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  • 1
    Electronic Resource
    Electronic Resource
    Cure of epoxy resins with cyanoacetamides (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 1361-1376 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cyanoacetamides are a novel class of curing agents for epoxy resins. Since reaction products of epoxy compounds with cyanoacetamides have not yet been described, we investigated the reaction of phenyl-glycidylether (PGE) and N-isobutylcyanoacetamide (NICA) under the conditions of the epoxy cure (120-150°C). Twenty-two fractions of the reaction product have been separated by preparative TLC and characterized by FD and MS mass spectroscopy. The structures of 10 reaction product have been elucidated by MS, NMR, and IR techniques. They belong to the classes of cyclic urethanes, spiro-dilactones, cyclo-oxa-1-hepten-4-one-2, pyrimidones, aminocrotononitrile, and tertiary amine. This complex model reaction mixture does not enable us to propose a curing mechanism. However practical cure of Bisphenol A diglycidylether (BADGE) yields clear and tough solids with a glass transition temperature up to 200°C, good mechanical strength, and high adhesion to metal surface. Cyanoacetamides are latent hardeners requiring a curing initiator. Since N-4-chlorophenyl-N′-dimethylurea is a latent initiator, liquid, homogeneous, storage stable “one shot” systems can be formulated which harden quickly above 120°C. Heat aging properties of cured specimens are reported. A series of novel liquid, resinous, and crystalline cyanoacetamides and their potential as curing agent are described.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1988.080260510
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  • 2
    Electronic Resource
    Electronic Resource
    Vinyl oil monomers. I. Vicinal methacryloxy-hydroxy soy oils (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 7 (1963), S. 1853-1866 
    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: New vinyl oil monomers have been prepared by combining epoxidized unsaturated oils with vinyl carboxylic acids. This is accomplished by heating the reactants in the presence of free radical inhibitors and appropriate reaction catalysts. The reaction consists of cleavage of the oxirane ring followed by addition of the vinyl acid through its carboxylic group. By varying the reactants and the conditions of reaction, a large family of related, but different, vinyl oil monomers can be prepared. Vicinal methacryloxy-hydroxy soy oil monomers are clear, yellow, medium viscosity (2000-2500 cpoise), high molecular weight (1300-1500) liquids. Chemical analyses are presented for typical preparations. The monomers readily homopolymerize by a free radical mechanism to clear, solid, thermoset resins. They are compatible with a variety of commercial vinyl monomers and form copolymers which range from highly viscous liquids through soft gels, to tough rubbery products and hard resins. Data are presented on physical properties of copolymer castings of several specific vicinal methacryloxy-hydroxy soy oil monomers.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1963.070070523
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  • 3
    Electronic Resource
    Electronic Resource
    On the presence of crystallinity in hydrogenated polybutadienes (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 14 (1970), S. 2416-2420 
    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
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1970.070140922
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  • 4
    Electronic Resource
    Electronic Resource
    The influences of electrical potential and surface finish on the fatigue life of surgical implant materials (1975)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 9 (1975), S. 611-621 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The influence of both imposed anodic potential in Ringer's solution and surface finish on the fatigue lives of annealed 316 type stainless steel and annealed pure titanium were measured and statistically compared to fatigue data run in air. The applied potentials in simulated extracellular fluid approximated conditions existing within the body while also producing the types of surface defects actually found on removed long time implants within the time interval of the accelerated R. R. Moore fatigue tests. Differentiating tests were run at single levels of applied cyclic stress well above the endurance limits.In Ringer's solution, the fatigue life of the 316 stainless steel decreased with increasing applied potential, and at +500 mV was significantly shorter than when run in air. At each condition, the 316 stainless steel was independent of initial surface finish. In contrast, the fatigue life of titanium improved rapidly with increasingly fine surface finishes. Furthermore, compared to air, the application of +500 mV in Ringer's solution improved the life of the rough surface finished material and markedly increased the number of cycles to failure for the electropolished specimens.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820090607
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  • 5
    Electronic Resource
    Electronic Resource
    Messung mechanischer eigenschaften von kunststoffen mit einem heizbaren pendelgerät (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 67 (1978), S. 99-116 
    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: The well-known pendulum apparatus for the testing of paints (DIN 53157) has been provided with a heating unit and used for testing polymer materials.The obtained value (PW) turns out to be easily determinable and appropriate for the characterization of viscoelastic properties of polymers as a function of temperature. The results are discussed in connection with those obtained with the torsional pendulum.This paper is intended to stimulate further measurements, discussions and above all to bring up new interpretation possibilities of the results.
    Notes: Das nach DIN 53157 bekannte und der Lackprüfung dienende Pendelgerät wurde für diese Messungen mit einer Heizung versehen und für Untersuchungen an Kunststoffen eingesetzt. Die erhaltene Meßgröße, der Pendelwert, erweist sich als eine geeignete und leicht bestimmbare Größe zur Charakterisierung verschiedener Kunststofftypen und erlaubt eine Beschreibung und Erklärung ihres visko-elastischen Verhaltens in Abhängigkeit von der Temperatur. Die Ergebnisse werden auch im Vergleich mit den Ergebnissen aus freien Torsionsschwingungen diskutiert. Weitere Messungen, Diskussionen und vor allem eine Erweiterung der Interpretation der Ergebnisse sollen durch diese Arbeit angeregt werden.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1978.050670108
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  • 6
    Electronic Resource
    Electronic Resource
    Contribution à l'étude de la sorption du dioxanne-1,4 par un film amorphe de poly-téréphtalate d'éthylène glycol et des modifications physiques du polymère engendrées par cette sorption. II. Aspect énergétique de la sorption du dioxanne-1,4 dans la polymère amorphe et de son échange par l'éthanol (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 67 (1978), S. 45-60 
    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: Gravimetric and microcalorimetric results connected with regard to 1,4-dioxane vapour sorption at 20°C into polyethylene terephthalate enable to specify the mechanism of solvent action in terms of relative pressure. Near vapour saturation we can discern: non-reversing fixation of dioxane on special sites, partition in the amorphous region, adsorption at the surface of crystallites gradually formed by solvent action and organized into a swollen texture.According to the conditions of pretreatment with dioxane, of rinsing and drying, a further ethanol sorption displays: a non-reversing exchange mole to mole of fixed dioxane, an adsorption at the surface of crystallites, a diffusion into the free volume of the swollen texture.
    Notes: Les résultats de gravimétrie et microcalorimétrie couplées concernant la sorption en phase vapeur à 20°C du dioxanne-1,4 par le polytéréphtalate d'éthylène glycol permettent de préciser le mécanisme d'action du solvant en fonction de la pression partielle. Au voisinage de la pression saturante il est possible de distinguer: la fixation irréversible sur certains sites, la disolution dans les zones amorphes, l'adsorption à la surface des cristallites progressivement formées sous l'action du solvant et organisées selon une texture gonflée. Selon les conditions de prétraitement par le dioxanne, de lavage et de séchage, une sorption ultérieure d'éhanol met an évidence: un échange irréversible mole à mole du dioxane fixé, une adsorption à la surface des cristallites, une diffusion dans les volumes libres de la texture gonflée.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1978.050670104
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  • 7
    Electronic Resource
    Electronic Resource
    Contribution à l'étude de la sorption de dioxanne-1,4 par un film amorphe de poly(téréphtalate d'éthylène glycol) et des modifications physiques du polymère engendrées par cette sorption, 1. Étude de la sorption du dioxanne-1,4 dans le polymère amorphe (1975)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 176 (1975), S. 3385-3399 
    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: The radiochemical methods used allow the study of the penetration of 1,4-dioxane into an amorphous poly(ethylene terephthalate), (PETP), film, by estimation of solvent uptake and penetration depth into the polymeric sample. They also contribute to the study of the desorption of the 1P-dioxane retained by the polymer under different drying conditions, or by exchange with another solvent, the sorption of which allows the characterization of the morphological changes which occurred during the drying of the 1,4-dioxane pretreated film.The kinetics of the liquid 1,4-dioxane sorption being very fast, a gravimetric study of 1,4-dioxane vapours sorption pointed out the plasticizing effect of this solvent as well as the existence of a reject phenomenon of solvent consequently to a crystallization induced by the plasticizing of the PETP. The 1,4-dioxane sorption is strongly exothermal and polymer-solvent interactions can occur involving the fixation of 1,4-dioxane into the polymer.
    Notes: Les méthodes radiochimiques utilisées permettent de suivre la pénétration du dioxanne-1,4 dans un film de poly(téréphtalate d'éthylène glycol) (PETP) amorphe, par dosage du taux de reprise de ce solvant et par estimation de la profondeur de pénétration de ce dernier dans l'échantillon polymérique. Elles contribuent également à l'étude de la désorption du dioxanne-1,4 retenu par le polymère dans différentes conditions de séchage, ou par échange avec un autre solvant dont la sorption permet de caractériser des modifications morphologiques survenues au cours du séchage du film prétraité au dioxanne-1,4.La cinétique de sorption du dioxanne-1,4 en milieu liquide étant excessivement rapide, une étude gravimétrique de sorption de vapeurs de dioxanne-1,4 a montré le rǒle plastifiant de ce solvant ainsi que l'existence d'un phénomène de rejet de celui-ci, par suite d'une cristallisation contrǒlée par la plastification du PETP. La sorption du dioxanne-1,4 est fortement exothermique et des interactions polymère-solvant peuvent se produire en entraǐnant la fixation de dioxanne-1,4 dans le polymère.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1975.021761121
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  • 8
    Electronic Resource
    Electronic Resource
    Die Korrosionsbeständigkeit der nichtrostenden Stähle an der Atmosphäre. Erfahrungen in DeutschlandVorgetragen auf der 21. Veranstaltung der europäischen Föderation Korrosion: „Atmosphärische Korrosion der Metalle“ am 8. 11. 1963 in Frankfurt/M. (1964)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 15 (1964), S. 804-808 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The corrosion resistance of stainless steels exposed to the atmosphere. Experience in GermanyIn a joint investigation, the behaviour of stainless steel exposed to atmospheric corrosion has been examined. Specimens with four different surface treatments of steels 1.4016 (17 pC chromium), 1.4301 (18pC Cr, 9pC Ni), and 1.4401 (l8pC Cr, 10 pC Ni, 2 pC Mo) have been exposed on test stands at Munich, Frankfurt, Düsseldorf, Essen and Cuxhaven. After one year of exposure, and applying different degrees of cleansing, the results can be summed up as follows:The corrosion resistance of 17 pC Cr steel is not adequate for atmospheric corrosion.The corrosion resistance of 18/10/2 Cr-Ni-Mo steel was satisfactory everywhere.18/8 Cr—Ni steel has an adequate corrosion resistance in rural and normal urban atmospheres (Munich, Frankfurt); in an industrial atmosphere (Essen), regular cleaning is essential. A smoother surface (matt polished or electro-polished) has a beneficial effect, especially in polluted industrial atmosphere.
    Notes: In einer Gemeinschaftsuntersuchung wird das Verhalten nichtrostender Stäble an der Atmosphäre geprüft. Proben mit 4 verschiedenen Oberflächenausführungen der Stähle 1.4016 (17% Cr), 1.4301 (18% Cr, 9% Ni) und 1.4401 (18% Cr, 10% Ni, 2% Mo) wurden auf Versuchsständen in München, Frankfurt, Düsseldorf, Essen und Cuxhaven ausgelegt. Als Ergebnis nach einem Jahr Auslagerung bei unterschiedlichem Reinigungsaufwand wird festgestellt:17%iger Cr-Stab1 ist für Außenatmosphären nicht ausreichend korrosionsbeständig;.18/10/2-Cr—Ni—Mo-Stahl war an allen Plätzen vollkommen beständig.In ländlicher und in normaler Stadtatmosphäre (München, Frankfurt) ist 18/8 Cr—Ni-Stahl ausreichend beständig, dagegen ist bei diesem Stahl in Industrieatmosphäre (Essen) eine regelmäßige Reinigung erforderlich. Besonders in verschmutzter Industrieatmosphäre macht sich eine glattere Oberfläche (mattpoliert oder elektropoliert) günstig bemerkbar.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19640151003
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  • 9
    Electronic Resource
    Electronic Resource
    Der Einfluß einzelner Parameter auf die Auslegung von DestillationskolonnenVortrag auf der Chisa '75 am 29. August 1975 in Prag. (1976)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 48 (1976), S. 727-727 
    Details
    ISSN: 0009-286X
    Keywords: Mehrkomponenten-Destillation ; NRTL-Parameter ; dreidiagonale Matrix ; Bodenmodell ; Bodenwirkungsgrad ; Bodendruckverlust ; Apparateauslegung ; Investitionskosten ; Amortisationszeit ; optimales Rücklaufverhältnis ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330480821
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  • 10
    Electronic Resource
    Electronic Resource
    Der Einfluß der Mischungsenthalpie auf die Auslegung von DestillationskolonnenVortrag auf dem Jahrestreffen der Verfahrens-Ingenieure, 29. Sept. bis 1. Okt. 1976 in Düsseldorf. (1977)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 49 (1977), S. 163-163 
    Details
    ISSN: 0009-286X
    Keywords: Destillationskolonnen-Berenchnung ; NRTL-Parameter ; Mischungsenthalpie ; dreidiagonale Matrix ; Stoffmengenänderung ; Wärmemengenänderung ; Konzentrationsänderung ; Durchmesseränderung ; Rücklaufverhältnis ; optimale Zulaufstufe ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330490220
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