Fluorinated peroxy polyether copolymers and method for preparing them from tetrafluoroethylene

Abstract

Abstract WHEREIN C2F4 REPRESENTS A PERFLUOROALKYLENE UNIT DERIVED FROM THE OPENING OF A DOUBLE BOND OF A MOLECULE OF TETRADOM DISTRIBUTION ALONG THE POLYETHER CHAIN; -(O)- REPRESENTS AN OXYGEN ATOM HAVING A RANDOM DISTRIBUTION ALONG THE POLYMER CHAIN AND LINKED IN THE PEROXIDIC FORM TO THE DIFFERENT OXYPERFLUOROALKYLENE UNITS; A AND B MAY BE THE SAME OR DIFFERENT AND EACH IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF CF3-, -COF, AND -CF2-COF; P AND Q ARE EACH FROM 1 TO 199, R IS FROM 0 TO 199, THE SUM OF P+Q IS BETWEEN 2 AND 200, THE RATIO Q/P IS BEFLUOROETHYLENE; THE TWO PERFLUOROETHYLENE UNITS HAVE A RANTWEEN 0.1 AND 10, THE RATIO R/P IS BETWEEN 0 AND 1, AND THE RATIO R/(P + Q + 1) IS BETWEEN 0 AND 0.8. ALSO INCLUDES DERIVATIVES OF SUCH POLYETHERS, AS BY HYDROLYSIS, ESTERIFICATION, SALT FORMATION, AMIDATION, DEHYDRATION OF THE AMIDE TO A NITRILE, AND DECARBOXYLATION. METHOD OF PREPARING POLYETHERS BY PHOTOCHEMICAL REACTION OF MOLEULAR OXYGEN WITH A SOLUTION OF PERFLUOROETHYLENE. THESE PEROXY-POLYETHERS CAN BE USED AS HYDRAULIC FLUIDS, HEAT EXCHANGE LIQUIDS, LUBRICANT AND AS PLASTICIZERS. A-O-(C2F4-O-)P-(CF2-O-)Q-(O)R-B FLUORINATED LINEAR POLYETHERS OF THE GENERAL FORMULA

Inventors

• 👤 G Belardinelli
• 👤 D Sianesi
• 👤 A Pasetti

Bibliographic Details