By Charles C. Price (auth.), Charles C. Price, Edwin J. Vandenberg (eds.)
Edwin J. Vandenberg, decades researcher on the examine middle of Hercules integrated, was once the 1981 winner of the yankee Chemical Society Award in Polymer Chemistry, subsidized by way of the Witco Chemical Corp. Following is the quotation of the accomplishments which ended in this award. "In reputation of his pioneering learn that complex polymer technological know-how and that ended in the invention and improvement of isotactic polypropylene, epichlorohydrin and propylene oxide elastomers, new polymerization catalysts, and the hydrogen approach to controlling molecular weights of Ziegler polyolefins." It used to be my excitement to rearrange a symposium to have a good time this award on the Atlanta assembly of the yankee Chemical Society on March 30, 1981. In contemplating the vast diversity of Vandenberg's contributions to polymer chemistry, it used to be made up our minds to decide on the topic of "Coordination Polymerization" for the symposium. This quarter is either one to which Vandenberg has made significant contributions and one in every of nice commercial and medical curiosity. given that Vandenberg has been all for coordination polymerization in either ring-opening and a-olefin style polymerizations, either have been lined within the symposium, whose software follows. 1. "The Polymerization of 1,2-Epoxides Catalyzed through the Condensation items of Metal-Containing Compounds with Alkylphosphates", T. Nakata, examine Laboratories, Osaka Soda Co., Ltd., nine Otakasu-cho, Amagasaki urban, Hyogo Pref. 660, Japan.
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Additional info for Coordination Polymerization
Vogl et al 2 have reported recently preparing a variety of polyethers with ester groups using our chelate catalyst. We have also introduced a variety of reactive groups, such as carboxyl, carboxylate, sulfoxide, amino, isothuronium, thioether, thiosulfate, azide, and phosphonate, into polyethers by the reaction of polyepichlorohydrin with various nucleophiles 73 • Ibe latter route is somewhat limited because of the ready base cleavage of polyepichlorohydrin 74 • Polyglycidol A hydroxyl side group as in glycidol, 3-hydroxy-l,2-epoxypropane, is especially interesting.
J. Vandenberg, "Isotactic Polypropylene" in E. L. , Macrom01ecu1ar Syntheses, 5, 95 (1974). L. W. Gamb1e, A. W. , and A. H. S. Patent 2,951,045 (August 30, 1960); D. E. Winkler and K. S. Patent 2,971,925, (February 14, 1961); E. V. Fasce and R. J. 5. Patent 2,999,086 (September 5, 1961); D. Kaufman and B. H. S. Patent 3,109,822, filed May 28, 1957, issued November 5, 1963. O. Ruff and F. Neuman, Z. Anorg. Chem. 128, 81 (1923). E. Tornqvist, C. W. See1bach and A. W. L;;ger, Jr. S. Patent 3,128,252, fi1ed April 16, 1956, issued April 7, 1964.
This turned out to be another new polymer. In a course of exploring this lead, we found that we could not repeat our previous work with a new batch of monomer. Indeed in our first work, we had used a nearly empty bottle of epichlorohydrin that had been around the laboratory for some time. We immediately suspected that there was probably water in the epichlorohydrin. Thus, we reacted triisobutyl aluminum with water and found it to be very effective catalytically. , the epoxide coordinated with the metal prior to its insertion in the chain.
Coordination Polymerization by Charles C. Price (auth.), Charles C. Price, Edwin J. Vandenberg (eds.)