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  • 1
    Electronic Resource
    Electronic Resource
    Verfolgung der Härtung von Epoxidharz bis zum Gelpunkt mit hochauflösender Ausschlußchromatographie (SEC) (1990)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 41 (1990), S. 593-594 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1990.010411111
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  • 2
    Electronic Resource
    Electronic Resource
    Polymere Hydrochinonsulfonamide, 21. Mitteilung: cf.1.. Reaktionsprodukte aus 2-Amino- bzw. 2,6-Diaminohydrochinonen mit monomeren und polymeren Sulfochloriden (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 3251-3267 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(4-styrenesulfonic acid chloride), crosslinked with divinylbenzene isomers reacted with 3-amino-4-hydroxyphenyl benzoate (2a) in various mole ratios. After saponification sulfo groups containing redox resins of restricted swelling capacity were obtained. 2a reacted with ethylenesulfonic acid chloride only to form a benzo[f]-[1,4,5]-oxathiazepine derivative 5. The condensation of 2,6-bis(chlorosulfonyl)-1,4-phenylene diacetate (8b) and of 1,3-benzenedisulfonic acid chloride (8c), respectively, with 3,5-diamino-4-hydroxyphenyl benzoate (9e) led only to oligomers.
    Notes: Durch Reaktion von 3-Amino-4-hydroxyphenylbenzoat (2a) mit Poly(4-styrolsulfonsäurechlorid), vernetzt mit Divinylbenzolisomeren, in verschiedenen Molverhältnissen konnten nach der Verseifung begrenzt quellbare, sulfogruppenhaltige Redoxharze erhalten werden. 2a reagierte mit Äthylensulfonsäurechlorid nur unter intramolekularer Cyclisierung zu einem Benzo[f]-[1,4,5]-oxathiazepin-Derivat 5. Die Kondensation von 2,6-Bis(chlorsulfonyl)-1,4-phenylendiacetat (8b) bzw. 1,3-Benzoldisulfonsäurechlorid (8c) mit 3,5-Diamino-4-hydroxyphenylbenzoat (9e) führte lediglich zu Oligomeren.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021761111
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  • 3
    Electronic Resource
    Electronic Resource
    Optical anisotropy of oriented deoxyribonucleic acid films of different water content (1969)
    New York : Wiley-Blackwell
    Biopolymers 8 (1969), S. 391-401 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ultraviolet absorption and dichroism measurements on oriented films of calf thymus deoxyribonucleic acid (DNA) at varying degrees of hydration show a structural hysteresis which occurs within a relative humidity of 0 to 65% RH. This hysteresis is interpreted on the basis of a model which assumes the existence of structure-stabilizing hydrogen water bridges in the DNA double helix.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.1969.360080309
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  • 4
    Electronic Resource
    Electronic Resource
    Attaching of flexible chains to novolacs on the basis of bisphenol A (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 60 (1996), S. 1221-1229 
    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: Networks containing both flexible segments and rigid structures were synthesized on the basis of bisphenol A novolacs and diglycidylether of butanediol using imidazole as an accelerator. A stoichiometric ratio between epoxy groups and phenolic groups of the novolacs leads to networks with methylene bridges as network junctions. In contrast to this, the same reaction with bisphenol A leads to completely soluble products. The glass transition temperature of this soluble material is considerably lower than the glass transition temperature of the networks. Increasing content of methylene bridges in the novolacs leads to an increase of the glass transition temperature of the networks and to a decrease of the δcp value at the glass transition. Furthermore, epoxy excess leads to networks with rubber-structure of the bisphenol A novolac used in the reaction with the diglycidylether. It was found that conformations with intramolecular hydrogen bondings exist between phenolic hydroxyl groups, which considerably influence the reactivity of the novolac with the epoxy group. © 1996 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Hydrierung von Kohlendioxid an oxidiertem Kobalt - Modelluntersuchungen zur Aktivierung und Desaktivierung des Katalysators (1991)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 63 (1991), S. 613-615 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330630614
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  • 6
    Electronic Resource
    Electronic Resource
    Polymérisation “basse pression” de l'ethylène en préasence de noir de carbone (1968)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 6 (1968), S. 2359-2375 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The polymerization of ethylene with Ziegler-Natta catalysts in the presence of carbon black has shown three characteristic features both with a heterogeneous catalyst, AlBu3—TiCl4, and with a soluble catalyst, Cl2Ti(C5H5)2—AlEt2Cl. They are, in order of increasing importance: reactivity of the organoaluminum derivatives with surface chemical groups of the carbon black, adsorption of a certain amount of organoaluminum compounds on the carbon black surface, and influence of the specific surface of carbon black, which controls the dispersion degree of the catalytic system. Furthermore, it was possible to obtain polyethylene by this procedure, containing different amounts and different types of carbon black.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1968.150060828
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