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  • 1
    Electronic Resource
    Electronic Resource
    Strain-induced crystallization, Part IV: Induction time analysis (1979)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 19 (1979), S. 401-405 
    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: The empirical equation, 1/ti = AeEi/RT, which expresses the exponential dependence of the reciprocal of crystallization induction time, ti, has been analyzed and shown to be equivalent to the nucleation rate equations derived earlier in Part III (1). Consequently we have used the ti measurements obtained earlier by Krueger and Yeh to calculate not only the nucleation rate enhancements but also the melting point elevations, the relative crystal thickness changes and molecular coil extension ratios of shear-crystallization polyethylene. It is shown that polyethylene when crystallized between 129 and 131°C at shear rates between 1.56 and 9.70 sec-1 can have melting point increases of 4.2 to 7.2°C and crystal thickness decreases of 20 to 25 percent, when compared to those crystallized at 130°C in the quiescent state. The predicted “coil” extension in the melt just prior to shear-induced crystallization ranges between 21 and 36 percent. The results of these analyses as well as those on nucleation rates of polyethylene oxide are discussed in detail.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760190606
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  • 2
    Electronic Resource
    Electronic Resource
    N-(morpholinothio)imides as curing agents in semiefficient vulcanization systems (1977)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 21 (1977), S. 1731-1742 
    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: Semiefficient vulcanization systems (semi-EV) are often used when a stock requires good aging properties as well as good fatigue resistance. A partial replacement of sulfur in a conventional cure system with 4,4′-dithiobismorpholine or 2-mercaptabenzothiazyl 4-morpholino disulfide (BMD) is an example of semi-EV system. However, with BMD the scorch time is not always long enough for multisteps involved in the manufacturing of tires. Such new cure retarders as N-(cyclohexylthio)phalimide or N, N′-bis(cyclohexylthio)oxanilide showed very little efficiency in BMD cure systems. This paper describes the usage of new curing agents, (N-morpholinothio)imides, which can overcome the disadvantage of scorchness in BMD cure system and provide excellent aging properties. This is rationalized by the formation of BMD during vulcanization. The facile formation of BMD from N-(4-morpholinothio)phthalimide (MTP) and 2-mercaptobenzothiazole (MBT) serves to illustrate the feasibility of in situ formation of BMD during cure and to explain long scorch time observed with N-(4-morpholinothio)imides.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1977.070210701
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  • 3
    Electronic Resource
    Electronic Resource
    Die Reaktion von 2,4-Pentandion mit C6H5PCI2-Komplexen:Acetylaceton als Dien-Diol-Ligand (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 3637-3643 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of 2,4-Pentanedione with C6H5PCI2 complexes: Acetylacetone as Diene Diol LigandReaction of dichlorophenylphosphane complexes with acetylacetone results in substitution of the chlorine functions by the oxygen of the enolized dione. One or both chlorine substituents may be replaced by an acetylacetonate group (4-5). In addition, under appropriate conditions, 1,3,2- dioxaphosphorine systems (2-6) are formed in which both chlorine functions are substituted by the oxygen atoms of one acetylacetone moiety bonded in its diene diol form. Examples of the new reactions are given for (CO)5Cr- and (CO)5W-dichlorophenylphosphane complexes. For 2,4 the constitution is exemplified by x-ray analyses.
    Notes: Dichlorphenylphosphan-Komplexe reagieren mit Acetylaceton unter Subsititution der Halogenfunktionen durch den Sauerstoff des enolisierten Dions. Dabei Können zwei Chlorsubstituenten durch je einen Acetylacetonat-Rest ersetzt werden (4,5). Unter geeigneten Bedingungen entstehen darüber hinaus 1,3,2-Dioxaphosphorin-Systems (2,6), in welchen beide Chlorfunktionen durch die Sauerstoffatome eines in der Dien-Diol-Form gebundenen Acetylacetonrestes substituiert sind. Diese neuen Reaktionen werden am Beispiel von (CO)5Cr - und (CO)5W-Derivaten des C6H5PCI2 vorgestellt. An 2 und 4 wird die Konstitution durch Röntgenstrukturanalysen examplarisch belegt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791121113
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  • 4
    Electronic Resource
    Electronic Resource
    Linear Oligosiloxanes with Bis-(Trimethylsilyl-)amine Chain-terminating Groups (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 338 (1965), S. 113-120 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α,ω;-Dihalogeno-oligosiloxane reagieren mit Natrium-bis-trimethylsilylamid unter Bildung von α-Bis-trimethylsilylamino-ω-halogenosiloxan. Diese geben bei der Hydrolyse die entsprechenden Silanole bzw. Siloxane, bei der Ammonolyse Silylamine bzw. Disilazane. Die Struktur der Verbindungen wurde durch 1H-NMR- und IR-Spektren bestätigt.
    Notes: α,ω-Di-halogeno-oligosiloxanes react with sodium-bis-(trimethylsilyl-)amide to form α-bis-(trimethylsilyl-)amino-ω-halogeno-oligosiloxanes. These new compounds may be hydrolyzed to the corresponding bis-silylamino-substituted silanols or resulting disiloxanes; ammonolyses yield the corresponding silylamines or disilazanes. The structure of the prepared compounds was proved by 1H-NMR and IR spectra.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653380302
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  • 5
    Electronic Resource
    Electronic Resource
    Über Anhydride von Kieselsäure und Methyltrisilanol mit Schwefelsäure und deren Polymerisationsvermögen (1968)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 360 (1968), S. 70-76 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The interaction of SiCl4 or SiBr4 with excess Ag2SO4 in acetonitrile at -40°C yields, besides silver halide, silver tetrasulphatosilicate, Si(OSO3Ag)4, which at room temperature decomposes into Ag2S2O7 and polymeric Two moles of Ag2SO4 react with SiCl4 to form the easily polymerisable Si(SO4)2, giving with further Ag2SO4 compounds with ≡SiOSO3Ag groups.Methyltrichlorosilane, CH3SiCl3, yields with Ag2SO4 CH3Si(OSO3Ag)3 which is thermally converted to Ag2S2O7 and methylsilsesquioxan, (CH3SiO1,5)n.
    Notes: Bei der schnell verlaufenden Reaktion von SiCl4 oder SiBr4 mit Ag2SO4 in Acetonitril bei -40°C entsteht bei Überschuß von Ag2SO4 neben Silberhalogenid Silbertetrasulfatosilicat Si(OSO3Ag)4, das bei Erwärmen unter Bildung von Ag2S2O7 zu polymerem umgesetzt wird.2 Mol Ag2SO4 reagieren mit SiCl4 zu leicht polymerisierendem Si(SO4)2, das beim Behandeln mit Ag2SO4 in Verbindungen mit (≡SiOSO3Ag)-Gruppen übergeht.Methyltrichlorsilan CH3SiCl3 reagiert mit Ag2SO4 zu CH3Si(OSO3Ag)3, das sich beim Erwärmen zu Ag2S2O7 und Methylsilsesquioxan (CH3SiO1,5)n umsetzt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19683600110
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen der übergangsmetalle. XXV [1]. Darstellung und Eigenschaften des [Ti(CH2CN)4 · 2 THF]n (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 437 (1977), S. 210-212 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XXV. Preparation and Properties of [Ti(CH2CN)4 · 2 THF]nTetracyanomethyl titanium, [Ti(CH2CN)4 · 2 THF]n, can be prepared by reaction of TiCl4 with LiCH2CN in form of a tetrahydrofuran complex. The brown, stable compound, which seems to be a coordination polymer, was characterized by i.r. and 1H-n.m.r. spectra.
    Notes: Tetracyanmethyltitan läßt sich durch Reaktion von Titan(IV)-chlorid mit Cyanmethyllithium als braune, thermisch recht beständige, offensichtlich koordinationspolymere Verbindung der Formel [Ti(CH2CN)4 · 2 THF]n gewinnen. Eine nähere Charakterisierung erfolgte mittels des IR- und des 1H-NMR-Spektrums.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774370130
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  • 7
    Electronic Resource
    Electronic Resource
    Chemische Untersuchungen von Silicaten. XXXII. Untersuchungen im System BaO—SiO2—H2O (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 340 (1965), S. 277-293 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By addition of barium chloride solutions to sodium silicate solutions, amorphous barium silicates are precipitated. The transformation of these amorphous to various crystalline barium silicates is a function of the Na:Si ratios and concentrations of the sodium silicate solutions, the Ba:Si ratios, the temperatures during precipitation and, to some extent, of the time during which these temperatures are maintained.From sodium silicate solutions with Na:Si ratios from 0.75 to 2 and [Si] concentrations ≤ 1 m and barium silicate solutions with Ba:Si ratios from 0.8 to 1.2, the following crystalline barium silicates are precipitated at temperatures from 20° to 100°C: BaO · SiO2 · 6H2O (monosilicate), BaO · SiO2 · H2O (monosilicate), BaO · SiO2 · 1.5 H2O (probably a disilicate), 0.67 BaO · SiO2 = Ba2Si3O8 (high polymer silicate).Their mutual relations are described and their probable structures discussed.
    Notes: Bei Zusatz von Bariumchlorid- zu Natriumsilicatlösungen entstehen amorphe Bariumsilicatfällungen. Aus ihnen entstehen in Abhängigkeit von dem (Na:Si)-Verhältnis der angewandte Silicatlösungen, deren Konzentrationen, den im Verhältnis zum Si angewandten Mengen an BaCl2, den Fällungstemperaturen und teilweise auch der Zeitdauer der Temperatureinwirkung verschiedene kristallisierte Bariumsilicate.Aus Silicatlösungen mit (Na:Si) = 0,75 bis 2, und [Si]-Konzentrationen ≤ 1 m wurden, wenn man mit 0,8 bis 1,2 Ba pro Si fällt, bei Temperaturen von 20° bis 100°C folgende kristalline Phasen erhalten: BaO · SiO2 · 6 H2O (BSH6) und BaO · SiO2 · H2O (BSH II), beides Monosilicate, BaO · SiO2 · 1,5 H2O (BSH I) höchstwahrscheinlich ein Disilicat und 0,67 BaO · SiO2 = Ba2Si3O8 ein hochpolymeres Silicat.Ihre gegenseitigen Beziehungen werden beschrieben und ihre möglichen Strukturen diskutiert.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653400507
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  • 8
    Electronic Resource
    Electronic Resource
    Über das Silberdisulfat Ag2S2O7 und sein Acetonitrilsolvat Ag2S2O7 · 6CH3CN (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 355 (1967), S. 83-87 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Some properties of Ag2S2O7 and Ag2S2O7 · 6 CH3CN are described.
    Notes: Einige Eigenschaften des Ag2S2O7 und des Ag2S2O7 · 6 CH3CN werden beschrieben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673550111
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  • 9
    Electronic Resource
    Electronic Resource
    Dijodo- und Dibromometallazide X2MN3 von Aluminium und Gallium (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 444 (1978), S. 71-76 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Diiodo- and Dibromometal Azides X2MN3 of Aluminium and GalliumAluminium and gallium triiodide react in benzene with iodine azide yielding the diiodometal azides I2MN3 (M = Al, Ga). With liquid bromine the dibromometal azides can be obtained. Boron triiodide reacts similar with iodine azide, however, the resulting I2BN3 can not be obtained in a pure condition. Some properties and the i.r. spectra of the azides were recorded and assigned.
    Notes: Aluminium- und Galliumtrijodid reagieren in Benzol mit Jodazid unter Bildung der Dijodometallazide J2MN3 (M = Al, Ga). Mit flüssigem Brom lassen sie sich in die Dibromometallazide Br2MN3 umwandeln. Bortrijodid reagiert ähnlich mit Jodazid, jedoch läßt sich das entstehende J2BN3 wegen seiner Zersetzlichkeit nicht in reiner Form erhalten. Einige Eigenschaften und die IR-Spektren der Azide werden mitgeteilt und zugeordnet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784440107
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  • 10
    Electronic Resource
    Electronic Resource
    Prussiatkomplexe mit Triphenylphosphin, -arsin und -stibin als LigandenProfessor Walter Hieber zum 70. Geburtstage am 18. Dezember 1965 gewidmet (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 341 (1965), S. 189-195 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The preparation and the properties of the complexes Na3[Fe(CN)5 · X(C6H5)3] and Na2[Fe(CN)5 · X(C6H5)3] (X = P, As, Sb) are described. The results of magnetic measurements, IR- and Mössbauer spectra are discussed.
    Notes: Durch Umsetzung von Na3[Fe(CN)5NH3] mit den tertiären Phosphinen, Arsinen und Stibinen X(C6H5)3 (X = P, As, Sb) wurden die gelben diamagnetischen Prussiate Na3[Fe(CN)5 · X(C6H5)3] erstmals dargestellt. Durch Oxydation mit Brom konnten hieraus die paramagnetischen grünvioletten Eisen(III)-Komplexe Na2[Fe(CN)5 · X(C6H5)3] erhalten werden. Die Bindungsverhältnisse in diesen Komplexen werden an Hand magnetischer Messungen sowie ihrer IR- und Mössbauer-Spektren diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653410309
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