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  • 1
    Electronic Resource
    Electronic Resource
    Associative organotin polymers. I. Symmetric trialkyltin fluorides: Synthesis and properties (1989)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 1053-1063 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Four novel symmetric tri-n-alkyltin fluorides were prepared. In this homologous series, melting point decreases with increase in the carbon chain length while an x-ray diffraction study shows an increase in amorphousness. 1H-NMR spectra in cyclohexane, a nonpolar solvent in which these compounds form long polymeric chain, show a peak broadening effect due to high solution viscosity at very low solute concentration. Contrary to this, the spectra in CDCl3, a polar solvent in which these compounds are monomeric, show well resolved and narrow peaks. IR frequencies for Sn—C vibrations have been assigned.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1989.080270327
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  • 2
    Electronic Resource
    Electronic Resource
    Poly-1-hexene, synthesis and solubility in dense carbon dioxide (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 32 (1986), S. 3775-3781 
    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: Several poly-1-hexene samples were prepared using different Ziegler-Natta catalysts, and their solubilities in dense carbon dioxide (CO2) were studied. Despite the varied molecular weight distributions (MWD) in the polymers, a surprising correlation was found between intrinsic viscosity and dense CO2 solubility. Due to the ability of dense CO2 to extract low-molecular weight fractions preferentially, it is recommended that narrow MWD polymers be used, as far as possible, for dense CO2 solubility determinations.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070320232
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of 1-hexene polymerization (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 32 (1986), S. 5373-5383 
    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: Kinetics of 1-hexene polymerization was studied by following the amount of unreacted monomer using gas chromatography. The Ziegler-Natta catalyst system used was comprised of TiCl4-AlEt3 with Al: Ti ratio of 0.85. The sampling and monomer analysis techniques developed can be applied to study the kinetics of higher α-olefins polymerizations, in general. Also, with minor modifications in this technique, a precise profile of molecular weight can be obtained during polymerization.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070320611
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  • 4
    Electronic Resource
    Electronic Resource
    Polyimides from diisocyanates and dianhydridesNCL Communication No. 1990. (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 56 (1976), S. 163-171 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Polyimide wurden durch die Reaktion von 3,3′-Sulfonyl-bis(phenylisocyanat) [SDI] mit Pyromellitsäuredianhydriden [PMDA] und 3,3′,4,4′-Benzophenon-tetracarbonsäuredianhydriden (BPTD) hergestellt. Ihre Eigenschaften wurden mit denjenigen der durch die Reaktion zwischen 4,4′-Methylen-bis(phenylisocyanat) [MDI] und den entsprechenden Diahydriden gewonnenen Polyimiden verglichen.
    Notes: Polyimides were prepared by reacting 3,3′-sulfonyl-bis(phenyl isocyanate) [SDI] with pyromellitic dianhydride [PMDA] and also with 3,3′,4,4′-benzophenone tetracarboxylic acid dianhydride [BPTD]. Their properties were compared with those obtained by reacting 4,4′-methylene-bis(phenyl isocyanate) [MDI] with respective dianhydrides.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1976.050560113
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  • 5
    Electronic Resource
    Electronic Resource
    Polyimide copolymers by condensation of one dianhydride and two diisocyanates (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 66 (1978), S. 67-73 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Copolyimide wurden durch die Reaktion von 3,3′,4,4′-Benzophenon-tetracarbonsäuredianhydrid (BPTD) mit verschiedenen Mengen 3,3′-Sulfonylbis-(phenylisocyanat) (SDI) und 4,4′-Methylenbis-(phenylisocyanat) (MDI) in einem aprotischen Lösungsmittel hergestellt. Ferner wurden die Natur und die Eigenschaften dieser Polyimide untersucht.
    Notes: Copolyimides were prepared by reacting 3,3′,4,4′-benzophenone tetracarboxylic acid dianhydride (BPTD) with mixtures of various proportions of 3,3′-sulfonylbis (phenyl isocyanate) (SDI) and 4,4′-methylenebis (phenyl isocyanate) (MDI) in an aprotic polar solvent. The nature and properties of these copolyimides were studied.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1978.050660106
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  • 6
    Electronic Resource
    Electronic Resource
    Studies on the reactivities of diisocyanatesNCL Communication No. 1927. (1976)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 49 (1976), S. 129-137 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In der vorliegenden Arbeit wurden Bis(3-isocyanatophenyl)-sulfon und Bis(3-isocyanatophenyl)-methan hergestellt und ihre Reaktivität spektroskopisch untersucht.
    Notes: Bis(3-isocyanatophenyl)-sulfone and Bis(3-isocyanatophenyl)-methane were synthesized and their reactivities studied by spectroscopic methods.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1976.050490111
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  • 7
    Electronic Resource
    Electronic Resource
    Isocyanate modified polyimidesNCL Communication No. 2704. (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 99 (1981), S. 117-123 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Vier verschiedene, mit 3,3′-Sulfonyl-bis(phenylisocyanat) modifizierte Polyimide wurden synthetisiert und die elektrischen Eigenschaften der Polymer-Filme wurden gemessen.
    Notes: The synthesis of four different polyimides modified by 3,3′-sulfonyl-bis(phenyl isocyanate) was achieved and the electrical properties of polymer films were measured.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050990110
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  • 8
    Electronic Resource
    Electronic Resource
    Reactivity of N,N′-bismethylolpyromellitimide with isocyanates (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 18 (1980), S. 355-357 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.170180136
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