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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of arylacetylenes by the sodium hydride catalyzed cleavage of 4-aryl-2-methyl-3-butyn-2-ols (1985)
    s.l. : American Chemical Society
    The @journal of organic chemistry 50 (1985), S. 1763-1765 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00210a042
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of Difunctional Triarylethanes with Pendent Ethynyl Groups: Monomers for Crosslinkable Condensation Polymers1 (1994)
    s.l. : American Chemical Society
    The @journal of organic chemistry 59 (1994), S. 2506-2510 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00088a035
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal Analysis of a Poly(phenyl-as-triazine) (1970)
    s.l. : American Chemical Society
    Macromolecules 3 (1970), S. 548-552 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma60017a015
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  • 4
    Electronic Resource
    Electronic Resource
    Polyimides Containing Quinoxaline and Benzimidazole Units (1994)
    s.l. : American Chemical Society
    Macromolecules 27 (1994), S. 4659-4664 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00095a004
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  • 5
    Electronic Resource
    Electronic Resource
    Polyphenylquinoxalines containing pendant phenylethynyl groups: Preliminary mechanical properties (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 28 (1983), S. 355-366 
    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: Polyphenylquinoxalines (PPQ's) containing various amounts of crosslinkable pendant phenylethynyl groups were prepared from the reaction of 3,3′,4,4′-tetraaminodiphenyl ether, 4,4′-oxydibenzil, and 4,4′-oxybis(4″-phenylethynylbenzil). The distribution of the pendant phenylethynyl groups along the polymer chain was varied in an attempt to alter the properties of the polymers. Preliminary film, adhesive, and laminate properties of PPQ void of pendant crosslinkable groups and containing pendant phenylethynyl groups were determined. The thermally induced reaction of the phenylethynyl group crosslinked the polymer which resulted in better dimensional stability at elevated temperatures.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1983.070280131
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  • 6
    Electronic Resource
    Electronic Resource
    Perspective: Comments on “aromatic polypyromellitimides from aromatic polyamic acids,” by C. E. Sroog, A. L. Endrey, S. V. Abramo, C. E. Berr, W. M. Edwards, and K. L. Olivier, J. Polym. Sci. A, 3, 1373 (1965) (1996)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 34 (1996), S. 2067-2068 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1996.845
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  • 7
    Electronic Resource
    Electronic Resource
    Chemistry and properties of a phenylethynyl-terminated polyimide (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 59 (1996), S. 1249-1254 
    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: As part of an ongoing effort to develop processable, high-performance resins for aerospace applications, a phenylethynyl-terminated imide (PETI) oligomer designated LaRCMTPETI-1 was developed. This reactive oligomer has a number-average molecular weight of 6300 g/mol and a Tg of 218°C. Upon curing the reactive oligomer at 350°C for 1 h, a tough material with a Tg of 249°C was obtained. The properties of cured PETI-1 in the form of composites, adhesive specimens, thin films, and neat resin moldings are excellent. The synthesis, characterization, and mechanical properties of this polyimide are discussed. © 1996 John Wiley & Sons, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Adhesive and composite evaluation of acetylene-terminated phenylquinoxaline resins (1981)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 21 (1981), S. 1072-1078 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: A series of acetylene-terminated phenylquinoxaline (ATPQ) oligomers of various molecular weights were prepared and subsequently chain extended by the thermally induced reaction of the ethynyl groups. The processability and thermal properties of these oligomers and their cured resins were compared with that of a relatively high molecular weight linear polyphenylquinoxaline (PPQ) with the same chemical backbone. The ATPQ oligomers exhibited significantly better processability than the linear PPQ but, the PPQ displayed substantially better thermooxidative stability. Adhesive (Ti/Ti) and composite (graphite filament reinforcement) work was performed to evaluate the potential of these materials for structural applications. The PPQ exhibited better retention of adhesive and laminate properties than the ATPQ resins at 260°C after aging for 500 h at 260°C in circulating air.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760211605
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  • 9
    Electronic Resource
    Electronic Resource
    High performance thermoplasticsPaper presented at the meeting of the GDCh-Fachgruppe “Makromolekulare Chemie” on “New Polymers-special properties-modern technologies” in Bad Nauheim (W. Germany) on April 14/15 1986 (1986)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 145 (1986), S. 323-341 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Thermoplastics are currently receiving considerable attention for potential use as structural resins in aerospace vehicles. These materials offer an attractive combination of chemical, physical and mechanical properties. Perhaps the most important advantage offered by the thermoplastics over the new toughened thermosets in composite applications is the potential of low cost manufacturing. However, many problems must be resolved with the thermoplastics before they find extensive use in aerospace composite applications. As part of an effort on improved thermoplastics for use as structural resins, NASA Langley Research Center has been intimately involved in research on polyimides, polyarylene ethers, and polyphenylquinoxalines. Several new semi-crystalline polyimides with high adhesive properties [e.g. Ti/Ti tensile shear strength @ 25°C of 54.1 MPa] and high fracture energies (GIc) [e.g. 6600 J/M2] are under evaluation. New polyarylene ethers offer glass transition temperatures ranging from 114 to 280°C, crystalline melt temperatures of 275 to 400°C, fracture energies (GIc) as high as 6300 J/M2, and good processability. Ethynyl groups were placed on the ends of arylene ether oligomers and subsequently cured to provide materials with excellent adhesive properties and solvent resistance. In the polyphenyl-quinoxaline family, various new homo, co and crosslink polymers display improved processability, good mechanical properties, and higher use temperature. The chemistry (structure/property relationships), mechanical and physical properties of these new thermoplastics are discussed herein.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1986.051450116
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  • 10
    Electronic Resource
    Electronic Resource
    Entwicklungsperspektiven für hochtemperaturbeständige Polymere (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 102 (1990), S. 1302-1309 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mit der Forschung auf dem Gebiet der hochtemperaturbeständigen Polymere wurde in den späten fünfziger Jahren begonnen, vorwiegend zur Erfüllung der Anforderungen in der Luft-fahrt- und Elektronikindustrie. Seither wurde eine große Zahl hochtemperaturbeständiger Polymersysteme beschrieben, von denen mehrere jetzt kommerziell verfügbar sind. Diese Polymermaterialien werden in vielen Anwendungsgebieten eingesetzt, z. B. in der Mikroelektronik, zur Herstellung von Beschichtungen für Kochtöpfe oder Pfannen, von Bindemitteln für Bremssysteme, von Dichtungsmitteln für Brennstofftanks von Hochgeschwindigkeitsflugzeugen, von Zahnrädern in Kopiermaschinen, von Strukturkomponenten für Hochgeschwindigkeitsflugzeuge und Raumfahrzeuge sowie von Folien und Drahtumhüllungen als elektrische Isolierung. Der Weltverbrauch für hochtemperaturbeständige Polymere wurde 1988 auf 90 Mio. kg mit einem Wert von 2.3 Mrd. $ geschätzt. Der Markt wird sich voraussichtlich bis zum Ende des Jahrzehnts verdoppeln. Im Vordergrund des Beitrags stehen Polyimide und Poly(arylether).
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19901021113
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