HIGH ENERGY PLASTICIZERS
Abstract
The energetic plasticizer Shell P722, 2,3-bis(difluoramino)propyl 2, 2-dinitropropyl carbonate, shows excellent stability during prolonged heating. As determined by gas evolution, weight loss, and infrared analysis no significant change occurs after heating for 31 days at 90 C. An improved synthesis of the energetic plasticizer Shell P731, 4,4,4-trinitrobut-1-yl cyanoacetate, is based on the sodium borohydride reduction of trinitrobutyraldehyde to trinitrobutanol (TNBOH) in a water-benzene system followed by direct treatment of the benzene solution with cyanoacetic acid. Improvements in the synthesis of the energetic plasticizer Shell P831, 2- cyanoethyl 4,4,4-trinitrobut-1-yl carbonate, comprise the preparation of the intermediate trinitrobutyl chloroformate from crude TNBOH, and direct use of the chloroformate without purification. The new plasticizer candidate 2,3- bis(difluoramino)propyl 4,4,4-trinitrobut-1-yl carbonate was made in fair yield but could not be purified well. The compound bis(4,4,4-trinitrobut-1-yl) carbonate is a solid melting at 96 C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1968
- Accession Number
- AD0391744
Entities
People
- A. L. Rocklin