1953
DOI: 10.1002/macp.1953.020100122
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Über cellulosetriacetylacetate und celluloseacetat‐acetylacetate

Abstract: i. Br. 387. Mitteilung uber makromolekulare Verbindungen2) Eingegangen am 19. Juni 1953 ZUSAMMENFASSUNG: E s wird die Darstellung von Cellulosetriacetylaceta ten und Celluloseacetat-Acetylacetaten mittels Diketen beschrieben und nachgewiesen, daD verschiedene Umsetzungen zwischen diesen Estern und Cellulosen polymeranalog verlaufen. Bei Verwendung von gutfraktionierten Celluloseacetaten und tfberfiihrungderselbenin Cellulose wurde dieK,-Konstante derletzterenneubeatimmt zu 4,2.10-4. RESUMB: On d6crit la pripar… Show more

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Cited by 12 publications
(3 citation statements)
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“…This indicates directly that molecular association of CT A dose not occur in these solvents. As early as 1953, Staudinger and Eicher 35 found by the membrane osmometry a fairly good coincidence of M" of a CDA (DS=2.37) sample in acetone with that in glacial acetic acid. After the measurement of M, for aCTA (DS=2.88) whole polymer in nitromethane, TCM, and acetone, Cowie and Ranson 21 concluded that neither degradation nor aggregation was apparent.…”
Section: Light Scatteringmentioning
confidence: 97%
“…This indicates directly that molecular association of CT A dose not occur in these solvents. As early as 1953, Staudinger and Eicher 35 found by the membrane osmometry a fairly good coincidence of M" of a CDA (DS=2.37) sample in acetone with that in glacial acetic acid. After the measurement of M, for aCTA (DS=2.88) whole polymer in nitromethane, TCM, and acetone, Cowie and Ranson 21 concluded that neither degradation nor aggregation was apparent.…”
Section: Light Scatteringmentioning
confidence: 97%
“…Its reactions with polysaccharides have been studied previously to a limited extent. Staudinger and co-workers 48 reported heterogeneous reaction of amorphous, regenerated cellulose with diketene in acetic acid using sodium acetate as catalyst. Elemental analysis results confirmed that they achieved a DS(AcAc) of 3.…”
Section: Synthetic Methodsmentioning
confidence: 99%
“…Recent research with C-14 labelled dimers (19,20), however, has shown that significant quantities of the dimer can in fact be extracted by organic solvents such as chloroform or tetrahydrofuran . The selection of alkyl ketene dimers as potential sizing agents for cellulose seems to be based on the work of Staudinger and Either in 1952 (21) in which the parent molecule of these dimers, diketene, was used to acetoacetylate cotton in glacial acetic acid using a sodium acetate catalyst (Figure 1) . Kirillova and Padchenko later extended this work to a range of conditions and catalysts (22) .…”
Section: Introductionmentioning
confidence: 99%