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  • 1
    Electronic Resource
    Electronic Resource
    Relationship between the Freundlich adsorption constants K and 1/N hydrophobic adsorption (1982)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 6452-6453 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00387a052
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  • 2
    Electronic Resource
    Electronic Resource
    Reactions of 2,2'- Dithiobis(2-methylpropionaldehyde) (1970)
    s.l. : American Chemical Society
    Macromolecules 3 (1970), S. 5-9 
    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/ma60013a002
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  • 3
    Electronic Resource
    Electronic Resource
    Polyester and Polyurethanes from γ,γ-Dimethyl-δ-valerolactone (1974)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 13 (1974), S. 193-197 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i360051a008
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  • 4
    Electronic Resource
    Electronic Resource
    Polyamide and copolyamides derived from 1-methylpyrrolidine-2,5-di-β-propionic acid. Studies of synthetic polymer derived from levulinic acid (1960)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 36 (1960), S. 178-189 
    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: Aus Lävulinsäure und Furfurol als Ausgangsmaterial wurde in vier Stufen Diäthyl-1-methylpyrrolidin-2,5-di-β-propionat hergestellt.Durch Kondensation dieser Ester mit Hexamethylendiamin und/oder mit Hexamethylendiamin und Diäthyl-adipat, -azelat oder -sebacat wurden Homopolyamide und Copolyamide hergestellt. Ihre Darstellung und ihre Eigenschaften, wie Faserbildungsvermögen, Schmelzpunkte und Löslichkeiten, werden beschrieben.Einige Copolyamide wurden durch Schmelzspinnen in Fasern verwandelt, und der Einfluß der basischen Pyrrolidingruppe in der Kette auf die Eigenschaften der Fasern, besonders hinsichtlich der Anfärbbarkeit, wurde untersucht.
    Notes: Diethyl 1-methylpyrrolidine-2,5-di-β-propionate was prepared from levulinic acid and furfural as starting material through four steps.This ester was condensed with hexamethylene diamine to the homopolyamide and/or condensed with hexamethylene diamine and diethyl adipate, azelate or sebacate to the copolyamides. Their preparation and properties, such as fiber-forming properties, melting points, and solubilities, are described.Some copolyamides were converted to fibers by a melt-spinning process and the effect of the basic pyrrolidine group inserted in polymer chain on the fiber properties, especially on the dyeing properties, were studied.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1960.020360120
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  • 5
    Electronic Resource
    Electronic Resource
    Polyamide-urethans from ω-chlorocarbonyloxycarboxylic acid chlorides and diamines (1966)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 90 (1966), S. 198-206 
    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: ε-Chlorcarbonyloxycaproylchlorid (I) und γ-Chlorcarbonyloxybutyrylchlorid (II) wurden durch Behandeln von ε-Hydroxycapronsäure oder des Natriumsalzes von γ-Hydroxybuttersäure mit Phosgen und darauffolgend mit Thionylchlorid erhalten. Die Verbindungen I und II gaben mit verschiedenen Diaminen auf dem Wege der Polykondensation Polyamidurethane. Die Polymeren besaßen hohes Molekulargewicht und gaben aus Lösungen durchsichtige, zähe Filme.
    Notes: ε-Chlorocarbonyloxycaproyl chloride(I) and γ-chlorocarbonyloxybutyroyl chloride(II) were prepared by treating ε-hydroxycaproic acid or sodium γ-hydroxybutyrate with phosgene and thionyl chloride successively. I and II were subjected to polycondensation with various diamines to form polyamide-urethans. The polymers had high molecular weights and gave transparent tough films by solution casting.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1966.020900119
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  • 6
    Electronic Resource
    Electronic Resource
    Oligourethan dimers having asymmetric carbon atoms in the main chain. Oligourethans. V1 (1967)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 104 (1967), S. 46-55 
    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: Eine Reihe von Diurethanen mit asymmetrischem C-Atom in der Hauptkette wurde durch Umsetzung von 1-Alkyl-2-acetoxy-äthylisocyanat mit Methyl-l-alkyl-2-hydroxyäthylurethan hergestellt; ihre Schmelzpunkte, optische Aktivität und RF-Werte wurden bestimmt. Die hergestellten Dimeren besitzen die Struktur mit R und R' = H-, Methyl-(L und DL-Formen), iso-Propyl-(L und DL), iso-Butyl-(L und DL) oder Benzylgruppen (L). Es wurden Beziehungen zwischen der Struktur und der optischen Aktivität bzw. dem RF-Wert gefunden.
    Notes: A series of oligourethan dimers having asymmetric carbon atoms in the main chain was prepared by the reaction between 1-alkyl-2-acetoxyethyl isocyanates and methyl l-alkyl-2-hydroxyethylcarbamates; their melting points, rotatory powers and RF-values were determined. The dimers prepared are represented by a general formula, where R and R' are H, methyl (L and DL-forms), i-propyl (L and DL), i-butyl (L and DL) or benzyl (L) groups. Certain relationships have been found between the structure and rotatory power resp. RF-value.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1967.021040106
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  • 7
    Electronic Resource
    Electronic Resource
    Polycondensation-addition. V. Polyurethan-ureas with asymmetric carbon atoms in the main chain from L- and DL-2-alkyl-2-isocyanatoethyl chloroformates and diamines1 (1967)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 104 (1967), S. 56-65 
    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: L- und DL-Chlorameisensäure-[2-alkyl-2-isocyanat-äthyl]-ester wurden aus den entsprechenden Aminoalkoholen durch Umsetzung mit Phosgen hergestellt. Diese optisch aktiven oder racemischen bifunktionellen Verbindungen bilden mit verschiedenen Diaminen durch Polyaddition hochmolekulare Polyurethan-harnstoffe, die längs der Hauptkette asymmetrische Kohlenstoffatome enthalten. Die optisch aktiven Polyurethan-harnstoffe haben einen etwas höheren Schmelzpunkt als entsprechende racemische Polymere.
    Notes: L- and DL-2-Alkyl-2-isocyanatoethyl chloroformates were synthesized by the phosgenation of the corresponding amino alcohols. These optically active or racemic difunctional compounds were submitted to polycondensation-addition with various diamines to form high molecular weight polyurethan-ureas having asymmetric carbon atoms along the main chain. The optically active polyurethan-ureas obtained had slightly higher melting points than the corresponding racemic polymers.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1967.021040107
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  • 8
    Electronic Resource
    Electronic Resource
    Polycondensation-addition. VI. Optically active polyurethan-ureas (1967)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 110 (1967), S. 84-89 
    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: Optisch aktive hochmolekulare Polyurethanharnstoffe wurden aus optisch aktiven Chlorameisensäure-[2-alkyl-2-isocyanat-äthyl]-estern und optisch aktiven Diaminen durch Grenzflächenpolymerisation erhalten.Es warden keine besonders hervortretenden Unterschiede zwischen den Eigenschaften der optisch aktiven Polyurethanharnstoffe, wie Schmelzpunkt und Kristallinität. und denen der entsprechenden racemischen Polymeren beobachtet. Die optische Rotationsdispersion der Polymeren in verschiedenen Lösungsmitteln gehorcht der eintermigen DRUDE-Gleichung.
    Notes: High molecular weight of optically active polyurethan-ureas were prepared from optically active 2-alkyl-2-isocyanatoethyl chloroformates and optically active diamines by interfacial polycondensation-addition.No dramatic differences in solid properties such as polymer melt temperature and crystallinity were observed between the optically active polyurethan-ureas and the corresponding racemic polymers. The optical rotatory dispersions of the polymers in various solvents simply obeyed the one-term DRUDE equation.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1967.021100109
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  • 9
    Electronic Resource
    Electronic Resource
    Polycondensation-addition I. Polyamide-ureas from isocyanatocarboxylic acid chlorides and diamines (1965)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 86 (1965), S. 64-72 
    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: ∊-Isocyanato-caproylchlorid, β-Isocyanato-propionylchlorid, Isocyanato-acetylchlorid und p-Isocyanato-benzoylchlorid wurden aus den entsprechenden Aminosäuren durch Reaktion mit Phosgen und Chlorwasserstoff hergestellt. Die Isocyanatocarbonsäurechloride besitzen zwei verschiedene hochreaktive Funktionen, die Isocyanat- und die Chlorcarbonylgruppe, und führen durch Polyadditionskondensation mit Diaminen zu Polyamidharnstoffen. Die Polyamidharnstoffe sind hochmolekulare, filmbildende Polymere mit Ausnahme der mit Isocyanatoacetylchlorid hergestellten Produkte.
    Notes: ∊-Isocyanatocaproyl chloride, β-isocyanatopropionyl chloride, isocyanatoacetyl chloride, and p-isocyanatobenzoyl chloride were prepared from the corresponding amino acids by reaction with phosgene and hydrogen cloride. The isocyanatocarboxylic acid chlorides have two different highly reactive functions, isocyanato- and chlorocarbonyl groups, and gave polyamide-ureas by polycondensation-addition with diamines. The polyamide-ureas obtained were high molecular, film-forming polymers, except those derived from isocyanatoacetyl chloride.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1965.020860106
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  • 10
    Electronic Resource
    Electronic Resource
    Preliminary syntheses of oligo-1-isobutylethyleneurethans and oligo-1-benzylethyleneurethans. Oligourethan IV (1966)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 93 (1966), S. 274-279 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1966.020930122
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