Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From boron reactant having at least one boron to hydrogen or...
Patent
1994-06-29
1995-12-19
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From boron reactant having at least one boron to hydrogen or...
528391, 528422, 528398, C08G 7908
Patent
active
054769159
ABSTRACT:
Living polymer synthesis methods for the synthesis of oligomeric and high molecular weight polymers with low polydispersity are disclosed. The disclosed methods are based on the discovery that the reaction of a ylid with an organoborane at a high ylid:borane ratio and high temperature provides for the synthesis of high molecular weight polymers with low polydispersity.
REFERENCES:
patent: 3103537 (1963-09-01), Rutkowski
Tufariello et al., "The Reaction of Organoboranes with Dimethylsulphonium Methylide." Chem. Com., 1967, pp. 505-506.
Imoto et al., "Polymerization of Carbenoids, Carbenes, and Nitrenes," J. Macromol. Sci.-Revs. Macromol. Chem. (1972), pp. 1-48.
T. Onak, "Organoborane Chemistry," Academic Press, New York, 1975.
Mucha et al., "Crystallization During Polymerization of Diazomethane. I. The Boron Trifluoride Catalyzed Reaction," J. Polymer Sci., vol. 12, 1993-2018 (1974).
Mukaiyama et al., "The Reaction of Trialkylboron and A-Lithobenzyl-2-Pyridyl or Phenylsulfide. A Convenient Method for the Preparation of Alkylbenzenes," Short Comm., vol. 45, p. 2244 (1972).
Tufariello et al., "The Reaction of Trialkylboranes with Dimethyloxosulfonium Methylide," J. Am. Chem. Soc. 88:20, Oct. 20, 1966, pp. 4757-4759.
J. R. Walker, Masters Thesis: "1. Transition Metal Mediated Ring Opening Metathesis Polymerization: Investigations and Application to the Polymerization of Bicyclo[4.3.1]Decene. 2. Synthesis of Macromolecules via the Pepetitive Homologation of Trialkylboranes", Jun. 1993.
Shea Kenneth J.
Walker James R.
Zhu Hiude
Bleutge John C.
Sweet Mark D.
The Regents of the University of California
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