View full text Add to dashboard Cite

A new monomer, N,N′‐bis(4‐phenoxybenzoyl)‐p‐phenylenediamine (BPBPPD), was prepared by the condensation of p‐phenylenediamine with 4‐phenoxybenzoyl chloride in N,N‐dimethylacetamide (DMAc). Novel aromatic poly(ether amide amide ether ketone ketone)s (PEAAEKKs) were synthesized by electrophilic Friedel–Crafts solution copolycondensation of BPBPPD with a mixture of terephthaloyl chloride (TPC) and isophthaloyl chloride (IPC), over a wide range of TPC/IPC molar ratios, in the presence of anhydrous aluminum chloride and N‐methylpyrrolidone (NMP) in 1,2‐dichloroethane (DCE). The influences of reaction conditions on the preparation of polymers were examined. The polymers obtained were characterized by different physico–chemical techniques such as FT‐IR, Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), and wide angle X‐ray diffraction (WAXD). The polymers with 70–100 mol% IPC are semicrystalline and have remarkably increased Tgs over commercially available poly(ether ether ketone) (PEEK) and poly(ether ketone ketone) (PEKK) due to the incorporation of amide groups in the main chain. The polymers with 70–80 mol% IPC had not only high Tgs of 209–213°C, but also moderate Tms of 339–348°C, which are suitable for melt processing. The polymers with 70–80 mol% IPC had tensile strengths of 107.5–109.8 MPa, Young's moduli of 2.53–2.69 GPa, and elongations at break of 9–11% and exhibited high thermal stability and good resistance to organic solvents. Copyright © 2009 John Wiley & Sons, Ltd.

show abstract

Synthese von aromatischen Polyketonen durch Fällungspolykondensation

Cited by 35 publications

References 3 publications

Synthesis and properties of poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain

Synthesis and properties of poly(aryl ether ketone)s containing both biphenylene moieties and sulfone linkages in the main chain

Aromatic polymers obtained by precipitation polycondensation: 4. Synthesis of poly(ether ketone ketone)s

Synthesis of aromatic poly(ether amide amide ether ketone ketone)s by electrophilic Friedel–Crafts solution polycondensation

Contact Info

Product

Resources

About