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专利名称：Preparation of difluoroamine
发明人：KELLY DONALD H.,SUKORNICK BERNARD申请号：US29688663申请日：19630718公开号：US3341306A公开日：19670912
摘要：Difluoramine, NHF2, is prepared by introducing gaseous F2 into an aqueoussolution of sulphamic acid NH2SO3H, in amounts of 1-2.5 mols F2 per mol sulphamic acid.The F2 is either introduced at 0-10 DEG C. and the mixture then heated at 10-85 DEG C. toevolve NHF2; or it is introduced at 10-30 DEG C., when the NHF2 is simultaneouslyevolved, with optional subsequent heating to 85 DEG C. When two stages are employed,the intermediate is said to be N,N-difluorosulphamic acid NF2SO3H. The F2 may bediluted with at least 4, e.g. 5-15, volumes of inert gas, e.g. N2 or Hl. Saturated solutions ofsulphamic acid are preferred. The NHF2 is dried, condensed at - 80 DEG C., and thendistilled off. It reacts with BCl3 or COCl2 to give F2NCl.
申请人：ALLIED CHEMICAL CORPORATION
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