PFPEs having at least an alkylether end group and respective...

Details PFPEs having at least an alkylether end group and respective... PFPEs having at least an alkylether end group and respective...

2006-01-03

2006-01-03

Keys, Rosalynd (Department: 1621)

Chemistry: analytical and immunological testing

Oxygen containing

Ozone or peroxide

C436S128000, C568S560000, C568S561000, C568S563000, C568S567000

Reexamination Certificate

active

06982173

ABSTRACT:
Perfluoropolyethers having structural formulain-line-formulae description="In-line Formulae" end="lead"?R1O—(CF2O)n—(CF2CF2O)mR2  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein:R1is —CH3or —C2H5; R2is equal to R1or —CF2Hn is 0 or an integer from 1 to 100; m is an integer from 1 to 100 or, when R2is —CF2H, m can also be 0; the oxyfluoro-alkylene units —(CF2CF2O)— and —(CF2O)— are statistically distributed along the polymer chain.

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