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  • 1
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. XIII.Part XII: D. A. Bansleben and O. Vogl, J. Polymer Science, Polymer Chem. Ed., in press. Copolymers of trioxane with the epoxide and 1,3-dioxolane of methyl 10-undecenoate (1984)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 22 (1984), S. 3263-3288 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cationic copolymerization of 1,3,5-trioxane with methyl 10,11-epoxyundecanoate or methyl 7,8-epoxyoctanoate and terpolymerization with 1,3-dioxolane was successfully carried out. Co-and terpolymerization of 1,3,5-trioxane with 4-(1-carbomethoxynonyl)-1,3-dioxolane was also achieved. Feed compositions of the functional comonomers were varied from 5 to 40 mol %; in all cases the isolated copolymers contained less than 5% of the functional mer units. The composition of the copolymers showed that the methyl ω-epoxyalkanoates were much less reactive than 1,3,5-trioxane. A similar trend was observed with the functional dioxolane monomer, although significantly shorter induction periods were observed in comparison with the epoxy/trioxane copolymerizations. The oxymethylene copolymers and terpolymers were characterized primarily by their infrared spectra; however, the thermal and base stabilities of selected copolymers were also determined.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1984.170221143
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  • 2
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. XII. Hydrolysis of polymers and copolymers of methyl 10,11-epoxyundecanoatePart XI: D. A. Bansleben and O. Vogl, J. Polym. Sci. Polym. Chem. Ed., 23, 675 (1985). (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 703-721 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ester-substituted oxyethylene polymers and copolymers of methyl 10,11-epoxyundecanoate were prepared with an aluminumalkyl-water coordination initiator system modified with acetylacetone. Poly(ethylene oxide) ionomers, polyelectrolytes, and polycarboxylic acids were obtained by alkaline hydrolysis of the pendant carbomethoxy groups and by neutralizations with acetic acid. The high molecular weight substituted poly(ethylene oxide)s were characterized by spectral, thermal, and dilute solution measurements. The infrared spectra of carboxylate substituted poly(ethylene oxide)s, both homo- and copolymers, show the typical shifts in the carboxyl absorption when going from the ester to the carboxylate group to the free acid. Polymer transitions temperatures, as measured by DSC, changed accordingly. Wide-angle x-ray diffraction measurements strongly suggest the existence of ionic domains in the oxyethylene polymer matrix. Dilute solution properties of the ionomers show typical polyelectrolyte behavior, including a substantial change in viscosity when ionic solute is added.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230308
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  • 3
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. VII.Part VI: O. Vogl, P. Loeffler, D. Bansleben, and J. Muggee, in Coordination Polymerization, C. C. Price and E. J. Vandenberg, Eds., Polymer Science and Technology, Vol. 19, 1983, p. 95. Use of triethylaluminum/water/acetylacetone (1.0:0.5:1.0) for the polymerization of oxiranes (1984)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 22 (1984), S. 2489-2500 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polymerization studies of oxiranes were conducted using a modified aluminumalkyl initiator, derived from the low-temperature reaction by chelating agents (5°C) and hydrolysis products of triethylaluminum. The stoichiometric reaction product of acetylacetone and triethylaluminum, after partial hydrolysis with water, gave a homogeneous initiator that polymerized the oxides of ethylene, propylene, 1-butene, 1-hexene, 3-chloro-1-propene, and 4,4,4-trichloro-1-butene to the corresponding high molecular weight poly(alkylene oxides). The initiator, similar in nominal composition to the classical trialkylaluminum/water/acetylacetone (1.0/0.5/1.0) initiator developed by Vandenberg, retained a high level of activity, when properly stored, for nearly 4 weeks. The composition was inactive when the sequence of chelation and hydrolysis was reversed. Inclusion of a proton-trapping agent in polymerization experiments of propylene oxide provided evidence that protons do not play a role in the initiation of oxirane polymerizations with modified organoaluminum oxides. Characterization of the various alkylene oxide polymers was carried out by spectroscopic, solution, and thermal techniques.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1984.170221017
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  • 4
    Electronic Resource
    Electronic Resource
    Poly(alkylene oxide) ionomers. XI. Polymerization and copolymerization of methyl ω-epoxyundecanoate and characterization of the polymersPart X: J. Muggee and O. Vogl, J. Polym. Sci. Polym. Chem. Ed., 23, 651 (1985). (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 673-701 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Methyl 10-undecenoate was epoxidized in nearly quantitative yield with m-chloroperoxy-benzoic acid to methyl 10,11-epoxyundecanoate. The functional epoxide monomer was polymerized by the reaction product of triethylaluminum/water/acetylacetone (1.0/0.5/1.0) to a high molecular weight elastomer having pendent carboxyl groups, and a molecular weight distribution near the most probable distribution. With the same initiator system, methyl 10,11-epoxyundecanoate was copolymerized with ethylene oxide, propylene oxide, 1-butene oxide, 1-hexene oxide, phenyl glycidyl ether, epichlorohydrin, and 4,4,4-trichloro-1-butene oxide. The copolymers were typically high in molecular weight, elastomeric, and had methyl 10,11-epoxyundecanoate incorporations similar to the initial feed ratio of comonomers. The new family of functional polymers were characterized by their infrared and NMR spectra, dilute solution viscosity and thermal transitions.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230307
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  • 5
    Electronic Resource
    Electronic Resource
    Biodegradable polymers: Chymotrypsin degradation of a low molecular weight poly(ester-urea) containing phenylalanine (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 23 (1979), S. 429-437 
    Details
    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: A low molecular weight poly(ester urea), poly(L-phenylalanine/ethylene glycol/1,6-diisocyanatohexane), and a model diester diurea, dimethyldiphenylalaninehexamethylenediruea, were synthesized and found to be hydrolyzed by α-chymotrypsin solutions at pH 7.8. After ten-day exposure to 0.1 mg/ml enzyme solution at room temperature, 79.9% weight loss was observed for the model diester diurea (containing two ester linkages per molecule). A weight loss of 19.4% was observed for the poly(ester urea) of M̄n 1930 (containing an average of eight ester linkages per molecule) after the same period of exposure. A poly(ester urea) of similar molecular weight, but derived from glycine instead of phenylalanine, was found to resist chymotrypsin hydrolysis.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1979.070230212
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  • 6
    Electronic Resource
    Electronic Resource
    Functional polymers. XLVII. Synthesis of various derivatives of ω-alkenoatesPart XLVI: P. M. Gomez, L. P. Hu, and O. Vogl, Polym. Bull., 15(2), 135 (1986). (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 26 (1988), S. 657-675 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A number of derivatives of ω-alkenoates were synthesized in preparation for the synthesis of functional polymers based on α-olefins. For the preparation of most of the methyl esters, the regular esterification of ω-alkenoic acids, specifically 10-undecenoic acid with methanol and sulfuric acid as the catalyst, was most effective. For the preparation of the tert-butyl- and 2-ethylhexyl esters of 10-undecenoic acid, the acid chloride route was found to be most convenient, whereas for the preparation of the corresponding esters of 5-hexenoic acid, our method of choice was the synthesis via the imidazolyl derivative of the acid. 2,2,2-Trifluoroethyl 10-undecenoate and the 2,2-dimethyloxazolidine derivative of 10-undecenoic acid were prepared from the acid and 2,2,2-trifluoroethanol or 2-amino-2-methyl-propanol with p-toluene sulfonic acid as the catalyst. Esters of phenol, 2,6-dimethylphenol, and 2,6-diphenylphenol were synthesized from 3-butenoic and 10-undecenoic acid with trifluoroacetic anhydride.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1988.080260301
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