Accession Number:

ADD010471

Title:

Unsymmetrical Polynitrocarbonates and Symmetrical 1,3-Bis (Halo-and Nitroalkyl Carbonyldioxy)-2,2-Dinitropropanes and Methods of Preparation.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1982-03-03

Pagination or Media Count:

23.0

Abstract:

This invention relates to organic carbonates and more particularly to nitro substituted organic carbonates. In order to prepare unsymmetrical carbonates, it is necessary to react a chloroformate of an alcohol with a second alcohol. The general method for preparing chloroformates is to react an alcohol with an excess of phosgene poisonous gas in the presence of a base as an acid acceptor. Inevitably a greater or lesser amount of the carbonate is formed, as a by-product, which lowers the yield and requires separation of the product. In addition, nitroalcohols in the presence of base, have a tendency to deformylate, which also lowers the yield of chloroformate. A third factor is that nitro substituted diols such as 2,2-dinitropropan-1, 3-diol form as major products linear carbonates and cyclic carbonates. Author

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE