This is a division of application Ser. No. 401,220 filed Aug. 31, 1989.
Number | Name | Date | Kind |
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4528364 | Prier | Jul 1985 | |
4658065 | Aoshima et al. | Apr 1987 | |
4665236 | Edwards | May 1987 |
Number | Date | Country |
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250168 | Dec 1987 | EPX |
Entry |
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Y. Zhang, "Ring Opening Polymerization of Ethylene Oxide by the Y(P.sub.204).sub.3 --Al(i-Bu).sub.3 -H.sub.2 O Catalyst", Inorganica Chemica Acta, 155 (1989) 263-265. |
Medvedeva, et al, "Saturated Polyesters", The American Chemical Society, vol. 86, p. 5988, 1977 (Abstract) Chem. Abs. |
E. J. Rosenbaum, "Isomorphism of Borates and Carbonates", Chemical Abstracts, vol. 26, p. 4990, (Abstract). |
N. N. Greenwood, "Borates", Comprehensive Inorganic Chemistry, pp. 888-889. |
Number | Date | Country | |
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Parent | 401220 | Aug 1989 |