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  • 1990-1994  (6)
  • 1993  (6)
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  • 1990-1994  (6)
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  • 1
    Electronic Resource
    Electronic Resource
    Silver(I)-induced coupling polymerization of bifunctional organoboron compounds (1993)
    s.l. : American Chemical Society
    Macromolecules 26 (1993), S. 2643-2644 
    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/ma00062a043
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hydroboration polymerization of dicyano compounds (1993)
    Springer
    Polymer bulletin 31 (1993), S. 553-558 
    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 Hydroboration polymerization of various α,ω-dicyanoalkanes with thexylborane produced the corresponding poly(cyclodiborazane)s, that consist of boron-nitrogen four-membered rings. The structures of the obtained polymers were confirmed by spectroscopic analyses such as 1H-, 11B-NMR and IR spectra. From the result of thermogravimetric analysis of the polymer prepared from adiponitrile and thexylborane, 12% of the inorganic materials remained after heating at 900°C. *** DIRECT SUPPORT *** AEB03051 00003
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00297891
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  • 3
    Electronic Resource
    Electronic Resource
    Hydroboration of styryl-terminated polystyrene with bifunctional thexylborane (1993)
    Springer
    Polymer bulletin 30 (1993), S. 215-222 
    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 Hydroboration reaction of the terminal double bond of polystyrene with thexylborane gave the polymer bearing one organoboron unit at the center of the polymer, whose molecular weight was found to be doubled in comparison with the starting polymer. The obtained polymer was subjected to the novel polymer reaction with α,α-dichloromethyl methyl ether (DCME) followed by the oxidative treatment. A polymer having one tertiary alcohol unit at the center in the main chain was produced without obvious decrease of the molecular weight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296852
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of novel organometallic polymers having metallacyclopentadiene moieties in the main chain by the reaction of diynes with (η5-cyclopetadienyl)bis(tripheylophospihne)cobalt complex (1993)
    Springer
    Polymer bulletin 30 (1993), S. 179-186 
    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 Polymerization reactions of η5-cyclopentadienyl)bis(triphenylphosphine)cobalt complex (2) and diyne monomers (3a-3c) were examined to obtain novel organometallic polymers bearing metallacyclopentadiene moieties in the main chain. When the polymerization reaction of 2 with 4,4′-bis(phenylethynyl)biphenyl (3a) was carried out in toluene at 50°C for 3days, an organometallic polymer having cobaltacyclopentadiene in the main chain was obtained quantitatively. The structure of the resulting polymer was confirmed by 1H-, 13C-NMR, IR, and UV spectra. The number-average molecular weight of the obtained polymer was evaluated as 9,600 (GPC, on the basis of polystyrene).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296847
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  • 5
    Electronic Resource
    Electronic Resource
    Hydroboration polymerization of dicyano compounds (1993)
    Springer
    Polymer bulletin 31 (1993), S. 547-552 
    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 The steric effects of the alkyl substituents on the monoalkylborane monomers in hydroboration polymerization of dicyano compounds were examined. t-BuBH2·NMe3 gave the corresponding poly(cyclodiborazane)s by the reaction with aromatic dicyano compounds such as terephthalonitrile or isophthalonitrile. When less sterically hindered n-BuBH2·NMe3 was used as a monomer, the polymerization with isophthalonitrile resulted in gelation due to the further hydroboration reaction of initially formed iminoborane species. On the other hand, i-PrBH2·NMe3 gave the soluble polymers, which showed, however, lower molecular weights in comparison with those from t-BuBH2·NMe3. From these results, hindered alkyl groups in monoalkylboranes were found to play an important role to prevent side reactions in hydroboration polymerization of dicyano compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00297890
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis and radical polymerization of allenyl ethers with oligo(oxyethylene) moieties (1993)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 194 (1993), S. 3323-3328 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Synthesis and radical polymerization of allenyl ethers with oligo(oxyethylene) moieties (1a-1c: CH2=C=CH—O—(CH2CH2O)m—CH3, m = 3 - 1) were examined. The polymerization of 1a(m = 3) in bulk with 2,2′-azoisobutyronitrile as initiator at 60°C gives the polymer 2a in 51% yield with 75% of the double bonds remaining in the polymer chain (estimated by 1H NMR). The polymers 2a-2c are hydrophilic, soluble in protic solvents such as water and methanol, and are subject to crosslinking upon storage in the air.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1993.021941210
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    Paper (German National Licenses)
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