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By Charles C. Price (auth.), Charles C. Price, Edwin J. Vandenberg (eds.)

Edwin J. Vandenberg, many years researcher on the examine middle of Hercules integrated, used to be the 1981 winner of the yankee Chemical Society Award in Polymer Chemistry, subsidized by means of the Witco Chemical Corp. Following is the quotation of the accomplishments which ended in this award. "In acceptance of his pioneering study that complicated polymer technology 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 was once my excitement to rearrange a symposium to have a good time this award on the Atlanta assembly of the yank Chemical Society on March 30, 1981. In contemplating the vast variety 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 sector is either one to which Vandenberg has made significant contributions and certainly one of nice business and clinical curiosity. on account that Vandenberg has been concerned with coordination polymerization in either ring-opening and a-olefin sort polymerizations, either have been lined within the symposium, whose software follows. 1. "The Polymerization of 1,2-Epoxides Catalyzed by way of the Condensation items of Metal-Containing Compounds with Alkylphosphates", T. Nakata, study Laboratories, Osaka Soda Co., Ltd., nine Otakasu-cho, Amagasaki urban, Hyogo Pref. 660, Japan.

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Kridler for the x-ray studies on polyglycidol, and to Dr. W. Freeman and Dr. R. Crecely

J. S. Patent 3,422,082, fi1ed April 19, 1956 and July 30, 1956, issued January 14, 1969. E. J. S. Patent 3,316,229, fi1ed August 12, 1966, issued April 25, 1967. D. S. Bres1ow, D. L. Christman, H. H. Espy and C. A. Lukaeh, J. App1. Po1ym. Sei. 11, 73 (1967). D. S. Breslow and A. ~tner, J. Po1ym. , 9B, 129 (1971). E. J. Vandenberg (to Hereules Ineorporated), ü7s. Patent 3,284,426, fi1ed Mareh 18, 1957, issued November 8, 1966. D. L. Christman and E. J. S. Patent 3,025,282, filed September 14, 1959, issued "Mareh 13, 1962.

After cooling, dried hexane was introduced into the flask. Ethylene oxide was bubbled into the hexane with stirring at 20 oC. After polymerization an antioxidant was added to the polymerization vessel. The obtained polymers were treated similarly to the other polymers except washing treatments were omitted. POlymerization of Gaseous Ethylene Oxide. The polymerization of gaseous ethylene oxide was carried out in a 200ml.

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