Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heterocyclic ring compound; a heterocyclic ring is one...
Reexamination Certificate
2008-07-15
2008-07-15
McAvoy, Ellen M. (Department: 1797)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Heterocyclic ring compound; a heterocyclic ring is one...
C508S182000, C508S267000, C546S261000, C546S290000
Reexamination Certificate
active
07399735
ABSTRACT:
Compounds formed of (per)fluoropolyether chains and end groups having a pyridine structure, with structural formula:in-line-formulae description="In-line Formulae" end="lead"?T1-CW1—O—Rf—CW2-T2 (I)in-line-formulae description="In-line Formulae" end="tail"?whereinT1, T2, equal to or different from each other, have the following meanings:F, CF3, C2F5, (C2F4)Cl;CH2—B—Y, CH(CF3)O—Y, wherein:B═O, S;wherein R1, R2, R3, R4, equal to or different from each other, are H, F, C1-C8linear or branched perfluoroalkyl, NO2, CN;with the proviso that at least one of the two end groups T1, T2is CH2—B—Y or CH(CF3)O—Y as above defined;W1, W2, equal to or different from each other, are —F, —CF3;Rf is a (per)fluoropolyoxyalkylene chain having a number average molecular weight from 400 to 10,000.
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Maccone Patrizia
Russo Antonio
Arent & Fox LLP
McAvoy Ellen M.
Solvay Solexis S.p.A.
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