Method for Synthesis of Linear Inorganic-Organic Hybrid Polymers
Patent, Filed 27 Nov 96, patented 26 May 98
DEPARTMENT OF THE NAVY WASHINGTON DC
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A method of preparing a linear inorganic-organic hybrid polymer includes the steps of cooling a reaction medium to a first starting temperature below the ambient temperature and not less than about -10 deg C., adding n-butyllithium and an organic compound capable of reacting with n-butyllithium to form an organo-dilithium compound to the reaction medium, allowing the organic compound and the n-butyllithium to react to form an organo-dilithium compound while allowing the reaction medium to warm, cooling the reaction medium to a second starting temperature below the ambient temperature and not less than about -10 deg C., adding an inorganic compound containing at least two halogen atoms and capable of reacting with said organo-dilithium compound to form a linear inorganic-organic hybrid polymer to the reaction medium, and allowing the inorganic compound to react with the organo-dilithium compound to form a linear inorganic-organic hybrid polymer while allowing the reaction medium to warm to the ambient temperature. The cooling to the first and second starting temperatures may be accomplished by any method known in the art for cooling a reaction medium, for example by cooling with an ice water or saltice water bath or by cooling with an automated cooling or refrigerating system.
- Polymer Chemistry