Ammonia → 1,3,5,7,2,4,6,8-Tetrazatetraphosphocine, 2,2,4,4,6,6,8,8-octachloro-2,2,4,4,6,6,8,8-octahydro-

A two-stage cascaded continuous reaction is effected as set forth in Example I, with the exception that NH3 feed is divided equally between the two reactors, instead of the total NH3 being fed to the first reactor. Into each reactor is metered a five to ten percent excess over the one-half molar equivalent of NH3, based on the moles of PCl5 introduced. A sample of product obtained under conditions as described in Example I, was collected and filtered. The filtrate was stripped of solvent in vacuo to obtain the product polymeric phosphonitrilic chloride, which contained 87.1% hexane soluble cyclic oligomers. The hexane insoluble linear fraction was a yellow oil. The cyclic portion was analyzed by gas chromatography and the distribution of cyclic portion was as follows:

1. customreaction
2. customInto each reactor is metered
3. additionintroduced
4. customA sample of product obtained under conditions
5. customwas collected
6. filtrationfiltered

ORD record

ord-5b22d9af9a9246b296fb45eced7310aa

Source dataset

uspto-grants-1977_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04046857