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  • Electronic Resource  (43)
  • 1985-1989  (16)
  • 1980-1984  (27)
  • 1970-1974
  • Polymer and Materials Science  (43)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 31 (1980), S. 165-168 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Styrene copolymers of unsaturated phosphonic acids are prepared by radical, or anionic copolymerization of styrene with esters of vinylphosphonic acid, allylphosphonic acid, 4-vinylbenzenephosphonic acid, and 2-(4-vinylphenyl)-ethanephosphonic acid, followed by cleavage of the ester groups.
    Notes: Styrencopolymere ungesättigter Phosphonsäuren werden durch radikalische bzw. anionische Copolymerisation von Styren mit Estern der Vinylphosphonsäure, Allylphosphonsäure, 4-Vinyl-benzenphosphonsäure und 2-(4-Vinylphenyl)ethanphosphonsäure und nachfolgende Abspaltung der Estergruppen hergestellt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 31 (1980), S. 111-117 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Chlorinated polypropylenes with a chlorine content between 3 and 72.3% by wt. as well as chlorosulfonated polypropylenes with a chlorine content between 3 and 54.4% by wt. and a sulfur content between 1.2 and 5.9% by wt. are prepared by means of chlorination and chlorosulfonation of atactic polypropylene in solution. The influence of substitution von molecular weight, intrinsic viscosity, glass transition temperature as well as dynamic-mechanical behaviour and thermal short-time behaviour of the polymers is investigated.
    Notes: Durch Chlorierung und Sulfochlorierung von ataktischem Polypropylen in Lösung werden gezielt chlorierte Polypropylene mit 3 bis 72,3 Masse-% Chlor und einem Schwefelgehalt von 1,2 bis 5,9 Masse-% dargestellt. Es wird der Einfluß der Substitution auf die rel. Molekülmasse, Grenzviskosität und Glasübergangstemperatur sowie das dynamisch-mechanische Verhalten und das thermische Kurzzeitverhalten der Polymere untersucht.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 640-643 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Using the managers(IV)-method methyl methacrylate was grafted onto potato starch and dextran as well as 1-acryloyl-3-methylpyrazole and 1-methacryloyl-3,5-dimethyl-pyrazole onto potato starch. The graft copolymerization of potato starch with methyl methacrylate was investigated with respect to the influences of the acid concentration, the solvent composition, the presence of permanganate, and the gelatinization of starch.
    Notes: Nach der Mangan(IV)-Methode wurden Methylmethacrylat auf Kartoffelsärke und Dextran sowie 1-Acryloyl-3-methyl-pyrazol und 1-Methacryloyl-3,5-dimethyl-pyrazol auf Kartoffelstärke gepfropft. Für die Pfropcopolymerisation von Kartoffelstärke mit Methylmethacrylat wurde der Einfluß der Säurekonzentration, der Lösungsmittelzu sammensetzung, der Anwesenheit von Permanganat und der Gelatinierung der Stärke untersucht.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Polymer bound microbiocides are prepared by 4-dimethylaminopyridine catalyzed acylation of cellulose and cellulose dibenzylether with the thio acid chloride obtained from 3-methyl-pyrazole and thiophosgene. The hydrolytic release of the bioactive compound is controlled primarily by the hydrophilicity of the polymer support and the state of swelling and dissolution of the polymer-biocide-combination and its change during hydrolysis.
    Notes: Polymergebundene Mikrobiocide werden durch Acylierung von Cellulose und Cellulosedibenzylether mit dem aus 3-Methyl-pyrazol und Thiophosgen erhältlichen Thiocarbonsäurechlorid unter Katalyse mit 4-Dimethylamino-pyridin hergestellt. Die hydrolytische Wirkstoffreisetzung wird primär über die Hydrophilie der Trägerpolymere sowie den Quellungs- bzw. Lösungszustand der Polymer-Wirkstoff-Kombination und seine Änderung während der Hydrolyse gesteurt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 31 (1980), S. 17-20 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Polymeric derivatives of paraoxone and parathione are prepared by esterification of poly vinylalcohol and vinylalcoholvinylpalmitate copolymers with O-ethyl O-4-nitrophenyl chlorophosphate, resp. O-ethyl O-4-nitrophenyl chlorothiophosphate.
    Notes: Polymere Analoga des Paraoxons und Parathions werden durch Veresterung von Polyvinylalkohol und Vinylalkohol-Vinylpalmitat-Copolymeren mit Phosphorsäure- bzw. Thiophosphorsäure-ethylester-4-nitro-phenylester-chlorid in Dimethylformamid/Pyridin dargestellt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The procedure of the quantitative microstructure analysis from the 13C{1H}-PFT-NMR spectra of a series of chlorinated atactic polypropylene samples is described. Intensity correction factors are derived. Following microstructure parameters are obtained from the assigned and corrected resonance intensities (areas): total degree of chlorination ασ per monomeric unit.mole fractions of all initial and derived (chlorinated) groups.degrees of chlorination α(CH), α(CH2), α(CH3) of the different groups,ratio of the averaged chlorination probabilities p̄(CH): p̄(CH2): p̄(CH3) of the (C—H)-bonds in the groups considered, which is a measure of the mean relative reactivity of the (C—H)-bonds in these groups.Additionally the mole fraction of (—CHCl2)-groups can be tested by combination of the obtained 13C-NMR-results with 1H-NMR measurements.
    Notes: Die Methodik der quantitativen Mikrostrukturanalyse aus den 13C—{1H}—PFT-NMR-Spektren einer Serie von chlorierten ataktischen Polypropylenproben wird beschrieben. Intensitätskorrekturfaktoren werden abgeleitet. Aus den zugeordneten, korrigierten Resonanzintensitäten (Flächenauswertung) lassen sich folgende Mikrostrukturparameter quantitativ bestimmen: der summarische Chlorierungsgrad ασ pro Monomereinheit,die Molanteile aller unchlorierten (Ausgangs-) und chlorierten Gruppen,die Gruppenchlorierungsgrade α(CH), α(CH2), α(CH3),das Verhältnis der mittleren Chlorierungswahrscheinlichkeiten der (C—H)-Bindungen in den Gruppen p̄(CH) : p̄(CH2) : p̄(CH3), das ein Maß für die mittlere relative Reaktivität der (C—H)-Bindungen in den Gruppen darstellt.Zusätzlich kann durch 1H-NMR-Messungen in Kombination mit den erhaltenen 13C-NMR-Ergebnissen der Molanteil der (CHCl2)-Gruppen überprüft werden.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 31 (1980), S. 700-703 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Styrene copolymers of unsaturated phosphonic acids dissolved in toluene were found to associate. Introducing phosphonic acid groups into the polymers results in a distinct increase of the second order transition temperature. This is suggested to be caused by hydrogen bonds and formation of pyrophosphonic acid groups.
    Notes: Styrencopolymere ungesättigter Phosphonsäuren liegen in Toluen assoziiert vor. Die Einführung von Phosphonsäuregruppen in die Polymere bewirkt eine ausgeprägte Erhöhung der Glasüberganstemperature. Als Ursache dieser Erhöhung werden das Auftreten von Wasserstoffbrückenbindungen und die Ausbildung von Pyrophosphonsäuregruppen diskutiert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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