发明授权
US5000830A Process for the production of perfluoropolyethers substantially constituted by perfluorooxyethylene and perfluorooxypropylene units 失效
用于生产基本上由全氟氧乙烯和全氟氧化丙烯单元组成的全氟聚醚的方法

Process for the production of perfluoropolyethers substantially
constituted by perfluorooxyethylene and perfluorooxypropylene units
摘要:
Improved process for producing perfluoropolyethers prevailingly constituted by repeating units--CF.sub.2 CF.sub.2 O--and ##STR1## with perfluoroalkyl terminal groups, wiith a mutual ratio of the above C.sub.3 /C.sub.2 units comprised within the range of from 0.2 to 6, endowed with an optimum combination of chemical-physical properties, prepared by means of a process of photo-oxidation of C.sub.3 F.sub.6 +C.sub.2 F.sub.4, under controlled conditions.
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