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US 7,115,783 B2Granted
PFPEs having at least an alkylether end group and respective preparation process
AssigneeSolvay Solexis S.p.A.
InventorsGiuseppe Marchionni, Mario Visca
Life of this patent
Estimating the term…
Abstract
Perfluoropolyethers having structural formula R1O—(CF2O)n—(CF2CF2O)mR2 (I) wherein: R1 is —CH3 or —C2H5; R2 is equal to R1 or —CF2H n is integer from 1 to 100; m is an integer from 1 to 100 or, when R2 is —CF2H, in can also be 0; the oxyfluoro-alkylene units —(CF2CF2O)— and —(CF2O)— are statistically distributed along the polymer chain.
Claims3
Perfluoropolyethers having structural formula
- R1O—(CF2O)n—(CF2CF2O)mR2 (I) wherein:
- R1 is —CH3 or —C2H5;
- R2 is equal to R1 or —CF2H;
- n is an integer from 1 to 100;
- m is an integer from 1 to 100;
- the oxyfluoroalkylene units —(CF2CF2O)— and —(CF2O)— are statistically distributed along the polymer chain.
3 more elements
Dependencies are inferred from the claim text.