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  • 1
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 10 (1953), S. 122-135 
    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: 1The chemical stabilization of wool by treating reduced wool with dihalogeno compounds (Harris-process) has been studied by preparative organic methods.2The bis-thioethers of cysteine, as postulated by Harris, have been prepared from l-cysteine and aliphatic α,ω-dihalogen compounds X—(CH2)n—X (n = 1-6) and are characterized by elementary analysis and paper hcromatography.3S,S′-Polymethylen-bis-cysteine derivatives have been isolated in good yields from reduced wool which has been previously treated with the cited dihalogen compounds. These were identical with the synthetic bisthioethers.4The course of reactions for the chemical modification of wool has now been verified by preparative chemical means as suggested by Harris in 1941.
    Notes: 1Die chemische Stabilisierung von Wolle durch Einwirkung bifunktioneller Halogen-derivate auf reduzierte Wolle (Harrisverfahren) wurde präparativ-chemisch studiert.2Die von Harris angenommenen Bisthioäther des Cysteins wurden aus l-Cystein und aliphatischen α,ω-Dihalogenverbindungen X—(CH2)n—X mit n = 1-6 dargestellt und durch Elementaranalyse und Papierchromatographie charaketerisiert.3Bei der präparativen Aufarbeitung von reduzierter und mit den genannten α,ω-Dihalogenverbindungen umgesetzter Wolle wurden S,S′-Polymethylenbiscysteine in guten Ausbeuten isoliert, welche mit den synthetischen Verbindungen identisch sind.4Der von Harris 1941 angegebene Reaktionsmechanismus für die chemische Modifizierung von Wolle konnte somit präparativ-chemisch bestätigt werden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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