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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of aromatic-aliphatic polyamides containing azo linkage (1981)
    Springer
    Polymer bulletin 5 (1981), S. 417-424 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Two inherently coloured polyamides containing aromatic azo unit in their backbone were synthesised from 4,4′-diaminoazobenzene (1) and two aliphatic dicarboxylic acid chlorides (2a, 2b) using N-methyl pyrrolidone (NMP) and N,N-dimethyl acetamide (DMAc) as solvents by the low temperature solution polycondensation method. The polymers were characterised by inherent viscosity, solubility, infra-red and UV-visible spectroscopy. Thermogravimetric analysis of the polymers was carried out to study polymer stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282693
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  • 2
    Electronic Resource
    Electronic Resource
    Charge density—Activation energy correlations in electrophilic aromatic substitution reactions (1981)
    Springer
    Monatshefte für Chemie 112 (1981), S. 581-585 
    Details
    ISSN: 1434-4475
    Keywords: Activation energy ; Aromatic substitution ; Charge density ; Del Re method ; Hückel method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Für sechs aromatische Moleküle wurden mittelsHückelrechnung (MO-LCAO) und nach der Methode vonDel Re die Ladungsdichten errechnet und diese mit experimentellen Aktivierungsenergien korreliert.
    Notes: Abstract Charge-density calculations have been made on six aromatic molecules by making use ofHückel MOLCAO andDel Re methods and correlated with experimental activation energy values to test certain earlier interpretations given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899672
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  • 3
    Electronic Resource
    Electronic Resource
    On the substituent effects of halogens in aromatic substitutions (1979)
    Springer
    Monatshefte für Chemie 110 (1979), S. 647-655 
    Details
    ISSN: 1434-4475
    Keywords: Aromatic substitution ; Bromination, kinetics ; Kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bromierung von 4-Bromphenol mit Br2 in Essigsäure wurde untersucht. Außerdem wurden dieArrhenius-Aktivierungs-Energien für die Bromierung von vierp-substituierten PhenolenRC6H4OH (R=CH3, F, Cl und Br) genau bestimmt. Die beobachteten Substituenten-Effekte werden diskutiert und interpretiert.
    Notes: Abstract The general kinetic features of the bromination of 4-bromophenol by molecular bromine in acetic acid medium has been studied andArrhenius activation energies for the bromination of fourpara substituted phenols of the general formulaRC6H4OH (R=CH3, F, Cl, and Br) have been accurately determined. These values, which indicate an anomalous order in substituent effect of halogens, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938368
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of certain new poly(bisimide)s. I (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 375-388 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Maleic and citraconic anhydrides were reacted with several diamines to obtain a novel class of high temperature resistant bisimides.1-3 The bisimides were characterized by melting points, elemental analysis, UV-Vis, 1H- and 13C-NMR, and mass spectral analysis. The bisimide monomers were then polymerized by the addition process. A poly(amidemaleimide) was also synthesized by reacting maleic anhydride with p-aminobenzhydrazide. The thermal stability of these highly crosslinked poly(bisimide)s were examined by TGA and DTA. A neat bisimide monomer obtained from 2,2′-bis[4(p-aminophenoxy)phenyl] propane with maleic anhydride namely, 2,2′-bis[4-(p-maleimidophenoxy)phenyl]propane was reacted with 2,2′-bis[4(p-aminophenoxy)phenyl]propane by the Michael reaction.4 A fiber glass cloth reinforced laminate was prepared from bismaleimide and amine mixture and the mechanical properties of the test laminate evaluated.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270132
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of certain aromatic azopolyamides (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 829-838 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Two new aromatic diamines, 2,2′-dimethyl-4,4′-diaminoazobenzene [benzenamine-(3,3′-dimethyl-4,4′-azobis)] and 2,2′-dichloro-4,4′-diaminoazobenzene [benzenamine-(3,3′-dichloro-4,4′-azobis)] were synthesized and their structures confirmed by IR, UV-visible, 1H-NMR, 13C-NMR, and mass spectra. With these diamines, 16 aromatic polyamides were synthesized by both low-temperature solution and phosphorylation polycondensation methods. The polymers were characterized by viscosity, solubility, IR, UV visible, TGA, and DTA studies.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1987.080250308
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis, characterization, and fiber studies of certain aromatic polyamides (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 1423-1432 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Three aromatic polyamides containing alkyl and ether linkages in the main chain were synthesized, using low-temperature solution and interfacial polycondensation procedures, and were characterized by viscosity, solubility, UV, IR, TGA, and DSC studies. Fibers were spun using a laboratory-scale wet spinning unit and their mechanical and morphological properties studied. The results were correlated with structure and spinning conditions.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270501
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of some aliphatic polyamides containing 4,4′-azodiphenylene units (1983)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 184 (1983), S. 2225-2230 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polyamides containing azo groups were prepared by the phosphorylation method from 4,4′-diaminoazobenzene and malonic, succinic, glutaric, adipic, azelaic, sebacic, or chlorosuccinic acid. The polymers were characterized by their viscosity and solubility, and by UV-visible and IR spectroscopy, TG, and DTA.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1983.021841104
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  • 8
    Electronic Resource
    Electronic Resource
    Thermal behavior and fiber studies of certain azoaromatic polyamides (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 37 (1989), S. 3281-3290 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Two aromatic polyamides containing azo linkage in the main chain were synthesized and characterized by TGA, DTA, and pyrolysis-GC-chemical ionization mass spectra. Fibers were also spun using a laboratory scale wet spinning unit and their mechanical and morphological properties studied. The results were correlated with structure and spinning conditions.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1989.070371201
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  • 9
    Electronic Resource
    Electronic Resource
    Synthesis of aromatic polyimides containing ether linkage (1980)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 1 (1980), S. 667-670 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1980.030011102
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis of a new azopolyamide-hydrazide (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 21 (1983), S. 1227-1231 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.170210430
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