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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 18 (1974), S. 3445-3454 
    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: Epoxy acrylates such as bisphenol type (I-A), propylene glycol type (II-A), and phthalic acid ester type (III-A) were prepared from addition reaction between each epoxy resin and acrylic acid. These reactions were carried out in the absence of solvent and in the presence of quaternary ammonium salt. The rate of addition reaction between glycidyl ether-type epoxide and acrylic acid obeyed first order. The rates of addition reaction between glycidyl ester-type epoxide and acrylic acid obeyed first order at 80°C, but obeyed second order rather than first order at 90°C and above. The rates of photocrosslinking of epoxy acrylates were measured by IR spectrophotometry. Epoxy acrylates with benzoin ethyl ether (1 wt-%) were irradiated with a high-pressure mercury lamp in oxygen-free atmosphere. The rates of photocrosslinking of epoxy acrylates II-A, III-A, and I-A decrease in that order.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 2
    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: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 3
    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: Kationische Polymerisationen von Vinyloxyäthylacrylat (VEA), katalysiert durch den Bortrifluorid-Äther-Komplex, wurden in Toluol bei 10, -10 und -30°C durchgeführt. In diesem System gibt es eine kritische Katalysatorkonzentration (Co), unterhalb derer die Polymerisation von VEA nicht initiiert werden kann.Für die Geschwindigkeit der Polymerisation wurde folgende Gl. gefunden: -d[M]/dt=kp(C*)·[M]a, und für a die Werte 0,44 bei 10°C; 0,51 bei -10°C und 0,63 bei -30°C.Aus diesen Ergebnissen wurde geschlossen, daß die Polymerisationsgeschwindigkeit von VEA proportional ist zur 1. Potenz der Katalysatorkonzentration und zu einer Potenz von 0,44-0,63 der Monomerkonzentration zwischen 10 und -30°C.Außerdem konnte festgestellt werden, daß zunehmende Monomerkonzentration zur Abnahme des Polymerisationsgrades führt.
    Notes: Cationic polymerizations of vinyloxyethyl acrylate (VEA) catalyzed by boron trifluorideether complex were carried out in toluene at 10, -10, and -30°C. In this system, a critical catalyst concentration (C0) exists; when the catalyst concentration is below this concentration, the polymerization of VEA cannot be initiated. The rate of polymerization is expressed as -d[M]/dt=kp(C*)·[M]a, where a was found to be 0,44 (at 10°C), 0.51 (at -10°C), and 0,63 (at -30°C), respectively.From these results, it is concluded that the rate of polymerization of VEA is proportional to the first power of catalyst concentration and to 0,44-0,63 power of monomer concentration between 10 and -30°C, respectively.Furthermore, it is recognized that an increasing monomer concentration tends to decrease the degree of polymerization.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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