Patent ID: 11898082
Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for producing a phosphate-bridged cyanate ester comprising:
reacting a phenol with a chlorophosphate in the presence of base to make a phosphate ester;
hydrolyzing ether substituents on the resulting phosphate ester to generate a phosphate-polyphenol; and,
converting the phosphate-polyphenol to a phosphate-bridged cyanate ester, wherein the phosphate-bridged cyanate ester is characterized by the, formula:, where R1 is alkyl group, aromatic group,, and,
where R2 and R3 are each, where R1, R2, and R3 can each have up to four additional substituents independently selected from an alkyl or an aromatic group.