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US 5,707,597 AGranted
Polyhalophosphazene solutions stable against gelation
AssigneeVirus Research Institute
InventorsAlexander K. Andrianov, Jonathan R. Sargent, Sameer S. Sule, Mark LeGolvan
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Abstract
A solution which comprises a polyphosphazene solute, such as a polyhalophosphazene solute, and a stabilizing solvent such as diglyme. Such solution enables the polyphosphazene to remain stable for extended periods of time so that such polyhalophosphazenes may be employed for further modification or use.
Claims13
A solution comprising (i) a solute, said solute being a polyphosphazene;
- and (ii) at least one solvent, wherein said at least one solvent includes a first solvent in an amount of at least 25% by volume of the total amount of solvent, said first solvent having the following structural formula:
- ##STR3## wherein each of R.sub.1 and R.sub.3 is an aliphatic or aromatic hydrocarbon having from 1 to 6 carbon atoms, and each of R.sub.1 and R.sub.3 is the same or different, R.sub.2 is an aliphatic hydrocarbon having from 1 to 4 carbon atoms, and n is from 2 to 10.
Dependencies are inferred from the claim text.