Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Compound of indeterminate structure – prepared by reacting an...
Reexamination Certificate
2007-01-02
2007-01-02
Zucker, Paul A. (Department: 1621)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Compound of indeterminate structure, prepared by reacting an...
C560S182000
Reexamination Certificate
active
10518717
ABSTRACT:
A novel perfluoropolyether derivative, which has at least one ester bond and is useful as a lubricant with a decomposition temperature of 300° C. or more, is obtained by an esterification reaction between a perfluoropolyether diol having hydroxyl groups at both ends thereof and represented by the formula (1) and a perfluoropolyether dicarboxylic acid having carboxyl groups at both ends thereof and represented by the formula (2):in-line-formulae description="In-line Formulae" end="lead"?HOCH2—R—CH2OH (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?HOOC—R′—COOH (2)in-line-formulae description="In-line Formulae" end="tail"?wherein each of R and R′ is a perfluoroether group.
REFERENCES:
patent: 5004554 (1991-04-01), Tohzuka et al.
patent: 5431833 (1995-07-01), Kondo et al.
patent: 0 338 529 (1989-10-01), None
patent: A-01-268664 (1989-10-01), None
patent: A-02-049218 (1990-02-01), None
patent: A-05-194970 (1993-08-01), None
Oliff & Berridg,e PLC
Sony Chemical & Information Device Corporation
Sony Corporation
Zucker Paul A.
LandOfFree
Perfluoropolyether ester compound, lubricant and magnetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Perfluoropolyether ester compound, lubricant and magnetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perfluoropolyether ester compound, lubricant and magnetic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3812242