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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 57 (1992), S. 4255-4262 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 11 (1980), S. 440-446 
    ISSN: 0933-5137
    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: Wear of Processing Equipment and Moulds by Filled and Reinforced PlasticsThe introduction of filled and reinforced plastics into the market increased the problem of wear during processing. It is estimated that in Germany wear based losses are up to 500 Millions DM per annum. Special test methods have been developed for systematic analysis of wear phaenomena. A considerable progress has been achieved in solving these problems in close contact to the concerning industry.
    Notes: Mit der Einführung gefüllter und verstärkter Kunststoffe haben die Verschleißprobleme bei der Verarbeitung zunehmend an Bedeutung gewonnen. Die durch Verschleiß verursachten Verluste in der Kunststoffindustrie werden in der Bundesrepublik Deutschland derzeit auf 500 Mill. DM pro Jahr geschätzt. Zur systematischen Untersuchung und zur Analyse der Verschleißerscheinungen wurden Modellprüfverfahren entwickelt. In enger Zusammenarbeit mit der Industrie konnten bereits beachtliche Erfolge bei der Minimierung der Verschleißschäden erzielt werden.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 623-629 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Imino-Oxygen Exchange Reactions Between Bis(iminophosphoranes)and DiketonesBis(iminophosphoranes) of the type Ph3P=N—[CH2]n —N=PPh3 (1a: n = 0; 1b: n = 2) react analogously to a Wittig reaction with 1,2-, 1,3-, and 1,4-diketones to give triphenylphosphine oxide and N-heterocycles. The formation of 2-oxoimidazolidine in high yields from 1,2-bis(triphenylphosphoranylideneamino)ethane (1b) and CO2 is described. The reaction path is discussed.
    Notes: Bis(iminophosphorane) vom Typ Ph3P=N—[CH2]n—N=PPh3 (1a: n = 0; 1b: n = 2) reagieren nach Art einer Wittig-Reaktion mit 1,2-, 1,3- und 1,4-Diketonen zu Triphenylphosphinoxid und N-Heterocyclen. Es wird ferner über die Umsetzung von 1,2-Bis(triphenyl-phosphoranylidenamino)äthan (1b) mit CO2 berichtet, die in guter Ausbeute 2-Oxoimidazolidin liefert. Der Reaktionsweg wird diskutiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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