Preparation of Poly(Dinitropropyl Vinyl Ether) with Crosslinking Sites,for Use as a Castable Binder.

摘要

Attempts were made to prepare dinitropropyl vinyl ether (DNPVE) prepolymers of a molecular weight range of 2,000 to 4,000 with hydroxy functionality for use in cast-curable energetic binder systems. Two approaches were pursued. First, part of the dinitropropyl side chains in Poly-DNPVE were reduced to monoitropropyl groups and then hydroxymethylated with aqueous formaldehyde. The desired hydroxy-functional polymer was formed in excellent yield. In a second approach, DNPVE monomer was polymerized using initiator systems capable of introducing functional groups. The system, epichlorohydrin/SnC14/DNPVE, gave an incompletely characterized product of the expected elemental composition. However, the structure of the product was not determined. (Author)